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Quectel EC21 Mini PCIe Series Hardware Design

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EC21 Mini PCIe
Hardware Design
LTE Standard Module Series
Rev. EC21_Mini_PCIe_Hardware_Design_V1.4
Date: 2019-11-26
Status: Released
www.quectel.com

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Summary of Contents for Quectel EC21 Mini PCIe Series

  • Page 1 EC21 Mini PCIe Hardware Design LTE Standard Module Series Rev. EC21_Mini_PCIe_Hardware_Design_V1.4 Date: 2019-11-26 Status: Released www.quectel.com...
  • Page 2 QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION.

  • Page 3: About The Document

    LTE Standard Module Series EC21 Mini PCIe Hardware Design About the Document Revision History Revision Date Author Description Yeoman CHEN/ 2016-06-07 Initial Frank WANG 1. Deleted description of EC21-AUTL and EC21-CT Mini PCIe in Table 1. 2. Updated key features of EC21 Mini PCIe in Table 2. 3.
  • Page 4 LTE Standard Module Series EC21 Mini PCIe Hardware Design 8. Added thermal consideration in Chapter 6.7. 9. Updated UMTS and GSM features and added storage temperature range in Table 2. 10. Added operating frequencies in Table 15 11. Added GNSS frequency in Table 16. 12.
  • Page 5 LTE Standard Module Series EC21 Mini PCIe Hardware Design version. 1. Removed related information of ThreadX OS because the baseline has been updated. 2. Updated the supported protocols and USB serial drivers in Table 2. 3. Added operating modes of module in Chapter 3.3. 4.

  • Page 6: Table Of Contents

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Contents About the Document ........................... 2 Contents ............................... 5 Table Index ..............................7 Figure Index ..............................9 Introduction ............................10 1.1. Safety Information........................11 Product Concept ..........................12 2.1. General Description ......................... 12 2.2.
  • Page 7 LTE Standard Module Series EC21 Mini PCIe Hardware Design Electrical, Reliability and Radio Characteristics ................42 6.1. General Description ......................... 42 6.2. Power Supply Requirements ....................42 6.3. I/O Requirements ........................43 6.4. RF Characteristics ........................43 6.5. ESD Characteristics ........................ 49 6.6.
  • Page 8 TABLE 38: CURRENT CONSUMPTION OF EC21-EU MINI PCIE ..............54 TABLE 39: CURRENT CONSUMPTION OF EC21-AU MINI PCIE ..............56 TABLE 40: CURRENT CONSUMPTION OF EC21-J MINI PCIE ..............59 TABLE 41: GNSS CURRENT CONSUMPTION OF EC21 MINI PCIE SERIES MODULE ....... 60 EC21_Mini_PCIe_Hardware_Design 7 / 67...
  • Page 9 LTE Standard Module Series EC21 Mini PCIe Hardware Design TABLE 42: RELATED DOCUMENTS ........................ 65 TABLE 43: TERMS AND ABBREVIATIONS ...................... 65 EC21_Mini_PCIe_Hardware_Design 8 / 67...
  • Page 10 LTE Standard Module Series EC21 Mini PCIe Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM ....................... 17 FIGURE 2: PIN ASSIGNMENT ......................... 18 FIGURE 3: REFERENCE CIRCUIT OF POWER SUPPLY ................24 FIGURE 4: REFERENCE CIRCUIT OF (U)SIM INTERFACE WITH AN 8-PIN (U)SIM CARD CONNECTOR 25 FIGURE 5: REFERENCE CIRCUIT OF (U)SIM INTERFACE WITH A 6-PIN (U)SIM CARD CONNECTOR ...

  • Page 11: Introduction

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Introduction This document defines EC21 Mini PCIe module, and describes its air interfaces and hardware interfaces which are connected with customers’ applications. This document helps customers quickly understand module interface specifications, electrical characteristics, mechanical specifications and other related information of the module.

  • Page 12: Safety Information

    EC21 Mini PCIe module. Manufacturers of the cellular terminal should send the following safety information to users and operating personnel, and incorporate these guidelines into all manuals supplied with the product. If not so, Quectel assumes no liability for customers’ failure to comply with these precautions.

  • Page 13: Product Concept

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Product Concept 2.1. General Description EC21 Mini PCIe module provides data connectivity on LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA, EDGE and GPRS networks with PCI Express Mini Card 1.2 standard interface. It supports embedded operating systems such as Linux, Android etc., and also provides audio, high-speed data transmission and GNSS functionalities for customers’...

  • Page 14: Description Of Module Series

    LTE Standard Module Series EC21 Mini PCIe Hardware Design 2.2. Description of Module Series EC21 Mini PCIe series contains 10 variants, and are listed in the following table. Table 1: Description of EC21 Mini PCIe Module Series Description Support GSM: 900/1800MHz...

  • Page 15: Key Features

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Support GSM: 900/1800MHz Support WCDMA: B1/B8 Support LTE-FDD: B1/B3/B7/B8/B20/B28A EC21-EU Mini PCIe Support LTE/WCDMA receive diversity Support GNSS Support digital audio Support LTE-FDD: B1/B3/B7/B8/B20/B28A Support WCDMA: B1/B8 EC21-EC Mini PCIe Support GSM: 900/1800MHz Support LTE/WCDMA receive diversity Support digital audio Support GSM: 850/900/1800/1900MHz...
  • Page 16 LTE Standard Module Series EC21 Mini PCIe Hardware Design Class E2 (27dBm± 3dB) for GSM850 8-PSK Class E2 (27dBm± 3dB) for EGSM900 8-PSK Class E2 (26dBm± 3dB) for DCS1800 8-PSK Class E2 (26dBm± 3dB) for PCS1900 8-PSK Class 3 (24dBm+1/-3dB) for WCDMA bands Class 3 (23dBm±...
  • Page 17 Support LTE/WCDMA Rx-diversity Gen8C Lite of Qualcomm GNSS Features Protocol: NMEA 0183 Data update rate: 1Hz by default Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT AT Commands commands Size: (51.0± 0.15)mm × (30.0± 0.15)mm × (4.9± 0.2)mm Physical Characteristics Weight: approx.

  • Page 18: Functional Diagram

    LTE Standard Module Series EC21 Mini PCIe Hardware Design 2.4. Functional Diagram The following figure shows the block diagram of EC21 Mini PCIe. Boost VBAT Circuit Main Main Antenna Antenna Connector PCM&I2C GNSS GNSS EC21 Antenna Antenna UART Module Connector (U)SIM Diversity Diversity...

  • Page 19: Application Interfaces

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Application Interfaces The physical connections and signal levels of EC21 Mini PCIe comply with PCI Express Mini Card Electromechanical Specification. This chapter mainly describes the definition and application of the following interfaces/pins of EC21 Mini PCIe. ...

  • Page 20: Pin Description

    LTE Standard Module Series EC21 Mini PCIe Hardware Design 3.2. Pin Description The following tables show the pin definition and description of the 52 pins on EC21 Mini PCIe. Table 3: I/O Parameters Definition Type Description Digital Input Digital Output Bidirectional Open Collector Power Input...
  • Page 21 LTE Standard Module Series EC21 Mini PCIe Hardware Design 1.5V Not connected CLKREQ# RESERVED Reserved Power supply for the UIM_PWR USIM_VDD (U)SIM card Mini card ground UIM_DATA USIM_DATA Data signal of (U)SIM card Connect to REFCLK- UART_RX UART receive data DTE’s TX UIM_CLK USIM_CLK...
  • Page 22 LTE Standard Module Series EC21 Mini PCIe Hardware Design Mini card ground Require external SMB_CLK I2C_SCL I2C serial clock pull-up to 1.8V. PETn0 Sleep mode control Require external SMB_DATA I2C_SDA I2C serial data pull-up to 1.8V. PETp0 RESERVED Reserved Mini card ground Mini card ground Require differential...

  • Page 23: Operating Modes

    LTE Standard Module Series EC21 Mini PCIe Hardware Design RESERVED PCM_DOUT PCM data output 1.5V Not connected RESERVED PCM_DIN PCM data input Mini card ground RESERVED PCM_SYNC PCM frame synchronization 3.0V~3.6V, typically 3.3V 3.3Vaux VCC_3V3 DC supply NOTES The digital audio (PCM) function is only supported on Telematics version. Keep all NC, reserved and unused pins unconnected.

  • Page 24: Power Saving

    LTE Standard Module Series EC21 Mini PCIe Hardware Design 3.2. Power Saving 3.2.1. Sleep Mode EC21 Mini PCIe is able to reduce its current consumption to a minimum value in sleep mode. There are three preconditions must be met to make the module enter sleep mode. ...

  • Page 25: U)Sim Interface

    LTE Standard Module Series EC21 Mini PCIe Hardware Design MIC29302WU VCC_3V3 LDO_IN 82K 1% 470uF 100nF 100nF 33pF 10pF 470R 470uF 47K 1% 4.7K MCU_POWER _ON/OFF Figure 3: Reference Circuit of Power Supply 3.4. (U)SIM Interface The (U)SIM interface circuitry meets ETSI and IMT-2000 requirements. Both 1.8V and 3.0V (U)SIM cards are supported.
  • Page 26 LTE Standard Module Series EC21 Mini PCIe Hardware Design USIM_VDD 100nF Module (U)SIM Card Connector USIM_VDD USIM_RST USIM_CLK USIM_PRESENCE USIM_DATA 33pF 33pF 33pF Figure 4: Reference Circuit of (U)SIM Interface with an 8-pin (U)SIM Card Connector If (U)SIM card detection function is not needed, please keep USIM_PRESENCE unconnected. A reference circuit for (U)SIM interface with a 6-pin (U)SIM card connector is illustrated in the following figure.

  • Page 27: Usb Interface

    LTE Standard Module Series EC21 Mini PCIe Hardware Design  Keep placement of (U)SIM card connector to the module as close as possible. Keep the trace length as less than 200mm as possible.  Keep (U)SIM card signals away from RF and power supply traces. ...
  • Page 28 LTE Standard Module Series EC21 Mini PCIe Hardware Design Test Points Minimize these stubs Module NM_0R NM_0R USB_DM USB_DM USB_DP USB_DP ESD Array Close to Module Figure 6: Reference Circuit of USB Interface A common mode choke L1 is recommended to be added in series between the module and customer’s MCU in order to suppress EMI spurious transmission.

  • Page 29: Uart Interface

    LTE Standard Module Series EC21 Mini PCIe Hardware Design 3.6. UART Interface EC21 Mini PCIe provides one main UART interface. The main UART interface supports 9600bps, 19200bps, 38400bps, 57600bps, 115200bps and 230400bps baud rates, and the default is 115200bps. This interface supports RTS and CTS hardware flow control, and be used for AT command communication and data transmission.

  • Page 30: Pcm And I2C Interfaces

    LTE Standard Module Series EC21 Mini PCIe Hardware Design  NOTE AT+IPR command can be used to set the baud rate of the main UART, and AT+IFC command can be used to set the hardware flow control (hardware flow control is disabled by default). Please refer to document [2] for details.
  • Page 31 LTE Standard Module Series EC21 Mini PCIe Hardware Design 125us PCM_CLK PCM_SYNC PCM_DOUT PCM_DIN Figure 8: Timing in Primary Mode In auxiliary mode, the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising edge. The PCM_SYNC rising edge represents the MSB. In this mode, the PCM interface operates with a 256kHz, 512kHz, 1024kHz or 2048kHz PCM_CLK and an 8kHz, 50% duty cycle PCM_SYNC.

  • Page 32: Control And Indication Signals

    LTE Standard Module Series EC21 Mini PCIe Hardware Design The following figure shows a reference design of PCM interface with an external codec IC. MIC_BIAS PCM_CLK BCLK PCM_SYNC MIC+ PCM_DOUT MIC- DACIN PCM_DIN ADCOUT SPKOUT+ SCLK I2C_SCL I2C_SDA SDIN SPKOUT- Codec Module 1.8V...

  • Page 33: Ri Signal

    LTE Standard Module Series EC21 Mini PCIe Hardware Design WAKE# Output signal to wake up the host 3.8.1. RI Signal The RI signal can be used to wake up the host. When a URC returns, there will be the following behaviors on the RI pin after executing AT+QCFG="risignaltype","physical".

  • Page 34: Perst# Signal

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 13: Airplane Mode Controlled by Software Method AT+CFUN=? RF Function Status Module Operation Mode RF and (U)SIM disabled Minimum functionality mode RF enabled Normal mode RF disabled Airplane mode 3.8.4. PERST# Signal The PERST# signal can be used to force a hardware reset on the card.

  • Page 35: Wake# Signal

    LTE Standard Module Series EC21 Mini PCIe Hardware Design LED_WWAN# Figure 13: LED_WWAN# Signal Reference Circuit Diagram There are two indication modes for LED_WWAN# signal to indicate network status, which can be switched through following AT commands:  AT+QCFG="ledmode",0 (Default setting) ...
  • Page 36 LTE Standard Module Series EC21 Mini PCIe Hardware Design 120ms High (external pull-up) URC returns Figure 14: WAKE# Behaviors EC21_Mini_PCIe_Hardware_Design 35 / 67...

  • Page 37: Gnss Receiver

    LTE Standard Module Series EC21 Mini PCIe Hardware Design GNSS Receiver 4.1. General Description EC21 Mini PCIe includes a fully integrated global navigation satellite system solution that supports Gen8C-Lite of Qualcomm (GPS, GLONASS, BeiDou/Compass, Galileo and QZSS). Additionally, it supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data update rate via USB interface by default.

  • Page 38: Gnss Frequency

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Accuracy Autonomous CEP-50 <2.5 (GNSS) @open sky NOTES Tracking sensitivity: the minimum GNSS signal power at which the module can maintain lock (keep positioning for at least 3 minutes continuously). Reacquisition sensitivity: the minimum GNSS signal power required for the module to maintain lock within 3 minutes after loss of lock.

  • Page 39: Antenna Connection

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Antenna Connection 5.1. Antenna Connectors EC21 Mini PCIe is mounted with three antenna connectors for external antenna connection: a main antenna connector, an Rx-diversity antenna connector, and a GNSS antenna connector. And Rx-diversity function is enabled by default.

  • Page 40: Antenna Requirements

    LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD B3 1710~1785 1805~1880 LTE-FDD B4 1710~1755 2110~2155 LTE-FDD B5 824~849 869~894 LTE-FDD B7 2500~2570 2620~2690 LTE-FDD B8 880~915 925~960 LTE-FDD B12 699~716 729~746 LTE-FDD B13 777~787 746~756 LTE-FDD B18 815~830 860~875 LTE-FDD B19 830~845...

  • Page 41: Recommended Mating Plugs For Antenna Connection

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Input impedance: 50Ω Cable insertion loss: < 1dB (GSM850, EGSM900, WCDMA B5/B8, LTE-FDD B5/B8/B12/B13/B18/B19/B20/B26/B28) Cable insertion loss: < 1.5dB (DCS1800, PCS1900, WCDMA B1/B2/B4, LTE-FDD B1/B2/B3/B4) Cable insertion loss < 2dB (LTE-FDD B7, LTE-TDD B40) NOTES It is recommended to use a passive GNSS antenna when LTE B13 or B14 is supported, as the use of active antenna may generate harmonics which will affect the GNSS performance.
  • Page 42 LTE Standard Module Series EC21 Mini PCIe Hardware Design U.FL-LP mating plugs listed in the following figure can be used to match the receptacles. Figure 16: Mechanicals of U.FL-LP Mating Plugs The following figure describes the space factor of mating plugs. Figure 17: Space Factor of Mating Plugs (Unit: mm) For more details of the recommended mating plugs, please visit http://www.hirose.com.

  • Page 43: Electrical, Reliability And Radio Characteristics

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Electrical, Reliability and Radio Characteristics 6.1. General Description This chapter mainly describes the following electrical and radio characteristics of EC21 Mini PCIe:  Power supply requirements  I/O requirements  RF characteristics ...

  • Page 44: I/O Requirements

    LTE Standard Module Series EC21 Mini PCIe Hardware Design 6.3. I/O Requirements The following table shows the I/O requirements of EC21 Mini PCIe. Table 21: I/O Requirements Parameter Description Min. Max. Unit Input High Voltage 0.7 × VCC_3V3 VCC_3V3 + 0.3 Input Low Voltage -0.3 0.3 ×...
  • Page 45 LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD bands 23dBm± 2dB < -39dBm LTE-TDD bands 23dBm± 2dB < -39dBm Table 23: Conducted RF Receiving Sensitivity of EC21-E Mini PCIe Frequency Bands Primary Diversity SIMO 3GPP (SIMO) EGSM900 -109.0dBm -102.0dBm DCS1800 -109.0dBm...
  • Page 46 LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 25: Conducted RF Receiving Sensitivity of EC21-V Mini PCIe Frequency Bands Primary Diversity SIMO 3GPP (SIMO) LTE-FDD B4 (10MHz) -97.5dBm -99.0dBm -101.0dBm -96.3dBm LTE-FDD B13 (10MHz) -97.7dBm -97.0dBm -100.0dBm -93.3dBm Table 26: Conducted RF Receiving Sensitivity of EC21-AUT Mini PCIe Frequency Bands Primary...
  • Page 47 LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 28: Conducted RF Receiving Sensitivity of EC21-J Mini PCIe Frequency Bands Primary Diversity SIMO 3GPP (SIMO) LTE-FDD B1 (10MHz) -97.5dBm -98.7dBm -100.2dBm -96.3dBm LTE-FDD B3 (10MHz) -96.5dBm -97.1dBm -100.5dBm -93.3dBm LTE-FDD B8 (10MHz) -98.4dBm -99.0dBm...
  • Page 48 LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD B8 (10MHz) -99.2dBm -98.2dBm -102.2dBm -93.3dBm LTE-FDD B28 (10MHz) -98.6dBm -98.7dBm -102.0dBm -94.8dBm LTE-TDD B40 (10MHz) -97.2dBm -98.4dBm -101.2dBm -96.3dBm Table 30: Conducted RF Receiving Sensitivity of EC21-EU Mini PCIe Frequency Bands Primary Diversity...
  • Page 49 LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD B7 (10MHz) -97.0dBm -95.5dBm -99.5dBm -94.3dBm LTE-FDD B8 (10MHz) -97.0dBm -97.0dBm -101.0dBm -93.3dBm LTE-FDD B20 (10MHz) -97.5dBm -99.0dBm -101.0dBm -93.3dBm LTE-FDD B28 (10MHz) -98.6dBm -98.7dBm -101.5dBm -94.8dBm Table 32: Conducted RF Receiving Sensitivity of EC21-AUX Mini PCIe Frequency Bands Primary Diversity...

  • Page 50: Esd Characteristics

    (U)SIM Interface +/-4 +/-8 Others +/-0.5 +/-1 6.6. Current Consumption The following tables describe the current consumption of EC21 Mini PCIe series module. Table 34: Current Consumption of EC21-A Mini PCIe Parameter Description Conditions Typ. Unit AT+CFUN=0 (USB disconnected) WCDMA PF=64 (USB disconnected)
  • Page 51 LTE Standard Module Series EC21 Mini PCIe Hardware Design WCDMA PF=64 (USB disconnected) 32.0 WCDMA PF=64 (USB connected) 45.0 Idle state LTE-FDD PF=64 (USB disconnected) 32.0 LTE-FDD PF=64 (USB connected) 45.0 WCDMA B2 HSDPA @21.59dBm 582.0 WCDMA B2 HSUPA @22.17dBm 675.0 WCDMA data WCDMA B4 HSDPA @21.47dBm...
  • Page 52 LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 36: Current Consumption of EC21-KL Mini PCIe Parameter Description Conditions Typ. Unit AT+CFUN=0 (USB disconnected) Sleep state LTE-FDD PF=64 (USB disconnected) LTE-FDD PF=128 (USB disconnected) LTE-FDD PF=64 (USB disconnected) 35.0 Idle state LTE-FDD PF=64 (USB connected) 49.0...
  • Page 53 LTE Standard Module Series EC21 Mini PCIe Hardware Design WCDMA PF=64 (USB disconnected) 23.1 WCDMA PF=64 (USB connected) 43.4 LTE-FDD PF=64 (USB disconnected) 30.7 LTE-FDD PF=64 (USB connected) 43.5 LTE-TDD PF=64 (USB disconnected) 31.2 LTE-TDD PF=64 (USB connected) 43.8 GSM850 4DL/1UL @32.50dBm 335.0 GSM850 3DL/2UL @31.69dBm 537.0...
  • Page 54 LTE Standard Module Series EC21 Mini PCIe Hardware Design GSM850 1DL/4UL PCL=8 @22.60dBm 623.0 EGSM900 4DL/1UL PCL=8 @27.42dBm 227.0 EGSM900 3DL/2UL PCL=8 @26.23dBm 371.0 EGSM900 2DL/3UL PCL=8 @24.10dBm 492.0 EGSM900 1DL/4UL PCL=8 @22.80dBm 626.0 DCS1800 4DL/1UL PCL=2 @26.50dBm 171.0 DCS1800 3DL/2UL PCL=2 @25.50dBm 280.0 DCS1800 2DL/3UL PCL=2 @23.60dBm 387.0...
  • Page 55 LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD B5@23.06dBm 697.0 LTE-FDD B7 @23.17dBm 886.0 LTE-FDD B8 @22.89dBm 852.0 LTE-FDD B28 @22.55dBm 939.0. LTE-TDD B40 @23.27dBm 421.0 GSM850 PCL=5 @32.40dBm 322.0 EGSM900 PCL=5 @33.58dBm 379.0 voice call DCS1800 PCL=0 @29.45dBm 182.0 PCS1900 PCL=0 @29.56dBm 195.0...
  • Page 56 LTE Standard Module Series EC21 Mini PCIe Hardware Design WCDMA PF=64 (USB disconnected) 25.3 WCDMA PF=64 (USB connected) 38.0 LTE-FDD PF=64 (USB disconnected) 26.0 LTE-FDD PF=64 (USB connected) 37.0 EGSM900 4DL/1UL @33.39dBm 389.3 EGSM900 3DL/2UL @32.47dBm 593.6 EGSM900 2DL/3UL @29.49dBm 611.6 GPRS data EGSM900 1DL/4UL @28.05dBm...
  • Page 57 LTE Standard Module Series EC21 Mini PCIe Hardware Design transfer LTE-FDD B3 @22.42dBm 938.3 (GNSS OFF) LTE-FDD B7 @22.21dBm 1036.0 LTE-FDD B8 @23.37dBm 897.5 LTE-FDD B20 @22.72dBm 913.0 LTE-FDD B28A @21.72dBm 898.8 EGSM900 PCL=5 @33.53dBm 385.0 voice call DCS1800 PCL=0 @31.20dBm 256.0 WCDMA B1 @23.45dBm 794.6...
  • Page 58 LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD PF=64 (USB disconnected) 25.4 LTE-FDD PF=64 (USB connected) 38.8 LTE-TDD PF=64 (USB disconnected) 25.8 LTE-TDD PF=64 (USB connected) 39.0 GSM850 4DL/1UL @32.62dBm 312.8 GSM850 3DL/2UL @32.52dBm 530.6 GSM850 2DL/3UL @30.53dBm 602.5 GSM850 1DL/4UL @29.27dBm 686.0...
  • Page 59 LTE Standard Module Series EC21 Mini PCIe Hardware Design EGSM900 3DL/2UL PCL=8 @26.91dBm 343.9 EGSM900 2DL/3UL PCL=8 @26.78dBm 449.6 EGSM900 1DL/4UL PCL=8 @26.67dBm 570.8 DCS1800 4DL/1UL PCL=2 @26.33dBm 199.2 DCS1800 3DL/2UL PCL=2 @26.65dBm 306.3 DCS1800 2DL/3UL PCL=2 @26.33dBm 419.8 DCS1800 1DL/4UL PCL=2 @26.35dBm 540.1 PCS1900 4DL/1UL PCL=2 @26.01dBm 186.5...
  • Page 60 LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD B8 @23.04dBm 807.4 LTE-FDD B28 @23.54dBm 932.0 LTE-TDD B40 @23.79dBm 585.2 GSM850 PCL=5 @32.80dBm 316.2 EGSM900 PCL=5 @33.16dBm 348.7 voice call DCS1800 PCL=0 @29.81dBm 216.8 PCS1900 PCL=0 @29.79dBm 214.9 WCDMA B1 @23.27dBm 823.4 WCDMA B2 @22.89dBm 898.7...

  • Page 61: Thermal Consideration

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 41: GNSS Current Consumption of EC21 Mini PCIe Series Module Parameter Description Conditions Typ. Unit Cold start @Passive Antenna 75.0 Searching (AT+CFUN=0) Lost state @Passive Antenna 74.0 VBAT Instrument environment 44.0...
  • Page 62 LTE Standard Module Series EC21 Mini PCIe Hardware Design Thermal Pad Thermal Pad EC21 Mini PCIe Heatsink Heatsink EC21 Module Shielding Cover PCI Express Mini Card Connector Application Board Application Board Figure 18: Referenced Heatsink Design NOTES The module offers the best performance when the internal BB chip stays below 105° C. When the maximum temperature of the BB chip reaches or exceeds 105°...

  • Page 63: Dimensions And Packaging

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Dimensions and Packaging 7.1. General Description This chapter mainly describes mechanical dimensions as well as packaging specification of EC21 Mini PCIe module. All dimensions are measured in millimeter (mm), and the dimensional tolerances are ±...

  • Page 64: Standard Dimensions Of Mini Pci Express

    LTE Standard Module Series EC21 Mini PCIe Hardware Design 7.3. Standard Dimensions of Mini PCI Express The following figure shows the standard dimensions of Mini PCI Express. Please refer to document [1] for Detail A and Detail B. Figure 20: Standard Dimensions of Mini PCI Express EC21_Mini_PCIe_Hardware_Design 63 / 67...

  • Page 65: Packaging Specifications

    LTE Standard Module Series EC21 Mini PCIe Hardware Design EC21 Mini PCIe adopts a standard Mini PCI Express connector which compiles with the directives and standards listed in the document [1]. The following figure takes the Molex 679105700 as an example. Figure 21: Dimensions of the Mini PCI Express Connector (Molex 679105700) 7.4.

  • Page 66: Appendix A References

    LTE Standard Module Series EC21 Mini PCIe Hardware Design Appendix A References Table 42: Related Documents Document Name Remark PCI Express Mini Card Electromechanical PCI Express Mini Card Specification Revision 1.2 Electromechanical Specification Quectel_LTE_Standard_AT_Commands_ AT commands manual for LTE Standard Manual modules GNSS application note for LTE Standard...
  • Page 67 LTE Standard Module Series EC21 Mini PCIe Hardware Design Equivalent Series Resistance Frequency Division Duplexing Full Rate GLObalnaya Navigatsionnaya Sputnikovaya Sistema, the Russian Global GLONASS Navigation Satellite System GMSK Gaussian Minimum Shift Keying GNSS Global Navigation Satellite System Global Positioning System Global System for Mobile Communications Half Rate HSPA...
  • Page 68 LTE Standard Module Series EC21 Mini PCIe Hardware Design Point of Sale Point-to-Point Protocol Radio Frequency Ready To Send Receive SIMO Single Input Multiple Output Short Message Service Transmitting Direction Transient Voltage Suppressor UART Universal Asynchronous Receiver & Transmitter Uplink Unsolicited Result Code Universal Serial Bus (U)SIM...

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