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CML Microcircuits
COMMUNICATION SEMICONDUCTORS
UM9910/6 September 2010
Features
•
CMX991 and CMX992 Evaluation
•
Receiver:
LNA
o
I/Q or IF Output
o
Selectable IF Filters
o
Test Access
o
•
450-470 MHz default operation
•
100MHz to 1GHz evaluation
1.
Brief Description
The EV9910B allows the evaluation of the CMX991 RF Quadrature Transceiver and the EV9920B allows
the evaluation of the CMX992 Quadrature / Low IF Receiver. Both Evaluation Kits use the same printed
circuit board, but with different components fitted. This User Manual is also common to both kits. The
CMX991 is an RF Transceiver IC providing I/Q modulator and up-conversion, superheterodyne receiver
and IF local oscillator. The CMX992 includes only the receiver and IF LO sections of the CMX991 and is
ideal for applications that do not require the CMX991 transmitter, for example when a linearised
transmitter is required, in which case the CMX998 Cartesian Loop Transmitter IC could be used for Tx
and the CMX992 for Rx.
© 2010 CML Microsystems Plc
EV9910B/EV9920B
Evaluation Kit
User Manual
•
Transmitter (CMX991 Only)
IF and RF Outputs
o
I/Q Input Interface
o
Gain Control
o
Optional o/p Filter and Buffer
o
•
PC control interface available
•
Interface to EV9810 or EV9100
Advance Information
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Table of Contents
Related Manuals for CML Microcircuits EV9910B
Summary of Contents for CML Microcircuits EV9910B
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Page 1: Brief Description
Interface to EV9810 or EV9100 Brief Description The EV9910B allows the evaluation of the CMX991 RF Quadrature Transceiver and the EV9920B allows the evaluation of the CMX992 Quadrature / Low IF Receiver. Both Evaluation Kits use the same printed circuit board, but with different components fitted. This User Manual is also common to both kits. The CMX991 is an RF Transceiver IC providing I/Q modulator and up-conversion, superheterodyne receiver and IF local oscillator. - Page 2 All signal paths are matched by suitable components. The EV9910B also provides an optional lumped bandpass filter plus buffer amplifier at 460MHz (default) to aid evaluation. The overall evaluation frequency range of this Evaluation Kit is for RF frequencies between 100MHz and 1GHz, with default operation over 450MHz to 470MHz.
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Page 3: Table Of Contents
Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B CONTENTS Section Page Brief Description ..................1 Preliminary Information................6 2.1. Laboratory Equipment ................ 6 2.2. Power Supply ..................6 2.3. Handling Precautions ................. 7 2.3.1. Static Protection ................7 2.3.2. Contents - Unpacking ..............7 2.4. - Page 4 Table 4 – Test Loops ........................18 Table 5 – Test Points ........................19 Table 6 – Jumper Links........................20 Table 7 – EV9910B/EV9920B and EV9100 interconnection details ..........36 Table 8 – Typical sensitivity performance..................36 Table 9 – Typical Adjacent Channel Rejection performance............36 Table 10 –...
- Page 5 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B 991Tx_OUT IQMOD_OUT CMX991 only Tx Buffer Differential Tx Filter TXOUT IQ Inputs Tx I/Q Conditioning Amps REFIN 19.2MHz VCTCXO TX_LO Integer- N PLL External Resonator & Control Varactors Registers C-BUS C-BUS Interface RXLO...
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Page 6: Preliminary Information
NOTE: Care should be exercised with the supplies, as they are not protected from reverse polarity. NOTE: When using the EV9910B/EV9920B kit with a PE0002 kit, power is not supplied to the PE0002 via the C-BUS connector (J18). The PE0002 must be connected directly to a separate +5V regulated power supply. -
Page 7: Handling Precautions
Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B 2.3. Handling Precautions Like most evaluation kits, this product is designed for use in office and laboratory environments. The following practices will help ensure its proper operation. 2.3.1. Static Protection This product uses circuits that can be damaged by electrostatic discharge. Partially damaged circuits can function erroneously, leading to misleading results. -
Page 8: Quick Start
460MHz. This is the default frequency of the kit’s hardware configuration. A more complete description of the kit and its use appears later in this document. The EV9910B includes a CMX991 and the EV9920B includes a CMX992 integrated circuit. - Page 9 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B +7.2V RF Signal Generator (Signal) Receiver RF Signal Output Generator (LO) CMX991 (CMX992) C-BUS EV9910B EV9920B Baseband IQ Generator RF Spectrum Analyser Figure 2 – Typical Evaluation Connections for EV9910B/EV9920B © 2010 CML Microsystems Plc UM9910/6...
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Page 10: Hardware/Software Installation (For Pe0002)
Extract the files to the hard drive of your host PC. • Connect the PE0002 Interface Card to the EV9910B/EV9920B via the right angle connector, either J5 or J3. C-BUS port 1 (connector J5) is recommended, for full software functionality. -
Page 11: Second - Configure
EV9910B/EV9920B Figure 4 – USB Driver Installation Message Box 3.2. Second – Configure In this second step the EV9910B/EV9920B is configured for either Rx (CMX991 and CMX992) or Tx (CMX991 only) operation. 3.2.1. Rx Configuration The following steps should be undertaken to configure the CMX991 or CMX992 to receive at 460MHz with an I/Q output. -
Page 12: Tx Configuration (Cmx991 Only)
• IF Amp/VGA, I/Q Mixers and B/B filters • B/B Differential Amps • LNA Control Signal Rx Mode For maximum Rx gain the Default EV9910B/EV9920B build register ($13) VGA attenuation should be uses MIXOUT1 from the 1 Mixer set at 0dB. Select the... - Page 13 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B Signal or Setting Connector Note Register TX_LO input 740MHz at –10dBm I and Q 10kHz sine wave on I J10, J11 These inputs must be connected to baseband inputs and 10kHz cosine wave 0VDC;...
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Page 14: Third - Operate
19.2MHz 3.3. Third – Operate Following the configuration procedures given in sections 3.1 and 3.2, the EV9910B/EV9920B should be operating as a receiver or a transmitter, as appropriate. Various evaluation tests can now be undertaken. For the receiver, the typical single ended output level is 400-450mVp-p on each of the I and Q channels (e.g. -
Page 15: Signal Lists
Transmitter I Channel Input Baseband Transmitter Q Channel Input (See also section 6.5.3 regarding I/Q connections) 991_TX_OUT Transmitter Image Reject Mixer Output not fitted TX OUT Tx Buffer Output (default state is not configured) EV9910B only © 2010 CML Microsystems Plc UM9910/6... - Page 16 (e.g. for connection to EV9810, seeTable 3) Baseband Receiver Q channel output from QAMPO Baseband Receiver I channel output from IAMPO Table 1 – Signal List Input Notes: Output Bidirectional Test Loop Test Point EV9910B only © 2010 CML Microsystems Plc UM9910/6...
- Page 17 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B CONNECTOR PINOUT for J18 Connector Signal Signal Description Pin No. Name Type RESET General RESET (RESET active low) C-BUS Enable Spare pin. Leave unconnected. CDATA C-BUS Data Input Spare pin. Leave unconnected. SCLK C-BUS Clock Spare pin.
- Page 18 TEST LOOPS Test Loop Default Description Ref. Measurement This TL is not present on EV9910B/EV9920B RXI (IAMPO) – default state is not fitted 1.9V Receiver Signal Level Indicator (SLI) – default state is not fitted RXQ (QAMPO) Analogue ground C-BUS RDATA...
- Page 19 J21 Pin 13 (AuxDAC2 on separate EV9810 board if connected to TP10 EV9910B/EV9920B) TP11 1.65V AFC (VCTCXO Control Voltage) TP12 C-BUS IRQN not used in EV9910B / EV9920B TP13 This TP is not present on EV9910B/EV9920B TP14 5.0V 5.0V regulator output for baseband circuits TP15 3.3V...
- Page 20 Setting Connected +3.3V digital power supply rail Connected +3.3V analogue power supply rail Connected +5.0V baseband power supply rail (EV9910B only) Connected +3.3V VCO/PLL power supply rail Connected +5.0V RF power supply rail Open Note: Jumpers can be used on J4 (see Table 1) to configure receiver outputs for I/Q output or connection to 455kHz filter.
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Page 21: Circuit Schematics And Board Layouts
Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B Circuit Schematics and Board Layouts For clarity, circuit schematics are available as separate high-resolution files. These can be obtained via the CML website. The layout on each side of the PCB is shown in Figure 5 and Figure 6, below. - Page 22 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B Figure 6 – PCB Layout: bottom © 2010 CML Microsystems Plc UM9910/6...
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Page 23: Detailed Description
As the EV9920B is a sub-set of the EV9910B, i.e. no transmit functionality, many components are not fitted. The evaluation platform also includes additional functionality (e.g. a position to fit a... - Page 24 470MHz. (Note: in all applications the user must determine the need for and design of any external image reject filtering, only limited filtering is provided on the EV9910B/EV9920B). A digital control signal (TP1) is provided by the CMX991 (CMX992), which is used to enable/disable the LNA.
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Page 25: Transmitter (Cmx991 Only)
100kHz bandwidth is selectable via C-BUS. If a 2 IF is to be used, the EV9910B/EV9920B provides a footprint for an external ceramic filter (F2) which may be at 450kHz, 455kHz, etc. Following the filter, one of the uncommitted differential amplifiers may be used to buffer the output signal. -
Page 26: Local Oscillator (Lo)
Figure 8 – Typical response of optional Tx filter + buffer. 6.1.3. Local Oscillator (LO) The main local oscillator has not been provided on the EV9910B/EV9920B. Separate connectors are provided to allow an external oscillator source to be injected for transmitter (CMX991 only) and receiver operation (CMX991 and CMX992). -
Page 27: Adjustments And Controls
Rx 1 Mixer Input Match Ref. Designator Values for 850MHz 4.7nH (0603) 6.8pF The following components need to be changed on the EV9910B for optimum Tx Output match at J12. Ref. Designator Values for 100MHz Values for 1GHz 2.7pF 8.2pF 3.3pF... -
Page 28: External If Lo
This PE0002 application software (ES9910xx.zip) is more specific than the normal ES0002xx.zip software. It allows the user to interact with the EV9910B/EV9920B via an easy to use GUI and consists of six tabs: three of the tabs are generic C-BUS control functions, with the other three representing a particular set of registers or a particular function of the CMX991 (CMX992). -
Page 29: The 'C-Bus Control' Tab
Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B The ‘C-BUS Control’ Tab This tab provides basic C-BUS read, write and general reset functions. Each character entered into the Address and Data edit boxes is checked to ensure that it is a valid hexadecimal value. - Page 30 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B button to write all the selected write type C-BUS registers. Click on the ‘Rd all’ button to read all the selected read type C-BUS registers. Click on the ‘Wr\Rd all’ button to read or write all the selected C-BUS registers.
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Page 31: The 'Cmx991\Cmx992 (1)' Tab
Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B 6.3.2. The ‘CMX991\CMX992 (1)’ Tab The CMX991\CMX992 (1) tab provides access (via J5 only) to the general control ($11) and PLL control ($20 - $23) registers, a general purpose read/write facility for any register address and access to all of the CMX991 (CMX992) read-back registers, see Figure 11. -
Page 32: The 'Cmx991\Cmx992 (2)' Tab
Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B 6.3.3. The ‘CMX991\CMX992 (2)’ Tab The ‘CMX991\CMX992 (2)’ tab provides access (via J5 only) to the Rx Control register ($12), Rx Mode register ($13), Tx Control register ($14, CMX991 only), Tx Mode ($15, CMX991 only) and Tx Gain Register ($16, CMX991 only) see Figure 12. -
Page 33: The Script Handler Tab
The script language is documented separately in the “Script Language Reference” document, which can be downloaded with the PE0002 support package from the CML website. Control of the EV9910B/EV9920B does not require the use of script files. Figure 13 – The ‘Script Handler’ Tab To select a script file, click on the ‘Select Script’... - Page 34 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B Figure 14 – Loading a Script File The results window displays the values returned by the script. These results can be saved to a text file or discarded by clicking on the ‘Save Results’ or ‘Clear Results’ buttons, respectively.
- Page 35 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B Figure 15 – The ‘Trace Dialog’ Box Click on the ‘>>’ or ‘<<’ buttons to upload and display the next or previous C-BUS transaction data block. Click on the ‘Read’ button to upload and display the C-BUS transaction data block starting at the address displayed in the Trace Start Address edit box.
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Page 36: Application Information
Rx Testing the CMX991 (CMX992) with the CMX910 The EV9910B/EV9920B has an I/Q interface which may be connected to an EV9100 through the use of a custom wired cable. The connections should be made as shown in Table 7. This allows evaluation of the CMX991 (CMX992) receiver with GMSK modulation. -
Page 37: Troubleshooting
ES9910xx.exe software fails to Faulty USB port or cable Check USB cable to your PC. run correctly and reports an error PE0002 or EV9910B/EV9920B is Power up PE0002 (5.0V) and during start up. not powered up during start up. EV9910B/EV9920B (7.2V). -
Page 38: Transmitter Operation (Cmx991 Only)
CMX991 data sheet version 13. Note: To avoid confusion Connection of the TXQN and connections details to external TXQP pins on EV9910B follows sources have not been changed the earlier (incorrect) datasheet in this document. connections so the spectrum at the output of the transmitter is inverted (i.e. -
Page 39: Performance Specification
Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B Performance Specification 7.1. Electrical Performance 7.1.1. Absolute Maximum Ratings Exceeding these maximum ratings can result in damage to the Evaluation Kit. Min. Max. Units Supply Voltage (V Current into or out of V... -
Page 40: Operating Characteristics
Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B 7.1.3. Operating Characteristics For the following conditions unless otherwise specified: = 7.2V, Tamb = +25°C. Notes Min. Typ. Max. Units DC Parameters (CMX991 Powersaved) – – (CMX992 Powersaved) (CMX991– VCO and PLL only) –... - Page 41 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B 400MHz Tx Operation (CMX991 only) Ω Input Impedance – – Frequency Range (Default Components) – Output Level – – Carrier Leakage Adjacent Channel Power – Adjacent Channel Power – – 800MHz Tx Operation (CMX991 only) Ω...
- Page 42 Evaluation Kit for CMX991 and CMX992 EV9910B/EV9920B CML does not assume any responsibility for the use of any circuitry described. No IPR or circuit patent licences are implied. CML reserves the right at any time without notice to change the said circuitry and any part of this product specification.
- Page 43 The Product Data Amendment series of documents is produced to provide basic details of changes to CML data publications. 1.0 Introduction This document describes the changes made to the EV9910B and EV9920 EvKit user manual, Publication No: UM9910/5 May 2010 to produce the updated version: UM9910/6 September 2010. 2.0 Reference Document(s) Product user manual: UM9910/6 September 2010.
- Page 44 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: CML Microcircuits EV9910B EV9920B...
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