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This user's guide describes the characteristics, operation, and use of the
DAC7811EVM - a 12-bit, synchronous-serial-interface, digital-to-analog converter
evaluation module (EVM). A complete circuit description, a schematic diagram, and bill
of materials are included.
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EVM Overview
1.1
Features
• Evaluation board for the 12-bit current output DAC7811
• Onboard reference and buffer circuits
• High-speed serial interface
• Modular design for use with a variety of DSP and microcontroller interface boards
1.2
Introduction
The DAC7811 is a single, 12-bit, serial-input, current-output, digital-to-analog (DAC) converter operating
from a single 3-V to 5-V power supply. This converter provides excellent 4-quadrant multiplication
characteristics, with a large signal multiplying bandwidth of 10 MHz. An integrated feedback resistor
provides temperature tracking and full-scale voltage output when combined with an external cur-
rent-to-voltage (I-to-V) precision amplifier. The EVM provides the external I-to-V amplifier and DPDT
switch to allow unipolar and bipolar output operation.
The modular EVM form factor allows direct evaluation of the DAC's performance and operating
SLAU163 - September 2005
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User's Guide
SLAU163 - September 2005
DAC7811EVM
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Related Manuals for Texas Instruments DAC7811EVM
Summary of Contents for Texas Instruments DAC7811EVM
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Page 1: Table Of Contents
SLAU163 – September 2005 DAC7811EVM This user’s guide describes the characteristics, operation, and use of the DAC7811EVM – a 12-bit, synchronous-serial-interface, digital-to-analog converter evaluation module (EVM). A complete circuit description, a schematic diagram, and bill of materials are included. Contents .................. -
Page 2: Analog Interface
HPA449 Demonstration Board from SoftBaugh, Inc. (www.softbaugh.com). Field programmable gate array (FPGA) users may also use the DAC7811EVM with a variety of Xilinx FPGAs by obtaining the Texas Instruments Analog Adapter Kit (part number ADS-TI-AD-DAU) from Avnet Electronics Marketing. -
Page 3: Digital Interface
SPARE Power Supplies The DAC7811EVM board requires ±15 Vdc (max) for the analog section. This includes the 10-V reference (U1) and its buffer (U3), an INA105 used to derive the –10-V reference voltage (U4), and the output buffers (U2). All applied voltages should be from clean dc sources that are current limited to prevent damage caused by accidental short circuits. -
Page 4: Evm Operation
U2 to J1.4. The analog output range depends on the configuration of the EVM and the reference applied to the DAC7811. See Sections 3 and 4.2 of this user's guide and the DAC7811 data sheet (SBAS337) to determine the maximum analog output range. DAC7811EVM SLAU163 – September 2005... -
Page 5: Evm Bill Of Materials And Schematic
Samtec TSM-105-01-T-DV-P J3B (bottom side) 5 Pin, Dual Row, SMT socket (10 Pos.) Samtec SSW-105-22-F-D-VS-K 20K Ω, 0603, 5%, 0.1 W resistor R1 R13 Yageo America 9C06031A2002JLHFT 20K Ω, 4mm POT R3 R4 Bourns 3214W-1-203E SLAU163 – September 2005 DAC7811EVM... - Page 6 EG2209 TP1 TP2 Turret Type Test Point MillMax 2348-2-00-01-00-00-07 REF102 REF102AU OPA2277 OPA2277U OPA277 OPA277U INA105 INA105KU DAC7811 DAC7811IDGST 7 Pin, Dual Row, 2mm Header Samtec TMM-107-03-T-D 3 Pin, Single Row, 2mm Header Samtec TMM-103-03-T-S DAC7811EVM SLAU163 – September 2005...
- Page 7 Revision History ECN Number Approved Initial Release BP_OUT OPA2277U 0 ohm BP_OUT 18pF 19 20 17 18 15 16 0.1µF 13 14 11 12 VOUT J2_B OPA2277UA CLKX 0.1µF 11 12 13 14 15 16 17 18 19 20 DAC_IOUT CLKX SCLK IOUT2...
- Page 8 EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As...
- Page 9 EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2005, Texas Instruments Incorporated DAC7811EVM...
- Page 10 TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products...
- Page 11 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments DAC7811EVM...
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