Low-Cost Digitally Programmable Gain Amplifier Reference Design TIPD204 (ACTIVE)

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Key Document

Description

This simple and low-cost digitally programmable gain amplifier design creates non-inverting gains ranging from 6dB (2V/V) to 60dB (1000V/V). The design is based on a general purpose op amp and a digital potentiometer as one of the gain-setting elements. The digital potentiometer is controlled with a standard I2C digital interface.

Features
  • Digital Programmed Gain Range:  6dB - 60dB (2V/V - 1000V/V)
  • Controlled with I2C Digital Commands
  • Features Non-Voltatile EEPROM memory
  • Power Supply Voltage ±2.7 V to ±5.5 V
  • Verified reference design includes theory, calculated error analysis, component selection, PCB layout, and measured results

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Schematic/Block Diagram

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Test Data

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA316  10-MHz, Low-Power, Low-Noise, RRIO, 1.8-V CMOS Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TPL0102-100  256-Taps Dual-Channel Digital Potentiometer With I2C Interface and Nonvolatile Memory  Data converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA316 Download Download
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TPL0102-100 Download -
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 488 09 Nov 2015
Design files (2)
Title Type Size (KB) Date
PDF 201 03 Dec 2015
PDF 369 03 Dec 2015
Related Tools & Software

Software (1)



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