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PGA112

Texas Instruments
Part Number PGA112
Manufacturer Texas Instruments
Description Zero-Drift Programmable Gain Amplifier
Published May 1, 2022
Detailed Description Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design PGA112, PGA1...
Datasheet PDF File PGA112 PDF File

PGA112
PGA112

Overview
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design PGA112, PGA113, PGA116, PGA117 SBOS424C – MARCH 2008 – REVISED NOVEMBER 2015 PGA11x Zerø-Drift Programmable Gain Amplifier With Mux 1 Features •1 Rail-to-Rail Input and Output • Offset: 25 μV (Typical), 100 μV (Maximum) • Zerø Drift: 0.
35 μV/°C (Typical), 1.
2 μV/°C (Maximum) • Low Noise: 12 nV/√Hz • Input Offset Current: ±5 nA Maximum (25°C) • Gain Error: 0.
1% Maximum (G ≤ 32), 0.
3% Maximum (G > 32) • Binary Gains: 1, 2, 4, 8, 16, 32, 64, 128 (PGA112, PGA116) • Scope Gains: 1, 2, 5, 10, 20, 50, 100, 200 (PGA113, PGA117) • Gain Switching Time: 200 ns • 2 Channel MUX: PGA112, PGA113 10 Channel MUX: PGA116, PGA117 • Four Internal Calibration Channels • Amplifier Optimized for Driving CDAC ADCs • Output Swing: 50 mV to Supply Rails • AVDD and DVDD for Mixed Voltage Systems • IQ = 1.
1 mA (Typical) • Software and Hardware Shutdown: IQ ≤ 4 μA (Typical) • Temperature Range: –40°C to 125°C • SPI™ Interface (10 MHz) With Daisy-Chain Capability 2 Applications • Remote e-Meter Reading • Automatic Gain Control • Portable Data Acquisition • PC-Based Signal Acquisition Systems • Test and Measurement • Programmable Logic Controllers • Battery-Powered Instruments • Handheld Test Equipment 3 Description The PGA112 and PGA113 devices (binary and scope gains) offer two analog inputs, a three-pin SPI interface, and software shutdown in a 10-pin, VSSOP package.
The PGA116 and PGA117 (binary and scope gains) offer 10 analog inputs, a SPI interface with daisy-chain capability, and hardware and software shutdown in a 20-pin TSSOP package.
All versions provide internal calibration channels for system-level calibration.
The channels are tied to GND, 0.
9 VCAL, 0.
1 VCAL, and VREF, respectively.
VCAL, an external voltage connected to Channel 0, is used as the system calibration reference.
Binary gains are: 1, 2, 4, 8, 16, 32, 64, and 128; scope gains are: 1, 2, 5, 10, 20, 50, 100, and 2...


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