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ADA4255

RECOMMENDED FOR NEW DESIGNS

Zero Drift, High Voltage, Programmable Gain Instrumentation Amplifier with Charge Pump

Part Models
3
1ku List Price
Starting From $5.05

Part Details

  • Integrated bipolar charge pump
    • Simplified isolation requirements
    • Wide input range on low voltage supplies
  • Dedicated output amplifier supplies for ADC protection
  • Low power: 83 mW (DVDD = 3 V, VDDCP = 5 V)
  • 36 precision gains from 1/16 V/V to 176 V/V
  • Robust ±60 V protected 2:1 input multiplexer
  • Low input bias current: ±1.5 nA maximum at TA = 25°C
  • Integrated input EMI filtering
  • 7 GPIOx ports with special functions
  • Sequential chip select mode
  • Excellent dc precision
    • Low input offset voltage: ±14 µV maximum
    • Low input offset voltage drift: ±0.08 µV/°C maximum
    • Gain calibration via internal memory
    • Low gain drift: ±1 ppm/°C maximum
    • High CMRR: 111 dB minimum, G = 1 V/V
  • Excitation current source
  • SPI port with checksum (CRC) support
  • Internal/external fault detection
  • Compact 28-lead, 5 mm × 5 mm LFCSP
  • Specified temperature range: −40°C to +105°C
ADA4255
Zero Drift, High Voltage, Programmable Gain Instrumentation Amplifier with Charge Pump
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Documentation

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Analog to Digital Converters 4
AD4007 RECOMMENDED FOR NEW DESIGNS 18-Bit, 2 MSPS/1 MSPS/500 kSPS, Easy Drive, Differential SAR ADCs
AD7768 RECOMMENDED FOR NEW DESIGNS 8-Channel, 24-Bit, Simultaneous Sampling ADC, Power Scaling, 110.8 kHz BW
AD7175-2 RECOMMENDED FOR NEW DESIGNS 24-Bit, 250 kSPS, Sigma-Delta ADC with 20 µs Settling and True Rail-to-Rail Buffers
AD7124-4 RECOMMENDED FOR NEW DESIGNS 4-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference
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Tools & Simulations

LTspice


Models for the following parts are available in LTspice:

  • ADA4255

In-Amp Diamond Plot Tool

The Diamond Plot Tool is a web application that generates a configuration-specific Output Voltage Range vs. Input Common-Mode Voltage graph, also known as the Diamond Plot, for Analog Devices Instrumentation Amplifiers. Based on user inputs such as supply voltage, gain, and input signal range, the tool detects saturation and recommends in-amps for which the input signal is in-range and the configuration is valid. Avoid saturation, find the best in-amp for your design, and save time.

Open Tool

Signal Chain Designer - BETA

Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

Open Tool

IBIS Model 1

SPICE Model 1

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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