ultra-low-noise, high-bandwidth instrumentation amplifier with fixed gain of 2000


Product details


Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 8 Input offset (+/-) (Max) (uV) 35 Gain (Min) (V/V) 2000 Gain (Max) (V/V) 2000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 1.5 CMRR (Min) (dB) 132 Input offset drift (+/-) (Max) (uV/C) 0.45 Input bias current (+/-) (Max) (nA) 50 Iq (Typ) (mA) 6.2 Bandwidth at min gain (Typ) (MHz) 2.8 Gain error (+/-) (Max) (%) 0.15 Operating temperature range (C) -40 to 125 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.055 Gain non-linearity (+/-) (Max) (%) 0.001 open-in-new Find other Instrumentation amplifiers

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 open-in-new Find other Instrumentation amplifiers


  • Fixed gain of 2000 V/V
  • Access to internal nodes for filtering
  • Ultra-low noise: 1.5 nV/√Hz input voltage noise (maximum)
  • Precision super-beta input performance:
    • Low offset voltage: 35 µV (maximum)
    • Low offset voltage drift: 0.45 µV/°C (maximum)
    • Low input bias current: 25 nA (typical)
    • Low gain drift: 5 ppm/°C (maximum)
  • Bandwidth: 2.8 MHz
  • Slew rate: 45 V/µs
  • Common-mode rejection: 132 dB (minimum)
  • Supply range:
    • Single supply: 8 V to 36 V
    • Dual supply: ±4 V to ±18 V
  • Specified temperature range: –40°C to +125°C
  • Package: 8-pin SOIC

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The INA848 is a fixed-gain instrumentation amplifier optimized for high-precision measurements, such as very-small, fast, differential input signals. TI’s super-beta topology provides a very low input bias current and current noise. The well-matched transistors help achieve a very low offset and offset drift. Matching of the internal resistors yields a high common-mode rejection ratio of 132 dB across the full input-voltage range, and a very low gain drift error of 5 ppm/⁰C (max).

The current-feedback topology of the INA848 produces a wide bandwidth of 2.8 MHz at a fixed gain of 2000, thereby eliminating the need for subsequent gain stages. The very-low noise floor of 1.3 nV/√Hz minimizes the impact on the equivalent number of bits (ENOB) when interfacing with high-resolution analog-to-digital converters (ADCs). The INA848 provides the flexibility of adding filters between the gain stages (pins 2 and 3) to maintain an adequate signal integrity.

These unique features of the INA848 make this device an excellent choice for applications requiring high-precision measurements, such as high-end medical instrumentation, electroencephalography, vibration sensing, and displacement measurements.

This device is designed for 8-V to 36-V single supplies, or ±4-V to ±18-V on dual supplies.

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Technical documentation

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Type Title Date
* Datasheet INA848 Ultra-Low-Noise (1.5 nV/√Hz), High-Bandwidth Instrumentation Amplifier With Fixed Gain of 2000 datasheet Sep. 24, 2020
Technical articles What is an instrumentation amplifier? Aug. 09, 2019
Technical articles How to layout a PCB for an instrumentation amplifier Oct. 14, 2016
Technical articles Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) Nov. 25, 2013

Design & development

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Design tools & simulation

SBOMBI3.ZIP (23 KB) - TINA-TI Spice Model
SBOMBI4.ZIP (38 KB) - PSpice Model
SBOMBI5.TSC (40 KB) - TINA-TI Reference Design
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Analog engineer's calculator
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)
Common-Mode Input Range Calculator for Instrumentation Amplifiers
INA-CMV-CALC The Common-Mode Input Range Calculator is tool for quickly generating plots of an instrumentation amplifier’s common-mode input range vs output. The tool is compatible with both 2-amp and 3-amp instrumentation amplifiers utilizing any supply range.

The Common-Mode Input Range Calculator is pre-loaded (...)

  • Preloaded with 20 of TI’s most popular instrumentation amplifier specifications
  • Customizable supply, gain, and voltage reference options
  • Calculator displays output limitations graphically and numerically

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SOIC (D) 8 View options

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