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INA163

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Low-Noise Low-Distortion Instrumentation Amplifier

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Data sheet
Low-Noise Low-Distortion Instrumentation Amplifier

INA163

ACTIVE
Data sheet Order now

Product details

Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 9 Input offset (+/-) (Max) (uV) 250 Gain (Min) (V/V) 1 Gain (Max) (V/V) 10000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 1 Features Current Feedback, Ultra-low noise CMRR (Min) (dB) 100 Input bias current (+/-) (Max) (nA) 12000 Iq (Typ) (mA) 10 Bandwidth at min gain (Typ) (MHz) 3.4 Gain error (+/-) (Max) (%) 0.7 Operating temperature range (C) -40 to 85 Type Resistor Output swing headroom (to negative supply) (Typ) (V) 1.8 Output swing headroom (to positive supply) (Typ) (V) -1.8 Input common mode headroom (to negative supply) (Typ) (V) 3 Input common mode headroom (to positive supply) (Typ) (V) -3 Gain non-linearity (+/-) (Max) (%) 0.0006
Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 9 Input offset (+/-) (Max) (uV) 250 Gain (Min) (V/V) 1 Gain (Max) (V/V) 10000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 1 Features Current Feedback, Ultra-low noise CMRR (Min) (dB) 100 Input bias current (+/-) (Max) (nA) 12000 Iq (Typ) (mA) 10 Bandwidth at min gain (Typ) (MHz) 3.4 Gain error (+/-) (Max) (%) 0.7 Operating temperature range (C) -40 to 85 Type Resistor Output swing headroom (to negative supply) (Typ) (V) 1.8 Output swing headroom (to positive supply) (Typ) (V) -1.8 Input common mode headroom (to negative supply) (Typ) (V) 3 Input common mode headroom (to positive supply) (Typ) (V) -3 Gain non-linearity (+/-) (Max) (%) 0.0006
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SOIC (D) 14 52 mm² 8.65 x 6
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  • LOW NOISE: 1nV/Hz at 1kHz
  • LOW THD+N: 0.002% at 1kHz, G = 100
  • WIDE BANDWIDTH: 800kHz at G = 100
  • WIDE SUPPLY RANGE: ±4.5V to ±18V
  • HIGH CMR: > 100dB
  • GAIN SET WITH EXTERNAL RESISTOR
  • SO-14 SURFACE-MOUNT PACKAGE
  • APPLICATIONS
    • PROFESSIONAL MICROPHONE PREAMPS
    • MOVING-COIL TRANSDUCER AMPLIFIERS
    • DIFFERENTIAL RECEIVERS
    • BRIDGE TRANSDUCER AMPLIFIERS

All trademarks are the property of their respective owners.
  • LOW NOISE: 1nV/Hz at 1kHz
  • LOW THD+N: 0.002% at 1kHz, G = 100
  • WIDE BANDWIDTH: 800kHz at G = 100
  • WIDE SUPPLY RANGE: ±4.5V to ±18V
  • HIGH CMR: > 100dB
  • GAIN SET WITH EXTERNAL RESISTOR
  • SO-14 SURFACE-MOUNT PACKAGE
  • APPLICATIONS
    • PROFESSIONAL MICROPHONE PREAMPS
    • MOVING-COIL TRANSDUCER AMPLIFIERS
    • DIFFERENTIAL RECEIVERS
    • BRIDGE TRANSDUCER AMPLIFIERS

All trademarks are the property of their respective owners.

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The INA163 is a very low-noise, low-distortion, monolithic instrumentation amplifier. Its current-feedback circuitry achieves very wide bandwidth and excellent dynamic response over a wide range of gain. It is ideal for low-level audio signals such as balanced low-impedance microphones. Many industrial, instrumentation, and medical applications also benefit from its low noise and wide bandwidth.

Unique distortion cancellation circuitry reduces distortion to extremely low levels, even in high gain. The INA163 provides near-theoretical noise performance for 200 source impedance. Its differential input, low noise, and low distortion provide superior performance in professional microphone amplifier applications.

The INA163’s wide supply voltage, excellent output voltage swing, and high output current drive allow its use in high-level audio stages as well.

The INA163 is available in a space-saving SO-14 surface-mount package, specified for operation over the –40°C to +85°C temperature range.

The INA163 is a very low-noise, low-distortion, monolithic instrumentation amplifier. Its current-feedback circuitry achieves very wide bandwidth and excellent dynamic response over a wide range of gain. It is ideal for low-level audio signals such as balanced low-impedance microphones. Many industrial, instrumentation, and medical applications also benefit from its low noise and wide bandwidth.

Unique distortion cancellation circuitry reduces distortion to extremely low levels, even in high gain. The INA163 provides near-theoretical noise performance for 200 source impedance. Its differential input, low noise, and low distortion provide superior performance in professional microphone amplifier applications.

The INA163’s wide supply voltage, excellent output voltage swing, and high output current drive allow its use in high-level audio stages as well.

The INA163 is available in a space-saving SO-14 surface-mount package, specified for operation over the –40°C to +85°C temperature range.

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Technical documentation

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Type Title Date
* Data sheet Low-Noise, Low-Distortion Instrumentation Amplifier datasheet (Rev. D) 16 May 2005
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps 27 Jul 2021
Technical article What is an instrumentation amplifier? 09 Aug 2019
Application note Phantom Power with Operational Amplifiers (Rev. A) 09 Nov 2018
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Technical article How to layout a PCB for an instrumentation amplifier 14 Oct 2016
Technical article Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) 25 Nov 2013

Design & development

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Simulation model

INA163 PSpice Model (Rev. A)

SBOC057A.ZIP (41 KB) - PSpice Model
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Simulation model

INA163 TINA-TI Reference Design (Rev. B)

SBOC160B.TSC (88 KB) - TINA-TI Reference Design
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Simulation model

INA163 TINA-TI Spice Model (Rev. A)

SBOM221A.ZIP (7 KB) - TINA-TI Spice Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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 (...)
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SOIC (D) 14 View options

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