Product details

Number of channels (#) 1 Vs (Max) (V) 5.5 Vs (Min) (V) 1.8 Input offset (+/-) (Max) (uV) 1200 Gain (Min) (V/V) 10 Gain (Max) (V/V) 50 Noise at 1 kHz (Typ) (nV/rt (Hz)) 43 Features Cost-optimized, Shutdown CMRR (Min) (dB) 85 Iq (Typ) (mA) 0.1 Bandwidth at min gain (Typ) (MHz) 0.1 Gain error (+/-) (Max) (%) 0.6 Operating temperature range (C) -40 to 125 Type Selectable gain Output swing headroom (to negative supply) (Typ) (V) 0.015 Output swing headroom (to positive supply) (Typ) (V) 0.015 Input common mode headroom (to negative supply) (Typ) (V) 0 Input common mode headroom (to positive supply) (Typ) (V) 0 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 4
Number of channels (#) 1 Vs (Max) (V) 5.5 Vs (Min) (V) 1.8 Input offset (+/-) (Max) (uV) 1200 Gain (Min) (V/V) 10 Gain (Max) (V/V) 50 Noise at 1 kHz (Typ) (nV/rt (Hz)) 43 Features Cost-optimized, Shutdown CMRR (Min) (dB) 85 Iq (Typ) (mA) 0.1 Bandwidth at min gain (Typ) (MHz) 0.1 Gain error (+/-) (Max) (%) 0.6 Operating temperature range (C) -40 to 125 Type Selectable gain Output swing headroom (to negative supply) (Typ) (V) 0.015 Output swing headroom (to positive supply) (Typ) (V) 0.015 Input common mode headroom (to negative supply) (Typ) (V) 0 Input common mode headroom (to positive supply) (Typ) (V) 0 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 4
SOT-23-THN (DDF) 8 8 mm² 2.9 x 2.8 WSON (DSG) 8 4 mm² 2 x 2 WSON (DSG) 8
  • Ideal for size, cost, and power conscious designs
  • Selectable gain options
    • G = 10 or G = 20 (INA350ABS)
    • G = 30 or G = 50 (INA350CDS)
  • Space saving ultra-small package options
    • 10-pin X2QFN (RUG) – 3 mm2
    • 8-pin WSON (DSG) – 4 mm2
    • 8-pin SOT23-THN (DDF) – 4.64 mm2
  • Optimized performance for 10-bit to 14-bit systems
    • CMRR: 95 dB (typ) across all gains
    • Offset voltage: 0.2 mV (typ) across all gains
    • Gain error (typ):
      • 0.05% for G = 10; 0.06% for G = 20
      • 0.075% for G = 30; 0.082% for G = 50
  • Bandwidth: 100 kHz for G = 10 (typ)
  • Drives 500 pF with less than 20% overshoot (typ)
  • Optimized quiescent current: 100 µA (typ)
  • Shutdown option for power conscious applications
  • Supply range: 1.8 V (±0.9 V) to 5.5 V (±2.75 V)
  • Specified temperature range: –40°C to 125°C
  • Ideal for size, cost, and power conscious designs
  • Selectable gain options
    • G = 10 or G = 20 (INA350ABS)
    • G = 30 or G = 50 (INA350CDS)
  • Space saving ultra-small package options
    • 10-pin X2QFN (RUG) – 3 mm2
    • 8-pin WSON (DSG) – 4 mm2
    • 8-pin SOT23-THN (DDF) – 4.64 mm2
  • Optimized performance for 10-bit to 14-bit systems
    • CMRR: 95 dB (typ) across all gains
    • Offset voltage: 0.2 mV (typ) across all gains
    • Gain error (typ):
      • 0.05% for G = 10; 0.06% for G = 20
      • 0.075% for G = 30; 0.082% for G = 50
  • Bandwidth: 100 kHz for G = 10 (typ)
  • Drives 500 pF with less than 20% overshoot (typ)
  • Optimized quiescent current: 100 µA (typ)
  • Shutdown option for power conscious applications
  • Supply range: 1.8 V (±0.9 V) to 5.5 V (±2.75 V)
  • Specified temperature range: –40°C to 125°C

INA350 is a selectable-gain instrumentation amplifier that offers four gain options across INA350ABS and INA350CDS variants available in small packages. INA350ABS has gain options of 10 or 20 and INA350CDS has gain options of 30 or 50. These gain options can be selected by toggling the gain select (GS) pin. INA350 is ideal for bridge-type sensing and for differential to single-ended conversion applications.

Built with precision matched integrated resistors, INA350 saves on BOM costs, pick-and-place machine handling costs, and board space by removing the need for precise or closely-matched external resistors. The device interface directly to low-speed, 10-bit to 14-bit, analog-to-digital converters (ADC) and is ideal for replacing discrete implementation of instrumentation amplifiers built with commodity amplifiers and discrete resistors.

Designed with the three-amplifier architecture, INA350 is optimized for delivering performance. It achieves 85 dB of minimum CMRR and 0.6% of maximum gain error, along with 1.2 mV of maximum offset across all gain options, while consuming just 125 µA of maximum quiescent current. It has an integrated shutdown option to turn off the amplifier when idle for additional power savings in battery powered applications.

INA350 is a selectable-gain instrumentation amplifier that offers four gain options across INA350ABS and INA350CDS variants available in small packages. INA350ABS has gain options of 10 or 20 and INA350CDS has gain options of 30 or 50. These gain options can be selected by toggling the gain select (GS) pin. INA350 is ideal for bridge-type sensing and for differential to single-ended conversion applications.

Built with precision matched integrated resistors, INA350 saves on BOM costs, pick-and-place machine handling costs, and board space by removing the need for precise or closely-matched external resistors. The device interface directly to low-speed, 10-bit to 14-bit, analog-to-digital converters (ADC) and is ideal for replacing discrete implementation of instrumentation amplifiers built with commodity amplifiers and discrete resistors.

Designed with the three-amplifier architecture, INA350 is optimized for delivering performance. It achieves 85 dB of minimum CMRR and 0.6% of maximum gain error, along with 1.2 mV of maximum offset across all gain options, while consuming just 125 µA of maximum quiescent current. It has an integrated shutdown option to turn off the amplifier when idle for additional power savings in battery powered applications.

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Type Title Date
* Data sheet INA350 Cost and Size Optimized, Low Power, 1.8-V to 5.5-V Selectable Gain Instrumentation Amplifier datasheet (Rev. A) 17 Dec 2021
Technical article What is an instrumentation amplifier? 09 Aug 2019
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

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SMALL-AMP-DIP-EVM — SMALL-AMP-DIP-EVM

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INA350 G10 TINA-TI Reference Design

SBOMBY6.ZIP (13 KB) - TINA-TI Reference Design
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INA350 G10 TINA-TI SPICE Model

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INA350 G20 PSpice Model

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INA350 G20 TINA-TI SPICE Model

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INA350 G20 TINA-TI Reference Design

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INA350 G10 PSpice Model

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INA350 G30 PSpice Model

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INA350 G30 TINA-TI SPICE Model

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INA350 G30 TINA-TI Reference Design

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INA350 G50 PSpice Model

SBOMBZ8.ZIP (36 KB) - PSpice Model
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INA350 G50 TINA-TI Reference Design

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INA350 G50 TINA-TI SPICE Model

SBOMC00.ZIP (4 KB) - TINA-TI Spice Model
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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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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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SOT-23-THIN (DDF) 8 View options
WSON (DSG) 8 View options

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