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Product details

Parameters

Common mode voltage (Max) (V) 26 Common mode voltage (Min) (V) -0.2 Input offset (+/-) (Max) (uV) 55 Input offset drift (+/-) (Typ) (uV/C) 0.2 Gain (V/V) 100, 20, 200, 50 Gain error (%) 0.2 Gain error drift (+/-) (Max) (ppm/°C) 8 CMRR (Min) (dB) 96 Bandwidth (kHz) 350, 210, 150, 105 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.3 Number of channels (#) 1 Comparators (#) 0 Features Bi-directional, Low-side Capable Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

SOT-5X3 (DRL) 6 2 mm² 1.65 x 1.2 open-in-new Find other Current sense amplifiers analog output

Features

  • SOT-563 package (1.6 mm × 1.6 mm)
    • 39% smaller footprint than SC70
    • 0.55 mm package height
  • Common-mode range (VCM): –0.2 V to +26 V
  • High bandwidth: 350 kHz (A1 devices)
  • Offset voltage:
    • ±55 µV (max) at VCM = 0 V
    • ±100 µV (max) at VCM = 12 V (A4 device)
  • Output slew rate: 2 V/µs
  • Bidirectional current-sensing capability
  • Accuracy:
    • ±0.2% maximum gain error (A1, A2, A3)
    • 0.5-µV/°C maximum offset drift
  • Gain options:
    • 20 V/V (A1 devices)
    • 50 V/V (A2 devices)
    • 100 V/V (A3 devices)
    • 200 V/V (A4 devices)
  • Quiescent current: 260 µA (max)

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Description

The INA185 current sense amplifier is designed for use in cost-sensitive space constrained applications. This device is a bidirectional, current-sense amplifier (also called a current-shunt monitor) that senses voltage drop across a current-sense resistor at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INA185 integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift.

The INA185 operates from a single 2.7-V to 5.5-V power supply. The device draws a maximum supply current of 260 µA and features high slew rate and bandwidth making this device an excellent choice for many power-supply and motor-control applications.

The INA185 is available in a low profile 6-pin, SOT-563 package, and has a body size of size of only 2.56 mm2, including the device pins. All device options are specified over the extended operating temperature range of –40°C to +125°C.

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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
25
Description
The INA185 is a current sense monitor solution that provides ease of use and high performance in a small package.  The INA185EVM is intended to provide basic functional evaluation of the device family. The fixture layout is not intended as a model for the target circuit, nor it is laid out for (...)
Features
  • Evaluation of the INA185Ax in all gain options.
  • Test points to allow ease of access to device pins.
  • Capability to evaluate both high-side and low-side configurations.

Design tools & simulation

SIMULATION MODELS Download
SBOMAY3.TSC (376 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOMAY4.ZIP (37 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOMBA8.ZIP (23 KB) - PSpice Model
SIMULATION MODELS Download
SBOMBE9.ZIP (24 KB) - PSpice Model
SIMULATION MODELS Download
SBOMBF0.ZIP (24 KB) - PSpice Model
SIMULATION MODELS Download
SBOMBF1.ZIP (24 KB) - PSpice Model
SIMULATION MODELS Download
SBVM944.ZIP (12 KB) - TINA-TI Reference Design
SIMULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)
SIMULATION TOOLS Download
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 (...)
document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-5X3 (DRL) 6 View options

Ordering & quality

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