Home Amplifiers Difference amplifiers
Home
Amplifiers
Difference amplifiers

INA146

ACTIVE

High-Voltage, Programmable Gain Difference Amplifier

Order now
Data sheet
High-Voltage, Programmable Gain Difference Amplifier

INA146

ACTIVE
Data sheet Order now

Product details

Number of channels (#) 1 Vs (Min) (V) 2.76 Vs (Max) (V) 36 CMRR (Min) (dB) 76 Common mode input low (Min) (V) -100 Common mode input high (Max) (V) 100 Input offset (+/-) (Max) (uV) 5000 Iq (Typ) (mA) 0.6 Small signal bandwidth (Typ) (MHz) 0.5 Slew rate (Typ) (V/us) 0.45 Gain (Min) (V/V) 0.1 Gain (Max) (V/V) 100 Gain error (+/-) (Max) (%) 0.1 Rating Catalog Operating temperature range (C) -40 to 85 Gain drift (Max) (ppm/C) 1
Number of channels (#) 1 Vs (Min) (V) 2.76 Vs (Max) (V) 36 CMRR (Min) (dB) 76 Common mode input low (Min) (V) -100 Common mode input high (Max) (V) 100 Input offset (+/-) (Max) (uV) 5000 Iq (Typ) (mA) 0.6 Small signal bandwidth (Typ) (MHz) 0.5 Slew rate (Typ) (V/us) 0.45 Gain (Min) (V/V) 0.1 Gain (Max) (V/V) 100 Gain error (+/-) (Max) (%) 0.1 Rating Catalog Operating temperature range (C) -40 to 85 Gain drift (Max) (ppm/C) 1
open-in-new Find other Difference amplifiers
SOIC (D) 8 19 mm² 3.91 x 4.9
open-in-new Find other Difference amplifiers
  • HIGH COMMON-MODE VOLTAGE:
    • +40V at V S = +5V
    • ±100V at V S = ±15V
  • DIFFERENTIAL GAIN = 0.1V/V TO 100V/V:
    • Set with External Resistors
  • LOW QUIESCENT CURRENT: 570µA
  • WIDE SUPPLY RANGE:
    • Single Supply: 4.5V to 36V
    • Dual Supplies: ±2.25V to ±18V
  • LOW GAIN ERROR: 0.025%
  • HIGH CMR: 80dB
  • SO-8 PACKAGE
  • HIGH COMMON-MODE VOLTAGE:
    • +40V at V S = +5V
    • ±100V at V S = ±15V
  • DIFFERENTIAL GAIN = 0.1V/V TO 100V/V:
    • Set with External Resistors
  • LOW QUIESCENT CURRENT: 570µA
  • WIDE SUPPLY RANGE:
    • Single Supply: 4.5V to 36V
    • Dual Supplies: ±2.25V to ±18V
  • LOW GAIN ERROR: 0.025%
  • HIGH CMR: 80dB
  • SO-8 PACKAGE

open-in-new Find other Difference amplifiers

The INA146 is a precision difference amplifier that can be used to accurately attenuate high differential voltages and reject high common-mode voltages for compatibility with common signal processing voltage levels. High-voltage capability also affords inherent input protection. The input common-mode range ex-tends beyond both supply rails, making the INA146 well-suited for both single and dual supply applica-tions.

On-chip precision resistors are laser-trimmed to achieve accurate gain and high common-mode rejection. Ex-cellent TCR tracking of these resistors assures contin-ued high precision over temperature.

A 10:1 difference amplifier provides 0.1V/V gain when the output amplifier is used as a unity-gain buffer. In this configuration, input voltages up to ±100V can be measured. Gains greater than 0.1V/V can be set with an external resistor pair without affect-ing the common-mode input range.

The INA146 is available in the SO-8 surface-mount package specified for the extended industrial tempera-ture range, -40°C to +85°C.

The INA146 is a precision difference amplifier that can be used to accurately attenuate high differential voltages and reject high common-mode voltages for compatibility with common signal processing voltage levels. High-voltage capability also affords inherent input protection. The input common-mode range ex-tends beyond both supply rails, making the INA146 well-suited for both single and dual supply applica-tions.

On-chip precision resistors are laser-trimmed to achieve accurate gain and high common-mode rejection. Ex-cellent TCR tracking of these resistors assures contin-ued high precision over temperature.

A 10:1 difference amplifier provides 0.1V/V gain when the output amplifier is used as a unity-gain buffer. In this configuration, input voltages up to ±100V can be measured. Gains greater than 0.1V/V can be set with an external resistor pair without affect-ing the common-mode input range.

The INA146 is available in the SO-8 surface-mount package specified for the extended industrial tempera-ture range, -40°C to +85°C.

open-in-new Find other Difference amplifiers
Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 4
Type Title Date
* Data sheet High-Voltage, Programmable Gain Difference Amplifier datasheet 27 Sep 1999
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note High-Voltage Signal Conditioning for Low-Voltage ADCs (Rev. B) 18 May 2015
Technical article Difference Amplifiers—the need for well-matched resistors 25 Apr 2012

Design & development

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

Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

document-pdfAcrobat User guide
In stock
Limit: 5
Simulation model

INA146 TINA-TI Spice Model (Rev. A)

SBFC027A.ZIP (5 KB) - TINA-TI Spice Model
Download
Simulation model

INA146 PSpice Model (Rev. A)

SBOC023A.ZIP (39 KB) - PSpice Model
Download
Simulation model

INA146 TINA-TI Reference Design (Rev. B)

SBOC155B.TSC (104 KB) - TINA-TI Reference Design
Download
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 (...)
Request
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 (...)
document-pdfAcrobat User guide
View options
Reference designs

TIPD138 — SPI programmable 16-bit, 36V, 1A Power Supply with Integrated Current Shunt

This Verified Design provides the theory, component selection, simulation, PCB design, and measurement details for a SPI controlled 36V power supply capable of sourcing 1A.  It also includes an intergrated high-side current shunt accurate to 1% across multiple decades of current load.  The (...)
document-generic Schematic
document-pdfAcrobat User guide
Package Pins Download
SOIC (D) 8 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos