High-Voltage, Programmable Gain Difference Amplifier
Product details
Parameters
Package | Pins | Size
Features
- 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
Description
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.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | High-Voltage, Programmable Gain Difference Amplifier datasheet | Sep. 27, 1999 |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | Mar. 28, 2017 | |
| Application note | High-Voltage Signal Conditioning for Low-Voltage ADCs (Rev. B) | May 18, 2015 | |
| Technical articles | Difference Amplifiers—the need for well-matched resistors | Apr. 24, 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
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 (...)
Features
- Simplifies prototyping of SMT IC’s
- Supports 6 common package types
- Low Cost
Design tools & simulation
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
- (...)
Reference designs
Design files
-
download TIPD138 Gerber.zip (2729KB) -
download TIPD138 BOM.pdf (196KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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