Texas Instruments INA146
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. The input common-mode range extends beyond both supply rails, making the INA146 an excellent choice for both single and dual supply applications. The INA146 is available in the SO-8 surfacemount package specified for the extended industrial temperature range, –40°C to 85°C.| Part No. | INA146 |
|---|---|
| Datasheet | INA146 Download |
| Manufacturer |  Texas Instruments |
| Description | Programmable Gain Difference Amplifier |
| Buy | Stock & Price |
FEATURES
● High common-mode voltage: – 40 V at VS = 5 V – ±100 V at VS = ±15 V● Differential gain = 0.1 V/V TO 100 V/V: – Set with External Resistors
● Low quiescent current: 570 µA
● Wide supply range: – Single Supply: 4.5 V to 36 V – Dual Supplies: ±2.25 V to ±18 V
● Low gain error: 0.025%
● High common-mode rejection: 80 dB 2
APPLICATIONS
● Battery cell formation & test equipment● AC drive control module
● HVAC controller
● Professional audio amplifier (rack mount)
● Programmable DC power source
● Data acquisition (DAQ) 3
DESCRIPTION
High-voltage capability also affords inherent input protection. On-chip precision resistors are laser-trimmed to achieve accurate gain and high common-mode rejection. Excellent TCR tracking of these resistors provides continued high precision over temperature. A 10:1 difference amplifier provides 0.1 V/V gain when the output amplifier is used as a unity-gain buffer. In this configuration, input voltages up to ±100 V can be measured. Gains greater than 0.1 V/V can be set with an external resistor pair without affecting the common-mode input range.
