Overview
The INA148UA is a precision, low-power, unity-gain difference amplifier produced by Texas Instruments. It is designed to handle high common-mode input voltage ranges, making it suitable for a variety of applications requiring accurate differential signal amplification. The amplifier consists of a monolithic precision bipolar op amp with a thin-film resistor network, which is laser trimmed for accurate 1V/V differential gain and high common-mode rejection. The INA148UA operates on single or dual supplies and is available in a small SO-8 surface-mount package, specified for the –40°C to +85°C extended industrial temperature range.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package Type | SOIC-8 | |
| Operating Temperature Range | –40 to +85 | °C |
| Storage Temperature Range | –55 to +125 | °C |
| Supply Voltage Range (Single) | 2.7 to 36 | V |
| Supply Voltage Range (Dual) | ±1.35 to ±18 | V |
| Common-Mode Voltage Range | ±200V at VS = ±15V | |
| Differential Gain | 1V/V | |
| Quiescent Current | 260µA | |
| Gain Error | 0.075% max | |
| Nonlinearity | 0.002% max | |
| Common-Mode Rejection Ratio (CMR) | 86dB |
Key Features
- High common-mode input voltage range: ±200V at VS = ±15V
- Fixed differential gain of 1V/V
- Low quiescent current: 260µA
- Wide supply range: Single supply from 2.7V to 36V, dual supplies from ±1.35V to ±18V
- Low gain error: 0.075% max
- Low nonlinearity: 0.002% max
- High common-mode rejection ratio (CMR): 86dB
- SO-8 surface-mount package
Applications
- Current shunt measurements
- Differential sensor amplifiers
- Line receivers
- Battery-powered systems
- Automotive instrumentation
- Stacked cell monitors
Q & A
- What is the common-mode input voltage range of the INA148UA?
The INA148UA has a common-mode input voltage range of ±200V at VS = ±15V.
- What is the differential gain of the INA148UA?
The differential gain of the INA148UA is fixed at 1V/V.
- What is the quiescent current of the INA148UA?
The quiescent current of the INA148UA is 260µA.
- What is the supply voltage range for the INA148UA?
The INA148UA can operate on a single supply from 2.7V to 36V or dual supplies from ±1.35V to ±18V.
- What is the gain error of the INA148UA?
The gain error of the INA148UA is 0.075% max.
- What is the nonlinearity of the INA148UA?
The nonlinearity of the INA148UA is 0.002% max.
- What is the common-mode rejection ratio (CMR) of the INA148UA?
The CMR of the INA148UA is 86dB.
- In what package is the INA148UA available?
The INA148UA is available in an SO-8 surface-mount package.
- What are some typical applications of the INA148UA?
Typical applications include current shunt measurements, differential sensor amplifiers, line receivers, battery-powered systems, automotive instrumentation, and stacked cell monitors.
- What is the operating temperature range of the INA148UA?
The operating temperature range of the INA148UA is –40°C to +85°C.
