Overview
The INA159AIDGKRG4, produced by Texas Instruments, is a high slew rate difference amplifier designed for precision applications. It consists of a precision operational amplifier combined with a precision resistor network, providing a fixed gain of 0.2. This amplifier is particularly useful for interfacing ±10V signals to single-supply analog-to-digital converters (ADCs), especially those operating on a single +5V supply. The on-chip resistors are laser-trimmed to ensure accurate gain and high common-mode rejection. The INA159 operates on a single or split supply from +1.8V to +5.5V and is specified for operation over the extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage | - | - | 5.5 | V |
| Input Voltage Range | -30 | - | 30 | V |
| Offset Voltage | ±100 | - | ±500 | µV |
| Offset Voltage Drift | ±1.5 | - | - | µV/°C |
| Gain | 0.2 | - | - | V/V |
| Gain Accuracy | ±0.024% | - | - | % |
| Bandwidth | - | 1.5 | - | MHz |
| Slew Rate | - | 15 | - | V/µs |
| Common-Mode Rejection Ratio (CMRR) | 80 | 96 | - | dB |
| Operating Temperature | -40 | - | 125 | °C |
| Package Type | - | - | MSOP-8 | - |
Key Features
- High slew rate of 15V/µs and wide bandwidth of 1.5MHz.
- Low offset voltage of ±100µV and low offset drift of ±1.5µV/°C.
- Single-supply operation down to 1.8V and compatibility with split supplies up to 5.5V.
- High common-mode rejection ratio (CMRR) of up to 96dB.
- Rail-to-rail common-mode voltage capability at the inputs.
- Laser-trimmed on-chip resistors for accurate gain and high CMRR.
- Available in MSOP-8 surface-mount package.
- Specified for operation over the extended industrial temperature range of −40°C to +125°C.
Applications
- Industrial process controls.
- Instrumentation.
- Differential to single-ended conversion.
- Audio line receivers.
- Interfacing ±10V signals to single-supply analog-to-digital converters (ADCs).
Q & A
- What is the primary function of the INA159AIDGKRG4?
The INA159AIDGKRG4 is a high slew rate difference amplifier designed to interface ±10V signals to single-supply analog-to-digital converters (ADCs).
- What is the gain of the INA159AIDGKRG4?
The gain of the INA159AIDGKRG4 is fixed at 0.2.
- What is the slew rate of the INA159AIDGKRG4?
The slew rate is 15V/µs.
- What is the operating temperature range of the INA159AIDGKRG4?
The operating temperature range is −40°C to +125°C.
- What package type is the INA159AIDGKRG4 available in?
The INA159AIDGKRG4 is available in an MSOP-8 surface-mount package.
- What is the common-mode rejection ratio (CMRR) of the INA159AIDGKRG4?
The CMRR is up to 96dB.
- Can the INA159AIDGKRG4 operate on a single supply?
Yes, it can operate on a single supply from +1.8V to +5.5V.
- What are some typical applications of the INA159AIDGKRG4?
Typical applications include industrial process controls, instrumentation, differential to single-ended conversion, and audio line receivers.
- How accurate is the gain of the INA159AIDGKRG4?
The gain accuracy is ±0.024%.
- What is the input voltage range for the INA159AIDGKRG4?
The input voltage range is ±30V.
