Overview
The INA137UA/2K5G4, produced by Texas Instruments, is a high-performance differential line receiver. It consists of op amps with on-chip precision resistors, making it ideal for high-performance audio applications. The device is characterized by its low distortion, high slew rate, and fast settling time, ensuring excellent dynamic response. It operates over a wide supply range of ±4V to ±18V and is available in 8-pin DIP and SO-8 surface-mount packages. The INA137UA/2K5G4 is designed to provide superior performance in various demanding applications, including audio differential line reception, instrumentation, and current monitoring.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Total Harmonic Distortion + Noise (f = 1kHz) | VIN = 10Vrms | - | 0.0005 | - | % |
| Slew Rate | - | - | 14 | - | V/µs |
| Settling Time (to 0.01%) | - | - | 3 | - | µs |
| Supply Voltage Range | - | ±4 | ±18 | - | V |
| Quiescent Current (per Amplifier) | IO = 0 | ±2.4 | ±2.9 | - | mA |
| Common-Mode Rejection Ratio (CMRR) | VCM = ±46.5V, RS = 0Ω | 74 | 90 | - | dB |
| Output Voltage Swing | - | (V+) - 2 | (V+) - 1.8 | - | V |
| Output Current Limit (Continuous) | - | - | ±60 | - | mA |
| Operating Temperature Range | - | -40 | - | 85 | °C |
Key Features
- Single and Dual Versions: Available in both single (INA137) and dual (INA2137) configurations.
- Low Distortion: 0.0005% at 1kHz, ensuring high-quality audio performance.
- High Slew Rate: 14V/µs for excellent dynamic response.
- Fast Settling Time: 3µs to 0.01% for rapid signal settling.
- Wide Supply Range: Operates from ±4V to ±18V (8V to 36V total supply).
- Low Quiescent Current: Maximum of 2.9mA per amplifier.
- High CMRR: Common-Mode Rejection Ratio of 90dB.
- Fixed Gain: ±6dB gain settings.
- Packages: Available in 8-pin DIP and SO-8 surface-mount packages for the single version, and 14-pin DIP and SO-14 for the dual version.
Applications
- Audio Differential Line Receiver: Ideal for high-performance audio applications.
- G = 1/2 or G = 2 Amplifier: Can be used as a gain stage with fixed gain settings.
- Instrumentation Building Block: Suitable for various instrumentation applications.
- Current Shunt Monitor: Can be used to monitor current in shunt configurations.
- Voltage-Controlled Current Source: Useful in applications requiring controlled current sources.
- Ground Loop Eliminator: Helps in eliminating ground loops in audio and instrumentation systems.
Q & A
- What is the primary function of the INA137UA/2K5G4?
The INA137UA/2K5G4 is a differential line receiver designed for high-performance audio applications.
- What are the key features of the INA137UA/2K5G4?
Key features include low distortion, high slew rate, fast settling time, wide supply range, low quiescent current, and high CMRR.
- What are the available package types for the INA137UA/2K5G4?
It is available in 8-pin DIP and SO-8 surface-mount packages.
- What is the operating temperature range of the INA137UA/2K5G4?
The device operates over an extended industrial temperature range of –40°C to +85°C.
- What is the typical total harmonic distortion + noise at 1kHz?
The typical total harmonic distortion + noise at 1kHz is 0.0005%.
- What is the slew rate of the INA137UA/2K5G4?
The slew rate is 14V/µs.
- What is the settling time to 0.01%?
The settling time to 0.01% is 3µs.
- What is the common-mode rejection ratio (CMRR) of the INA137UA/2K5G4?
The CMRR is typically 90dB.
- Can the INA137UA/2K5G4 be used in instrumentation applications?
Yes, it is suitable for various instrumentation applications due to its high performance and stability.
- How does the INA137UA/2K5G4 help in eliminating ground loops?
It helps in eliminating ground loops by providing a high CMRR and stable operation, which reduces common-mode noise.
