Overview
The DRV135UA, produced by Texas Instruments, is a high-performance audio balanced line driver designed to convert single-ended input signals into balanced output pairs. This device is part of the DRV13x series, which includes the DRV134 and DRV135 models. The DRV135UA is particularly noted for its excellent AC specifications, making it suitable for a wide range of demanding audio applications.
The device features on-chip precision resistors that are laser-trimmed for accurate gain and optimum output common-mode rejection. This ensures low signal distortion, high output levels, and a low noise floor, which are critical for maintaining audio signal integrity.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (V+ to V–) | ±4.5 | ±18 | V | |
| Operating Temperature | –55 | 125 | °C | |
| Junction Temperature | 150 | °C | ||
| Total Harmonic Distortion + Noise (THD+N) at 1 kHz | 0.0005% | |||
| Slew Rate | 15 | V/μs | ||
| Quiescent Current (IQ) | –5.5 | ±5.2 | 5.5 | mA |
| Input Impedance (ZIN) | 10 | kΩ | ||
| Output Voltage Swing (No Load) | (V+) – 3 | (V+) – 2.5 | V | |
| Load Capacitance, Stable Operation | 1 | μF | ||
| Short-Circuit Current (ISC) | ±85 | mA |
Key Features
- Balanced Output: Converts single-ended input signals to balanced output pairs.
- Low Distortion: 0.0005% at 1 kHz, ensuring high-quality audio performance.
- Wide Output Swing: Up to 17Vrms into 600 Ω loads.
- High Capacitive Load Drive: Easily drives large capacitive loads associated with long audio cables.
- High Slew Rate: 15 V/μs for excellent dynamic response.
- Wide Supply Range: ±4.5 V to ±18 V, providing flexibility in power supply design.
- Low Quiescent Current: ±5.2 mA, reducing power consumption.
- Precision Resistors: Laser-trimmed for accurate gain and optimum output common-mode rejection.
- Companion Devices: Works in conjunction with INA134 and INA137 differential line receivers for complete audio signal transmission solutions.
- Improved Replacement: An improved replacement for the SSM2142.
Applications
- Audio Differential Line Drivers: Ideal for converting single-ended signals to balanced outputs in audio systems.
- Audio Mix Consoles: Enhances audio signal quality in mixing consoles.
- Distribution Amplifiers: Used in distribution amplifiers to maintain signal integrity over long distances.
- Graphic and Parametric Equalizers: Suitable for use in equalization equipment.
- Dynamic Range Processors: Helps in maintaining dynamic range in audio processing applications.
- Digital Effects Processors: Used in digital effects processors to ensure high-quality audio output.
- Telecom Systems: Can be used in telecom systems for audio signal transmission.
- Hi-Fi Equipment: Enhances audio quality in high-fidelity equipment.
- Industrial Instrumentation: Suitable for industrial instrumentation requiring high-quality audio signals.
Q & A
- What is the primary function of the DRV135UA?
The DRV135UA converts single-ended input signals into balanced output pairs, making it suitable for high-performance audio applications.
- What is the operating temperature range of the DRV135UA?
The operating temperature range is from –55°C to 125°C.
- What is the slew rate of the DRV135UA?
The slew rate is 15 V/μs.
- What is the quiescent current of the DRV135UA?
The quiescent current is ±5.2 mA.
- What are the typical applications of the DRV135UA?
Typical applications include audio mix consoles, distribution amplifiers, graphic and parametric equalizers, dynamic range processors, digital effects processors, telecom systems, Hi-Fi equipment, and industrial instrumentation.
- What are the companion devices for the DRV135UA?
The DRV135UA works in conjunction with INA134 and INA137 differential line receivers.
- What is the maximum output voltage swing of the DRV135UA?
The maximum output voltage swing is up to 17Vrms into 600 Ω loads.
- What is the input impedance of the DRV135UA?
The input impedance is 10 kΩ.
- Can the DRV135UA drive large capacitive loads?
Yes, the DRV135UA can easily drive large capacitive loads associated with long audio cables.
- What is the total harmonic distortion + noise (THD+N) at 1 kHz for the DRV135UA?
The THD+N at 1 kHz is 0.0005%.
