Overview
The DRV135, produced by Texas Instruments, is a high-performance audio balanced line driver designed for demanding audio applications. It is part of the DRV13x series, which includes the DRV134 and DRV135 models. The DRV135 is particularly noted for its excellent audio performance, low distortion, and high output drive capability. It is available in a space-saving SO-8 surface-mount package, making it ideal for applications where board space is limited.
The device operates over a wide supply voltage range of ±4.5 V to ±18 V and is specified for operation over the extended industrial temperature range of –40°C to +85°C. It features low quiescent current, high slew rate, and excellent output common-mode rejection, making it suitable for a variety of audio transmission and processing applications.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (V+ to V–) | ±4.5 | ±18 | ±18 | V |
| Input Voltage Range | V– | V+ | V | |
| Operating Temperature | –55 | 125 | °C | |
| Junction Temperature | 150 | °C | ||
| Total Harmonic Distortion + Noise (THD+N) | 0.0005% | 0.001% | % (f = 1 kHz, VO = 10Vrms) | |
| Noise Floor | –98 | dBu | ||
| Input Impedance (ZIN) | 10 | kΩ | ||
| Differential Gain | 5.8 | 6 | dB | |
| Output Voltage Swing (No Load) | (V+) – 3 | (V+) – 2.5 | V (Positive) | |
| Output Voltage Swing (No Load) | (V–) + 2 | (V–) + 1.5 | V (Negative) | |
| Load Capacitance, Stable Operation | 1 | µF | ||
| Short-Circuit Current | ±85 | mA | ||
| Small-Signal Bandwidth | 1.5 | MHz | ||
| Slew Rate | 15 | V/µs | ||
| Settling Time: 0.01% | 2.5 | µs | ||
| Quiescent Current (IQ) | –5.5 | ±5.2 | 5.5 | mA |
Key Features
- Wide Supply Range: Operates from ±4.5 V to ±18 V, making it versatile for various power supply conditions.
- Low Distortion and Noise: Very low Total Harmonic Distortion + Noise (THD+N) of 0.0005% at 1 kHz and –98 dBu noise floor, ensuring high-quality audio performance.
- High Slew Rate and Fast Settling Time: 15 V/µs slew rate and 2.5 µs settling time to 0.01%, providing excellent dynamic response.
- Low Quiescent Current: ±5.2 mA quiescent current, which is beneficial for power-sensitive applications.
- High Output Drive Capability: Capable of driving large capacitive loads associated with long audio cables.
- Excellent Output Common-Mode Rejection: Laser-trimmed resistors ensure high common-mode rejection ratio (typically 68 dB).
- Compact Packaging: Available in an SO-8 surface-mount package, ideal for space-constrained designs.
Applications
- Audio Differential Line Drivers: Ideal for transmitting analog audio signals without degradation.
- Audio Mix Consoles: Used in professional audio mixing equipment.
- Distribution Amplifiers: Suitable for distributing audio signals across multiple channels.
- Graphic and Parametric Equalizers: Enhances audio signal processing in equalization applications.
- Dynamic Range Processors: Used in audio compression and expansion systems.
- Digital Effects Processors: Supports various digital audio effects.
- Telecom Systems: Applicable in telecommunications equipment for audio signal transmission.
- Hi-Fi Equipment: Used in high-fidelity audio systems for superior sound quality.
- Industrial Instrumentation: Suitable for industrial applications requiring high-quality audio signals.
Q & A
- What is the supply voltage range of the DRV135?
The DRV135 operates from a supply voltage range of ±4.5 V to ±18 V.
- What is the typical quiescent current of the DRV135?
The typical quiescent current of the DRV135 is ±5.2 mA.
- What is the slew rate of the DRV135?
The slew rate of the DRV135 is 15 V/µs.
- What is the settling time of the DRV135 to 0.01%?
The settling time of the DRV135 to 0.01% is 2.5 µs.
- What is the typical noise floor of the DRV135?
The typical noise floor of the DRV135 is –98 dBu.
- What is the common-mode rejection ratio (CMRR) of the DRV135?
The DRV135 has a typical CMRR of 68 dB.
- What are the package options for the DRV135?
The DRV135 is available in an SO-8 surface-mount package.
- What is the operating temperature range of the DRV135?
The DRV135 is specified for operation over the extended industrial temperature range of –40°C to +85°C.
- What are some typical applications of the DRV135?
The DRV135 is used in audio differential line drivers, audio mix consoles, distribution amplifiers, graphic and parametric equalizers, dynamic range processors, digital effects processors, telecom systems, Hi-Fi equipment, and industrial instrumentation.
- How does the DRV135 handle large capacitive loads?
The DRV135 is capable of driving large capacitive loads associated with long audio cables due to its high output drive capability.
