Texas Instruments DRV134PAG4

Overview

DRV134PAG4 from Texas Instruments is a precision audio-balanced line driver IC that converts single-ended input signals to high-fidelity differential outputs with +6 dB gain (G = 2), 50 Ω matched output impedance, <0.0005% THD+N at 1 kHz, and ±18 V supply capability. It operates in professional audio systems driving 600 Ω loads over long cables while maintaining common-mode rejection >68 dB.

For engineers reviewing the DRV134PAG4 datasheet, DRV134PAG4 pinout, DRV134PAG4 application, or DRV134PAG4 equivalent, this page delivers verified specifications, functional mode details (differential vs. single-ended), real-world cable-driving performance data, and validated alternative options for balanced audio signal transmission.

Technical Context

The DRV134PAG4 implements a cross-coupled differential output stage with on-chip laser-trimmed thin-film resistors, enabling precise 50 Ω series output impedance matching and optimized output common-mode rejection (OCMR ≥68 dB typical). Its architecture supports both differential-output mode (floating ±VO pair) and single-ended mode (grounded –VO or +VO).

It features dual sensing inputs (+Sense/–Sense) for feedback configuration, internal gain-setting resistors yielding fixed +6 dB differential gain, and operation across –55°C to +125°C. The device is characterized for low-noise (–98 dBu RTO), high slew rate (15 V/µs), and stable drive into ≥1 µF capacitive loads.

Key Specifications

Pinout & Package

SOL-16 surface-mount package (10.30 mm × 7.50 mm body size), RoHS-compliant, with exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar audio-balanced line driver applications.

Compared with DRV134PA, DRV134PAG4 adds RoHS compliance without performance trade-offs; compared with SSM2142TR, it eliminates external termination components, improves OCMR by >10 dB, and reduces THD+N by half - directly lowering system-level distortion and layout complexity.

Availability

DRV134PAG4 is available at Aetrix Electronics and suitable for professional audio mix consoles, telecom analog interfaces, Hi-Fi equipment output stages, and industrial instrumentation signal conditioning requiring stable component supply and long-term lifecycle support.

Supply support for DRV134PAG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of leadership in high-performance audio and precision signal chain solutions.

The DRV134PAG4 belongs to TI's audio-balanced line driver product line, engineered specifically for professional-grade analog audio transmission where low distortion, high common-mode rejection, and robust cable driving are critical.

FAQ

What is the primary function of the DRV134PAG4 in an audio system?

The DRV134PAG4 functions as a precision differential line driver that converts single-ended audio signals into balanced, noise-immune differential outputs. It provides fixed +6 dB gain, 50 Ω matched output impedance, and >68 dB common-mode rejection - making it ideal for transmitting high-fidelity audio over long cables without degradation. The DRV134PAG4 achieves this using on-chip laser-trimmed resistors and a cross-coupled output stage.

Can the DRV134PAG4 operate with a single supply voltage?

No, the DRV134PAG4 requires dual symmetric supplies (e.g., ±12 V or ±15 V) and does not support single-supply operation. Its V+ and V– pins must be biased with opposite-polarity rails ranging from ±4.5 V to ±18 V. Attempting single-supply use will result in incorrect biasing, loss of output swing, and potential damage. The DRV134PAG4 is designed exclusively for bipolar operation in professional audio signal chains.

How does the DRV134PAG4 handle capacitive loads such as long audio cables?

The DRV134PAG4 is explicitly characterized for stable operation with ≥1 µF capacitive load on each output - sufficient for >1000 ft of typical shielded twisted-pair audio cable. Its internal compensation and 50 Ω series output resistance ensure monotonic step response and <10% overshoot even under heavy capacitive loading. This eliminates the need for external isolation resistors or RC networks when using the DRV134PAG4 in cable-driving applications.

What is the significance of the +Sense and –Sense pins on the DRV134PAG4?

The +Sense and –Sense pins provide feedback nodes for regulating the common-mode voltage at the +VO and –VO outputs. When connected directly to their respective outputs (standard differential mode), they enable precise control of output common-mode level and maximize common-mode rejection ratio (OCMR ≥68 dB). These pins allow the DRV134PAG4 to maintain optimal balance and minimize ground-loop errors in real-world cabling environments.

Is the DRV134PAG4 pin-compatible with the DRV135 series?

No, the DRV134PAG4 (SOL-16) is not pin-compatible with the DRV135 (SO-8). They share functional equivalence but differ in pin count, layout, and package dimensions: DRV134PAG4 has 16 pins with dedicated NC positions and separate Sense/VO routing, while DRV135 consolidates functionality into 8 pins. PCB redesign is required when substituting between them. The DRV134PAG4 retains full feature set including independent Sense pin access, which the DRV135 omits.