Texas Instruments DRV135UA/2K5G4

Overview

DRV135UA/2K5G4 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 - deployed in professional audio mix consoles and telecom systems requiring noise-immune analog transmission.

For engineers reviewing the DRV135UA/2K5G4 datasheet, DRV135UA/2K5G4 pinout, DRV135UA/2K5G4 application, or DRV135UA/2K5G4 equivalent, this page delivers verified specifications, SO-8 package layout, real-world audio system integration context, and validated alternative options for balanced line driver selection.

Technical Context

The DRV135UA/2K5G4 implements a cross-coupled differential output stage with on-chip laser-trimmed 50 Ω series resistors, delivering precisely matched differential outputs and high common-mode output impedance (1.6 kΩ). Its internal architecture enables stable operation into large capacitive loads (up to 1 µF) and maintains low distortion across full output swing.

It supports both differential-output mode (standard, G = +2) and single-ended configurations (G = ±2), with dedicated +Sense/–Sense pins enabling accurate output common-mode voltage monitoring. The device operates over –55°C to +125°C and is fully specified for industrial audio applications requiring extended temperature reliability.

Key Specifications

Pinout & Package

DRV135UA/2K5G4 is housed in an 8-pin SOIC (SO-8) surface-mount package measuring 4.90 mm × 3.91 mm, with gull-wing leads and standard JEDEC MS-012AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SSM2142ARZ and INA134PA, the DRV135UA/2K5G4 delivers lower distortion, tighter resistor matching, and broader temperature stability - making it the optimal choice for new professional audio designs requiring guaranteed 0.0005% THD+N and 68 dB OCMR, while INA134PA serves only as its receiver counterpart.

Availability

DRV135UA/2K5G4 is available at Aetrix Electronics and suitable for audio mix consoles, telecom interfaces, and Hi-Fi equipment requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for DRV135UA/2K5G4 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 signal chain components.

The DRV135UA/2K5G4 belongs to TI's precision audio line driver product line, engineered specifically for noise-immune analog transmission in professional audio, broadcast, and industrial communication systems.

FAQ

What is the primary function of the DRV135UA/2K5G4 in an audio system?

The DRV135UA/2K5G4 functions as a precision balanced line driver that converts a single-ended input signal into a high-fidelity differential output pair. It provides +6 dB gain, 50 Ω matched output impedance, and exceptional common-mode noise rejection - enabling robust analog audio transmission over long cables. The DRV135UA/2K5G4 is explicitly designed for use in professional audio infrastructure where signal integrity and EMI immunity are critical.

Does the DRV135UA/2K5G4 require external gain-setting resistors?

No, the DRV135UA/2K5G4 does not require external gain-setting resistors. Its +6 dB (G = 2) differential gain is set by on-chip laser-trimmed thin-film resistors, ensuring precise and stable gain without external components. This internal trimming also guarantees tight matching between the +VO and –VO output paths, directly contributing to its 68 dB typical output common-mode rejection (OCMR) specification.

Can the DRV135UA/2K5G4 drive long audio cables reliably?

Yes, the DRV135UA/2K5G4 is specifically characterized for driving long audio cables - including 500 ft installations - with stable operation into high capacitive loads (≥1 µF). Its high slew rate (15 V/µs), low output impedance (50 Ω), and internal compensation enable clean step response even with Belden 8451/9452 cable capacitance. The DRV135UA/2K5G4 maintains <0.0005% THD+N under these conditions, as confirmed in TI's SBOS094B datasheet Figure 31.

What is the purpose of the +Sense and –Sense pins on the DRV135UA/2K5G4?

The +Sense and –Sense pins on the DRV135UA/2K5G4 provide dedicated feedback nodes tied directly to the +VO and –VO output terminals. They enable accurate monitoring and regulation of output common-mode voltage, supporting stable operation and maximizing common-mode rejection ratio (CMRR). In standard differential mode, +Sense connects to +VO and –Sense connects to –VO; these pins must not be left floating and are essential for achieving the specified 68 dB OCMR.

Is the DRV135UA/2K5G4 pin-compatible with the DRV134 series?

No, the DRV135UA/2K5G4 is not pin-compatible with the DRV134. While both share identical functionality and electrical specs, the DRV135UA/2K5G4 uses an 8-pin SOIC package with pins VIN, Gnd, +VO, –VO, +Sense, –Sense, V+, and V–, whereas the DRV134 uses either 8-pin DIP or 16-pin SOL packages with different pinouts and NC placements. PCB layout and footprint must be redesigned when substituting between DRV134 and DRV135UA/2K5G4.