Texas Instruments TL074IDRG4

Overview

TL074IDRG4 from Texas Instruments is a quad JFET-input operational amplifier optimized for low-noise, high-slew-rate signal conditioning in audio and precision analog systems. It delivers 20 V/μs slew rate, 37 nV/√Hz input voltage noise at 1 kHz, ±2.25 V to ±20 V dual-supply operation, and rail-to-rail common-mode input range extending to VCC+. It is widely used in pro audio mixers and battery test equipment where fidelity and DC stability are critical.

For engineers reviewing the TL074IDRG4 datasheet, TL074IDRG4 pinout, TL074IDRG4 application, or TL074IDRG4 equivalent, key selection criteria include its FET-input architecture enabling ultra-low input bias current (±1 pA typ), wide supply range accommodating both single- and dual-rail designs, and guaranteed 125 dB open-loop gain ensuring high-precision closed-loop performance in sensor interfaces and active filters.

Technical Context

The TL074IDRG4 implements a fully differential JFET-input stage with cascoded gain and class-AB output stage, supporting stable unity-gain operation with up to 300 pF capacitive load. Its internal EMI/RF filtering and 1.5 kV HBM ESD rating enable robust operation in electrically noisy industrial environments.

It operates across –40°C to +125°C with specified offset drift of ±2 μV/°C and PSRR of ±10 μV/V over full temperature and supply range - making it suitable for unregulated power domains and thermally varying embedded instrumentation.

Key Specifications

Pinout & Package

The TL074IDRG4 is supplied in a 14-pin SOIC (D) package with standard JEDEC MS-012AC footprint (5.3 mm × 10.2 mm, 1.27 mm pitch). Thermal resistance R_θJA is 114.2°C/W, supporting operation up to +125°C ambient with appropriate PCB copper area.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad JFET-input operational amplifier applications.

Compared with TL074CDR, TL074IDRG4 offers superior temperature stability and noise performance for industrial deployments; versus OPA4134UA, it trades some noise advantage for broader supply range and rail-inclusive input capability - making it more versatile in mixed-signal power electronics.

Availability

TL074IDRG4 is available at Aetrix Electronics and suitable for solar energy inverters, motor drive control modules, and pro audio equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TL074IDRG4 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 heritage in precision op-amps and power management ICs.

The TL07x family was engineered for cost-sensitive, high-fidelity analog signal conditioning - delivering JFET-input performance with industrial-grade reliability in audio, test equipment, and power conversion systems.

FAQ

What is the maximum capacitive load the TL074IDRG4 can drive stably?

The TL074IDRG4 is characterized for stable operation with up to 300 pF capacitive load at unity gain, as confirmed in Section 5.7 of the TI datasheet. For loads exceeding this value, external compensation (e.g., series resistor at output) is required to maintain phase margin above 56° and prevent oscillation in precision applications.

Does the TL074IDRG4 support single-supply operation?

Yes, the TL074IDRG4 supports single-supply operation from 4.5 V to 40 V. Its common-mode input range extends to VCC+, allowing direct interface with sensors or DACs referenced to the positive rail - provided the output swing remains within headroom limits (e.g., 115 mV from VCC+ at 40 V supply with 10 kΩ load).

How does the TL074IDRG4 differ from the TL074H variant?

The TL074IDRG4 uses the newer "H" die revision, featuring improved specifications including 1 mV typical offset voltage, ±2 μV/°C drift, and enhanced EMI rejection. The "I" suffix denotes industrial temperature grade (–40°C to +125°C), while "DRG4" specifies tape-and-reel packaging in SOIC-14 - distinguishing it from older C/I/M variants with looser tolerances.

Is input offset adjustment supported on the TL074IDRG4?

No, the TL074IDRG4 does not provide dedicated offset null pins. Unlike earlier TL074 variants (e.g., TL074CP with pins 1 and 5 for offset trim), the D-package SOIC version omits these terminals. Offset correction must be implemented externally via feedback network trimming or digital calibration in the system MCU.

What thermal considerations apply when using the TL074IDRG4 in a 4-layer PCB?

With R_θJA = 114.2°C/W in SOIC-14, the TL074IDRG4 dissipates ~3.75 mW per amplifier (937.5 μA × 4 V typical drop), totaling ~15 mW. On a 4-layer board with 1 in² of 2-oz copper pour tied to VCC–/GND, junction temperature rise stays below 2°C - well within the –40°C to +125°C operating limit even at 85°C ambient.