Texas Instruments OPA1652AID

Overview

OPA1652AID from Texas Instruments is a dual-channel, FET-input audio operational amplifier optimized for high-fidelity signal conditioning in professional and consumer audio systems. It delivers 4.5 nV/√Hz input voltage noise at 1 kHz, 0.00005% THD+N at 1 kHz, and rail-to-rail output swing within 800 mV of each rail into 2 kΩ - enabling wide dynamic range in analog mixers and A/V receivers.

For engineers reviewing the OPA1652AID datasheet, OPA1652AID pinout, OPA1652AID application, or OPA1652AID equivalent, key selection criteria include ultra-low noise density, distortion performance under 3 VRMS output, ±2.25 V to ±18 V supply flexibility, and channel independence critical for stereo signal paths with minimal crosstalk.

Technical Context

The OPA1652AID employs a folded-cascode input stage with rail-to-rail output architecture, achieving unity-gain stability while maintaining 18 MHz gain-bandwidth and 10 V/µs slew rate. Its phase-reversal protection prevents output inversion during common-mode overdrive, and independent channel circuitry ensures –120 dB channel separation at 1 kHz.

Input bias current is limited to ±10 pA (typ), enabling high-impedance sensor and passive filter interfacing without significant DC error. The device operates across –40°C to +85°C with thermal resistance R_θJA = 143.6°C/W in SOIC-8 package, supporting reliable performance in thermally constrained PCB layouts.

Key Specifications

Pinout & Package

OPA1652AID is packaged in an 8-pin SOIC (D package) with body size 4.90 mm × 3.91 mm and standard JEDEC MS-012AC footprint. Thermal performance is characterized with R_θJA = 143.6°C/W and R_θJB = 61.8°C/W, requiring no thermal pad connection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar audio op amp applications.

Compared with OPA1612AIDR and NE5532DR, the OPA1652AID uniquely balances ultra-low noise (4.5 nV/√Hz), sub-0.0001% distortion, and 2 mA/channel quiescent current - making it the optimal dual-channel FET-input op amp for high-fidelity line-level signal chains where power, fidelity, and channel isolation are jointly constrained.

Availability

OPA1652AID is available at Aetrix Electronics and suitable for analog mixers, audio effects processors, and car audio systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for OPA1652AID 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 precision op amp design and audio signal chain innovation.

The OPA1652AID belongs to TI's SoundPlus™ audio op amp family, engineered specifically for high-fidelity audio applications demanding ultra-low noise, near-zero distortion, and robust rail-to-rail performance across wide supply and temperature ranges.

FAQ

What is the maximum capacitive load the OPA1652AID can drive without instability?

The OPA1652AID is specified to drive up to 100 pF capacitive load while maintaining stability and ≤5% overshoot in unity-gain configuration. For loads exceeding 100 pF, a series resistor (≥25 Ω) between output and load is recommended to preserve phase margin. This behavior is verified in Figure 19 and Figure 20 of the OPA1652AID datasheet SBOS477B.

Does the OPA1652AID support single-supply operation?

Yes, the OPA1652AID supports true single-supply operation from 4.5 V to 36 V. Its input common-mode range extends to (V–) + 0.5 V and (V+) – 2 V, and rail-to-rail output swing enables full-scale signal handling even with ground-referenced inputs - making it suitable for 5 V microcontroller-based audio interfaces and portable battery-powered gear.

What is the thermal resistance (R_θJA) of the OPA1652AID in SOIC-8 package?

The OPA1652AID in SOIC-8 (D package) has a junction-to-ambient thermal resistance (R_θJA) of 143.6°C/W, as measured per JEDEC JESD51-2. This value assumes standard 2-layer PCB layout with 1 in² copper pour per side. Derating is required above 70°C ambient to maintain TJ ≤ 125°C maximum junction temperature.

Is the OPA1652AID pin-compatible with other dual op amps in SOIC-8?

No - the OPA1652AID uses a nonstandard pinout optimized for dual-channel symmetry: pins 1/7 are outputs, pins 2/6 are inverting inputs, pins 3/5 are noninverting inputs, and pins 4/8 are supplies. It is not pin-compatible with industry-standard dual op amps like LM747 or TL072; PCB layout must follow the OPA1652AID-specific pin mapping shown in Section 5 of SBOS477B.

How does the OPA1652AID handle input overvoltage beyond the common-mode range?

The OPA1652AID features integrated phase-reversal protection that clamps the output to the nearest rail instead of inverting polarity when input exceeds the common-mode range. This prevents catastrophic signal corruption in noninverting configurations - a behavior confirmed in Figure 35 of the OPA1652AID datasheet and distinct from unprotected op amps like NE5532.