Texas Instruments OPA1652AIDRGR

Overview

OPA1652AIDRGR 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 10 V/µs slew rate while operating on ±2.25 V to ±18 V supplies. Its rail-to-rail output swing within 800 mV of rails into 2 kΩ enables maximum dynamic range in line-level and headphone driver stages.

For engineers reviewing the OPA1652AIDRGR datasheet, OPA1652AIDRGR pinout, OPA1652AIDRGR application, or OPA1652AIDRGR equivalent, key selection criteria include ultra-low noise density, distortion performance below –126 dB, channel separation >–120 dB, thermal performance in WSON-8 (R_θJA = 66.9°C/W), and phase-reversal protection for robust input overdrive handling.

Technical Context

The OPA1652AIDRGR implements a folded-cascode input stage with rail-to-rail Class AB output topology, enabling simultaneous low noise, low distortion, and wide supply flexibility. Its independent channel circuitry eliminates crosstalk even under overload, and internal phase-reversal protection clamps output instead of inverting polarity when inputs exceed common-mode range.

It operates across –40°C to +85°C with guaranteed performance at ±15 V, ±2.25 V, and ±18 V supplies. Input bias current remains ≤±100 pA, common-mode rejection exceeds 100 dB, and open-loop gain is ≥106 dB - all critical for precision audio summing, filtering, and buffering where DC accuracy and AC fidelity are co-required.

Key Specifications

Pinout & Package

OPA1652AIDRGR is packaged in an 8-pin WSON (DRG) with exposed thermal pad, measuring 3.00 mm × 3.00 mm. The thermal pad must be soldered to V– for specified thermal performance (R_θJA = 66.9°C/W) and stable operation under sustained load.

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 OPA1652AIDRGR uniquely balances ultra-low noise, FET-input impedance, phase-reversal immunity, and WSON-8 thermal efficiency - making it optimal for space-constrained, high-fidelity dual-channel audio signal chains where both AC fidelity and DC robustness are required.

Availability

OPA1652AIDRGR 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 ramp.

Supply support for OPA1652AIDRGR 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 expertise in precision amplifiers and audio signal chain solutions.

The OPA1652AIDRGR 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 input protection in professional and premium consumer equipment.

FAQ

What is the maximum capacitive load the OPA1652AIDRGR can drive stably?

The OPA1652AIDRGR is stable driving up to 100 pF capacitive load in unity-gain configuration without external compensation. For loads exceeding 100 pF, a small series resistor (typically 10–50 Ω) at the output is recommended to maintain phase margin above 45°. This behavior is verified in Figure 19 and Figure 20 of the OPA1652AIDRGR datasheet, where overshoot remains below 10% up to 400 pF with appropriate isolation resistance.

Does the OPA1652AIDRGR support single-supply operation?

Yes, the OPA1652AIDRGR supports true single-supply operation from 4.5 V to 36 V. Its input common-mode range extends to (V–) + 0.5 V, and rail-to-rail output swings within 800 mV of both rails - enabling use in 5 V microcontroller-based audio interfaces or 12 V automotive systems without level-shifting circuitry.

How does the thermal pad on the OPA1652AIDRGR package affect performance?

The exposed thermal pad on the OPA1652AIDRGR (WSON-8) must be soldered to the V– plane to achieve the specified R_θJA of 66.9°C/W. Without this connection, junction temperature rise increases significantly - degrading THD+N, increasing offset drift, and risking thermal shutdown under sustained 30 mA output load. TI's layout guidelines require minimum 4×4 array of thermal vias to inner ground planes.

Is the OPA1652AIDRGR pin-compatible with other dual op amps in WSON-8?

No, the OPA1652AIDRGR has a unique pinout among TI's WSON-8 op amps: Pin 4 is V– (not NC or shutdown), and Pins 5/6 are +IN B/–IN B - differing from OPA1671, OPA192, and TLV9062. Direct replacement requires PCB layout revision; always verify pin functions using the "Pin Functions" table in section 5 of the OPA1652AIDRGR datasheet.

What is the guaranteed THD+N performance over temperature for the OPA1652AIDRGR?

The OPA1652AIDRGR guarantees THD+N ≤0.00005% at 1 kHz, VO = 3 VRMS, G = 1 across its full operating temperature range of –40°C to +85°C. This specification is validated per TI's production test flow and confirmed in the Electrical Characteristics table (Section 6.6), ensuring consistent high-fidelity performance in automotive and studio environments.