Texas Instruments OPA1652AIDRGT

Overview

OPA1652AIDRGT 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 across ±2.25 V to ±18 V supplies, enabling low-noise preamplification in analog mixers and A/V receivers.

For engineers reviewing the OPA1652AIDRGT datasheet, OPA1652AIDRGT pinout, OPA1652AIDRGT application, or OPA1652AIDRGT equivalent, key selection criteria include verified rail-to-rail output swing (within 800 mV of rails at 2 kΩ), channel separation of –120 dB at 1 kHz, and confirmed WSON-8 package thermal performance (R_θJA = 66.9°C/W).

Technical Context

The OPA1652AIDRGT employs a folded-cascode input stage with rail-to-rail output architecture, delivering ultra-low distortion and wide gain-bandwidth (18 MHz at G = 1) without phase reversal under common-mode overdrive. Its independent channel circuitry ensures minimal crosstalk even during overload conditions.

It operates across –40°C to +85°C with 2 mA per channel quiescent current, supports single-supply (4.5–36 V) or split-supply (±2.25–±18 V) configurations, and features internal ESD protection (±2000 V HBM) and input overvoltage clamping via back-to-back diodes.

Key Specifications

Pinout & Package

OPA1652AIDRGT is housed in an 8-pin WSON package (3.00 mm × 3.00 mm) with exposed thermal pad on underside, requiring connection to V– for optimal thermal performance and specified electrical behavior.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar audio operational amplifier applications.

Compared with OPA1652AIDRGT, OPA1612AIDR offers superior noise performance at double the quiescent current and larger SOIC-8 footprint, while NE5532APDR provides legacy compatibility but sacrifices 0.5 dB SNR and adds 10× more distortion in high-fidelity paths.

Availability

OPA1652AIDRGT is available at Aetrix Electronics and suitable for analog mixers, audio effects processors, and car audio systems requiring stable component supply, consistent parametric performance, and long-term industrial availability.

Supply support for OPA1652AIDRGT 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 high-performance audio signal chain solutions.

The OPA165x product line was engineered specifically for professional and premium consumer audio applications demanding ultra-low noise, vanishingly low distortion, and robust rail-to-rail output drive in compact packages.

FAQ

What is the maximum capacitive load the OPA1652AIDRGT can drive while maintaining stability?

The OPA1652AIDRGT maintains stability with up to 100 pF capacitive load in unity-gain configuration, as verified in Figure 19 and Figure 20 of the SBOS477B datasheet. For loads exceeding 100 pF, external compensation (e.g., series resistor at output) is required. This specification applies directly to the OPA1652AIDRGT in its WSON-8 package with thermal pad connected to V–.

Does the OPA1652AIDRGT support single-supply operation, and what is the minimum supply voltage?

Yes, the OPA1652AIDRGT supports true single-supply operation from 4.5 V to 36 V total supply range. The minimum functional supply is 4.5 V (e.g., V+ = 4.5 V, V– = 0 V), with rail-to-rail output swing specified down to 800 mV from each rail at 2 kΩ load. This capability is confirmed for the OPA1652AIDRGT across its full operating temperature range (–40°C to +85°C).

How does the thermal pad on the OPA1652AIDRGT package affect electrical performance?

The exposed thermal pad on the OPA1652AIDRGT must be soldered to the V– net to achieve specified thermal resistance (R_θJA = 66.9°C/W) and ensure stable electrical performance. Leaving it floating or connecting it to ground degrades thermal performance and may cause output swing compression or increased distortion. This requirement is explicitly defined for the OPA1652AIDRGT DRG package in Section 6.4 of SBOS477B.

Is the OPA1652AIDRGT pin-compatible with other dual op-amps in WSON-8 packages?

No, the OPA1652AIDRGT has a unique pinout (OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, V+) that differs from industry-standard WSON-8 op-amps like the OPA2350 or TLV2462. Direct substitution requires PCB layout revision. This pin assignment is fixed for the OPA1652AIDRGT and documented in Figure 3 of SBOS477B.

What is the guaranteed common-mode rejection ratio (CMRR) for the OPA1652AIDRGT over temperature?

The OPA1652AIDRGT guarantees a minimum CMRR of 100 dB over the full operating temperature range (–40°C to +85°C), with typical performance reaching 110 dB at 25°C. This value is measured at 1 kHz and reflects the device's ability to reject noise coupled equally to both inputs-a critical parameter for balanced audio line receivers. All CMRR data applies specifically to the OPA1652AIDRGT variant.