Texas Instruments OPA2202ID

Overview

OPA2202ID from Texas Instruments is a dual-channel, precision, low-noise, heavy capacitive-load drive operational amplifier built on super-beta bipolar process. It delivers 200 µV max offset voltage, 1 µV/°C max drift, 9 nV/√Hz input voltage noise, and stable operation with up to 25 nF capacitive loads - ideal for high-accuracy sensor signal conditioning in lab instrumentation and data acquisition systems.

For engineers reviewing the OPA2202ID datasheet, OPA2202ID pinout, OPA2202ID application, or OPA2202ID equivalent, key selection criteria include its ±2.25 V to ±18 V supply range, 1 MHz gain-bandwidth product, ultra-high 3000 GΩ input impedance, EMI-hardened architecture, and guaranteed performance across –40°C to +105°C.

Technical Context

The OPA2202ID implements a complementary bipolar super-beta input stage enabling ultra-low flicker noise and exceptional DC precision. Its internal architecture eliminates phase inversion and supports unity-gain stability even with heavy capacitive loads (≥25 nF), enabled by optimized compensation and robust output stage design.

It features rail-to-rail input common-mode range (V– + 1.5 V to V+ – 1.5 V), 126 dB minimum CMRR and PSRR, and integrated thermal/short-circuit/EMI protection - making it suitable for demanding industrial and medical front-end signal chains where long-term drift and noise integrity are critical.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed pad optional; thermally optimized for low R_θJA (180.1°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2189IDR and AD8638ARZ-REEL7, the OPA2202ID uniquely balances low 1/f noise, robust 25 nF drive, and bipolar-linearity - making it preferred for wideband precision conditioning where zero-drift artifacts (chopping noise, aliasing) must be avoided.

Availability

OPA2202ID is available at Aetrix Electronics and suitable for lab instrumentation, data acquisition systems, and medical monitoring equipment requiring stable component supply with full traceability and extended temperature-grade assurance.

Supply support for OPA2202ID 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 industrial signal chain solutions.

The OPAx202 family was designed specifically for high-accuracy, noise-sensitive applications demanding both DC precision and dynamic drive capability - bridging the gap between traditional precision op-amps and high-speed types.

FAQ

What is the maximum capacitive load the OPA2202ID can drive while maintaining stability?

The OPA2202ID is specified to remain stable with capacitive loads up to 25 nF, achieving 5-µs settling time to 0.1% under those conditions. This capability is verified per Figure 28 in the SBOS812H datasheet and eliminates the need for external isolation resistors in typical ADC driver or filter interface applications. The OPA2202ID achieves this via internal compensation optimized for heavy capacitive loads.

Does the OPA2202ID exhibit phase reversal when input common-mode voltage exceeds rails?

No, the OPA2202ID does not exhibit phase reversal under overdrive conditions - a key reliability feature confirmed in Figure 29 of the SBOS812H datasheet. This behavior is inherent to its super-beta bipolar input stage and allows safe use in comparator-like configurations or fault-tolerant sensor interfaces where inputs may transiently exceed supply rails.

What is the input bias current specification for the OPA2202ID over temperature?

The OPA2202ID has a maximum input bias current of ±2 nA over the full –40°C to +105°C operating range, as specified in Section 6.7 of SBOS812H. At 25°C, typical bias current is ±0.25 nA. This ultra-low, temperature-stable bias current enables accurate interfacing with high-impedance sources such as piezoelectric sensors or pH electrodes without significant voltage error.

Can the OPA2202ID operate from a single 5-V supply?

Yes, the OPA2202ID supports single-supply operation from 4.5 V to 36 V, per Section 6.3 of SBOS812H. With a 5-V supply, its input common-mode range extends from 1.5 V to 3.5 V (V– + 1.5 V to V+ – 1.5 V), and output swing reaches within 750 mV of each rail under no-load conditions - enabling use in low-voltage industrial I/O modules and battery-powered instrumentation.

How does the OPA2202ID compare to the OP-07 and OP-27 in terms of replacement suitability?

The OPA2202ID is explicitly positioned as a drop-in replacement for OP-07 and OP-27 op-amps, as stated in the "Features" section of SBOS812H. It matches or exceeds their key specs - including lower offset (200 µV vs OP-07's 60 µV typ but 250 µV max), superior drift (1.5 µV/°C max vs OP-27's 0.6 µV/°C), and added capacitive drive capability - while offering modern EMI hardening and wider supply range (±2.25 V to ±18 V).