Analog Devices Inc. OP213FPZ

Overview

OP213FPZ from Analog Devices is a dual-channel, low-noise, low-drift, single-supply operational amplifier optimized for precision analog signal conditioning in battery-powered and internally calibrated systems. It delivers 4.7 nV/√Hz voltage noise density at 1 kHz, 0.2 μV/°C max offset drift, and 3.4 MHz gain bandwidth, enabling high-resolution strain gage and RTD amplifier designs operating from 5 V or ±15 V supplies.

For engineers reviewing the OP213FPZ datasheet, OP213FPZ pinout, OP213FPZ application, or OP213FPZ equivalent, this page provides verified specifications, SOIC_N package layout, real-world use cases in digital scales and temperature transducer amplification, and two validated alternative op-amps with documented functional trade-offs.

Technical Context

The OP213FPZ belongs to the OPx13 family designed specifically for unipolar supply operation (4 V to 36 V) while maintaining precision DC performance-low input offset (100 μV typ), ultra-low drift (0.2 μV/°C), and rail-to-rail output swing within 1 V of V+ and to within hundreds of μV of V−. Its patented bipolar-CMOS hybrid output stage enables true zero-volt output capability in single-supply configurations.

It features unity-gain stability, no phase reversal under normal common-mode range (V− to V+ −1 V), and guaranteed performance across −40°C to +85°C. Input bias current remains below 600 nA over temperature, and channel separation exceeds 105 dB at 1 kHz, supporting accurate dual-channel instrumentation without crosstalk.

Key Specifications

Pinout & Package

OP213FPZ is housed in an 8-lead narrow-body SOIC_N (SO-8) surface-mount package with standard pinout and no internal connections on pins 1 and 5 (NULL). The package meets JEDEC MS-012AC standards and supports reflow soldering per IPC/JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8628ARZ and OPA2188AIDR, OP213FPZ offers the optimal balance of low broadband noise, wide bandwidth, and robust single-supply operation-making it uniquely suited for high-fidelity analog front-ends in battery-powered instrumentation where both AC and DC performance matter.

Availability

OP213FPZ is available at Aetrix Electronics and suitable for digital scale amplifiers, strain gage interfaces, RTD thermometer front-ends, thermocouple signal conditioners, and low-noise microphone preamplifiers requiring stable component supply and extended temperature reliability.

Supply support for OP213FPZ 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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The OPx13 family-including OP213FPZ-was engineered for precision single-supply sensor signal conditioning in internally calibrated systems, targeting applications where low noise, low drift, and rail-to-rail output are non-negotiable.

FAQ

What supply voltages does the OP213FPZ support?

The OP213FPZ operates from single supplies ranging from 4 V to 36 V or dual supplies from ±2 V to ±18 V. It is fully specified at ±15 V and 5 V, delivering guaranteed performance-including 4.7 nV/√Hz noise and 0.2 μV/°C drift-across the entire industrial temperature range (−40°C to +85°C). The OP213FPZ maintains rail-to-rail output swing and full input common-mode range under all supported supply conditions.

Does the OP213FPZ require external offset nulling?

No, the OP213FPZ does not include offset null pins and is not designed for external trimming. Its guaranteed maximum input offset voltage is 250 μV (F grade) at 25°C and 325 μV over −40°C to +85°C-low enough for most precision applications without adjustment. Unlike the OP113, the OP213FPZ omits pins 1 and 5 for offset trim; those pins are internally disconnected (NULL) and must remain unconnected.

Can the OP213FPZ drive 600 Ω loads effectively?

Yes, the OP213FPZ is fully specified driving 600 Ω loads: output voltage swing is guaranteed to be ≥3.9 V (high) and ≤8 mV (low) at 5 V supply, and ±13.9 V at ±15 V. It delivers ±40 mA short-circuit current and maintains 105 dB channel separation even under 600 Ω loading-making it suitable for driving legacy instrumentation inputs, ADC reference buffers, and low-impedance transducer interfaces without external gain stages.

How does the OP213FPZ prevent phase reversal?

The OP213FPZ integrates internal phase reversal protection that ensures stable operation as long as both inputs remain within the specified common-mode range (V− to V+ −1 V). If either input is driven beyond this range-e.g., below ground in single-supply mode-a series current-limiting resistor (≤10 kΩ) should be added to restrict input current to <2 mA. This design eliminates the need for external diodes in properly biased circuits, simplifying PCB layout and improving reliability.

Is the OP213FPZ pin-compatible with other OPx13 family members?

The OP213FPZ shares identical 8-lead SOIC_N pinout with OP113 and OP413 variants, but functional compatibility is limited to dual-channel use. While pin positions for power (4/V−, 8/V+), inputs (2/−IN A, 3/+IN A, 6/+IN B, 7/−IN B), and outputs (1/OUT A, 5/OUT B) match, OP113 is single-channel and OP413 is quad-channel-so direct substitution requires matching channel count and board layout review. OP213FPZ is not a drop-in replacement for OP113 or OP413 without schematic and layout revision.