Analog Devices Inc. AMP02FSZ

Overview

AMP02FSZ from Analog Devices is a high-accuracy instrumentation amplifier in 16-lead SOIC package, featuring laser-trimmed input offset voltage ≤200 µV, output offset voltage ≤8 mV, and gain accuracy ≤0.7% at G=1000. It supports gain setting from 1 to 10,000 via single external resistor RG and delivers 200 kHz bandwidth at G=1000. Used in precision thermocouple and strain gage signal conditioning.

For engineers reviewing the AMP02FSZ datasheet, AMP02FSZ pinout, AMP02FSZ application, or AMP02FSZ equivalent, key selection considerations include its ±4.5 V to ±18 V dual-supply operation, 115 dB min CMR at G=1000, input overvoltage protection to ±60 V beyond rails, reference pin for level shifting, and sense pin requiring external connection to output in SOIC variant.

Technical Context

The AMP02FSZ implements a triple-op-amp topology with transimpedance input stages followed by a unity-gain differential amplifier. Its laser-trimmed thin-film resistors ensure gain temperature coefficient ≤50 ppm/°C and enable stable performance across –40°C to +85°C.

Input protection circuitry limits differential input current to ±2.5 mA with power on and ±4 mA with power off during ±60 V overvoltage events. The reference pin provides direct dc level control of output, while the sense pin-internally unconnected in SOIC-is externally tied to OUT to close the feedback loop.

Key Specifications

Pinout & Package

AMP02FSZ is housed in a 16-lead SOIC (Wide Body, R-16) package measuring 10.5 mm × 7.6 mm × 2.35 mm (max height), JEDEC MS-013AA compliant, with coplanarity ≤0.10 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8421ARZ and INA128UA, AMP02FSZ uniquely combines laser-trimmed 200 µV offset, ±60 V input protection, and SOIC-16 pinout with sense/reference flexibility-making it optimal for certified medical, test equipment, and high-reliability industrial sensor signal chains where robustness and precision coexist.

Availability

AMP02FSZ is available at Aetrix Electronics and suitable for thermocouple amplification, strain gage signal conditioning, medical ECG front-ends, RTD readout circuits, and programmable gain instrumentation requiring stable component supply across extended temperature ranges.

Supply support for AMP02FSZ 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, serving industrial, communications, automotive, and healthcare markets since 1965.

The AMP02FSZ belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for high-accuracy, low-drift signal extraction from noisy, high-impedance sensors in demanding industrial and medical instrumentation environments.

FAQ

What is the correct connection for the SENSE pin on AMP02FSZ?

The SENSE pin on AMP02FSZ must be externally connected to the OUT pin to complete the feedback path for the output buffer stage. This connection is mandatory for proper gain accuracy and output swing performance in the 16-lead SOIC package. Failure to connect SENSE to OUT results in degraded linearity and reduced output drive capability. The AMP02FSZ datasheet explicitly states this requirement in the Applications Information section and Figure 1.

Does AMP02FSZ support single-supply operation?

AMP02FSZ is specified for dual-supply operation only, with supply voltage range ±4.5 V to ±18 V. It does not support true single-supply operation because its input common-mode range and output swing are referenced to ground and require symmetrical rails for full specification compliance. While limited operation may occur with asymmetric supplies (e.g., +15 V/0 V), key parameters like CMR, offset, and bandwidth degrade significantly and are not guaranteed.

How does the REFERENCE pin function in AMP02FSZ?

The REFERENCE pin on AMP02FSZ sets the dc level of the output voltage. It has 50 kΩ input resistance and accepts an external voltage (typically 0 V to VREF) to shift the output baseline-enabling ratiometric interfacing with ADCs or level translation into single-supply systems. Applying a voltage to REFERENCE adds directly to the output: VOUT = G × (V+IN − V−IN) + VREF. Source impedance must be ≤1 Ω to avoid CMR degradation.

What is the maximum allowable external gain resistor (RG) value for AMP02FSZ at G = 10,000?

For AMP02FSZ configured at G = 10,000, the required external gain resistor RG is 5.005 Ω, calculated using RG = 50 kΩ/(G − 1). This ultra-low value demands careful PCB layout: short traces, Kelvin connections, and low-TC metal-foil or bulk-metal resistors. At such low RG, parasitic trace resistance dominates; values below 10 Ω are impractical without 4-terminal sensing. For gains >1000, Analog Devices recommends verifying stability and noise performance empirically.

Is AMP02FSZ RoHS-compliant and lead-free?

Yes, AMP02FSZ is RoHS-compliant and lead-free. It meets EU Directive 2011/65/EU and is manufactured with lead-free terminations and halogen-free molding compound. The "Z" suffix in AMP02FSZ denotes lead-free, RoHS-compliant packaging per Analog Devices' standard product marking convention. Full compliance documentation, including material declarations and test reports, is available through Analog Devices' quality portal.