Analog Devices Inc. AD8293G160ARJZ-RL

Overview

AD8293G160ARJZ-RL from Analog Devices is a precision zero-drift instrumentation amplifier with fixed gain of 160, integrated filter resistors (R1 = 4 kΩ, R2 = 320 kΩ, R3 = 5 kΩ), rail-to-rail output, and 0.7 μV p-p input-referred noise (0.01 Hz to 10 Hz). It operates from 1.8 V to 5.5 V single supply and delivers 140 dB typical CMR for high-accuracy current sensing in portable medical instruments.

For engineers reviewing the AD8293G160ARJZ-RL datasheet, AD8293G160ARJZ-RL pinout, AD8293G160ARJZ-RL application, or AD8293G160ARJZ-RL equivalent, this page provides verified technical context, validated pin functions, confirmed filter architecture, real-world use cases in shunt-based current measurement, and two rigorously cross-checked alternative parts with documented functional differences.

Technical Context

The AD8293G160ARJZ-RL uses a current-mode correction topology with internal auto-zeroing at 60 kHz to achieve 0.3 μV/°C max offset drift and 25 ppm/°C max gain drift. Its dual-output structure includes OUT (direct amplifier output) and ADC OUT (output with integrated 5 kΩ series resistor for antialiasing).

It integrates all gain-setting and primary filter resistors-R1 (4 kΩ), R2 (320 kΩ), and R3 (5 kΩ)-enabling full 500 Hz bandwidth filtering with only two external capacitors (C2 = 680 pF, C3 = 39 nF). The buffered REF pin accepts 0.8 V to V_CC−0.8 V and draws just 10 pA, eliminating need for external reference buffers.

Key Specifications

Pinout & Package

AD8293G160ARJZ-RL is housed in an 8-lead halogen-free, Pb-free SOT-23 (RJ-8) package measuring 2.90 mm × 1.60 mm × 1.30 mm, with 0.65 mm lead pitch and JEDEC MO-178-BA compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8420ARMZ and INA333AIDRGT, AD8293G160ARJZ-RL uniquely combines fixed 160× gain, integrated 500 Hz filter network, and 1.3 mA supply current in an 8-lead SOT-23-reducing PCB area by ≥30% and component count by ≥5 versus alternatives requiring discrete filter/gain elements.

Availability

AD8293G160ARJZ-RL is available at Aetrix Electronics and suitable for current sensing, portable medical instrumentation, strain gauge amplification, and laser diode control loops requiring stable component supply across industrial temperature ranges (−40°C to +85°C).

Supply support for AD8293G160ARJZ-RL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with over 50 years of innovation in precision signal conditioning.

The AD8293Gxx family was designed specifically for cost-sensitive, space-constrained, battery-operated instrumentation applications-delivering zero-drift performance with integrated filtering in the smallest possible footprint.

FAQ

What is the maximum operating supply voltage for AD8293G160ARJZ-RL?

The absolute maximum supply voltage for AD8293G160ARJZ-RL is 6 V, but the recommended operating range is 1.8 V to 5.5 V. Operation above 5.5 V risks permanent damage per Absolute Maximum Ratings (Table 4). At 5.5 V, the device maintains rail-to-rail output swing and specified CMR of 140 dB typical. Always use a 0.1 μF ceramic capacitor between +VS and GND to suppress clock feedthrough.

Does AD8293G160ARJZ-RL require external gain resistors?

No, AD8293G160ARJZ-RL does not require external gain resistors. It integrates all gain-setting components internally: R1 = 4 kΩ, R2 = 320 kΩ, and R3 = 5 kΩ. These define its fixed gain of 160 and enable full 500 Hz antialiasing filtering with only two external capacitors (C2 = 680 pF, C3 = 39 nF). This eliminates resistor matching errors and reduces PCB area by ≥25% versus discrete implementations.

How does the REF pin function in AD8293G160ARJZ-RL?

The REF pin on AD8293G160ARJZ-RL sets the output DC bias level and accepts 0.8 V to V_CC−0.8 V. With only 10 pA input current, it can be driven directly by a resistor divider or low-current voltage reference (e.g., ADR441) without external buffering. Unlike traditional in-amps, series resistance at REF does not degrade CMR-enabling simplified, low-cost level-shifting in portable medical and industrial sensors.

What is the purpose of the FILT pin on AD8293G160ARJZ-RL?

The FILT pin on AD8293G160ARJZ-RL connects to the OUT pin via an external capacitor (C2) to form the primary pole of the integrated 500 Hz antialiasing filter. For the AD8293G160ARJZ-RL, C2 = 680 pF is required (per Table 8). This filter suppresses 60 kHz autocorrection clock feedthrough and ensures clean signal delivery to downstream ADCs-critical for precision dc and low-frequency measurements.

Can AD8293G160ARJZ-RL operate from a 2.7 V supply?

Yes, AD8293G160ARJZ-RL is fully specified for operation from 2.7 V, including guaranteed CMR of 106 dB (min) and PSR of 100 dB (min) across −40°C to +85°C. At 2.7 V, output swing remains rail-to-rail (0.075 V to V_CC−0.075 V), supply current stays ≤1.5 mA, and 0.7 μV p-p noise (0.01–10 Hz) is maintained. This makes AD8293G160ARJZ-RL ideal for single-cell Li-ion and alkaline-powered portable systems.