Analog Devices Inc. AD8253ARMZ-R7

Overview

AD8253ARMZ-R7 from Analog Devices is a programmable gain instrumentation amplifier (PGIA) with iCMOS® process technology, delivering 10 MHz bandwidth, 20 V/μs slew rate, and selectable gains of 1, 10, 100, or 1000. It features 10-lead MSOP packaging, ±5 V to ±15 V dual supply operation, and is optimized for high-precision sensor signal conditioning in data acquisition systems.

For engineers reviewing the AD8253ARMZ-R7 datasheet, AD8253ARMZ-R7 pinout, AD8253ARMZ-R7 application, or AD8253ARMZ-R7 equivalent, key selection criteria include guaranteed CMRR ≥100 dB at G=1000 up to 20 kHz, 780 ns settling time to 0.001%, low 1.2 μV/°C offset drift (G=1000), and digital/pin-programmable gain interface compatibility with microcontrollers and FPGA I/O.

Technical Context

The AD8253ARMZ-R7 implements a classic 3-op-amp topology with laser-trimmed internal resistor arrays enabling precise gain switching. Its iCMOS® fabrication ensures robust isolation between analog and digital sections, supporting stable operation under mixed-signal conditions.

Dual gain configuration modes-transparent (A0/A1 direct logic control) and latched (WR-triggered edge-sensitive update)-allow flexible integration into both simple sensor front-ends and complex multi-device data acquisition buses without timing conflicts or bus contention.

Key Specifications

Pinout & Package

The AD8253ARMZ-R7 is housed in a 10-lead MSOP (RM-10) package with exposed pad for thermal enhancement and optimized layout for high CMRR performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8251ARZ and LTC6915IG#PBF, the AD8253ARMZ-R7 uniquely combines G=1000 capability, ±15 V operation, and guaranteed 100 dB CMRR to 20 kHz-making it the only option among the three qualified for high-fidelity, wide-dynamic-range industrial DAQ systems.

Availability

AD8253ARMZ-R7 is available at Aetrix Electronics and suitable for high-speed data acquisition, biomedical analysis, and automated test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD8253ARMZ-R7 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 AD8253ARMZ-R7 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for high-accuracy, high-bandwidth sensor signal conditioning in demanding industrial, medical, and test & measurement applications.

FAQ

What gain settings does the AD8253ARMZ-R7 support, and how are they selected?

The AD8253ARMZ-R7 supports four discrete, factory-trimmed gain settings: 1, 10, 100, and 1000. Gain is selected via two digital inputs (A0 and A1) using either transparent mode (WR tied to −VS) or latched mode (WR edge-triggered). In transparent mode, gain changes immediately with A0/A1 logic levels; in latched mode, gain updates on the falling edge of WR. Both methods are fully supported in the AD8253ARMZ-R7 datasheet and require no external components.

Does the AD8253ARMZ-R7 require external resistors for gain setting?

No, the AD8253ARMZ-R7 does not require external resistors for gain setting. All gain configurations are implemented using internal laser-trimmed precision resistor arrays fabricated on the iCMOS® process. This eliminates external component count, layout sensitivity, and matching errors-ensuring guaranteed gain accuracy (<0.04% max error) and drift performance across temperature for the AD8253ARMZ-R7.

What is the maximum operating temperature range for the AD8253ARMZ-R7?

The AD8253ARMZ-R7 is specified for full performance over the industrial temperature range of −40°C to +85°C. Electrical parameters-including CMRR, offset drift, gain drift, and bandwidth-are guaranteed across this range. The device's junction temperature must not exceed 140°C, and thermal design should account for θJA = 112°C/W on a 4-layer JEDEC board to ensure reliable operation of the AD8253ARMZ-R7 in enclosed or high-ambient environments.

Can the AD8253ARMZ-R7 drive an ADC directly, and what load conditions apply?

Yes, the AD8253ARMZ-R7 can drive SAR and sigma-delta ADCs directly. Its output delivers ±13.6 V swing into 2 kΩ loads and maintains 780 ns settling to 0.001% at G=1-sufficient for 1 MSPS+ sampling. For optimal performance, use a 0.1 µF ceramic capacitor at the output to reduce charge kickback. The AD8253ARMZ-R7 output stage is short-circuit protected to 37 mA and remains stable with capacitive loads up to 100 pF without external isolation resistors.

How does the AD8253ARMZ-R7 handle power supply rejection, especially at high frequencies?

The AD8253ARMZ-R7 achieves >100 dB PSRR from DC to 1 kHz and maintains >60 dB PSRR up to 1 MHz (positive rail) and >70 dB up to 100 kHz (negative rail), as verified in Figures 16 and 17 of its datasheet. This high-frequency PSRR is enabled by the iCMOS® process and balanced internal architecture. To preserve this performance, separate analog and digital ground planes and tight local bypassing (0.1 µF + 10 µF per supply pin) are mandatory-critical for noise-sensitive applications using the AD8253ARMZ-R7.