component
AD8422ARZ
Public Made by Adomby adom
Analog Devices Instrumentation Amplifiers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownAD8422ARZ
Analog Devices · Instrumentation Amplifiers · SOIC-8
AD8422ARZ from Analog Devices, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | -IN | input | Negative differential input; absolute maximum voltage on -IN or +IN is -VS + 40 V, and the minimum is +VS - 40 V, so external protection is needed beyond those limits. |
| 2 | RG | passive | Gain-setting pin; a resistor between RG pins sets the gain as G = 1 + (19.8 kΩ/RG), and gain defaults to G = 1 with no resistor. |
| 3 | RG | passive | Gain-setting pin; a resistor between RG pins sets the gain as G = 1 + (19.8 kΩ/RG), and gain defaults to G = 1 with no resistor. |
| 4 | +IN | input | Positive differential input; absolute maximum voltage on -IN or +IN is -VS + 40 V, and the minimum is +VS - 40 V, so external protection is needed beyond those limits. |
| 5 | -VS | power_in | Negative power supply pin; supports dual supplies of ±1.8 V to ±18 V or single supply of 3.6 V to 36 V. |
| 6 | REF | input | Reference pin that sets the output level shift; drive it from a low-impedance voltage source, keep its voltage within 0.3 V of +VS or -VS, and keep source impedance below 1 Ω for best performance. |
| 7 | VOUT | output | Output pin; the output voltage is referenced to the voltage on the REF pin. |
| 8 | +VS | power_in | Positive power supply pin; supports dual supplies of ±1.8 V to ±18 V or single supply of 3.6 V to 36 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| CMRR, DC to 60 Hz, G = 1 | CMRR | 86 | dB | DC to 60 Hz, 1 kΩ unbalanced source, VCM = −10 V to +10 V, G = 1 | 3 | ||
| CMRR, DC to 60 Hz, G = 10 | CMRR | 106 | dB | DC to 60 Hz, 1 kΩ unbalanced source, VCM = −10 V to +10 V, G = 10 | 3 | ||
| CMRR, DC to 60 Hz, G = 100 | CMRR | 126 | dB | DC to 60 Hz, 1 kΩ unbalanced source, VCM = −10 V to +10 V, G = 100 | 3 | ||
| CMRR, DC to 60 Hz, G = 1000 | CMRR | 146 | dB | DC to 60 Hz, 1 kΩ unbalanced source, VCM = −10 V to +10 V, G = 1000 | 3 | ||
| CMRR, full temperature range, G = 1 | CMRR | 83 | dB | T = −40°C to +85°C, G = 1 | 3 | ||
| CMRR at 7 kHz, G = 1 | CMRR | 80 | dB | VCM = −10 V to +10 V, G = 1 | 3 | ||
| CMRR at 7 kHz, G = 10 | CMRR | 90 | dB | VCM = −10 V to +10 V, G = 10 | 3 | ||
| CMRR at 7 kHz, G = 100 | CMRR | 100 | dB | VCM = −10 V to +10 V, G = 100 | 3 | ||
| CMRR at 7 kHz, G = 1000 | CMRR | 100 | dB | VCM = −10 V to +10 V, G = 1000 | 3 | ||
| Input voltage noise density | eNI | 8 | nV/√Hz | 1 kHz, VIN+, VIN− , VREF = 0 V | 3 | ||
| Current noise density | 90 | 110 | fA/√Hz | f = 1 kHz | 3 | ||
| InputIIN current, per input | IIN | 35 | 50 | µA | VIN+, VIN−, VREF = 0 V | 4 | |
| Input offset voltage, RTI | VOSI | 60 | µV | VS = ±1.8 V to ±15 V | 3 | ||
| Input offset voltage, full temperature range | VOSI | 70 | µV | T = −40°C to +85°C | 3 | ||
| Input offset voltage average temperature coefficient | VOSI | 0.4 | µV/°C | Average temperature coefficient | 3 | ||
| Output offset voltage | VOSO | 300 | µV | VS = ±1.8 V to ±15 V | 3 | ||
| Output offset voltage, full temperature range | VOSO | 500 | µV | T = −40°C to +85°C | 3 | ||
| Output offset voltage average temperature coefficient | VOSO | 5 | µV/°C | Average temperature coefficient | 3 | ||
| PSR referred to input, G = 1 | 90 | 110 | dB | VS = ±1.8 V to ±18 V, G = 1 | 3 | ||
| PSR referred to input, G = 10 | 110 | 130 | dB | VS = ±1.8 V to ±18 V, G = 10 | 3 | ||
| PSR referred to input, G = 100 | 124 | 150 | dB | VS = ±1.8 V to ±18 V, G = 100 | 3 | ||
| PSR referred to input, G = 1000 | 130 | 150 | dB | VS = ±1.8 V to ±18 V, G = 1000 | 3 | ||
| Input bias current | 0.5 | 1 | nA | VS = ±1.8 V to ±15 V | 3 | ||
| Input bias current, full temperature range | 2 | nA | T = −40°C to +85°C | 3 | |||
| Input offset current | 0.2 | 0.3 | nA | VS = ±1.8 V to ±15 V | 3 | ||
| Input offset current, full temperature range | 0.8 | nA | T = −40°C to +85°C | 3 | |||
| Gain range | G | 1 | 1000 | V/V | G = 1 + (19.8 kΩ/RG) | 4 | |
| Gain error, G = 1 | 0.03 | % | VOUT ± 10 V, G = 1 | 4 | |||
| Gain error, G = 10 | 0.2 | % | VOUT ± 10 V, G = 10 | 4 | |||
| Gain error, G = 100 | 0.2 | % | VOUT ± 10 V, G = 100 | 4 | |||
| Gain error, G = 1000 | 0.2 | % | VOUT ± 10 V, G = 1000 | 4 | |||
| Gain nonlinearity, G = 1 | 0.5 | 5 | ppm | VOUT = −10 V to +10 V, RL = 2 kΩ, G = 1 | 4 | ||
| Gain nonlinearity, G = 10 | 2 | 5 | ppm | VOUT = −10 V to +10 V, RL = 2 kΩ, G = 10 | 4 | ||
| Gain nonlinearity, G = 100 | 4 | 10 | ppm | VOUT = −10 V to +10 V, RL = 2 kΩ, G = 100 | 4 | ||
| Gain nonlinearity, G = 1000 | 10 | 20 | ppm | VOUT = −10 V to +10 V, RL = 2 kΩ, G = 1000 | 4 | ||
| Gain vs temperature, G = 1 | 5 | ppm/°C | G = 1 | 4 | |||
| Supply voltage, dual supply operating range | VS | 1.8 | 18 | V | Dual supply, ±VS | 5 | |
| Supply voltage, single supply operating range | VS | 3.6 | 36 | V | Single supply | 5 | |
| Quiescent supply current | 300 | 330 | µA | G = 1, no load | 5 | ||
| Quiescent supply current, full temperature range | 400 | µA | T = −40°C to +85°C | 5 | |||
| Rated performance temperature range | -40 | 85 | °C | Rated performance | 5 | ||
| Operating temperature range | -40 | 125 | °C | Operating range (see typical performance for 85°C to 125°C) | 5 | ||
| Supply voltage | 1.8 | 18 | V | Dual supply ±1.8 V to ±18 V | 8 | ||
| Voltage on −IN or +IN | 40 | V | Maximum voltage, −VS + 40 V | 8 | |||
| REF pin voltage | 0.3 | V | Relative to ±VS ± 0.3 V | 8 | |||
| Storage temperature range | -65 | 150 | °C | Storage | 8 | ||
| Operating temperature range (absolute maximum) | -40 | 125 | °C | Operating | 8 | ||
| Maximum junction temperature | 150 | °C | Maximum junction | 8 | |||
| ESD Human Body Model | 3 | kV | HBM | 8 | |||
| ESD Charged Device Model | 1.25 | kV | CDM | 8 | |||
| ESD Machine Model | 100 | V | MM | 8 | |||
| Thermal resistance, junction-to-ambient, 8-lead SOIC | θJA | 100 | °C/W | 4-layer JEDEC PCB, in air | 8 | ||
| Reference input resistance | RIN | 20 | kΩ | 4 | |||
| Slew rate | 0.8 | V/µs | G = 1 to 100 | 4 | |||
| Small-signal −3 dB bandwidth, G = 1 | 2200 | kHz | G = 1 | 4 | |||
| Output voltage noise density | eNO | 80 | nV/√Hz | 3 | |||
| Voltage noise, 0.1 Hz to 10 Hz, referred to input, G = 1 | 2 | µV p-p | G = 1 | 3 | |||
| 0.01% settling time, 10 V step, G = 1000 | 80 | µs | 10 V step, G = 1000 | 4 | |||
| Short-circuit current | 20 | mA | 4 |
CAD (KiCad official)
- Symbol:
AD8422ARZ - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ad8422arz-etched.step/ad8422arz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ad8422arz.step/ad8422arz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (24 pp, sha256
2fdd0df3e17faa1e, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).