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AD8421TRMZ-EP

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Analog Devices Instrumentation OpAmps, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AD8421TRMZ-EP

Analog Devices · Instrumentation OpAmps · MSOP-8

AD8421TRMZ-EP from Analog Devices, in a MSOP-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 input terminal, protected to 40 V from the opposite supply.
2 RG passive Gain-setting terminal; a single resistor across the RG pins sets G = 1 + (9.9 kΩ/RG).
3 RG passive Gain-setting terminal; a single resistor across the RG pins sets G = 1 + (9.9 kΩ/RG).
4 +IN input Positive input terminal, protected to 40 V from the opposite supply.
5 -VS power_in Negative power supply terminal; operating range is ±2.5 V to ±18 V dual supply or 5 V to 36 V single supply.
6 REF input Reference voltage terminal; drive with a low impedance voltage source to level shift the output.
7 VOUT output Output terminal; output swing at RL = 2 kΩ is −VS + 1.2 V to +VS − 1.7 V.
8 +VS power_in Positive power supply terminal; operating range is ±2.5 V to ±18 V dual supply or 5 V to 36 V single supply.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package MSOP-8
Category Operational Amplifier/Comparator
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
Common-mode rejection ratio G=1 CMRR 84 dB DC to 60 Hz, 1 kΩ source imbalance, VCM = −10 V to +10 V, G = 1 3
Common-mode rejection ratio G=10 CMRR 104 dB DC to 60 Hz, 1 kΩ source imbalance, VCM = −10 V to +10 V, G = 10 3
Common-mode rejection ratio G=100 CMRR 124 dB DC to 60 Hz, 1 kΩ source imbalance, VCM = −10 V to +10 V, G = 100 3
Common-mode rejection ratio G=1000 CMRR 134 dB DC to 60 Hz, 1 kΩ source imbalance, VCM = −10 V to +10 V, G = 1000 3
Common-mode rejection ratio over temperature G=1 CMRR 80 dB TA = −55°C to +125°C, G = 1 3
Common-mode rejection ratio at 20 kHz G=1 CMRR 80 dB 20 kHz, VCM = −10 V to +10 V, G = 1 3
Common-mode rejection ratio at 20 kHz G=10 CMRR 90 dB 20 kHz, VCM = −10 V to +10 V, G = 10 3
Common-mode rejection ratio at 20 kHz G=100 CMRR 100 dB 20 kHz, VCM = −10 V to +10 V, G = 100 3
Common-mode rejection ratio at 20 kHz G=1000 CMRR 100 dB 20 kHz, VCM = −10 V to +10 V, G = 1000 3
Input voltage noise density eni 3 3.2 nV/√Hz f = 1 kHz, VIN+, VIN− = 0 V 3
Input bias current IB 1 2 nA 3
Input bias current over temperature IB 8 nA TA = −55°C to +125°C 3
Input offset current IOS 0.5 2 nA 3
Input offset current over temperature IOS 3 nA TA = −55°C to +125°C 3
Input offset voltage drift VOSI 0.9 0.9 µV/°C Average TC 3
Input offset voltage VOSI 70 µV VS = ±5 V to ±15 V 3
Input offset voltage over temperature VOSI 160 µV TA = −55°C to +125°C 3
Output offset voltage VOSO 600 µV 3
Output offset voltage over temperature VOSO 1.5 mV TA = −55°C to +125°C 3
Output offset voltage average temperature coefficient VOSO 9 µV/°C Average TC 3
Gain vs. temperature G=1 5 ppm/°C G = 1 4
Gain vs. temperature G>1 -80 ppm/°C G > 1 4
Gain range G 1 10000 V/V G = 1 + (9.9 kΩ/RG) 4
Small signal bandwidth G=1 10 MHz −3 dB, G = 1 4
Small signal bandwidth G=100 2 MHz −3 dB, G = 100 4
Slew rate SR 35 V/µs G = 1 to 100 4
Gain error G=1 0.05 % VOUT = ±10 V, G = 1 4
Gain error G=10 to 1000 0.3 % VOUT = ±10 V, G = 10 to 1000 4
Gain nonlinearity G=10 to 1000 30 50 ppm VOUT = −10 V to +10 V, RL ≥ 600 Ω, G = 10 to 1000 4
Gain nonlinearity at VOUT −5 V to +5 V 5 10 ppm VOUT = −5 V to +5 V 4
Gain nonlinearity G=1 RL=600 Ω 1 3 ppm VOUT = −10 V to +10 V, RL = 600 Ω, G = 1 4
Gain nonlinearity G=1 RL≥2 kΩ 1 ppm VOUT = −10 V to +10 V, RL ≥ 2 kΩ, G = 1 4
Reference gain to output -0.0001 1 0.0001 V/V 4
Reference input resistance RIN 20 kΩ 4
Reference input current IIN 20 24 µA VIN+, VIN− = 0 V 4
Short-circuit current 65 mA 4
Supply voltage range dual supply VS 2.5 18 V Dual supply 5
Supply voltage range single supply VS 5 36 V Single supply 5
Quiescent current IQ 2 2.3 mA 5
Quiescent current over temperature IQ 2.8 mA TA = −55°C to +125°C 5
Specified temperature range TA -55 125 °C For specified performance 5
Supply voltage VS -18 18 V Supply voltage ±18 V 6
Electrostatic discharge human body model 2 kV Human body model 6
Electrostatic discharge charged device model 1.25 kV Charged device model 6
Electrostatic discharge machine model 0.2 kV Machine model 6
Storage temperature range TSTG -65 150 °C 6
Operating temperature range TA -55 125 °C 6
Maximum junction temperature TJ 150 °C 6
Thermal resistance junction to ambient θJA 138.6 °C/W 8-lead MSOP, free air, 4-layer JEDEC PCB 6

CAD (KiCad official)

  • Symbol: AD8421TRMZ-EP
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: ad8421trmz-ep-etched.step / ad8421trmz-ep-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad8421trmz-ep.step / ad8421trmz-ep.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Analog Devices datasheet (20 pp, sha256 6b44ff79c7869697, retrieved 2026-10-28, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF