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AD8421BRMZ-R7

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

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docs ad8421brmz-r7: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
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ad8421brmz-r7-etched.fit.json ad8421brmz-r7: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
ad8421brmz-r7-etched.glb ad8421brmz-r7: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
ad8421brmz-r7-etched.step ad8421brmz-r7: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
ad8421brmz-r7.glb Publish 0.1.0 · Ray 1mo ago
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package.json ad8421brmz-r7: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
page.json ad8421brmz-r7: specified limits as data (metadata.characteristics, 49 rows from the datasheet) · Ray 26d ago
README.md ad8421brmz-r7: specified limits as data (metadata.characteristics, 49 rows from the datasheet) · Ray 26d ago

AD8421BRMZ-R7

Analog Devices · Instrumentation Amplifiers · MSOP-8

AD8421BRMZ-R7 from Analog Devices, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 -IN input Negative differential input pin accepting signals from −VS + 2.3 V to +VS − 1.8 V.
2 RG passive Gain-setting resistor connection pin; place external resistor between pins 2 and 3 to set G = 1 + (9.9 kΩ/RG).
3 RG passive Gain-setting resistor connection pin; place external resistor between pins 2 and 3 to set G = 1 + (9.9 kΩ/RG).
4 +IN input Positive differential input pin accepting signals from −VS + 2.3 V to +VS − 1.8 V.
5 -VS power_in Negative power supply pin for ±2.5 V to ±18 V dual supply operation.
6 REF input Reference voltage input pin with 20 kΩ input impedance for output level shifting; voltage range −VS to +VS.
7 VOUT output Analog output pin with swing from −VS + 1.2 V to +VS − 1.6 V at load resistance RL = 2 kΩ.
8 +VS power_in Positive power supply pin for ±2.5 V to ±18 V dual supply operation.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package MSOP-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 (BRM) CMRR 92 dB DC至60 Hz的CMRR，1 kΩ非均衡信号源，VCM = −10 V至+10 V，G = 1 5
CMRR, DC to 60 Hz, G = 10 (BRM) CMRR 112 dB DC至60 Hz的CMRR，1 kΩ非均衡信号源，VCM = −10 V至+10 V，G = 10 5
CMRR, DC to 60 Hz, G = 100 (BRM) CMRR 132 dB DC至60 Hz的CMRR，1 kΩ非均衡信号源，VCM = −10 V至+10 V，G = 100 5
CMRR, DC to 60 Hz, G = 1000 (BRM) CMRR 140 dB DC至60 Hz的CMRR，1 kΩ非均衡信号源，VCM = −10 V至+10 V，G = 1000 5
CMRR over full temperature, G = 1 (BRM) CMRR 90 dB 全温度范围，G = 1，TA = −40°C至+85°C 5
CMRR at 20 kHz, G = 1 (BRM) CMRR 80 dB 20 kHz时的CMRR，VCM = −10 V至+10 V，G = 1 5
CMRR at 20 kHz, G = 10 (BRM) CMRR 90 dB 20 kHz时的CMRR，VCM = −10 V至+10 V，G = 10 5
CMRR at 20 kHz, G = 100 (BRM) CMRR 100 dB 20 kHz时的CMRR，VCM = −10 V至+10 V，G = 100 5
CMRR at 20 kHz, G = 1000 (BRM) CMRR 100 dB 20 kHz时的CMRR，VCM = −10 V至+10 V，G = 1000 5
Input voltage noise density (BRM) eni 3 3.2 nV/√Hz 1 kHz，VIN+, VIN− = 0 V 5
Peak-to-peak RTI voltage noise, G = 1 (BRM) 2 2.2 µV p-p f = 0.1 Hz至10 Hz，RTI，G = 1 5
Peak-to-peak RTI voltage noise, G = 100 to 1000 (BRM) 0.07 0.09 µV p-p f = 0.1 Hz至10 Hz，RTI，G = 100至1000 5
Input offset voltage, VOSI (BRM) VOSI 50 µV VS = ±5 V至±15 V 5
Input offset voltage over full temperature, VOSI (BRM) VOSI 135 µV 全温度范围 TA = −40°C至+85°C 5
Input offset voltage average temperature coefficient, VOSI (BRM) VOSI 0.9 µV/°C 5
Output offset voltage, VOSO (BRM) VOSO 400 µV 5
Output offset voltage over full temperature, VOSO (BRM) VOSO 1 mV 全温度范围 TA = −40°C至+85°C 5
Output offset voltage average temperature coefficient, VOSO (BRM) VOSO 9 µV/°C 5
PSR, G = 1 (BRM) 100 120 dB VS = ±2.5 V至±18 V，G = 1 6
PSR, G = 10 (BRM) 120 140 dB VS = ±2.5 V至±18 V，G = 10 6
PSR, G = 100 (BRM) 140 150 dB VS = ±2.5 V至±18 V，G = 100 6
PSR, G = 1000 (BRM) 140 150 dB VS = ±2.5 V至±18 V，G = 1000 6
Input bias current (BRM) 0.1 1 nA 6
Input bias current over full temperature (BRM) 6 nA 全温度范围 TA = −40°C至+85°C 6
Input offset current (BRM) 0.1 1 nA 6
Input offset current over full temperature (BRM) 1.5 nA 全温度范围 TA = −40°C至+85°C 6
Gain range 1 10000 V/V 6
Gain error, G = 1 (BRM) 0.02 % VOUT = ±10 V，G = 1 6
Gain error, G = 10 to 1000 (BRM) 0.2 % VOUT = ±10 V，G = 10至1000 6
Gain nonlinearity, G = 1, RL = 600 Ω (BRM) 1 3 ppm VOUT = −10 V至+10 V，G = 1，RL = 600 Ω 6
Gain nonlinearity, G = 10 to 1000 (BRM) 30 50 ppm VOUT = −10 V至+10 V，G = 10至1000，RL ≥ 600 Ω 6
Gain nonlinearity, VOUT = ±5 V (BRM) 5 10 ppm VOUT = −5 V至+5 V 6
Gain vs temperature, G = 1 (BRM) 0.1 1 ppm/°C G = 1 6
Input bias current reference pin, IIN (BRM) IIN 20 24 µA VIN+, VIN− = 0 V 7
Output reference gain (BRM) -0.0001 1 0.0001 V/V 7
Supply voltage, single supply 5 36 V 单电源 7
Supply voltage, dual supply 2.5 18 V 双电源 7
Quiescent (supply) current (BRM) 2 2.3 mA 7
Quiescent (supply) current over full temperature (BRM) 2.6 mA 全温度范围 TA = −40°C至+85°C 7
Rated performance temperature range -40 85 °C 额定性能 7
Operating temperature range -40 125 °C 7
Supply voltage (absolute maximum) -18 18 V 电源电压 ±18 V 8
Storage temperature range -65 150 °C 8
Operating temperature range (absolute maximum) -40 125 °C 8
Maximum junction temperature 150 °C 8
ESD human body model 2 kV 人体模型 8
ESD charged device model 1.25 kV 充电器件模型 8
ESD machine model 0.2 kV 机器放电模型 8
Thermal resistance, junction-to-ambient, 8-lead MSOP θJA 138.6 °C/W 4层JEDEC PCB，空气中 8

CAD (KiCad official)

  • Symbol: AD8421BRMZ-R7
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: ad8421brmz-r7-etched.step / ad8421brmz-r7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad8421brmz-r7.step / ad8421brmz-r7.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (28 pp, sha256 cee2fa8289e5925e, retrieved 2026-09-22, 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 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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