AD8666ARMZ-REEL 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	OUT A	output	Channel A amplifier output, rail-to-rail.
2	-IN A	input	Channel A inverting input.
3	+IN A	input	Channel A non-inverting input.
4	V-	power_in	Negative supply (ground in single-supply operation); supply range 5 V to 16 V single or ±2.5 V to ±8 V dual, absolute maximum supply 18 V.
5	+IN B	input	Channel B non-inverting input.
6	-IN B	input	Channel B inverting input.
7	OUT B	output	Channel B amplifier output, rail-to-rail.
8	V+	power_in	Positive supply; supply range 5 V to 16 V single or ±2.5 V to ±8 V dual, absolute maximum supply 18 V.

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
Offset Voltage	VOS		0.7	2.5	mV	VDD=5.0V, VCM = 2.5 V	3
Offset Voltage	VOS			3	mV	VDD=5.0V, VCM = −0.1 V to +3.0 V	3
Offset Voltage	VOS			5	mV	VDD=5.0V, −40°C < TA < +125°C	3
Offset Voltage Drift	ΔVOS/ΔT		3	10	μV/°C	VDD=5.0V, −40°C < TA < +125°C	3
Input Bias Current	IB		0.2	1	pA	VDD=5.0V	3
Input Bias Current	IB			550	pA	VDD=5.0V, −40°C < TA < +125°C	3
Input Offset Current	IOS		0.1	0.5	pA	VDD=5.0V	3
Input Offset Current	IOS			70	pA	VDD=5.0V, −40°C < TA < +125°C	3
Input Voltage Range	VCM	-0.1		3	V	VDD=5.0V	3
Common-Mode Rejection Ratio	CMRR	84	100		dB	VDD=5.0V, VCM = −0.1 V to +3.0 V	3
Common-Mode Rejection Ratio	CMRR	79			dB	VDD=5.0V, −40°C < TA < +125°C	3
Large-Signal Voltage Gain	AVO	68	145		V/mV	VDD=5.0V, RL = 2 kΩ, VO = 0.5 V to 4.5 V	3
Output Voltage High	VOH	4.88	4.93		V	VDD=5.0V, IOUT = 1 mA	3
Output Voltage High	VOH	4.86			V	VDD=5.0V, −40°C < TA < +125°C	3
Output Voltage Low	VOL		50	85	mV	VDD=5.0V, IOUT = 1 mA	3
Output Voltage Low	VOL			105	mV	VDD=5.0V, −40°C < TA < +125°C	3
Power Supply Rejection Ratio	PSRR	98	115		dB	VDD=5.0V, VDD = 5.0 V to 16 V	3
Power Supply Rejection Ratio	PSRR	94			dB	VDD=5.0V, −40°C < TA < +125°C	3
Supply Current per Amplifier	ISY		1.1	1.4	mA	VDD=5.0V	3
Supply Current per Amplifier	ISY			2	mA	VDD=5.0V, −40°C < TA < +125°C	3
Offset Voltage	VOS		0.6	2.5	mV	VDD=16V, VCM = 8 V	4
Offset Voltage	VOS			3	mV	VDD=16V, VCM = −0.1 V to +14.0 V	4
Offset Voltage	VOS			5	mV	VDD=16V, −40°C < TA < +125°C	4
Offset Voltage Drift	ΔVOS/ΔT		3	10	μV/°C	VDD=16V, −40°C < TA < +125°C	4
Input Bias Current	IB		0.2	1	pA	VDD=16V	4
Input Bias Current	IB			550	pA	VDD=16V, −40°C < TA < +125°C	4
Input Offset Current	IOS		0.1	0.5	pA	VDD=16V	4
Input Offset Current	IOS			70	pA	VDD=16V, −40°C < TA < +125°C	4
Input Voltage Range	VCM	-0.1		14	V	VDD=16V	4
Common-Mode Rejection Ratio	CMRR	90	110		dB	VDD=16V, VCM = −0.1 V to +14.0 V	4
Common-Mode Rejection Ratio	CMRR	80			dB	VDD=16V, −40°C < TA < +125°C	4
Large-Signal Voltage Gain	AVO	130	255		V/mV	VDD=16V, RL = 2 kΩ, VO = 0.5 V to 15.5 V	4
Output Voltage High	VOH	15.94	15.96		V	VDD=16V, IOUT = 1 mA	4
Output Voltage High	VOH	15.9			V	VDD=16V, −40°C < TA < +125°C	4
Output Voltage Low	VOL		22	40	mV	VDD=16V, IOUT = 1 mA	4
Output Voltage Low	VOL			50	mV	VDD=16V, −40°C < TA < +125°C	4
Power Supply Rejection Ratio	PSRR	98	115		dB	VDD=16V, VDD = 5.0 V to 16 V	4
Power Supply Rejection Ratio	PSRR	94			dB	VDD=16V, −40°C < TA < +125°C	4
Supply Current per Amplifier	ISY		1.15	1.55	mA	VDD=16V	4
Supply Current per Amplifier	ISY			2	mA	VDD=16V, −40°C < TA < +125°C	4
Supply Voltage				18	V		5
Differential Input Voltage		-18		18	V	±18 V	5
Input Voltage		0			V	GND to VDD	5
Storage Temperature Range		-65		150	°C		5
Operating Temperature Range		-40		125	°C		5
Lead Temperature				300	°C	Soldering, 60 sec	5
Junction Temperature				150	°C		5
Thermal Resistance Junction to Ambient	θJA		210		°C/W	8-Lead MSOP (RM-8)	5
Thermal Resistance Junction to Case	θJC		45		°C/W	8-Lead MSOP (RM-8)	5

CAD (KiCad official)

Symbol: AD8666ARMZ-REEL
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)
3D model files: ad8666armz-reel-etched.step / ad8666armz-reel-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad8666armz-reel.step / ad8666armz-reel.glb are the bare package body.

Provenance

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

Datasheet: Analog Devices datasheet (16 pp, sha256 91f05062e7c1bdd6, retrieved 2026-10-31, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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

AD8666ARMZ-REEL

Verified AD8666ARMZ-REEL

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3D Model

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