CBM8656AMS8 from Corebai Microelectronics, 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	Amplifier A output, rail-to-rail swing, output current ±220 mA at VS=5V and stable with capacitive loads up to 500 pF.
2	-IN A	input	Amplifier A inverting input, rail-to-rail with input voltage range 0 V to VS and input bias current of 1 pA typ.
3	+IN A	input	Amplifier A non-inverting input, rail-to-rail with input voltage range 0 V to VS and input bias current of 1 pA typ.
4	V-	power_in	Negative supply (ground in single-supply use); inputs should not go more than 0.3 V below it.
5	+IN B	input	Amplifier B non-inverting input, rail-to-rail with input voltage range 0 V to VS and input bias current of 1 pA typ.
6	-IN B	input	Amplifier B inverting input, rail-to-rail with input voltage range 0 V to VS and input bias current of 1 pA typ.
7	OUT B	output	Amplifier B output, rail-to-rail swing, output current ±220 mA at VS=5V and stable with capacitive loads up to 500 pF.
8	V+	power_in	Positive supply for 2.7 V to 5.5 V operation (absolute maximum 6 V), bypassed with 0.1 µF close to the pin.

Key specifications

Parameter	Value
Manufacturer	Corebai Microelectronics
Package	MSOP-8
Category	Amplifiers
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		50	250	µV	VS=5.0V, VCM=0V to 5V	3
Offset Voltage (temp)	VOS			550	µV	VS=5.0V, -40°C≤TA≤+125°C	3
Offset Voltage Drift	ΔVOS/ΔT		0.4	2.3	µV/℃	VS=5.0V, -40°C≤TA≤+125°C	3
Input Bias Current	IB		1	10	pA	VS=5.0V	3
Input Bias Current (temp)	IB			500	pA	VS=5.0V, -40°C≤TA≤+125°C	3
Input Offset Current	IOS			10	pA	VS=5.0V	3
Input Offset Current (temp)	IOS			500	pA	VS=5.0V, -40°C≤TA≤+125°C	3
Input Voltage Range		0		5	V	VS=5.0V	3
Common-Mode Rejection Ratio	CMRR	85	100		dB	VS=5.0V, VCM=0V to 5V	3
Large Signal Voltage Gain	AVO	100	110		dB	VS=5.0V, VO=0.2V to 4.8V, RL=10kΩ, VCM=0V	3
Large Signal Voltage Gain (temp)	AVO	95			dB	VS=5.0V, -40°C≤TA≤+125°C	3
Output Voltage High	VOH	4.97	4.991		V	VS=5.0V, IL=1mA; -40℃≤TA≤+125℃	3
Output Voltage Low	VOL		8	30	mV	VS=5.0V, IL=1mA; -40℃≤TA≤+125℃	3
Output Current	VOUT		220		mA	VS=5.0V, VOUT=±0.5V (printed ±220)	3
Power Supply Rejection Ratio	PSRR	88	105		dB	VS=2.7V to 5.0V	3
Supply Current/Amplifier	ISY		3.7	4.5	mA	VS=5.0V, VO=0V	3
Supply Current/Amplifier (temp)	ISY			5.3	mA	VS=5.0V, -40℃≤TA≤+125℃	3
Input Capacitance Differential	CIN		9.3		pF	Differential	3
Input Capacitance Common-Mode	CIN		16.7		pF	Common-Mode	3
Input Voltage Noise Density	en		4		nV/√Hz	VS=5.0V, f=1kHz	3
Input Voltage Noise Density	en		2.7		nV/√Hz	VS=5.0V, f=10kHz	3
Total Harmonic Distortion+Noise	THD+N		0.0007		%	G=1, RL=1kΩ, f=1kHz, VIN=2V p-p	3
Gain Bandwidth Product	GBP		28		MHz	VS=5.0V	4
Slew Rate	SR		11		V/µs	VS=5.0V, RL=10kΩ	4
Settling Time	ts		370		ns	To 0.1%, VIN=0V to 2V step, G=+1	4
Phase Margin			69		degrees	VS=5.0V, CL=0pF	4
Offset Voltage	VOS		44	250	µV	VS=2.7V, VCM=0V to 2.7V	5
Offset Voltage (temp)	VOS			550	µV	VS=2.7V, -40℃≤TA≤+125℃	5
Offset Voltage Drift	ΔVOS/ΔT		0.4	2	µV/℃	VS=2.7V, -40℃≤TA≤+125℃	5
Input Bias Current	IB		1	10	pA	VS=2.7V	5
Input Bias Current (temp)	IB			500	pA	VS=2.7V, -40℃≤TA≤+125℃	5
Input Offset Current	IOS			10	pA	VS=2.7V	5
Input Offset Current (temp)	IOS			500	pA	VS=2.7V, -40℃≤TA≤+125℃	5
Input Voltage Range		0		2.7	V	VS=2.7V	5
Common-Mode Rejection Ratio	CMRR	80	98		dB	VS=2.7V, VCM=0V to 2.7V	5
Large Signal Voltage Gain	AVO		98		dB	VS=2.7V, VO=0.2V to 2.5V, RL=10kΩ, VCM=0V	5
Large Signal Voltage Gain (temp)	AVO	90			dB	VS=2.7V, -40℃≤TA≤+125℃	5
Output Voltage High	VOH	2.67	2.688		V	VS=2.7V, IL=1mA; -40℃≤TA≤+125℃	5
Output Voltage Low	VOL		10	30	mV	VS=2.7V, IL=1mA; -40℃≤TA≤+125℃	5
Output Current	VOUT		75		mV	VS=2.7V, VOUT=±0.5V (printed ±75, unit printed mV)	5
Power Supply Rejection Ratio	PSRR	88	105		dB	VS=2.7V to 5.0V	5
Supply Current/Amplifier	ISY		3.7	4.5	mA	VS=2.7V, VO=0V	5
Supply Current/Amplifier (temp)	ISY			5.3	mA	VS=2.7V, -40℃≤TA≤+125℃	5
Gain Bandwidth Product	GBP		27		MHz	VS=2.7V	5
Slew Rate	SR		8.5		V/µs	VS=2.7V, RL=10kΩ	5
Phase Margin			54		degrees	VS=2.7V, CL=0pF	5
Supply Voltage				6	V		6
Differential Input Voltage		-6		6	V	±6 V	6
Electrostatic Discharge (HBM)				3	kV	HBM	6
Storage Temperature Range		-65		150	℃	R, RM Packages	6
Junction Temperature Range		-65		150	℃	R, RM Packages	6
Lead Temperature (Soldering)				260	℃	Soldering, 10 sec	6
Thermal Resistance Junction-to-Ambient	θJA		210		℃/W	8-Lead MSOP (RM)	6
Thermal Resistance Junction-to-Case	θJC		45		℃/W	8-Lead MSOP (RM)	6

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
housing	PC		Poor PC board layout, contaminants, and the board insulator material can create leakage	22

CAD (KiCad official)

Symbol: CBM8656AMS8
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)
3D model files: cbm8656ams8-etched.step / cbm8656ams8-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cbm8656ams8.step / cbm8656ams8.glb are the bare package body.

Provenance

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

Datasheet: Corebai Microelectronics datasheet (25 pp, sha256 29c3f6721613b5a4, retrieved 2026-10-30, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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

CBM8656AMS8

Verified CBM8656AMS8

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README