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CBM2904AS8

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Corebai Microelectronics Operational Amplifier, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CBM2904AS8

Corebai Microelectronics · Operational Amplifier · SOP-8

CBM2904AS8 from Corebai Microelectronics, in a SOP-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 OUT1 output Output of amplifier 1, swinging from 0V to VCC-1.5V.
2 IN1(-) input Inverting input of amplifier 1; input common-mode range -0.3V to 32V.
3 IN1(+) input Non-inverting input of amplifier 1; input common-mode range -0.3V to 32V.
4 GND power_in Ground (negative supply) pin, PIN 4 = GND; split supplies up to ±16V.
5 IN2(+) input Non-inverting input of amplifier 2; input common-mode range -0.3V to 32V.
6 IN2(-) input Inverting input of amplifier 2; input common-mode range -0.3V to 32V.
7 OUT2 output Output of amplifier 2, swinging from 0V to VCC-1.5V.
8 VCC power_in Positive supply, PIN 8 = VCC; 3V to 32V single supply (absolute maximum 32V).

Key specifications

Parameter Value
Manufacturer Corebai Microelectronics
Package SOP-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
Maximum Input Offset Voltage VIO 9 mV VO=1.4V VCC=5.0-30V; RS=0Ω VICM=0V to VCC-1.7V 4
Input Offset Voltage Drift △VIO/△T 7 μV/℃ RS=0Ω, VCC=30V 4
Maximum Input Offset Current IIO 150 nA VCC=5.0V 4
Input Offset Current Drift △IIO/△T 10 pA/℃ RS=0Ω, VCC=30V 4
Maximum Input Bias Current IIB 500 nA VCC=5.0V 4
Input Common Mode Voltage Range VICR 0 28 V VCC=30V 4
Maximum Power Supply Current ICC 0.3 3 mA RL=∞,VCC=30V,V0=0V 4
Maximum Power Supply Current ICC 0.3 1.2 mA RL=∞,VCC=5V,V0=0V 4
Minimum Large Signal Open-Loop Voltage Gain AVOL 15 V/mV VCC=15V, RL≥2KΩ 4
Minimum Output High-Level Voltage Swing VOH 26 V VCC=30V,RL=2KΩ 4
Minimum Output High-Level Voltage Swing VOH 27 V VCC=30V,RL=10KΩ 4
Maximum Output Low-Level Voltage Swing VOL 20 mV VCC=5V,RL=10KΩ 4
Common Mode Rejection CMR 65 dB VCC=30V, RS=10KΩ 4
Power Supply Rejection PSR 65 dB VCC=30V 4
Channel Separation CS -120 dB f=1KHz to 20KHz,VCC=30V 4
Minimum Source Output Current Isource 10 mA VIN+=1V, VIN-=0V, VCC=15V, V0=2V 4
Minimum Output Sink Current Isink 5 mA VIN+=0V, VIN-=1V, VCC=15V, V0=15V 4
Minimum Output Sink Current Isink 12 μA VIN+=0V, VIN-=1V, VCC=15V, V0=0.2V 4
DC Supply Voltage (single supply) VCC 5 30 V Single supply 2
DC Supply Voltage (split supplies) VCC -2.5 15 V Split supplies 2
Operating Temperature TA -40 105 ℃ All package types 2
Power Supply Voltage (single supply) VCC 32 V Single supply 2
Power Supply Voltage (split supplies) VCC -16 16 V Split supplies 2
Input Differential Voltage Range VIDR -32 32 V Note 1: split power supplies 2
Input Common Mode Voltage Range VICR -0.3 32 V 2
Input Current, per pin IIN 50 mA Note 2: VIN<-0.3V, per pin 2
Junction Temperature TJ 150 ℃ Plastic packages 2
Storage Temperature Tstg -55 125 ℃ Plastic packages 2
Lead Temperature TL 260 ℃ 1mm from case for 10 seconds 2

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 abs absolute-maximum-rated conditions for extended periods may affect device reliability. Functional operation should be restricted to the Recommended Operating Conditions. +Derating - Plastic DIP: - 10 m 2

CAD (KiCad official)

  • Symbol: CBM2904AS8
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: cbm2904as8-etched.step / cbm2904as8-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cbm2904as8.step / cbm2904as8.glb are the bare package body.

Provenance

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

  • Datasheet: Corebai Microelectronics datasheet (7 pp, sha256 abd2ca20d23e4bda, retrieved 2026-10-18, 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