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CBM2903AS8

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

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Contents

README

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CBM2903AS8

Corebai Microelectronics · Comparators · SOP-8

CBM2903AS8 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 Comparator 1 output; sinks at least 6.0 mA at VCC=5.0V and is open-collector style with output leakage up to 1000 nA, so unused outputs must be left open.
2 IN1(-) input Comparator 1 inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC.
3 IN1(+) input Comparator 1 non-inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC.
4 GND power_in Ground, or negative supply when operated from split supplies.
5 IN2(+) input Comparator 2 non-inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC.
6 IN2(-) input Comparator 2 inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC.
7 OUT2 output Comparator 2 output; sinks at least 6.0 mA at VCC=5.0V and has output leakage up to 1000 nA, so it must be left open if unused.
8 VCC power_in Positive supply, 5.0 to 30 V single supply (±2.5 to ±15 V split) with an absolute maximum of 36 V.

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
Input Offset Voltage VIO 5 9 mV V0=1.4V, VCC=5.0-30V, RS≤100Ω, VICR=0V-(VCC-1.5)V; typ value marked * (@25℃) 3
Input Bias Current IIB 400 nA V0=1.4V, VCC=5.0-30V, VICR=0V-(VCC-1.5)V 3
Input Offset Current IIO -150 50 150 nA V0=1.4V, VCC=5.0-30V, VICR=0V-(VCC-1.5)V; typ marked * (@25℃) 3
Input Common Mode Voltage Range VICR 0 V VCC=5.0-30V; maximum printed as VCC-2.0V (not a fixed number) 3
Supply Current ICC 1 2.5 mA RL=∞, VCC=5.0V and RL=∞, VCC=30V; typ and max marked * (@25℃ for starred values) 3
Output Sink Current Isink 6 mA VI(-)=1.0V, VI(+)=0V, V0≤1.5V, VCC=5.0V; min marked * (@25℃) 3
Saturation Voltage Vsat 700 mV VI(-)=1.0V, VI(+)=0V, Isink≤4.0mA, VCC=5.0V 3
Output Leakage Current IOL 0.1 1000 nA VI(+)=1.0V, VI(-)=0V, V0=5.0V; V0=30V; typ marked * (@25℃) 3
Power Supply Voltages, Single Supply VCC 36 V Single supply 2
Power Supply Voltages, Split Supplies VCC -18 18 V Split supplies (printed ±18V) 2
Input Differential Voltage Range VIDR 36 V 2
Input Common Mode Voltage Range VICR -0.3 V Maximum printed as VCC; Note 1: split power supplies 2
Input Current, per pin IIN 50 mA Per pin; Note 2: VIN<-0.3V 2
Junction Temperature, Plastic Packages TJ 150 ℃ Plastic packages 2
Storage Temperature Tstg -65 150 ℃ 2
Lead Temperature TL 260 ℃ 1mm from case for 10 seconds 2
Power Dissipation, Plastic Package PD 570 mW TA=25℃, plastic package 2
Power Dissipation Derating PD 5.7 mW/℃ Derate above 25℃, plastic package 2
DC Supply Voltage VCC 2.5 30 V Printed as ±2.5 or 5.0 (min) and ±15 or 30 (max); Ta=-40~85℃ 2
Operating Temperature, All Package Types TA -40 85 ℃ All package types 2

CAD (KiCad official)

  • Symbol: CBM2903AS8
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: cbm2903as8-etched.step / cbm2903as8-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cbm2903as8.step / cbm2903as8.glb are the bare package body.

Provenance

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

  • Datasheet: Corebai Microelectronics datasheet (6 pp, sha256 7eccb850618fe502, retrieved 2026-10-19, 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