component
CBM2904AS8
Public Made by Adomby adom
Corebai Microelectronics Operational Amplifier, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownCBM2904AS8
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cbm2904as8.step/cbm2904as8.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).