CBM24AD92-Corebai Microelectronics (Beijing) Co., Ltd

CBM24AD92-2CQ is a 2-channel, low-noise, 24-bit synchronous sampling delta-sigma analog-to-digital converter (ADC). The device integrates a programmable gain amplifier (PGA), internal reference, and clock oscillator. CBM24AD92-2CQ provides the features required for extracranial EEG and ECG applications. With high integration and superior performance, CBM24AD92-2CQ enables users to build wearable brain-computer interface systems in a much smaller form factor. CBM24AD92-2CQ is equipped with a flexible input multiplexer for each channel. The multiplexer can be independently connected to internally generated signals to perform test, temperature, and lead-off detection. In addition, the body bias output signal can be generated from any configuration of the input channels. Optional SRB1/2 pins are also available to serve as the opposite input for single-ended (P/N) sampling. Channel 1 can be configured for respiration detection mode if required. CBM24AD92-2CQ operates at data rates from 250 SPS to 16 kSPS. Lead-off detection is implemented internally via excitation current sources. Multiple CBM24AD92-2CQ devices can be connected in a daisy-chain configuration in systems with a large number of channels. CBM24AD92-2CQ is offered in a QFN32 (5 mm × 5 mm) package.

Parameters
Features
Applications

Input-referred noise: 1.2 uVpp (at 70 Hz bandwidth)
Input bias current: 300 pA
Data rate: 250 ~ 16000 samples per second (SPS)
Common-mode rejection ratio (CMRR): -120 dB
Programmable gain: 1, 2, 4, 6, 8, 12, or 24
Unipolar or bipolar supply:  Analog: 4.75 V to 5.25 V  Digital: 1.8 V to 3.6 V
SPI interface
Operating temperature range: -40°C ~ +85°C

Two low-noise programmable gain amplifiers (PGA) and two high resolution synchronous sampling analog-to-digital converters (ADC)
Input-referred noise: 1.2 uVpp (at 70 Hz bandwidth)
Input bias current: 300 pA
Data rate: 250 ~ 16000 samples per second (SPS)
Common-mode rejection ratio (CMRR): -120 dB
Programmable gain: 1, 2, 4, 6, 8, 12, or 24
Unipolar or bipolar supply:  Analog: 4.75 V to 5.25 V  Digital: 1.8 V to 3.6 V
Integrated functions for human bio-signal measurement:  Human bias amplifier  Lead-off detection  Internal test signal
Optional internal oscillator
Optional internal reference
Flexible power-down and standby modes
SPI interface
Operating temperature range: -40°C ~ +85°C

Medical devices for human bioelectric signal measurement:
Electroencephalogram (EEG) research
Fetal electrocardiogram (ECG) monitoring
Sleep study monitoring
Bispectral Index (BIS)
Evoked Audio Potentials (EAP)

Type	Title	File Size	Date	Download
Download Center	CBM24AD92-2CQ		2026-02-11	Download

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ANALOG-ENGINEER-CALC — 模拟工程师计算器

模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算的列表（从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件）。除了可用作单独的工具之外，该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。

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计算工具

ANALOG-ENGINEER-CALC — 模拟工程师计算器

模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算的列表（从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件）。除了可用作单独的工具之外，该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。

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Product number	Rating	Inventory(pcs)	Price	Package	MSL	RoHS	MPQ	Temp Range (℃)	Order
CBM24AD92-2CQ	Industrial-grade	0	$ 0.00 	VQFN-32	MSL 3	RoHS	Tray, 490	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart
CBM24AD92-2CQP	Industrial-grade	0	$ 0.00 	TQFP-32	MSL 3	RoHS	Tray, 490	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart