CBM12AD01 Highly integrated ASIC for weak signal acquisition-Corebai Microelectronics (Beijing) Co., Ltd

The CBM12AD0X series is a highly integrated ASIC for weak signal acquisition, corely breaking through the "impossible triangle" dilemma of traditional discrete component solutions—balancing high performance, low power consumption, and design simplicity. Leveraging the proprietary CBM ADC™ technology, it enables the shortest path and purest signal chain from sensor to digital domain without requiring an additional PGA (Programmable Gain Amplifier). The single-chip integrated design simplifies the complex analog front-end (AFE) to a user-friendly digital interface. It not only delivers a single-chip solution for femtoampere (fA)-level signal processing at the pyroelectric detector front-end but also offers customers three core advantages: high performance, low power consumption, and cost-effectiveness, facilitating shorter R&D cycles and accelerated product time-to-market.

Parameters
Features
Applications

Supply Voltage(V): 2.2V to 3.6V
Target Detector: Pyroelectric
Input Impedance: 10GΩ to 1.28TΩ
SNR(dB): 84
Operating Current(μA)(@500sps): -40
Input Range (mV)(Differential): ±82
Sampling Rate: 125sps to 8ksps
温度范围(°C): -40 to 85

CBM ADC™ Micro-Signal Direct Conversion Technology: Eliminates the need for complex multi-stage amplification chains, enabling direct digitization of micro-signals
High-Precision Analog-to-Digital Converter (ADC)
Output LSB as low as 2.5μV
Controllable Input Impedance: 10GΩ~1TΩ
Full-Scale Range (FSR): 82mV
Flexible Sampling Rate Control
-- High-Performance Mode: 125Hz~1kHz

-- High-Speed Mode: Up to 8kHz
Signal-to-Noise Ratio (SNR): Up to 84dB
Common-Mode Rejection Ratio (CMRR): >90dB
Equivalent Differential Input Capacitance:<1.5pf
Dual-Channel Continuous Operating Current: Only 40μA @ 500sps
I2C Communication Interface for Configuration and Signal Reading
SDA Pin Multiplexable as Interrupt Output
Conversion Complete Interrupt and Conditional Interrupt, Reducing MCU Duty Cycle
Single-Wire Transmission Interface DOCI (Data Out Clock In)
Built-in Multiple Digital Filters
-- Programmable Low-Pass Filter

-- Programmable High-Pass Filter
Ultra-Small DFN-8 (2mm * 2mm) Package
Die Form Available
Wide Operating Voltage Range: 2.2V~3.6V

Pyroelectric Gas Detector
Pyroelectric Flame Detector
Instruments, sensors, and other devices that require detection of microvolt-to-millivolt (μV~mV) level weak signals and demand gigaohm-to-teraohm (GΩ~TΩ) level high input impedance
Low-Side Current Sensing

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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	Operating Temperature Range (℃)	Order
CBM12AD01-DIE	Industrial Grade	1000	$ 0.00 	Die	MSL3	RoHS	--	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart
CBM12AD01D	Industrial Grade	1000	$ 0.00 	DFN-8	MSL3	RoHS	--	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart
CBM12AD01B	Industrial Grade	1000	$ 0.00 	DFN-8	MSL3	RoHS	--	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart