CBM27A Low noise, high voltage，precision operational amplifier

CBM27 provides low-level signal, excellent low noise and high-precision amplification performance. The products are widely used in stable integrators, precision summation amplifiers, precision voltage threshold detectors, comparators and professional audio circuits, such as magnetic heads and microphone preamplifiers. Offset voltage as low as 26μV. Drift is 0.2μV /°C, so the device is an ideal choice for precision instrument applications.Low noise (en=3.5nv/√Hz at 10Hz), 1/f noise turning frequency (2.7hz) and high gain (1800V/MV) can accurately amplify the low-level signal with high gain.8MHz gain bandwidth product and 2.8 V/µs slew rate can achieve excellent dynamic accuracy in high-speed data acquisition system.Using the bias current elimination circuit, CBM27 can achieve a low input bias current of ± 10na. The output stage has good load driving ability.±10 V guaranteed swing (600 Ω load) and low output distortion make the CBM27 an excellent choice for professional audio applications. Power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR)both exceed 120dB. With these features and 0.2 μ V long term drift per month,the circuit design can easily reach the high performance level. The product provides more design flexibility in a wide range of temperature environments from - 40 ℃ to + 125 ℃ and all power supply modes supported by the product.

Parameters
Features
Applications

Channel:1
Offset Voltage :26 uV
Input Bias Current:10000 pA
Input Voltage Noise Density:3 nV/sqrt Hz
Supply: 8 V to 36 V
Gain-Bandwidth Product: 8 MHz
Slew Rate:2.8 V/μs
Common-Mode Rejection Ratio:130 dB

Supply operation: 8V (±4V)~36V (±18V)
Low noise: 90 nV p-p（0.1 Hz to 10 Hz）
High open-loop gain: 1800 V/mV
Low drift: 0.2 µV/°C
High speed: 2.8 V/µs slew rate, 8 MHz gain bandwidth
CMRR: 130 dB at VCM of ±11 V
Maximum noise spectral density
CBM27A . . . 3.9 nV/√Hz @ 1 kHz Max
CBM27G . . . 5.0 nV/√Hz @ 1 kHz Max
Low input offset voltage

CBM27A . . . 26 μV Max

CBM27G . . . 100 μV Max
Low input offset voltage drift

CBM27A . . . 0.2 μV/°C

CBM27G . . . 0.4 μV/°C

High precision data acquisition system
Automated test equipment (ATE)
Audio preamplifier
Instruments
Power acquisition application system

Type	Title	File Size	Date	Download
Product manual	CBM27A_CBM27G	1809KB	2024-11-29	Download
Selection Guide	Corebai Selection Guide Rev.En2023.pdf	7.73M	2024-01-24	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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Product number	Rating	Inventory(pcs)	Price	Package	MSL	RoHS	MPQ	Operating Temperature Range (℃)	Order
CBM27AS8	Industrial grade	12500	10~99 \| $ 3.86  100~999$3.72 1000~2499$3.30 2500+$3.16	SOP-8	MSL 3	RoHS	Tape and Reel, 2500	-40 to 125	- + Requested quantity exceeds in stock amount Add to cart