An operational amplifier featuring precision, low noise, CMOS technology, and rail-to-rail input/output capability.
  • Released:2021-10-22 00:00:43
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The CBM8605/CBM8606 possesses extremely low input offset characteristics (VOS, IOS), low noise, and ultra-low input bias current, rendering them highly suitable for applications requiring precision circuits. This series of operational amplifiers boasts a gain bandwidth product as high as 10MHz, ensuring bandwidth requirements and low distortion characteristics are met for audio and other AC applications. Additionally, their ability to support rail-to-rail input/output significantly broadens the application scope of this amplifier series.

The CBM8605, CBM8606, and CBM8608 are single, dual, and quad rail-to-rail input and output,  single-supply amplifiers. They feature very low offset voltage, low input voltage and current noise, and gain bandwidth product characteristic of up to 8.7MHz.

The CBM8605, CBM8606, and CBM8608 are specified over the extended industrial temperature range (−40°C to +125°C). The CBM8605 single is available in 5-lead SOT-23 and 5-ball WLCSP packages. The CBM8606 dual is available in an 8-lead MSOP, an 8-ball WLSCP, and a narrow SOIC surface-mounted package. The CBM8608 quad is available in a 14-lead TSSOP package and a narrow 14-lead SOIC package. The 5-ball and 8-ball WLCSP offer the smallest available footprint for any surface-mounted operational amplifier. The WLCSP, SOT-23, MSOP, and TSSOP versions are available in tape-and-reel only. 

 CBM8605/CBM8606/CBM8608 Applications

Audio systems are ubiquitous in our daily lives. Presented below is a typical application schematic for the CBM8605/CBM8606 in audio design:


The CBM8605/8606/8608 amplifies audio signals received from external audio input interfaces, with their low noise and wide bandwidth characteristics ensuring high-fidelity input of analog audio signals into the CODEC chip for processing.

 CBM8605/CBM8606 Typical Features

Low Offset Voltage: 65uVmax)

Low input bias currents: 1 pA(max)

Low noise: 12 nV/√Hz

Wide bandwidth: 8.7 MHz

High open-loop gain: 1000 V/mV

Unity gain stable

Single-supply operation: 2.7 V to 5.5 V 




 CBM8605/8606 Product Highlights

With a maximum input offset voltage of 65 μV and a maximum bias current of 1 pA, this device is an ideal choice for precision instrumentation applications.

Its extremely low noise of 8 nV/√Hz and high gain (1800 V/mV) enable precise amplification of low-level signals with substantial gain.

A 10 MHz gain-bandwidth product and a 5 V/µs slew rate ensure excellent dynamic accuracy in high-speed data acquisition systems.

Boasting CMRR (Common-Mode Rejection Ratio) and PSRR (Power Supply Rejection Ratio) of 95 dB and 100 dB respectively, these attributes make it straightforward to achieve high-performance levels in circuit designs.

The chip functions reliably within a temperature range of -40°C to +125°C, providing inherent reliability that safeguards its use in various applications.


 CBM8605/8606 Typical Electrical Characteristics Diagram

CBM8605/8606/8608 Graphs of Several Key Parameter Characteristics as follows:image.png



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