{"id":1740,"date":"2026-05-12T01:56:18","date_gmt":"2026-05-12T01:56:18","guid":{"rendered":"https:\/\/materialparts.com\/?p=1740"},"modified":"2026-05-12T03:06:03","modified_gmt":"2026-05-12T03:06:03","slug":"cbm8656ams8","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/cbm8656ams8\/","title":{"rendered":"CBM8656AMS8"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":1757,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[],"chip_brand":[156],"class_list":["post-1740","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","chip_brand-corebai"],"acf":{"brief_explanation":"Dual-channel precision low-noise CMOS operational amplifier in MSOP-8 package, featuring 2.7nV\/\u221aHz noise and rail-to-rail I\/O.","date_code":"","package_case":"MSOP-8","in_stock":2394,"datasheet":"https:\/\/corebai.com\/Data\/corebai\/upload\/file\/20240719\/01-07-08-CBM8655_CBM8656%E7%B2%BE%E5%AF%86%E8%BF%90%E7%AE%97%E6%94%BE%E5%A4%A7%E5%99%A8%E3%80%90%E8%8B%B1%E6%96%87%E6%8E%92%E7%89%88%E3%80%91-2024-0719-1545.pdf","price":"$0.53 (1000+ pcs)","product_introduction":"The CBM8656AMS8 is a dual-channel, low-noise, high-precision CMOS operational amplifier in MSOP-8 package, manufactured by Corebai Microelectronics. It features 2.7nV\/\u221aHz voltage noise density at 10kHz, rail-to-rail input and output, 28MHz gain-bandwidth product, and 50\u00b5V typical offset voltage. Operating from a single 2.7V to 5.5V supply over \u221240\u00b0C to +125\u00b0C, it is qualified for automotive applications.","working_principle":"The CBM8656AMS8 utilizes DigiTrim technology to achieve high DC accuracy by trimming offset voltage after packaging, correcting assembly-induced mechanical stress offsets. Its true rail-to-rail input stage allows the common-mode voltage range to extend to both supply rails, enabling buffering of wide dynamic range signals in single-supply systems. The output stage swings rail-to-rail with \u00b1220mA output current capability. Internal protective circuitry provides input overvoltage protection and anti-phase reversal. The amplifier is unity gain stable with 69\u00b0 phase margin and 28MHz bandwidth, suitable for precision signal conditioning.","pin_description":"\n\n\n
Pin Number<\/th>Pin Name<\/th>Description<\/th><\/tr>\n<\/thead>\n
1<\/td>OUT A<\/td>Output of Channel A<\/td><\/tr>\n
2<\/td>\u2212IN A<\/td>Inverting Input of Channel A<\/td><\/tr>\n
3<\/td>+IN A<\/td>Non-Inverting Input of Channel A<\/td><\/tr>\n
4<\/td>V\u2212<\/td>Negative Supply Voltage<\/td><\/tr>\n
5<\/td>+IN B<\/td>Non-Inverting Input of Channel B<\/td><\/tr>\n
6<\/td>\u2212IN B<\/td>Inverting Input of Channel B<\/td><\/tr>\n
7<\/td>OUT B<\/td>Output of Channel B<\/td><\/tr>\n
8<\/td>V+<\/td>Positive Supply Voltage<\/td><\/tr>\n<\/tbody>\n<\/table>","application_scenarios":"\n\n\n
Application<\/th>Description<\/th><\/tr>\n<\/thead>\n
ADC\/DAC Buffers<\/td>Buffers high-resolution ADCs and DACs in single-supply systems with rail-to-rail input\/output swing<\/td><\/tr>\n
Audio Equipment<\/td>Microphone pre-amplifiers and mixing consoles leveraging low noise (2.7nV\/\u221aHz) and low THD+N (0.0007%)<\/td><\/tr>\n
Industrial Controls<\/td>Precision process control and instrumentation requiring high CMRR (100dB) and low offset drift<\/td><\/tr>\n
Precision Filters<\/td>Active filter designs requiring high speed (28MHz GBW) and low noise performance<\/td><\/tr>\n
Digital Scales<\/td>Weighing systems requiring low offset voltage (50\u00b5V) and high DC precision<\/td><\/tr>\n
Automotive Collision Avoidance<\/td>Signal conditioning in automotive safety systems qualified for \u221240\u00b0C to +125\u00b0C operation<\/td><\/tr>\n
PLL Filters<\/td>Phase-locked loop filter applications requiring precision and rail-to-rail capability<\/td><\/tr>\n
Sonar Detectors<\/td>Underwater signal amplification benefiting from low noise and high output current (\u00b1220mA)<\/td><\/tr>\n<\/tbody>\n<\/table>","alternative_models":"\n\n\n
Model<\/th>Manufacturer<\/th>Package<\/th>Key Difference<\/th><\/tr>\n<\/thead>\n
CBM8656AS8<\/td>Corebai<\/td>SOIC-8<\/td>Same die, SOIC-8 package<\/td><\/tr>\n
CBM8655AMS8<\/td>Corebai<\/td>MSOP-8<\/td>Single-channel version, same MSOP-8 package<\/td><\/tr>\n
CBM8655AS8<\/td>Corebai<\/td>SOIC-8<\/td>Single-channel version, SOIC-8 package<\/td><\/tr>\n
AD8656ARMZ<\/td>Analog Devices<\/td>MSOP-8<\/td>Pin-compatible industry reference<\/td><\/tr>\n
AD8656ARZ<\/td>Analog Devices<\/td>SOIC-8<\/td>Pin-compatible, SOIC-8 package<\/td><\/tr>\n<\/tbody>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/1740","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=1740"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/1740\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media\/1757"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=1740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=1740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=1740"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=1740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}