The LMC6482IMMX\/NOPB is a Texas Instruments dual CMOS rail-to-rail input\/output op amp with 20fA input bias current, 82dB CMRR, 1.5MHz GBW, and 3V-15V supply. Packaged in VSSOP-8, -40C to +85C.<\/p>\n
| \u6e20\u9053<\/td>\n | 2 (dual)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| GBW<\/td>\n | 1.5 MHz<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| SR<\/td>\n | 1.3 V\/us<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| Ib<\/td>\n | 20 fA typical<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| CMRR<\/td>\n | 82 dB<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| Supply<\/td>\n | 3 V to 15.5 V<\/td>\n<\/tr>\n<\/table>\n\u7279\u70b9<\/h2>\n\u5e94\u7528<\/h2>\nProduct Overview The LMC6482IMMX\/NOPB is a Texas Instruments dual CMOS rail-to-rail input\/output op amp with 20fA input bias current, 82dB CMRR, 1.5MHz GBW, and 3V-15V supply. Packaged in VSSOP-8, -40C to +85C. Key Specifications Channels 2 (dual) GBW 1.5 MHz SR 1.3 V\/us Ib 20 fA typical CMRR 82 dB Supply 3 V to 15.5 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[570],"chip_brand":[138],"class_list":["post-8921","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-lmc6482immx-nopb","chip_brand-ti"],"acf":{"brief_explanation":"Dual RRIO CMOS op amp, 20fA Ib, 1.5MHz, VSSOP-8","date_code":"","package_case":"8-Pin VSSOP (3.0 x 3.0 x 0.9 mm)","in_stock":3500,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lmc6482.pdf","price":"$0.574 @ 1ku","product_introduction":"The LMC6482IMMX\/NOPB is a Texas Instruments dual CMOS rail-to-rail input and output operational amplifier in an 8-pin VSSOP package. The 20fA typical input bias current is among the lowest available for any op amp, making the LMC6482 ideal for high-impedance sensor interfaces such as photodiode transimpedance amplifiers, pH electrodes, and piezoelectric sensors where input bias current causes DC offset errors. The rail-to-rail input common-mode range extends to both supply rails, enabling direct interfacing with signals at ground or V+ in single-supply systems. The rail-to-rail output swings within 20mV of the supply rails with 100kohm load and within 1V with 600ohm load, maximizing dynamic range in low-voltage battery-powered applications. The 82dB CMRR and PSRR provide excellent accuracy in the presence of common-mode and supply noise. The 1.5MHz GBW and 1.3V\/us slew rate support moderate-speed signal conditioning. The device is specified for 3V, 5V, and 15V operation, with performance guaranteed over the -40C to +85C temperature range. The LMC6482 is an improved replacement for the TLC272 and TLC277. The IMMX suffix indicates VSSOP-8 tape-and-reel, and NOPB indicates lead-free (Pb-free) finish.","working_principle":"The LMC6482 uses a CMOS input stage with back-gate connected PMOS input pairs that achieve rail-to-rail input common-mode range. At common-mode voltages near the negative rail, one PMOS pair is active; near the positive rail, a complementary NMOS pair takes over, with a smooth transition region in between. The 20fA input bias current results from the MOSFET gate leakage, which is orders of magnitude lower than bipolar input bias currents. The output stage uses a class-AB CMOS push-pull configuration that drives the output to within millivolts of both supply rails. The 1.5MHz gain-bandwidth product is set by the dominant pole compensation capacitor. The 1.3V\/us slew rate is determined by the available current to charge the compensation capacitor during large-signal transients. The 82dB CMRR is achieved through careful matching of the complementary input pairs and input-stage current sources. Each amplifier in the dual package operates independently with 150dB channel-to-channel isolation.","pin_description":"
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