Analog Devices introduces new tiny difference OP Amps .The AD8276/AD8277 and AD8278 are designed for high precision applications like : voltage measurement and monitoring , current measurement and monitoring , differential output instrumentation amplifier ,portable battery-powered equipment , test and measurement applications . AD8276/AD8277 and AD8278 provide an exceptional common-mode rejection ratio (86 dB) and high bandwidth while amplifying signals well beyond the supply rails.
For excellent gain accuracy and high CMRR on chip resistors are laser-trimmed .
ESD circuitry and internal resistors also provide overvoltage protection to the op amps. The AD8276/AD8277 are unity-gain stable and are optimized for use as difference amplifiers. The AD8276/AD8277 can also be connected in high precision, single-ended configurations with G = −1, +1, +2.
The AD8278 can be used as a difference amplifier with G = ½ or G = 2. It can also be connected in a high precision, single-ended configuration for non-inverting and inverting gains of −½, −2, +3, +2, +1½, +1, or +½.
Main features of the AD8276/AD8277 , AD8278 op amps are : wide input range beyond supplies , rugged input overvoltage protection , low supply current: 200 μA , low power dissipation: 0.5 mW at VS = 2.5 V , bandwidth: 550 kHz , CMRR: 86 dB minimum , low offset voltage drift: ±2 μV/°C maximum (B Grade) , low gain drift: 1 ppm/°C maximum (B Grade) , wide power supply range: single supply: 2 V to 36 V dual supplies: ±2 V to ±18 V .