FEATURES
 Upgraded Drop-in Replacement for AD8551
 Low Offset Voltage: 1μV (typ) 5μV (max)
 Input Offset Drift: 0.005μV/°C (max)
 High Gain Bandwidth Product: 4.5MHz
 Rail-to-Rail Input and Output
 High Gain, CMRR & PSRR: ≥130dB
 High Slew Rate: 2.7V/μs
 Low Noise: 0.75μVP-P (0.01~10Hz)
 Low Power Consumption: 640μA/op amp
 Overload Recovery Time: 1μs
 Low Supply Voltage: +2.7V to +5.5V
 No External Capacitors Required
 Extended Temperature: −40°C to +125°C

DESCRIPTION
This AT855x family includes single (AT8551) and dual
(AT8551) general-purpose CMOS operational
amplifiers that provides ultralow noise, offset and
power. The AT8551 use auto-zero techniques to
simultaneously provide very low offset voltage (5μV
max) and near-zero drift over time and temperature.
This miniature, high-precision operational amplifiers
offset high input impedance and rail-to-rail input and
rail-to-rail output swing. With high gain-bandwidth
product of 4.5MHz and slew rate of 2.7V/μs.
This op amp operates as low as +2.7V (±1.35) and up
to +5.5V (±2.75V). The AT8551 single amplifier is
available in 5-lead SOT23, 8-lead MSOP8 and 8-lead
SOIC packages, The AT8552 dual amplifier is available
in 8-lead SOIC and 8-lead MSOP8 narrow surface
mount packages. The AT8551/AT8552 (dual version)
are specified for the extended industrial and
automotive temperature range (−40°C to 125°C).