OPA728AIDRBT

电子微调20MHz ，高精度CMOS e-trim 20MHz, High Precision CMOS

DESCRIPON

The OPA727 and OPA728 series op amps use a state-of-the-art 12V analog CMOS process and

e-trim, a package-level trim, offering outstanding dc precision and ac performance. The extremely low offset 150µV max and drift 1.5µV/°C are achieved by trimming the IC digitally after packaging to avoid the shift in parameters as a result of stresses during package assembly. To correct for offset drift, the OPA727 and OPA728 family is trimmed over temperature. The devices feature very high CMRR and open-loop gain to minimize errors.

Excellent ac characteristics, such as 20MHz GBW, 30V/µs slew rate and 0.0003% THD+N make the

OPA727 and OPA728 well-suited for communication, high-end audio, and active filter applications. With a bias current of less than 500pA, they are well suited for use as transimpedance I/V-conversion amplifiers for monitoring optical power in ONET applications.

FEATURES

• OFFSET: 15µV typ, 150µV max

• DRIFT: 0.3µV/°C typ, 1.5µV/°C max

• BANDWIDTH: 20MHz

• SLEW RATE: 30V/µs

• BIAS CURRENT: 500pA max

• LOW NOISE: 6nV/√Hz at 100kHz

• THD+N: 0.0003% at 1kHz

• QUIESCENT CURRENT: 4.3mA/ch

• SUPPLY VOLTAGE: 4V to 12V

• SHUTDOWN MODE OPA728: 6µA

APPLICATIONS

• OPTICAL NETWORKING

• TRANSIMPEDANCE AMPLIFIERS

• INTEGRATORS

• ACTIVE FILTERS

• A/D CONVERTER DRIVERS

• I/V CONVERTER FOR DACs

• HIGH PERFORMANCE AUDIO

• PROCESS CONTROL

• TEST EQUIPMENT