OPA725AIDR Audio Power Amplifier IC Op Amps Very Low-Noise High Speed 12V CMOS

FEATURES
D BANDWIDTH: 20MHz

D SLEW RATE: 30V/μs
D FAST 16-BIT SETTLING TIME
D LOW NOISE: 6nV/√Hz (typ) at 100kHz
D EXCELLENT CMRR, PSRR, and AOL
D RAIL-TO-RAIL OUTPUT
D CM RANGE INCLUDES GND
D THD+N: 0.0003% (typ) at 1kHz
D QUIESCENT CURRENT: 5.5mA/ch (max) D SUPPLY VOLTAGE: 4V to 12V
D SHUTDOWN MODE (OPAx726): 6μA/ch

APPLICATIONS
D OPTICAL NETWORKING

D TRANSIMPEDANCE AMPLIFIERS D INTEGRATORS
D ACTIVE FILTERS
D A/D CONVERTER BUFFERS

D I/V CONVERTER FOR DACs D PORTABLE AUDIO
D PROCESS CONTROL
D TEST EQUIPMENT

DESCRIPTION

The OPA725 and OPA726 series op amps use a state-of-the-art 12V analog CMOS process, and combine outstanding ac performance with low bias current and excellent CMRR, PSRR, and AOL. The 20MHz Gain-Bandwidth (GBW) Product is achieved by using a proprietary and patent-pending output stage design. These characteristics allow excellent 16-bit settling times for driving 16-bit Analog-to-Digital converters (ADCs).

Excellent ac characteristics, such as 20MHz GBW, 30V/μs slew rate and 0.0003% THD+N make the OPA725 and OPA726 well-suited for communication, high-end audio, and active filter applications. With a bias current of less than 200pA, they are well-suited for use as transimpedance (I/V-conversion) amplifiers for monitoring optical power in ONET applications.

The OPA725 and OPA726 op amps can be used in single-supply applications from 4V up to 12V, or dual-supply from ±2V to ±6V. The output swings to within 150mV of the rails, maximizing dynamic range. The shutdown versions (OPAx726) reduce the quiescent current to less than 6μA and feature a reference pin for easy shutdown operation with standard CMOS logic in dual-supply applications.

The OPA725 (single) is available in SOT23-5 and SO-8 packages, and the OPA2725 (dual) is available in MSOP-8 and SO-8 packages. The OPA726 (single with shutdown) is available in MSOP-8 and SO-8. The OPA2726 (dual with shutdown) is available in MSOP-10. All versions are specified for operation from −40°C to +125°C.