OPA691中文资料德州仪器数据手册PDF规格书

1 Features

• Wideband operation: 340 MHz (G = 4V/V)

• Unity-gain stable: 730 MHz (G = 1V/V)

• High output current: ±1000 mA

• Active off-line mode for TDMA

• Adjustable power modes:

– Full-bias mode: 16.5 mA/channel

– 75 bias mode: 12.5 mA/channel

– 50 bias mode: 8.5 mA/channel

– Off-Line mode: 2.4 mA/channel

• Bipolar-supply range: ±2.5 V to ±6.5 V

• Single-supply range: 4.5 V to 13 V

• High slew rate: 3500 V/μs

• Overtemperature protection circuit

• Output current limit (±1.3 A)

2 Applications

• Power-line modems

• Matched I/Q channel amplifiers

• Broadband video line drivers

• ARB line drivers

• High cap load drivers

• Ultrasonic-Piezo drivers

3 Description

The OPA2675 provides the high output current

and low distortion required for power-line modem

driver and test and measurement applications. The

OPA2675 operates on power-supplies ranging from

4.5 V to 13 V and consumes a low 16.5 mA/channel

quiescent current to deliver a very high 1000 mA

output current. The OPA2675 can support the most

demanding power-line modem requirements with 850

mA assured minimum output current drive (at 25 °C).

Power control features are included to minimize

system power consumption. Two logic control lines

allow for four quiescent power settings: full power,

75 bias power, 50 bias power and offline mode

with active offline control to present a high impedance

with large signals present at the output pin. The two

channels of OPA2675 can be used independently

as individual op amps or can be configured as a

differential-input to differential-output, high current line

driver.