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.