Low Power Video Difference Amplifier

The LT1189 is a difference amplifier optimized for operation on ±5V, or a single 5V supply, and gain ≥10. This versatile amplifier features uncommitted high input impedance (+) and (–) inputs, and can be used in differential or single-ended configurations. Additionally, a second set of inputs give gain adjustment and DC control to the difference amplifier.

The LT1189’s high slew rate, 220V/µs, wide bandwidth, 35MHz, and ±20mA output current require only 13mA of supply current. The shutdown feature reduces the power dissipation to a mere 15mW, and allows multiple ers to drive the same cable.

The LT1189 is a low power, gain of 10 stable version of the popular LT1193, and is available in 8-pin mini DIPs and SO packages. For lower gain applications see the LT1187 data sheet.

Applications

* Line Receivers

* Video Signal Processing

* Cable Drivers

* Tape and Disc Drive Systems

* Differential or Single-Ended Gain Block (Adjustable)

* -3dB Bandwidth, AV = ±10: 35MHz

* Slew Rate: 220V/µs

* Low Supply Current: 13mA

* Output Current: ± 20mA

* CMRR at 10MHz: 48dB

* LT1193 Pin Out

* Low Cost

* Single 5V Operation

* Drives Cables Directly

* Output Shutdown