ADD8709:  18-Channel Gamma Buffer with Regulator

The ADD8709 is an 18-channel gamma reference for use in high-resolution TFT LCD monitor and TV panels. The output buffers feature low offset voltage and high current drive under transient load ...More

This product is currently being phased out of production.
Not recommended for new designs.

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ADD8709:  18-Channel Gamma Buffer with Regulator

Product Description

The ADD8709 is an 18-channel gamma reference for use in high-resolution TFT LCD monitor and TV panels. The output buffers feature low offset voltage and high current drive under transient load conditions to provide a more accurate and stable gamma curve. Two channels swing to VDD and two channels swing to GND, increasing the overall range of the curve. An on-board voltage regulator is available for external applications. Here again, external component costs are reduced and the quality of the gray scale is increased.

The ADD8709 is specified over the temperature range of –40°C to +100°C and comes in a robust, low profile quad flat package.

Features

  • Integrated Voltage Regulator
  • Upper/lower Buffers Swing to VDD/GND
  • Single-supply Operation: 7.5 V to 16.5 V
  • Continuous Current Drive: 15 mA
  • High Peak Output Current: 150 mA
  • Low Offset Voltage: 15 mV Max
  • Output Voltage Stable under Transient Load Conditions

Diagrams

ADD8709 Diagram
Functional Block Diagram for ADD8709

Specifications

Vcc-Vee Supply (V) 7 to 16
Iq per Amplifier (max) 0.94mA
-3dB Bandwidth 4.5MHz
Aol n/a
I out Capability 15mA
Capacitive Load 200pF
Slew Rate 6V/µs
Vos 5mV
Ib 1.5µA
Features 18-Channel Gamma Buffers
Packages QFP

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