ADD8701ACP-R2

Overview

The ADD8701ACP-R2 is a 12-channel gamma buffer amplifier and VCOM driver designed for high-resolution TFT LCD panels. It operates from a single supply of 7 V to 16 V or dual supplies of ±3.5 V to ±8 V, with a maximum supply current of 13 mA. The device features 12 gamma buffers providing 10 mA continuous output current and a dedicated VCOM buffer capable of 35 mA continuous and 250 mA peak output current. Key electrical specifications include a maximum offset voltage of 15 mV, a slew rate of 6 V/µs, and operation over a temperature range of –40°C to +85°C. It is housed in a 32-lead LFCSP package.

Feature Summary

• Integrates 12 independent gamma reference buffers and one VCOM buffer within a single low-cost component.
• Provides rail-to-rail output swing capability for both positive and negative gamma references.
• Features high capacitive load drive capability, supporting up to 1,000 nF on the VCOM output.
• Includes internal ESD protection circuits on all inputs and outputs.

Applications

• TFT LCD Panel Gamma Reference Buffers
• LCD Source Driver Control Circuits
• VCOM Buffer for Display Back Plate Voltage Control

Procurement Notes

Verify the specific suffix R2 against official Analog Devices documentation to confirm reel packaging and quantity details. Ensure compatibility with the 32-lead LFCSP (CP-32) footprint during PCB layout. Confirm that the operating voltage range aligns with the system's power supply design before integration.

Selection Notes

Select this component for applications requiring multiple precise analog voltage references for LCD grayscale correction. The integrated VCOM buffer simplifies designs by eliminating the need for a separate high-current driver. Consider the thermal performance of the LFCSP package if operating at the upper limits of the specified temperature range.

Part Context

The ADD8701 belongs to a family of display driver components manufactured by Analog Devices using advanced CBCMOS processes. It is specifically engineered to address the cost and complexity challenges associated with driving high-resolution TFT-LCD panels. The device consolidates functions that would otherwise require multiple discrete amplifiers.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.