ADD8706ACPZ-REEL7

Overview

The ADD8706 is a single-supply operational amplifier featuring five buffers and one VCOM amplifier, optimized for TFT LCD panels. It operates on a supply voltage range of 4.5 V to 16.5 V with a total supply current of 4.5 mA to 5.4 mA at 25°C. The device provides a slew rate of 6 V/µs and a bandwidth of 6 MHz. Buffer A swings to the top rail, while Buffers B through E swing near ground. Amplifier F delivers up to 35 mA continuous output current for VCOM applications. Input offset voltage is typically 15 mV, and the input bias current is 1100 nA. The component is housed in a 16-lead TSSOP package.

Feature Summary

• Integrated five-channel buffer array with specialized designs for high, mid, and low gamma reference voltages.
• Dedicated VCOM amplifier capable of delivering high continuous and peak currents for common voltage generation.
• Rail-to-rail output capability across all channels, ensuring full dynamic range utilization.
• Unity gain stable operation with large capacitive loads typical of LCD panel drivers.

Applications

• TFT LCD monitor panels
• TFT LCD notebook panels
• ADC/DAC buffer circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Ensure compatibility with the required supply voltage and load conditions. Cross-reference the part number with authorized distributors to confirm availability and authenticity. Check for any recent revision updates that may affect electrical characteristics or pin configurations before finalizing procurement.

Selection Notes

Select this component when designing gamma correction circuits for TFT LCD displays requiring integrated buffer solutions. Consider the distinct input/output characteristics of each channel, particularly the asymmetric drive capabilities of Buffers A and E. Evaluate the power supply constraints, as the device requires a minimum of 4.5 V. Ensure the application benefits from the high capacitive load drive stability provided by the internal compensation.

Part Context

The ADD8706 belongs to Analog Devices' portfolio of precision amplifiers designed for display driver applications. It consolidates multiple buffer functions into a single package, reducing board space and component count for LCD gamma reference generation. The device addresses the specific needs of column drivers by providing tailored output stages for different voltage ranges within the gamma curve.

Replacement Considerations

Consult the manufacturer's official replacement guide for verified substitute part numbers. Ensure any alternative component matches the 16-lead TSSOP footprint and electrical specifications for LCD gamma buffering.

FAQ

What is the maximum continuous output current for the VCOM amplifier?

Amplifier F, designated for VCOM applications, can deliver a continuous output current of 35 mA.

How do the input voltage ranges differ between Buffer A and Buffer E?

Buffer A includes the top rail but is limited to 1.7 V away from the bottom rail, whereas Buffer E is designed for lower swing applications with limited sourcing capability.