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Status

Active: In Production.

Description

Request Full Data Sheet The MAX9668 outputs eight voltage references for gamma correction in TFT LCDs and one voltage reference for VCOM. Each gamma reference voltage has its own 10-bit digital-to-analog converter (DAC) and buffer to ensure a stable voltage. The VCOM reference voltage has its own 10-bit DAC and an amplifier to ensure a stable voltage when critical levels and patterns are displayed. The MAX9668 features integrated multiple-time programmable (MTP) memory to store gamma and VCOM values on the chip, eliminating the need for external EEPROM. The MAX9668 supports up to 100 write operations to the on-chip nonvolatile memory. The gamma outputs can drive 200mA peak transient current and settle within 1µs. The VCOM output can provide 600mA peak transient current and also settles within 1µs. The analog supply voltage range extends from 9V to 20V, and the digital supply voltage range extends from 2.7V to 3.6V. Gamma values and the VCOM value are programmed into registers through the I²C interface.

Key Features		Applications/Uses
8-Channel Gamma Correction 10-Bit Resolution VCOM Driver Integrated MTP Memory Programmable VCOM Limits 1µs Settling Time 20V Maximum Analog Supply Voltage 200mA Peak Current on Gamma Channels 600mA Peak Current on VCOM Channel		TFT LCDs

Diagram

Functional Diagram

Design Guides

Displays (PDF)

Reliability Reports

Reliability Report: MAX9668.pdf Show FIT data for: MAX9668

Software/Models

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Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-3 of 3

MAX9668	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9668EVKIT+			Active	Land Pattern: Not Available		See data sheet
MAX9668ETP+			Active	TQFN;20 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0010 (PDF) Use pkgcode/variation: T2055+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9668ETP+T			Active	TQFN;20 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0010 (PDF) Use pkgcode/variation: T2055+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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