MAX9673 Datasheet | Maxim Integrated

19-4718; Rev 4; 2/11 EVAALVUAAILTAIOBNLEKIT 10-Bit, Programmable Gamma Reference Systems with MTP for TFT LCDs MAX9672/MAX9673/MAX9674 General Description The MAX9672/MAX9673/MAX9674 output 12/14/16 voltage references for gamma correction in TFT LCDs and one voltage reference for V. Each gamma reference voltage has its own 10-bit DAC and buffer to ensure a stable voltage. The V reference voltage has its own 10-bit DAC and an amplifier to ensure a stable voltage when critical levels and patterns are displayed. The MAX9672/MAX9673/MAX9674 feature integrated multiple-time programmable (MTP) memory to store gamma and V values on the chip, eliminating the need for external EEPROM. The MAX9672/ MAX9673/MAX9674 support up to 300 write operations to the on-chip nonvolatile memory. The gamma outputs can drive 200m A peak transient current and settle within 1µs. The V output can provide 600m A 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 V value are programmed into registers through the I2C interface. Applications TFT LCDs Pin Configuration AVDD REF GMA8 GMA7 GMA6 GMA5 GMA4 TOP VIEW 21 20 19 18 17 16 15 GMA9 22 GMA10 23 GMA11 24 GMA12 25 GMA13- 26 MAX9672 MAX9673 MAX9674 GMA14- 27 + EP† GMA15- - 28 14 GMA3 13 GMA2 12 GMA1 11 GND 10 AVDD 9 AVDD_AMP 8 V_FB 1 234567 GMA16- - SCL SDA A0 DVDD AGND_AMP THIN QFN (5mm × 5mm) †EP = EXPOSED PAD, CONNECT EP TO GROUND...