12-Channel Gamma Buffers with VCOM and
Regulator ADD8707
FEATURES
12 precision gamma reference outputs Mask-programmable gamma resistors: 0.
2% resolution and 0.
1% accuracy Mask programmable voltage
regulator: 0.
4% accuracy Upper 6 buffers swing to VDD Lower 6 buffers swing to GND Single-supply operation: 7.
5 V to 16 V Gamma current drive: 15 mA per channel VCOM peak output current: 250 mA Outputs stable under load conditions 48-lead, Pb-free LFCSP package
FUNCTIONAL BLOCK DIAGRAM
VREG OUT
MASK-PROGRAMMABLE
REGULATOR RESISTORS
FB
700Ω* VCOM GND + – GAMMA BUFFERS VOUT12 700Ω* 700Ω* MASKPROGRAMMABLE GAMMA RESISTORS VIN8 700Ω* 700Ω* 700Ω* VIN6 VIN5 700Ω* VCOM OUT
1.
2V
VCOM IN+
VCOM IN–
VI...