BUF16820 Datasheet, PDF (18/30 Pages) Burr-Brown (TI) – 14-Channel GAMMA VOLTAGE GENERATOR with Programmable VCOM Outputs and OTP Memory

BUF16820
SBOS356A − FEBRUARY 2006 − REVISED OCTOBER 2006
18V
2V to 5.5V
17.8V
BUF16820
Digital
Analog
REFH
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Reference buffer and V_COM outputs
can be used for extra gamma channels.
(REFH OUT
will be a fixed
voltage.)
REFH OUT
17V
Source
Driver
GMA 1
V_{C OM1}
GMA 2
V_{C OM2}
GMA 3
OUT1
OUT2
GMA 4
GMA 5
SDA
SCL
LD
2 V_COM Channels plus
14 Output Channels
OUT13
GMA 16
Control IF
A0
18V
2V to 5.5V
Digital
BUF01900
OUT14
REFL OUT
0.2V
GMA 17
GMA 18
REFL
0.2V
18V
Analog
Voltage
Regulator
Panel
Output of reference
buffer can be used
for an extra fixed
gamma channel.
BIAS
V_{C OM}
SDA
SCL
4 x OTP Switch
ROM Control
10−Bit
DAC
250kΩ
V_COM
Buffer
V_COM OUT
Control IF
A0
Figure 17. 18-Gamma Channel Solution
18