BUF22821 Datasheet, PDF (5/25 Pages) Texas Instruments – Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory

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PIN #
1
2
3
4
5
6
7
8
9
10
11, 28
12, 27
13
14
15
16
17
18
19
20
21
22
23
24
25
26
29
30
31
32
33
34
35
36
37
38
BUF22821
NAME
V_COM2
STATINH
OUT21
OUT22
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
GND_A
V_S
OUT7
OUT8
OUT9
STATOUTH
V_SD
SCL
SDA
A0
BKSEL
GND_D
OUT10
OUT11
OUT12
OUT13
OUT14
OUT15
OUT16
OUT17
OUT18
STATOUTL
OUT19
OUT20
STATINL
V_COM1
SBOS399 – JUNE 2007
PIN CONFIGURATIONS (continued)
PIN DESCRIPTIONS
DESCRIPTION
V_COM channel 2
Static gamma input high; voltage can be set by external voltage divider.
DAC output 21
DAC output 22
DAC output 1
DAC output 2
DAC output 3
DAC output 4
DAC output 5
DAC output 6
Analog ground; must be connected to digital ground (GND_D).
V_S connected to analog supply
DAC output 7
DAC output 8
DAC output 9
Static gamma output high; connect to gamma input on source driver that is closest to V_S.
Digital supply; connect to logic supply
Serial clock input; open-drain, connect to pull-up resistor.
Serial data I/O; open-drain, connect to pull-up resistor.
A0 address pin for I²C address; either connect to logic 1 or logic 0.
Selects memory bank 0 or 1; either connect to logic 1 to select bank 1 or logic 0 to select bank 0.
Digital ground; must be connected to analog ground at the BUF22821.
DAC output 10
DAC output 11
DAC output 12
DAC output 13
DAC output 14
DAC output 15
DAC output 16
DAC output 17
DAC output 18
Static gamma output low; connect to gamma input on source driver that is closest to GND
DAC output 19
DAC output 20
Static gamma input low; voltage can be set by external voltage divider
V_COM channel 1
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