ADD8709 Datasheet, PDF (1/16 Pages) Analog Devices – 18-Channel Gamma Buffer with Regulator

FEATURES
Integrated voltage regulator
Upper/lower buffers swing to VDD/GND
Single-supply operation: 7.5 V to 16.5 V
Continuous current drive: 15 mA
High peak output current: 150 mA
Low offset voltage: 15 mV max
Output voltage stable under transient load conditions
APPLICATIONS
TFT LCD monitor panels
TFT LCD TV panels
GENERAL DESCRIPTION
The ADD8709 is an 18-channel gamma reference for use in
high-resolution TFT LCD monitor and TV panels. The output
buffers feature low offset voltage and high current drive under
transient load conditions to provide a more accurate and stable
gamma curve. Two channels swing to VDD and two channels
swing to GND, increasing the overall range of the curve. An
on-board voltage regulator is available for external applications.
Here again, external component costs are reduced and the
quality of the gray scale is increased.
The ADD8709 is specified over the temperature range of
–40°C to +100°C and comes in a robust, low profile quad
flat package.
18-Channel Gamma Buffer
with Regulator
ADD8709
FUNCTIONAL BLOCK DIAGRAM
48 47 46 45 44 43 42 41 40 39 38 37
1
36
2
V_REG
35
3
34
4
33
5
32
6
31
18
18
7
30
8
29
9
28
10
27
11
26
12
25
13 14 15 16 17 18 19 20 21 22 23 24
Figure 1. 48-Lead LQFP
Rev. 0
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