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PDF ( 数据手册 , 数据表 ) ADD8709ASTZ-REEL

零件编号 ADD8709ASTZ-REEL
描述 18-Channel Gamma Buffer with Regulator
制造商 Analog Devices
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ADD8709ASTZ-REEL 数据手册, 描述, 功能
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
2 VREG
3
4
5
6
7
8
9
10
11
12
18 18
36
35
34
33
32
31
30
29
28
27
26
25
13 14 15 16 17 18 19 20 21 22 23 24
Figure 1. 48-Lead LQFP
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.







ADD8709ASTZ-REEL pdf, 数据表
ADD8709
TYPICAL PERFORMANCE CHARACTERISTICS
12
11
10
9
8
7
6
5
4
3
2
1
0
0 2 4 6 8 10 12 14 16 18
SUPPLY VOLTAGE (V)
Figure 4. Supply Current vs. Supply Voltage
11.0
10.9
10.8
10.7
10.6
10.5
10.4
–20
0 20 40 60 80 100
TEMPERATURE (°C)
Figure 5. Supply Current vs. Temperature
120
20
ISINK = 25mA ISINK = 15mA
15
ISINK = 5mA
10
5
0
ILOAD = 0mA
–5
–10
–15
–20
–25
ISOURCE = 25mA
–30
–35
–20 –10 0
ISOURCE = 15mA ISOURCE = 5mA
10 20 30 40 50 60 70 80 90 100 110 120
TEMPERATURE (°C)
Figure 6. Output Voltage Error vs. Temperature
30
CH1 SOURCE
CH1 SINK
25 CH2 SOURCE
CH2 SINK
20
15
10
5
0
0.1 1.0 10
LOAD CURRENT (mA)
Figure 7. Output Voltage Error vs. Load Current
100
30
CH3 SOURCE
CH3 SINK
25 CH9 SOURCE
CH9 SINK
20
15
10
5
0
0.1 1.0 10
LOAD CURRENT (mA)
Figure 8. Output Voltage Error vs. Load Current
100
30
CH10 SOURCE
CH10 SINK
25 CH16 SOURCE
CH16 SINK
20
15
10
5
0
0.1 1.0 10
LOAD CURRENT (mA)
Figure 9. Output Voltage Error vs. Load Current
100
Rev. 0 | Page 8 of 16







ADD8709ASTZ-REEL equivalent, schematic
ADD8709
NOTES
© 2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04715–0–7/04(0)
Rev. 0 | Page 16 of 16










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