Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 1 of 16 V 1.0
AAT7200/A
Details are subject to change without notice
14+1-Channel Buffer for TFT LCD
Features
14-Channels with Output Current: +30mA
(MAX)
One channel
com
V
with Output Current:
+100mA (MAX)
Unity Gain Buffer Capable of Driving
Large Capacitive Loads
Input Range Adjusted to Match TFT LCD
Requirements
DD
V
Specified for 6.5V to 16V
TQFP-48 Package
General Description
Consisted of 14+1-channel buffers, the
AAT7200 is designed to increase the driving
capability for the needs of the thin film
transistor liquid crystal display (TFT LCD).
This device includes a
com
V
buffer circuits,
four rail to rail buffer amplifiers circuits, and
10 buffer amplifiers circuits. Each buffer is
capable of driving heavy load and offering fast
current loading (
com
V
: 100mA, the others:
30mA).
.
Pin Configuration
TOP VIEW
TQFP-48
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 2 of 16 V 1.0
AAT7200/A
Pin Description
Pin No.
Name
I/O
Description
1
O13
O
Buffer Channel 13 Output
2
O12
O
Buffer Channel 12 Output
3
O11
O
Buffer Channel 11 Output
4
O10
O
Buffer Channel 10 Output
5
O9
O
Buffer Channel 9 Output
6
O8
O
Buffer Channel 8 Output
7 GND I
Ground
8
DD
V
I Power
Supply
9
O7
O
Buffer Channel 7 Output
10
O6
O
Buffer Channel 6 Output
11
O5
O
Buffer Channel 5 Output
12
O4
O
Buffer Channel 4 Output
13
O3
O
Buffer Channel 3 Output
14 NC -
-
15
DD
V
I Power Supply
16 NC -
-
17 NC -
-
18
O2
O
Buffer Channel 2 Output
19 GND I
Ground
20
O1
O
Buffer Channel 1 Output
21 GND I
Ground
22
DD
V
I Power
Supply
23
I1
I
Buffer Channel 1 Input
24
I2
I
Buffer Channel 2 Input
25
I3
I
Buffer Channel 3 Input
26
I4
I
Buffer Channel 4 Input
27
I5
I
Buffer Channel 5 Input
28
I6
I
Buffer Channel 6 Input
29
I7
I
Buffer Channel 7 Input
30
DD
V
I Power
Supply
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 3 of 16 V 1.0
AAT7200/A
Pin Description (Cont.)
Pin No.
Name
I/O
Description
31 GND
I
Ground
32
I8
I
Buffer Channel 8 Input
33
I9
I
Buffer Channel 9 Input
34
I10
I
Buffer Channel 10 Input
35
I11
I
Buffer Channel 11 Input
36
I12
I
Buffer Channel 12 Input
37
I13
I
Buffer Channel 13 Input
38
I14
I
Buffer Channel 14 Input
39
com
I
I
Com Buffer Positive Input
40* NC -
(For AAT7200 Only)
40*
-
com
I
-
Com Buffer Negative Input (For AAT7200A
Only)
41 NC -
-
42 NC -
-
43
DD
V
I Power
Supply
44 GND
I
Ground
45
DD
V
I Power
Supply
46 GND
I
Ground
47
com
O
O
Com Buffer Output
48
O14
O
Buffer Channel 14 Output
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 4 of 16 V 1.0
AAT7200/A
Absolute Maximum Ratings
CHARACTERISTICS SYMBOL VALUE UNIT
Supply Voltage
DD
V
+18 V
Input Voltage
I
V
5
.
0
-
to
5
.
0
V
DD
+
V
Output Voltage
O
V
5
.
0
-
to
5
.
0
V
DD
+
V
Output Loading Current for Gamma ,
Rail-to-Rail Buffer
30
mA
Output Loading Current for Com Buffer
L
I
100
mA
Maximum Junction Temperature
J
T
+125
o
C
Operating Temperature
C
T
20
-
to +85
o
C
Storage Temperature
storage
T
45
-
to +125
o
C
Lead Temperature
(Soldering for10 seconds)
---
260
o
C
Note 1
:
Operating device at values beyond absolute maximum ratings may cause permanent damage.
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 5 of 16 V 1.0
AAT7200/A
Electrical Characteristics
(
DD
V
=10V,
C
T
=25
o
C unless otherwise specified)
Power Supply Performance
Parameter
Test
Conditions Min
Typ
Max
Units
Power Supply Rejection
Ratio
PSRR V
DD
from 6.5V to 16.0V
-
80
-
dB
Supply Current
S
I
-
9
-
mA
Input Characteristics
Parameter
Test
Conditions Min
Typ
Max
Units
Input Offset Voltage
OS
V
I
V =
DD
V
/2 ,
O
V =
DD
V
/2
- 2 12 mV
Input Bias Current
B
I
I
V =
DD
V
/2 ,
O
V =
DD
V
/2
- 2 50 nA
AC Characteristics
Parameter
Test
Conditions
Min
Typ Max Units
Slew Rate
SR
I
V =2V to 8V,
20% to 80%
- 1 -
s
V
Settling Time
s
t
I
V =4.5V to 5.5V 0.1%
I
V =5.5V to 4.5V 0.1%
- 5 -
s
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