Advanced Analog Technology, Inc.
AAT7204
Details are subject to change without notice
6+1-CHANNEL BUFFER FOR TFT LCD
FEATURES
6+1 Channel:
6 Channels with an Output Current of
±
30mA
(MAX); 1 V
com
with an Output
Current of
±
100mA
(MAX)
Unity Gain Buffer Capable of Driving
Large Capacitive Loads
Input Range Matched to LCD Reference
Requirements
GENERAL DESCRIPTION
The AAT7204 consists of 6+1 channel buffers
target toward the needs of thin film transistor
liquid crystal display (TFT LCD). This device
consists of a V
com
buffer circuits, two
rail-to-rail buffer amplifier circuits and 4
buffer amplifier circuits. Each buffer is capable
of driving heavy capacitive loads and offering
fast current loading ( V
com
: 100mA, the others:
30mA).
The AAT7204 comes in alternative TSSOP
Power PAD-20 or SOP20 package. Diversity
makes this device an ideal part for LCD
monitors and LCD TVs.
V
DD
Specified for 6.5V to 16.0V
TSSOP Power PAD-20 & SOP20 Package
Available
PIN CONFIGURATION
TOP VIEW
TSSOP Power PAD-20 & SOP20 Package
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Advanced Analog Technology, Inc.
AAT7204
PIN DESCRIPTION
PIN NO.
NAME
V
DD
I/O
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
I
O
O
O
O
O
O
-
O
I
I
I
-
I
I
I
I
I
I
I
Power Supply
Buffer Channel 1 Output
Buffer Channel 2 Output
Buffer Channel 3 Output
Buffer Channel 4 Output
Buffer Channel 5 Output
Buffer Channel 6 Output
-
Com Buffer Output
Ground
Ground
Com Buffer Input
-
Buffer Channel 6 Input
Buffer Channel 5 Input
Buffer Channel 4 Input
Buffer Channel 3 Input
Buffer Channel 2 Input
Buffer Channel 1 Input
Power Supply
o1
o2
o3
o4
o5
o6
NC
O
com
GND
GND
I
com
NC
i6
i5
i4
i3
i2
i1
V
DD
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Advanced Analog Technology, Inc.
AAT7204
ABSOLUTE MAXIMUM RATINGS
CHARACTERISTICS
Supply Voltage
SYMBOL
V
DD
V
I
V
O
I
L
T
J
T
C
T
storage
---
VALUE
+18
−
0.5
to V
DD
+
0.5
−
0.5
to V
DD
+
0.5
±
30
±
100
+125
−
20
to +85
−
45
to +125
UNIT
V
Input Voltage
Output Voltage
Output Loading Current for Gamma ,
Rail-to-Rail Buffer
Output Loading Current for Com Buffer
Maximum Junction Temperature
Operating Temperature
Storage Temperature
Lead Temperature (Soldering for 10
Seconds)
V
V
mA
mA
o
C
o
o
o
C
C
C
260
Note 1: Values beyond absolute maximum ratings may cause permanent damage to the device.
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Advanced Analog Technology, Inc.
AAT7204
ELECTRICAL CHARACTTERISTICS (V
DD
=10V, T
C
=25
o
C UNLESS
OTHERWISE SPECIFIED)
POWER SUPPLY PERFORMANCE
PARAMETER
TEST CONDITIONS
MN
TYP
MAX
UNITS
Power Supply Rejection
Ratio
Supply Current
PSRR
I
S
V
DD
varies from 6.5V to
16.0V
-
-
80
6.7
-
-
dB
mA
INPUT CHARACTERISTICS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Input Offset Voltage
V
OS
I
B
V
I
= V
DD
/2,
V
O
= V
DD
/2
V
I
= V
DD
/2,
V
O
= V
DD
/2
-
2
12
mV
Input Bias Current
-
2
50
nA
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Advanced Analog Technology, Inc.
AAT7204
OUTPUT CHARACTERISTICS
PARAMETER
TEST CONDITIONS
MIN TYP
MAX
UNITS
Output Swing Low
V
OL
I
L
=5mA (Buffer 1, 6)
V
I
=0V
I
L
=10mA (Buffer 2, 3, 4, 5)
V
I
=1V
I
L
=
−
5
mA (Buffer 1, 6)
V
I
=10V
I
L
=
−
10
mA (Buffer 2, 3, 4, 5)
V
I
=9V
I
L
=10mA, V
I
=5V
I
L
=
−
10
mA, V
I
=5V
I
L
=50mA, V
I
=5V
I
L
=
−
50
mA, V
I
=5V
(Buffer 2~5 )
(Com Buffer, Buffer1, 6)
-
-
9.85
8.95
-
4.96
-
4.95
-
-
0.08
1.02
9.92
8.98
5.02
4.98
5.03
4.97
±
70
±
180
0.15
1.05
-
-
5.04
-
5.05
-
-
-
V
V
V
V
V
V
V
V
mA
mA
Output Swing High
V
OH
Output Swing
(Buffer 2, 3, 4, 5)
Output Swing (COM)
Short Circuit Current
V
OL
V
OH
V
OL
V
OH
I
SC
AC Characteristics
Parameter
Test Conditions
Min
Typ
Max
Units
Slew Rate (Note 2)
SR
V
I
=2V to 8V,
20% to 80%
V
I
=4.5V to 5.5V
V
I
=5.5V to 4.5V
0.1%
0.1%
-
1
-
V/
µ
s
Settling Time
t
s
-
5
-
µ
s
Note 2: Slew rate is measured on rising and falling edges.
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