Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 1 of 12 V 0.1
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
mA
30
(MAX); 1
com
V
with an Output
Current of
mA
100
(MAX)
Unity Gain Buffer Capable of Driving
Large Capacitive Loads
Input Range Matched to LCD Reference
Requirements
DD
V
Specified for 6.5V to 16.0V
TSSOP Power PAD-20 & SOP20 Package
Available
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
com
V
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 (
com
V
: 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.
PIN CONFIGURATION
TOP VIEW
TSSOP Power PAD-20 & SOP20 Package
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 2 of 12 V 0.1
AAT7204
PIN DESCRIPTION
PIN NO.
NAME
I/O
DESCRIPTION
1
DD
V
I Power
Supply
2
o1
O
Buffer Channel 1 Output
3
o2
O
Buffer Channel 2 Output
4
o3
O
Buffer Channel 3 Output
5
o4
O
Buffer Channel 4 Output
6
o5
O
Buffer Channel 5 Output
7
o6
O
Buffer Channel 6 Output
8 NC -
-
9
com
O
O
Com Buffer Output
10 GND I
Ground
11 GND I
Ground
12
com
I
I
Com Buffer Input
13 NC -
-
14
i6
I
Buffer Channel 6 Input
15 i5 I
Buffer Channel 5 Input
16
i4
I
Buffer Channel 4 Input
17
i3
I
Buffer Channel 3 Input
18
i2
I
Buffer Channel 2 Input
19
i1
I
Buffer Channel 1 Input
20
DD
V
I Power
Supply
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 3 of 12 V 0.1
AAT7204
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 for 10
Seconds)
---
260
o
C
Note 1: Values beyond absolute maximum ratings may cause permanent damage to the device.
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 4 of 12 V 0.1
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
PSRR
DD
V
varies from 6.5V to
16.0V
- 80 - dB
Supply Current
S
I
-
6.7
-
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
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
.
Page 5 of 12 V 0.1
AAT7204
OUTPUT CHARACTERISTICS
PARAMETER TEST
CONDITIONS
MIN
TYP
MAX UNITS
L
I =5mA (Buffer 1, 6)
I
V =0V
- 0.08 0.15
V
Output Swing Low
OL
V
L
I =10mA (Buffer 2, 3, 4, 5)
I
V =1V
- 1.02 1.05 V
L
I =
5
-
mA (Buffer 1, 6)
I
V =10V
9.85 9.92 -
V
Output Swing High
OH
V
L
I =
10
-
mA (Buffer 2, 3, 4, 5)
I
V =9V
8.95 8.98 -
V
OL
V
L
I =10mA,
I
V =5V
- 5.02 5.04 V
Output Swing
(Buffer 2, 3, 4, 5)
OH
V
L
I =
10
-
mA,
I
V =5V
4.96 4.98 -
V
OL
V
L
I =50mA,
I
V =5V
- 5.03 5.05 V
Output Swing (COM)
OH
V
I
L
=
50
-
mA,
I
V =5V
4.95 4.97 -
V
(Buffer 2~5 )
-
70
- mA
Short Circuit Current
I
SC
(Com Buffer, Buffer1, 6)
-
180
- mA
AC Characteristics
Parameter
Test
Conditions
Min
Typ Max Units
Slew Rate (Note 2)
SR
I
V =2V to 8V,
20% to 80%
- 1 - V/
s
Settling Time
s
t
I
V =4.5V to 5.5V 0.1%
I
V =5.5V to 4.5V 0.1%
- 5 -
s
Note 2: Slew rate is measured on rising and falling edges.
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