AAT1301 Advanced Analog Technology, Inc., AAT1301 Datasheet

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AAT1301

Manufacturer Part Number
AAT1301
Description
Programmable Vcom Buffer
Manufacturer
Advanced Analog Technology, Inc.
Datasheet
`Product information presented is current as of publication date. Details are subject to change without notice
FEATURES
APPLICATIONS
PIN CONFIGURATION
ORDERING INFORMATION
Note: All AAT products are lead free and halogen free.
VCOM
AAT1301
AAT1301
VDDA
DEVICE
OUT
GND
TYPE
TFT LCD Panel
I
Output Range Adjustable by Resistors
7 Bits Adjustable Sink Current Output
2.6V to 5.5V Logic Voltage
6V to 18V Analog Voltage
EEPROM for VCOM Value Memory
High SR, 200mA Output Short-Current OP
2
C Interface
1
2
3
4
AAT1301-
AAT1301-
NUMBER
PART
Q9-T
T2-T
Advanced Analog Technology, Inc.
VSON8L-3x3
T2: TSSOP8
PACKAGE
Q9:
8
7
6
5
VDD
SCL
SDA
SET
PACKING
Advanced Analog Technology, Inc. –
and Reel
and Reel
T: Tape
T: Tape
台 灣 類 比 科 技 股 份 有 限 公 司
PROGRAMMABLE VCOM BUFFER
Version 1.00
Page 1 of 11
–20 C to +85 C
–20 C to +85 C
GENERAL DESCRIPTION
The AAT1301 is a programmable VCOM buffer for TFT
LCD panel application. VCOM voltage can be adjusted
and recorded by I
users may also set VCOM voltage with 7-Bit accuracy
(128 steps). To make AAT1301 an even easier
component to use, all programmed settings can be
stored in the EEPROM and recalled during power-up.
TYPICAL APPLICATION
TEMP RANGE
2
C interface in this device. In addition,
MARKING
AAT1301
AAT1301
XXXXXX
XXXXXX
Device Type
Lot no.
(6~9 Digits)
Device Type
Lot no.
(6~9 Digits)
DESCRIPTION
AAT1301
MARKING
October 2009

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AAT1301 Summary of contents

Page 1

... Note: All AAT products are lead free and halogen free. PROGRAMMABLE VCOM BUFFER GENERAL DESCRIPTION The AAT1301 is a programmable VCOM buffer for TFT LCD panel application. VCOM voltage can be adjusted and recorded by I users may also set VCOM voltage with 7-Bit accuracy (128 steps) ...

Page 2

... STORAGE SYMBOL T C – 台 灣 類 比 科 技 股 份 有 限 公 司 – Advanced Analog Technology, Inc. – – Version 1.00 Page October 2009 AAT1301 VALUE 19 6 –0. +0.5V DD –0. +0.5V DDA +125 –20 to +85 –45 to +125 ...

Page 3

... +8V 20 0.47µ OUT SYMBOL TEST CONDITION – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc. – – Version 1.00 Page AAT1301 MIN TYP MAX 8 - 2.6 - 5.5 2.1 2.2 2 700 - - MIN TYP ...

Page 4

... Advanced Analog Technology, Inc. – – Version 1.00 Page MIN TYP V SET - +0.5 3. 4.7 10.0 MIN TYP DESCRIPTION – October 2009 AAT1301 ° ambient MAX UNIT 18.0 V 67.00 k 135.00 k 134 µ MAX UNIT 400 kHz 400 ...

Page 5

... Advanced Analog Technology, Inc. TYPICAL OPERATING CHARACTERISTICS (AVDD = 10V 200k , R2 = 243k , and R = 24. +25 C Unless Otherwise Specified.) SET C – 台 灣 類 比 科 技 股 份 有 限 公 司 – Advanced Analog Technology, Inc. – – Version 1.00 Page October 2009 AAT1301 ...

Page 6

... Advanced Analog Technology, Inc. FUNCTION BLOCK DIAGRAM TYPICAL APPLICATION CIRCUIT – 台 灣 類 比 科 技 股 份 有 限 公 司 – Advanced Analog Technology, Inc. – – Version 1.00 Page October 2009 AAT1301 ...

Page 7

... Advanced Analog Technology, Inc. DETAILED DESCRIPTION The AAT1301 adjusts output voltage by sinking current. Users may easily calculate output voltage by using the following equation:  ( SETTING  V VDDA * 1 = −  OUT  “SETTING” represents the 7-Bit D/A converter setting value in above equation. It can be read or written by ...

Page 8

... Advanced Analog Technology, Inc. DESIGN PROCEDURE One of many important functions of AAT1301 is to minimize flicker in TFT-LCD panels by adjusting VCOM voltage. AAT1301 is attached to an external resistive voltage-driver to sink a programmable current (IOUT), which determines the VCOM voltage. Eq. 1 and Eq.2 can be used to calculate the output current (IOUT) and output voltage (VCOM) ...

Page 9

... Advanced Analog Technology, Inc. LAYOUT CONSIDERATION Power Supply Bypassing and PCB Layout AAT1301 performs stable gain at high frequency. Users of this device are highly recommended to use ground plane construction. To reduce oscillation, lead lengths should be as short as possible and the power supply pins must be well bypassed. ...

Page 10

... Advanced Analog Technology, Inc. PACKAGE DIMENSION TSSOP8 Dimensions In Millimeters Symbol MIN A 1.05 A1 0.05 A2 0.80 b 0.19 D 2.90 E 6.2 E1 4.3 e ----- L 0.40 TYP MAX 1.10 1.20 0.10 0.15 1.00 1.05 ----- 0.30 3.05 3.10 6.4 6.6 4.4 4.5 0.65 ----- 0.60 0.75 – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc . – – Version 1.00 Page AAT1301 – October 2009 ...

Page 11

... PACKAGE DIMENSION VSON8L-3x3 Dimensions In Millimeters Symbol MIN A 0 0.25 C 0.19 D 2.9 D2 1.65 E 2.9 E2 1.95 e ------ L 0. TYP MAX 0.9 1.0 0.02 0.05 0.30 0.35 0.20 0.25 3.0 3.1 1.70 1.75 3.0 3.1 2.00 2.05 0.65 ------ 0.35 0.40 ------ 0.076 – 台 灣 類 比 科 技 股 份 有 限 公 司 Advanced Analog Technology, Inc . – – Version 1.00 Page AAT1301 – October 2009 ...

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