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PDF ATT3209 Data sheet ( Hoja de datos )
| Número de pieza | ATT3209 | |
| Descripción | Temperature Compensating Gamma Trimster TM ATT3209 | |
| Fabricantes | ETC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ATT3209 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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Preliminary Information
Temperature Compensating Gamma Trimster™ ATT3209
FEATURES
DESCRIPTION
The ATT3209 is a programmable gamma
• 9 Programmable Buffered Gamma
Correction Outputs (VGMA0 – VGMA8)
− VGMA Output Range 0 to 14V
− VGMA Output Accuracy Better Than 1% of
AVDD Reference
− VGMA Output Drive > 100µA
• Nonvolatile Storage of 32 Gamma
Reference Providing
− Dynamic Gamma Correction and Gamma
Correction Based on Programmed
Temperature Profiles
• 2 Programmable Buffered VCOM Outputs
• In System Programmability
reference that is designed to address gamma
correction in high-resolution LCD panels.
The gamma voltage out puts are programmable
with their individual output values saved in a
nonvolatile analog storage cell. The storage
cells are arranged in a 9 x 32 array allowing
thirty-two gamma correction profiles to be
stored. Depending upon the application
requirements the ATT3209 is configured to
provide either two or three temperature
compensated Bank Select outputs that would be
used to drive the respective Bank Select inputs
of the AGT3209 Gamma Trimster.
• Digital Programming Interface
APPLICATIONS
• Yield Improvement through Gamma
Programming at Test
• Simple Implementation of Dynamic Gamma
In addition to the VGMA outputs there are two
programmable VCOM outputs providing
independent multiple VCOM trim points to
minimize flicker on the LCD panel.
Compensation
• LCD Panel Color Calibration
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• Optimized Temperature Dependent Gamma
Correction
DataShee
DataSheet4U.com
Proprietary and Confidential
DataSheet4 U .com
Typical Application
Rev 2/7/2005
1 page  
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Alta Analog
ATT3209
et4U.com
INPUT / OUTPUT FUNCTION DESCRIPTION
Name
VDD
AVDD
VGMA0-
VGMA8
B0 – B2
Description
Digital Supply
Input
Analog Supply
Analog Outputs
Bank Select
B3 – B5
Bank Select
VREF 1/
VREF 2
AOUT
VPP
Input Reference
voltages
Analog Output
Programming
Voltage
&
Serial Clock
DTSEL
Temperature
Profile Select
VTEMP
Temperature
sensor input
ATTEN ATT enable input
OSC
BEN
Oscillator output
Bank ENABLE
Value Range
Function
3V to 3.3V
10-14 V
VREF 1 to VREF 2
Analog Gamma Output Channels
During normal ATT3209 operation the B0 –
I/O’s
B2 pins are outputs that output the result of
the temperature profile logic.
The B3-B5 inputs are the dynamic bank
select inputs. The state of DTSEL
CMOS inputs
determines whether the banks are arranged
as 8 banks of 4 profiles or 4 banks of 8
profiles.
0-14 Volts
Reference voltages for generating VGMA
outputs.
Outputs the current value of the selected
channel of the selected bank during
programming
Dual Function:
10-14Volts
Programming mode - Input for VPP pulses
for adjusting the VGMA output values.
VIL to VIH
Digital mode – clock input for serial
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Internally this input tied to ground through a
100K ohm resistor. The state of DTSEL
selects the five B inputs that will be used by
CMOS Input
the ATT3209. DTSEL low configures the
array 4 banks of 8 temperature profiles.
DTSEL high configures the array 8 dynamic
banks of 4 temperature profiles.
Internally this input tied to ground through a
100K ohm resistor. Temperature sensor
input to the programmable temperature
profile array.
Internally this input tied to ground through a
CMOS input
100K ohm resistor. This input should be tied
directly to VCC for normal device operation.
OSC is an output used during test and will
be a no–connect during normal device
operation.
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Proprietary and Confidential
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Page 5
Revision 2/7/2005
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet ATT3209.PDF ] | |
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