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PDF EL5325 Data sheet ( Hoja de datos )
| Número de pieza | EL5325 | |
| Descripción | 12-Channel TFT-LCD Reference Voltage Generator | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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®
Data Sheet
March 5, 2004
EL5325
FN7437.1
12-Channel TFT-LCD Reference Voltage
Generator
The EL5325 is designed to produce
the reference voltages required in
TFT-LCD applications. Each output is
programmed to the required voltage with 10 bits of
resolution. Reference pins determine the high and low
voltages of the output range, which are capable of swinging
to either supply rail. Programming of each output is
performed using the 3-wire, SPI compatible interface.
A number of EL5325 can be stacked for applications
requiring more than 12 outputs. The reference inputs can be
tied to the rails, enabling each part to output the full voltage
range, or alternatively, they can be connected to external
resistors to split the output range and enable finer
resolutions of the outputs.
The EL5325 has 12 outputs and is available in a 28-pin
TSSOP package. They are specified for operation over the
full -40°C to +85°C temperature range.
Ordering Information
www.DataSheet4U.com
PART
NUMBER
PACKAGE
TAPE &
REEL
PKG.
DWG. #
EL5325IRZ
(Note)
28-Pin TSSOP
(Pb-Free)
-
MDP0044
EL5325IRZ-T7
(Note)
28-Pin TSSOP
(Pb-Free)
7”
MDP0044
EL5325IRZ-T13
(Note)
28-Pin TSSOP
(Pb-Free)
13”
MDP0044
NOTE: Intersil Pb-Free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is compatible with both SnPb and Pb-
free soldering operations. Intersil Pb-Free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J Std-020B.
Features
• 12-channel reference outputs
• Accuracy of ±1%
• Supply voltage of 5V to 16.5V
• Digital supply 3.3V to 5V
• Low supply current of 10mA
• Rail-to-rail capability
• Internal thermal protection
• Pb-Free Available
Applications
• TFT-LCD drive circuits
• Reference voltage generators
Pinout
EL5325
(28-PIN TSSOP)
TOP VIEW
ENA 1
SDI 2
SCLK 3
SDO 4
EXT_OSC 5
VS 6
NC 7
VSD 8
REFH 9
REFL 10
VS 11
GND 12
CAP 13
NC 14
28 OUTA
27 OUTB
26 OUTC
25 GND
24 OUTD
23 OUTE
22 OUTF
21 OUTG
20 OUTH
19 OUTI
18 GND
17 OUTJ
16 OUTK
15 OUTL
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
1 page  
Typical Performance Curves (Continued)
M=400µs/DIV
5V
0V
5V
0V
200mV
SCLK
SDA
OUTPUT
0V
EL5325
M=400µs/DIV
OUTPUT
SCLK
SDA
FIGURE 7. SMALL SIGNAL RESPONSE (RISING FROM 0V
TO 200mV)
FIGURE 8. SMALL SIGNAL RESPONSE (FALLING FROM
200mV TO 0V)
JEDEC JESD51-3 LOW EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
0.9 833mW
0.8
0.7
0.6
0.5
θJA =T1S2S0°OCP/W28
0.4
0.3
0.2
0.1
0
0
25
50
75 85 100
125
AMBIENT TEMPERATURE (°C)
FIGURE 9. POWER DISSIPATION vs AMBIENT
TEMPERATURE
General Description
The EL5325 provides a versatile method of providing the
reference voltages that are used in setting the transfer
characteristics of LCD display panels. The V/T
(Voltage/Transmission) curve of the LCD panel requires that
a correction is applied to make it linear; however, if the panel
is to be used in more than one application, the final curve
may differ for different applications. By using the EL5325,
the V/T curve can be changed to optimize its characteristics
according to the required application of the display product.
Each of the eight reference voltage outputs can be set with a
10-bit resolution. These outputs can be driven to within
50mV of the power rails of the EL5325. As all of the output
buffers are identical, it is also possible to use the EL5325 for
applications other than LCDs where multiple voltage
references are required that can be set to 10 bit accuracy.
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
1.4
1.333W
1.2
1
0.8
θJA =T7S5°SCO/WP28
0.6
0.4
0.2
0
0 25 50 75 85 100
AMBIENT TEMPERATURE (°C)
FIGURE 10. POWER DISSIPATION vs AMBIENT
TEMPERATURE
125
Digital Interface
The EL5325 uses a simple 3-wire SPI compliant digital
interface to program the outputs. The EL5325 can support
the clock rate up to 5MHz.
Serial Interface
The EL5325 is programmed through a three-wire serial
interface. The start and stop conditions are defined by the
ENA signal. While the ENA is low, the data on the SDI (serial
data input) pin is shifted into the 16-bit shift register on the
positive edge of the SCLK (serial clock) signal. The MSB (bit
15) is loaded first and the LSB (bit 0) is loaded last (see
Table 1). After the full 16-bit data has been loaded, the ENA
is pulled high and the addressed output channel is updated.
The SCLK is disabled internally when the ENA is high. The
SCLK must be low before the ENA is pulled low.
5
5 Page 
TSSOP Package Outline Drawing
EL5325
NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil
website at <http://www.intersil.com/design/packages/index.asp>
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
11
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| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet EL5325.PDF ] | |
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