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EL5825IR-T13 데이터시트 PDF




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부품번호 EL5825IR-T13 기능
기능 8-Channel TFT-LCD Reference Voltage Generator
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EL5825IR-T13 데이터시트, 핀배열, 회로
®
Data Sheet
April 19, 2004
EL5825
FN7005.3
8-Channel TFT-LCD Reference Voltage
Generator
The EL5825 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 serial interface. A serial out pin enables
daisy chaining of multiple devices.
A number of the EL5825 can be stacked for applications
requiring more than 8 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 EL5825 has 8 outputs and is available in both the 24-pin
TSSOP and the 24-pin QFN packages. It is specified for
operation over the full -40°C to +85°C temperature range.
Ordering Information
PART
NUMBER
PACKAGE TAPE & REEL
EL5825IL
24-Pin QFN
-
EL5825IL-T7
24-Pin QFN
7”
EL5825IL-T13 24-Pin QFN
13”
EL5825IR
24-Pin TSSOP
-
EL5825IR-T7 24-Pin TSSOP
7”
EL5825IR-T13 24-Pin TSSOP
13”
PKG. NO.
MDP0046
MDP0046
MDP0046
MDP0044
MDP0044
MDP0044
Features
• 8-channel reference outputs
• Accuracy of ±0.1%
• Supply voltage of 4.5V to 16.5V
• Digital supply 3.3V to 5V
• Low supply current of 8mA
• Rail-to-rail capability
Applications
• TFT-LCD drive circuits
• Reference voltage generators
Pinouts
EL5825
(24-PIN TSSOP)
TOP VIEW
EL5825
(24-PIN QFN)
TOP VIEW
1 SCLK
SDI 24
2 SDO
ENA 23
3 OSC
4 VSD
5 NC
6 VS
7 REFH
8 REFL
9 GND
10 NC
11 CAP
12 NC
OUTA 22
OUTB 21
OUTC 20
OUTD 19
GND 18
OUTE 17
OUTF 16
OUTG 15
OUTH 14
NC 13
OSC 1
VSD 2
NC 3
VS 4
REFH 5
REFL 6
GND 7
THERMAL
TherPmAaDl Pad
19 OUTB
18 OUTC
17 OUTD
16 GND
15 OUTE
14 OUTF
13 OUTG
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.




EL5825IR-T13 pdf, 반도체, 판매, 대치품
Typical Performance Curves
INPUT CODE
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
10
VS=15V
VSD=5V
VREFH=13V
VREFL=2V
210 410 610 810 1010
FIGURE 1. DIFFERENTIAL NONLINEARITY vs CODE
7.2
7 VOUT=0V
VS (V)
6.8
6.6
6.4
6.2
6
5.8
5.6
4 6 8 10 12 14 16 18
FIGURE 3. SUPPLY CURRENT vs SUPPLY VOLTAGE
EL5825
VSD (V)
180
160
140
120
100
80
60
40
20
0
3 3.5 4 4.5 5 5.5
FIGURE 2. DIGITAL SUPPLY CURRENT vs DIGITAL SUPPLY
VOLTAGE
VS=VREFH=15V
M=400ns/DIV
0mA
5mA
5V
CL=1nF
RS=20
CL=180pF
5mA/DIV
CL=4.7nF
RS=20
200mV/DIV
FIGURE 4. TRANSIENT LOAD REGULATION (SOURCING)
VS=VREFH=15V
M=400ns/DIV
5mA
0mA
CL=1nF
RS=20
CL=4.7nF
RS=20
CL=180pF
FIGURE 5. TRANSIENT LOAD REGULATION (SINKING)
M=200µs/DIV
SCLK
SDA
ENA
OUTA
FIGURE 6. LARGE SIGNAL RESPONSE (RISING FROM 0V
TO 8V)
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EL5825IR-T13 전자부품, 판매, 대치품
Serial Timing Diagram
ENA
tHE tSE
SCLK
tSD
tHD
EL5825
T
tr
tf tHE
tSE
tw
SDI
B15 B14 B13 B12-B2 B1
B0
MSB
Load MSB first, LSB last
LSB
t
TABLE 2. SERIAL TIMING PARAMETERS
PARAMETER
EXAMPLE
DESCRIPTION
T
200ns
Clock Period
tr/tf
0.05 * T
Clock Rise/Fall Time
tHE
10ns
ENA Hold Time
tSE
10ns
ENA Setup Time
tHD
10ns
Data Hold Time
tSD
10ns
Data Setup Time
tW
0.50 * T
Clock Pulse Width
CONTROL
C1 C0
00
00
00
00
00
01
CHANNEL ADDRESS
A3 A2 A1 A0
X000
X000
X000
X011
X111
X111
D9
0
1
1
1
0
0
TABLE 3. SERIAL PROGRAMMING EXAMPLES
DATA
D8 D7 D6 D5 D4 D3 D2 D1 D0
000000000
111111111
000000000
000000001
000011111
000011111
CONDITION
Internal Oscillator, Channel A, Value = 0
Internal Oscillator, Channel A, Value = 1023
Internal Oscillator, Channel A, Value = 512
Internal Oscillator, Channel C, Value = 513
Internal Oscillator, Channel H, Value = 31
External Oscillator, Channel H, Value = 31
Internal Refresh Clock Oscillator
The EL5825 requires an internal clock or external clock to
refresh its outputs. The outputs are refreshed at the falling
OSC clock edges. The output refreshed switches open at
the rising edges of the OSC clock. The driving load shouldn’t
be changed at the rising edges of the OSC clock. Otherwise,
it will generate a voltage error at the outputs. This clock may
be input or output via the clock pin labeled OSC. The internal
clock is provided by an internal oscillator running at
approximately 25kHz and can be output to the OSC pin. In a
multiple chip system, if the driving loads are stable, one chip
may be programmed to use the internal oscillator; then the
OSC pin will output the clock from the internal oscillator.
Subsequent chips may have the OSC pin connected to this
clock source. In these chips, the program will set them to
external OSC Mode by setting bit 14 to 1. See the control
bits logic table and serial programming example for details.
For transient load application, the external clock Mode
should be used to ensure all functions are synchronized
together. The positive edge of the external clock to the OSC
pin should be timed to avoid the transient load effect. The
Application Drawing on page 10 shows the LCD H rate
signal used, here the positive clock edge is timed to avoid
the transient load of the column driver circuits.
After power on, the chip will start with the internal oscillator
mode. At this time, the OSC pin will be in a high impedance
condition to prevent contention. After programming the
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관련 데이터시트

부품번호상세설명 및 기능제조사
EL5825IR-T13

8-Channel TFT-LCD Reference Voltage Generator

Intersil Corporation
Intersil Corporation

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