参数资料
| 型号： | EL4585CSZ-T13 |
| 厂商： | Intersil |
| 文件页数： | 13/15页 |
| 文件大小： | 0K |
| 描述： | IC GENLOCK HORZ 8FSC 16-SOIC |
| 标准包装： | 2,500 |
| 类型： | 锁相环路（PLL） |
| PLL： | 是 |
| 输入： | CMOS，TTL |
| 输出： | CMOS，TTL |
| 电路数： | 1 |
| 比率 - 输入:输出： | 3:1 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 36MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 5V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
7
FN7175.4
September 3, 2009
EL4585 Block Diagram
Description Of Operation
The horizontal sync signal (CMOS level, falling leading edge)
is input to HSYNC input (pin 10). This signal is delayed about
200ns, the falling edge of which becomes the reference to
which the clock output will be locked (See “Timing Diagrams”
on page 5). The clock is generated by the signal on pin 5,
OSC IN. There are 2 general types of VCO that can be used
with the EL4585, LC and crystal controlled. Additionally,
each type can be either built up using discrete components,
including a varactor as the frequency controlling element, or
complete, self contained modules can be purchased with
everything inside a metal can. These modules are very
forgiving of PCB layout, but cost more than discrete
solutions. The VCO or VCXO is used to regulate the clock.
An LC tank resonator has greater “pull” than a crystal
controlled circuit, but will also be more likely to drift over
time, and thus will generate more jitter. The “pullability” of the
circuit refers to the ability to pull the frequency of oscillation
away from its center frequency by modulating the voltage on
the control pin of the VCO module or varactor, and is a
function of the slope and range of the capacitance-voltage
curve of the varactor or VCO module used. The VCO signal
is sent to the CLK out pin, divided by two, then sent to the
divide by N counter. The divisor N is determined by the state
of pins 1, 2, and 16 and is described in Table 1. The divided
signal is sent, along with the delayed HSYNC input, to the
phase/frequency detector, which compares the two signals
for phase and frequency differences. Any phase difference is
converted to a current at the charge pump output, (pin 7). A
VCO with a positive frequency deviation with control voltage
must be used. Varactors have negative capacitance slope
with voltage, resulting in positive frequency deviation with
increasing control voltage for the oscillators in Figures 10
and 11.
VCO
The VCO should be tuned so that its frequency of oscillation
is very close to the required clock output frequency when the
voltage on the varactor is 2.5V. VCXO and VCO modules are
already tuned to the desired frequency, so this step is not
necessary if using one of these units. The output range of
the charge pump output (pin 7) is 0V to 5V, and it can source
or sink a maximum of about 300A, so all frequency control
must be accomplished with variable capacitance from the
FIGURE 6. POWER DISSIPATION vs AMBIENT
TEMPERATURE
FIGURE 7. POWER DISSIPATION vs AMBIENT
TEMPERATURE
Typical Performance Curves (Continued)
JEDEC JESD51-3 LOW EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
255075
100
125
150
AMBIENT TEMPERATURE (°C)
POW
E
R
D
ISSIP
A
TION
(
W
)
85
1.23W
0.91W
PDIP16
θJA = +81°C/W
SO16 (0.150”)
θJA = +110°C/W
1.43W
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.4
0.2
0
P
O
WE
R
DISS
IP
ATIO
N
(W
)
0.6
0
25
50
75
100
125
150
AMBIENT TEMPERATURE (°C)
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
1.25W
PDIP16
θJA = +70°C/W
SO16 (0.150”)
θJA = +80°C/W
EL4585
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EL4585CSZ-T7 | 功能描述:锁相环 - PLL EL4585CSZ HORIZONTAL GENLOCK RoHS:否 制造商:Silicon Labs 类型:PLL Clock Multiplier 电路数量:1 最大输入频率:710 MHz 最小输入频率:0.002 MHz 输出频率范围:0.002 MHz to 808 MHz 电源电压-最大:3.63 V 电源电压-最小:1.71 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:QFN-36 封装:Tray |
| EL-484ET | 功能描述:标准LED-通孔 Orange Translucent 625nm 4mcd RoHS:否 制造商:Vishay Semiconductors 照明颜色:Red 光强度:0.7 mcd 波长/色温:615 nm 显示角:45 deg 透镜颜色/类型:Clear, Non-Diffused 正向电流:70 mA 正向电压:1.83 V to 3.03 V LED 大小:2 mm 系列: 封装:Tube |
| EL-484GT | 功能描述:标准LED-通孔 Green Translucent 570nm 8mcd RoHS:否 制造商:Vishay Semiconductors 照明颜色:Red 光强度:0.7 mcd 波长/色温:615 nm 显示角:45 deg 透镜颜色/类型:Clear, Non-Diffused 正向电流:70 mA 正向电压:1.83 V to 3.03 V LED 大小:2 mm 系列: 封装:Tube |
| EL-484IT | 功能描述:标准LED-通孔 HI-EFF RED 625nm 4mcd RoHS:否 制造商:Vishay Semiconductors 照明颜色:Red 光强度:0.7 mcd 波长/色温:615 nm 显示角:45 deg 透镜颜色/类型:Clear, Non-Diffused 正向电流:70 mA 正向电压:1.83 V to 3.03 V LED 大小:2 mm 系列: 封装:Tube |
| EL-484YT | 功能描述:标准LED-通孔 Yellow Translucent 590nm 4mcd RoHS:否 制造商:Vishay Semiconductors 照明颜色:Red 光强度:0.7 mcd 波长/色温:615 nm 显示角:45 deg 透镜颜色/类型:Clear, Non-Diffused 正向电流:70 mA 正向电压:1.83 V to 3.03 V LED 大小:2 mm 系列: 封装:Tube |
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