EL4584CS-T13 Intersil, EL4584CS-T13 Datasheet - Page 9

• Manufacturer Part Number: EL4584CS-T13
• Description: IC GENLOCK HORZ 4FSC 16-SOIC
• Manufacturer: Intersil
• Type: Phase Lock Loop (PLL)r

Specifications of EL4584CS-T13

• Pll: Yes
• Input: Clock
• Output: CMOS, TTL
• Number Of Circuits: 1
• Ratio - Input:output: 3:1
• Differential - Input:output: No/No
• Frequency - Max: 36MHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 5V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Frequency-max: 36MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

The resistance needed will depend on VCO design or VCXO
module selection.
Applications Information
Choosing External Components
then:
For our example, C
for fine tuning). Examples for each frequency using the
internal divider follow.
Typical Application
Horizontal genlock provides clock for an analog to digital
converter, digitizing analog video.
C
C
F
C
1. To choose LC VCO components, first pick the desired
2. Choose a reasonable inductor value (10µH to 20µH
3. Calculate C
4. From the varactor data sheet find C
5. C
6. Calculate C
OSC
T
1
T
=
=
operating frequency. For our example, we will use
14.31818MHz, with an H
works well). We choose 15µH.
Equations 1 and 2.
=
lock voltage. C
example.
our example.
2
--------------------------------------------------------------------------- -
(
------------------------------------------------------------------------- -
(
-------------------- -
4π
C
=
C
should be about 10C
1
2
2
---------------------- -
2π LC
1
C
C
F
V
2
2
L
)
) C
1
–
+
(
C
=
C
(
T
1
T
C
2
1
---------------------------------------------------------------------
4π
2
C
1
using Equations 3 and 4. Since:
needed to produce F
C
C
C
T
V
2
2
T
1
C
V
(
C
)
= 23pF for our SMV1204-12, for
14.318e6
= 14pF (a trim capacitor may be used
)
V
–
V
+
(
C
(
C
FIGURE 11.
T
2
C
C
1
V
V
SYNC
V
, so we choose C
)
)
9
′
)′
2
(
15e 6
frequency of 15.734kHz.
–
OSC
V
)
@ 2.5V, the desired
=
, as shown in
8.2pF
2
= 220pF for
(EQ. 1)
(EQ. 2)
(EQ. 3)
(EQ. 4)
EL4584
NOTE: Use shielded inductors for optimum performance.
FREQUENCY
FREQUENCY
TABLE 3. LC VCO COMPONENT VALUES (APPROXIMATE)
TABLE 4. XTAL VCO COMPONENT VALUES
13.301
17.734
10.738
12.273
14.318
13.301
(MHZ)
(MHz)
14.75
14.75
13.5
13.5
(NOTE)
(APPROXIMATE)
FIGURE 13. TYPICAL XTAL VCO
FIGURE 12. TYPICAL LC VCO
(µH)
(kΩ)
300
300
300
R
L
15
15
12
12
22
18
15
1
1
(pF)
(pF)
C
C
18
17
18
10
20
17
14
15
15
15
1
1
0.001
0.001
0.001
(pF)
220
220
220
220
220
220
220
(µF)
C
May 9, 2008
C
2
2
FN7174.3