SY89538LHG Micrel Inc, SY89538LHG Datasheet - Page 15

• Manufacturer Part Number: SY89538LHG
• Description: IC SYNTH/BUFF LVPECL/LVDS 64TQFP
• Manufacturer: Micrel Inc
• Series: Precision Edge®r
• Type: Clock Synthesizer/Fanout Bufferr

Specifications of SY89538LHG

• Pll: Yes
• Input: CMOS, HSTL, LVDS, LVPECL, LVTTL, SSTL, Crystal
• Output: LVDS, LVPECL
• Number Of Circuits: 1
• Ratio - Input:output: 2:7
• Differential - Input:output: Yes/Yes
• Frequency - Max: 756MHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 2.375 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP Exposed Pad, 64-eTQFP, 64-HTQFP, 64-VQFP
• Frequency-max: 756MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-3240; SY89538LHG

Considerations when in zero delay mode:
June 2006
Min.
2.35
2.35
2.35
2.35
2.35
2.35
2.35
2.35
2.35
2.35
2.35
2.35
f
•
•
•
VCO
(MHz)
The input and output frequency range is
29.375MHz to 756MHz
The phase detector frequency range is
9.325MHz to 94.5MHz
There are cases in which certain divider
combinations at certain frequencies are
not valid, see Table 9 for more details
Max.
3.02
3.02
3.02
3.02
3.02
3.02
3.02
3.02
3.02
3.02
3.02
3.02
Divider
Post-
1
1
1
1
2
2
2
2
8
8
8
8
Divider
Pre-
2
3
4
5
2
3
4
5
2
3
4
5
588.0
392.0
294.0
235.0
294.0
196.0
147.0
118.0
Min.
73.4
49.0
36.7
29.4
f
OUT
(MHz)
Table 9. Zero Delay Divider Cases
755.0
503.0
378.0
302.0
378.0
252.0
189.0
151.0
Max.
94.4
62.9
47.2
37.8
588.0
392.0
294.0
235.0
294.0
196.0
147.0
118.0
Ref-Divider = 1
Min.
73.4
49.0
36.7
29.4
f
REF
(MHz)
15
755.0
503.0
378.0
302.0
378.0
252.0
189.0
151.0
Max.
94.4
62.9
47.2
37.8
•
•
•
294.0
196.0
147.0
117.5
147.0
Ref-Divider = 2
Min.
98.0
73.5
59.0
36.7
24.5
18.4
14.7
f
REF
Systematic phase offset is caused by added
and parasitic capacitance
Phase offset is introduced by increased trace
length
Phase offset second order effects can be
introduced with high ε
since the velocity of electromagnetic waves
slows down as the die-electric constant
increases
(MHz)
377.5
126.0
251.5
189.0
151.0
189.0
Max.
94.5
75.5
47.2
31.5
23.6
18.9
[e-mail]
147.0
Valid
Valid
Min.
98.0
73.5
58.8
73.5
49.0
36.8
29.5
18.4
12.3
Ref-Divider = 4
Not
Not
f
REF
(MHz)
188.8
125.8
Valid
Max.
94.5
75.5
94.5
63.0
47.3
37.8
23.6
15.7
11.8
Not
R
die-electric constants
or [phone]
M9999-062706-D
Valid
Valid
Valid
Valid
Min.
73.5
49.0
36.8
29.4
36.8
24.5
18.4
14.8
Ref-Divider = 8
Not
Not
Not
Not
f
REF
(MHz)
Valid
Valid
Valid
Max.
94.4
62.9
47.3
37.8
47.3
31.5
23.6
18.9
11.8
Not
Not
Not