1GHz 16/17/ 32/33 Multi-Modulus Divider
SP8782A & B
SP8782A & B
1GHz ÷ 16/17, ÷32/33 Multi-Modulus Divider
DS3651 Issue 2.4 June 1999
Features
q q q q
Advanc...
Description
SP8782A & B
SP8782A & B
1GHz ÷ 16/17, ÷32/33 Multi-Modulus Divider
DS3651 Issue 2.4 June 1999
Features
q q q q
Advanced Resynchronisation techniques to negate loop delay effects CMOS compataible output capability Multi-Modulus division Available as DESC SMD 5962-9208901MPA
Odering Information
SP8782 A DG SP8782 B MP DES9208901/AC/DGAZ(SMD)
Description
The SP8782 is a multi-modulus divider which divides by 16/ 17 when the Ratio Select input is low and by 32/33 when theRatio Select input is high. When high, the modulus Control input selects the lower division ratio (16 or 32) and the higher ratio (17 or 33) when it is low. The device uses resynchronisation techniques to reduce the effects of propagation delays in frequency synthesis. The SP8782A (ceramic DIL package) is characterised over the full military temperature range of -55°C to +125°C, the SP8782B (miniature plastic DIL package) over the industrial range of -40°C to+85°C.
Absolute Maximum Ratings
Supply Voltage Clock input level Junction temperature Storage temperature range: SP8782A SP8782B 6V 2.5V p-p +175°C -55°C to +150°C -55°C to +125°C
RATIO SELECT 1
VCC 2
CLOCK INPUT CLOCK INPUT
2 3 ÷ 16/17 ÷ 32/33 7 OUTPUT
4 VEE
5 MODULUS CONTROL INPUT
Figure 1 Functional Diagram
1
SP8782A & B
RATIO SELECT CLOCK INPUT CLOCK INPUT VEE
1 2 3 4
8 7 6 5
VCC OUTPUT NC MODULUS CONTROL
DG 8
RATIO SELECT CLOCK INPUT CLOCK INPUT VEE 1 2 3 4 8 7 6 5 VCC OUTPUT NC MODULUS CONTROL
MP 8
Figure 2 Typical Pin Connections
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