SP8630 Plessey Semiconductors, SP8630 Datasheet - Page 4

• Manufacturer Part Number: SP8630
• Description: Prescaler 600MHz/10
• Manufacturer: Plessey Semiconductors

OPERATING NOTES
1. The clock input (pin 10) should be capacitively coupled to the
signal source. The input signal path is completed by connecting
a capacitor from the internal bias decoupling, pin 12, to ground.
2. The circuit will operate down to DC but slew rate must be better
than 100V/ s.
INPUT
TO SAMPLING
GENERATOR
INPUT FROM
SCOPE
1n
15k
1n
10
12
Fig. 6 Typical application showing interfacing
33
400
33
20
Fig. 5 Test circuit
1n
1n
10
12
1n
BIAS
13
DIVIDE BY
1n
DUT
7
3. The output is compatible with ECLll. There is an internal load of
3k at the output. The output can be interfaced to ECLlll/10K by
the addition of 1·5k to the output to increase the output voltage
swing.
4. Input impedance is a function of frequency, see Fig. 4.
5. All components should be suitable for the frequency in use.
14
7
10
1n
4
450
14
3k
1n
4
TO SAMPLING
V
OUTPUT
EE
SCOPE
1·5k
ECL OUTPUT
25·2V
SP8630
3