2

SP8782A & B

Electrical Characteristics

Unless otherwise stated, the Electrical Characteristics are guaranteed over the specified supply, frequency and

temperature range.

Supply Voltage

Temperature Tamb= -55°C to +125°C, (SP8782A), -40°C to +85° C (SP8782B)

Characteristic

Pin

Value

Conditions

Min

Max

Units

Maximum frequency

2, 3

1

GHz

Input = 200-1200mVp-p

(sinewave input)

Minimum frequency

2, 3

50

MHz

Input = 400-1200mVp-p

Min Slew rate for low frequency operation

2, 3

100

V/

µs

Power Supply current, I

CC

8

60

mA

Output unloaded, V

Output low voltage

7

0

1.7

V

Output high voltage

7

V

V

CC

V

Modulus control input high voltage

5

0.7V

CC

V

CC

V

At driver end of 3k

Ω resistor

Modulus control input low voltage

5

0

0.3V

CC

V

At driver end of 3k

Ω resistor

Modulus control input high current

5

0.6

1.2

mA

Via 3k

Ω resistor to V

CC

Modulus control input low current

5

-0.6

-1.2

mA

Via 3k

Ω resistor to V

CC

Ratio select input high voltage

1

0.6V

CC

V

CC

V

Ratio selected input low voltage

1

0

0.4V

CC

V

Ratio select input current

1

-10

10

µA

Clock to output propagation Delay

2,3,7

3

ns

Set-up time, t

s

5,7

3

ns

See note 1 and Fig. 3a

Release time,t

r

5,7

3

ns

See note 2 and Fig. 3b

modulus control input and the next L

→H output transition to ensure that the ÷ 16 (32) mode is obtained.

control input and the next L

→H output transition to ensure that the ÷ 17 (33) mode is obtained.

Figure 2 Typical Pin Connections

DG 8

RATIO SELECT

CLOCK INPUT

CLOCK INPUT

OUTPUT

NC

MODULUS CONTROL

1

2

3

4

8

7

6

5

MP 8

OUTPUT

NC

MODULUS CONTROL

1

2

3

4

8

7

6

5

RATIO SELECT

CLOCK INPUT

CLOCK INPUT