SP8715
SP8715
1100MHz Very Low Current Multi-Modulus Divider
DS3830
Issue 4.2
September 1999
Features
Odering Information
G
G
G
G
G
G
G
Operation to 1100MHz
Very Low Power
Single Supply Operation 2.7V to 5.25V
Power Down Facility for Battery Economy
Latched Modulus Control Input
Push Pull Output Drive
ESD Protection on All Pins
†
SP8715/IG/MPAS Industrial Temperature Range
Miniature Plastic SOIC Package
SP8715/IG/MPAC As Above supplied on Tape
and Reel
Description
Applications
G
G
G
Cellular Telephones
Cordless Telephones
Mobile Radio
†
The SP8715 is a switchable divide by 64/65, 128/129
programmable divider which is guaranteed to operate up
to 1100MHz. It will operate from a supply of 2.7V to 5.25V
and requires typically 3.6mA (including the output current).
It also features a power down facility for battery economy.
The RF inputs are internally biased and should be
capacitively coupled to the signal source. The output is
designed to interface with CMOS synthesisers.
ESD precautions must be observed
V
CK
6
MC
D
2
Q
CC
D TYPE
BIAS
7
POWER
DOWN
3
RS
V
CC
250K
5
V
EE
CONTROL
LOGIC
NOMINAL
RF
INPUT
(CLOCK)
1
DIVIDE BY
4/5
8
V
DIVIDE BY
16 / 32
4
OUTPUT
EE
Figure 1 Block Diagram
1