SP8715
SP8715
1100MHz Very Low Current Multi-Modulus Divider
Features
G Operation to 1100MHz
G Very Low Power
G Single Supply Operation 2.7V to 5.25V
G Power Down Facility for Battery Economy
G Latched Modulus Control Input
G Push Pull Output Drive
G ESD Protection on All Pins†
Applications
G Cellular Telephones
G Cordless Telephones
G Mobile Radio
† ESD precautions must be observed
DS3830
Issue 4.2
September 1999
Odering Information
SP8715/IG/MPAS Industrial Temperature Range
Miniature Plastic SOIC Package
SP8715/IG/MPAC As Above supplied on Tape
and Reel
Description
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.
6
MC
3
RS
RF
1
INPUT
(CLOCK)
8
CK
D
D TYPE Q
CONTROL
V
CC
LOGIC
VCC
2
BIAS
7 POWER
DOWN
250K 5
NOMINAL VEE
DIVIDE BY
4/5
DIVIDE BY
16 / 32
V
EE
4
OUTPUT
Figure 1 Block Diagram
1