2100MHz Very Low Current Multi-Modulus Divider
SP8714 SP8714
2100MHz Very Low Current Multi-Modulus Divider
DS3562 - 5.1 April 1999
The SP8714 is a switchable divide...
Description
SP8714 SP8714
2100MHz Very Low Current Multi-Modulus Divider
DS3562 - 5.1 April 1999
The SP8714 is a switchable divide by 32/33, 64/65 programmable divider which is guaranteed to operate up to 2100MHz. It will operate from a supply of 2.7V to 5.25V and requires typically 6.8mA (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.
RF INPUT VCC RATIO SELECT OUTPUT
1 2 3 4 SP8714
8 7 6 5
RF INPUT POWER DOWN MODULUS CONTROL VEE
FEATURES s s s s s s s Operation to 2100MHz 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†
MP8
Fig. 1 Pin connections - top view
ORDERING INFORMATION
SP8714 IG MPAS Industrial Temperature Range Miniature Plastic SOIC Package SP8714 IG MPAC As above supplied on Tape and Reel
APPLICATIONS s Cellular Telephones s Cordless Telephones
†
ESD precautions must be observed
V CK 6 MC D
CC 2 250K NOMINAL
D TYPE
Q 7 POWER DOWN
3 RS V CC
BIAS CONTROL LOGIC
5 V EE
RF INPUT (CLOCK)
1
DIVIDE BY 4/5
8 V
DIVIDE BY 8 / 16
4 OUTPUT
EE
Fig. 2 Block diagram
1
SP8714
ABSOLUTE MAXIMUM RATINGS
Supply voltage (VEE=0V) (note 1) -0.5V to 7V Control and RF inputs, (note 1) -0.5V to VCC+0.5V RF output (VEE =0V) RF input current (note 1) 10mA Oper...
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