NJ88C33 Datasheet, PDF (1/14 Pages) Mitel Networks Corporation – Frequency Synthesiser (I2C BUS Programmable)

NJ88C33
Frequency Synthesiser (I²C BUS Programmable)
Advance Information
DS2429 - 3.2 September 1994
The NJ88C33 is a synthesiser circuit fabricated on Zarlink
Semiconductor's 1.4 micron CMOS process, assuring very
high performance. It is I²C compatible and can also be
programmed at up to 5MHz. It contains a 16-bit R counter, a
12-bit N counter and a 7-bit A counter.
A digital phase comparator gives improved loop stability
with current source outputs to reduce loop components. A
voltage doubler is provided for the loop driver to improve
control voltage range to the VCO when operating at low supply
voltages.
DP14
FEATURES
s Easy to Use
s Low Power Consumption (15mW)
s Single Supply 2.5V to 5.5V
s Digital Phase Comparator with Current Source
Outputs
s Serial (I²C Compatible) Programming, 5MHz max
s Channel Loading in 8µs
s 150MHz Input Frequency Without Prescaler at 4.5V
(52MHz at 2.7V)
s Standby Modes
s Use of Two-Modulus Prescaler is Possible
APPLICATIONS
s Cordless Telephones (CT2, DECT)
s Cellular Telephones (GSM, PCN, ETACS)
s Hand Held Marine Radios
s Sonarbuoys
s Video Clock generators
MP14
Fig.1 Pin connections (not to scale) - top views
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V_DD
Input voltage, V_IM1
Output voltage on pin 13, V_IM2
Storage temperature, T_stg
-0.3V to 7V
-0.3 to V_DD +0.3V
-V_DD to 0V
-55°C to +125°C
ORDERING INFORMATION
NJ88C33 MA DP (Industrial - Plastic DIL package)
NJ88C33 MA MP (Industrial - Miniature Plastic DIL package)
Fig.2 Simplified block diagram of NJ88C33