Preliminary Product Preview
Dual Frequency Synthesizer
The ICS31202 is an integrated Dual Frequency Synthesizer
designed for RF Personal Communication systems requiring
two independent frequencies. It is one of the lowest cost and
smallest size solutions for 900MHz applications.
The ICS31202 contains two dual modulus prescalers. A 32/
33 prescaler can be selected for each RF synthesiz.eAr common
reference divider chain is included for required frequency
resolution. Combined with a high quality reference oscillator
and loop filter , the ICS31202 provides the tuning voltages
for the external VCO's to generate very stable, low noise RF
Local Oscillator signals. Serial data is transferred using a
three wire interface. ICS31202 allows synchronous loading
of counters via data line. Crystal inputs are in parallel mode.
The ICS31202 is fabricated using state-of-the art CMOS
process. It is available in a 16-pin 4.4mm TSSOP package
with 0.65mm pitch. The ICS31202 is a direct replacement
for Toshiba TB31202.
Smallest Size Dual RF Sythesizer in the market.
Integrated Dual PLL with prescalers
Dual Modulus Prescaler: 32/33
Provides excellent isolation between Tx, Rx signals.
Input frequency range of 200-600 MHz
2.7V to 4.5V operation
Software controlled Power Down Mode
Selectable charge pump current levels (100 to 800 µA)
Current consumption, 3mA per channel @ 2.7V/500MHz
Synchronous loading of counters
High Input sensitivity, 87-100dBµV (-24dBm)
16-pin TSSOP Package
900MHz Cordless telephone systems (DCT, ISM, PHS, CT2)
Personal communications systems (GSM, PDC, PCS)
Cellular telephone systems
CATV, Cable Modems
Other RF/wireless communication systems
FXIN (32N1 +A1) , D= 4 to 4068, N1 ≤ 4068, A1=0 to 31, Channel Spacing = 2x FXIN
FIN2 = FXIN (32N2 +A2) , D= 4 to 4068, N2 ≤ 4068, A2=0 to 31, Channel Spacing = 2x FXIN
ICS31202 Rev C 05/28/98
PRODUCT PREVIEW documents contain information on new
products in the sampling or preproduction phase of development.
Characteristic data and other specifications are subject to change