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TB2118FG Datasheet, PDF (1/20 Pages) Toshiba Semiconductor – High Speed PLL For DTS | |||
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TOSHIBA BiâCMOS Integrated Circuit Silicon Monolithic
TB2118FG
High Speed PLL For DTS
TB2118FG
TB2118FG is a highâspeed phaseâlocked loop (PLL) LSI for car
audio tuners with a builtâin charge pump circuit. All functions
are controlled through serial bus lines. The device is used to
configure highâperformance digital tuning systems.
Features
⢠Builtâin highâspeed program divider with builtâin prescalers.
Weight: 0.31g (typ.)
FM: 30~150MHz (pulse swallowing method)
AM: 1~40MHz (pulse swallowing method)
⢠Phase comparator outputs are constant current output for both FM and AM. Current values can be switched
using serial data. In highâspeed mode for large current output seek, the lockup time between FM band edges
can be set to approx. 500µs by selecting an appropriate VT range and lowâpass filter constant.
⢠RDS supported
Nâvalue data and charge pump output current data (total of 18âbits) can be selected using two resisters.
⢠Builtâin lowâpass filter opâamps for FM and AM.
⢠Builtâin 20âbit binary counter for counting IF frequency.
⢠Crystal oscillator can be used 10.25MHz or 10.35MHz.
⢠Two output ports (openâcollector output) and two I / O ports (CMOS) supported.
⢠Package is SSOP 24 pin.
(Note) Pins 1 and 24 are susceptible to surge. Take care when handling.
1
2006-04-12
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