TB2118F_02 Datasheet, PDF (1/20 Pages) Toshiba Semiconductor – High Speed PLL For DTS

TOSHIBA Bi−CMOS Integrated Circuit Silicon Monolithic
TB2118F
High Speed PLL For DTS
TB2118F
TB2118F is a high−speed phase−locked loop (PLL) LSI for car
audio tuners with a built−in charge pump circuit. All functions
are controlled through serial bus lines. The device is used to
configure high−performance digital tuning systems.
Features
· Built−in high−speed program divider with built−in prescalers.
FM: 30~150MHz (pulse swallowing method)
AM: 1~40MHz (pulse swallowing method)
Weight: 0.31g (typ.)
· Phase comparator outputs are constant current output for both FM and AM. Current values can be switched
using serial data. In high−speed 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 low−pass filter constant.
· RDS supported
N−value data and charge pump output current data (total of 18−bits) can be selected using two resisters.
· Built−in low−pass filter op−amps for FM and AM.
· Built−in 20−bit binary counter for counting IF frequency.
· Crystal oscillator can be used 10.25MHz or 10.35MHz.
· Two output ports (open−collector 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.
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2002-10-30