(China (Mainland))
Product Summary
The TSA5521M/C4 is a single-chip PLL frequency synthesizer designed for TV and VCR tuning systems. The circuit consists of a divide-by-eight prescaler with its own preamplifier, a 15-bit programmable divider, a crystal oscillator and its programmable reference divider and a phase/frequency detector combined with a charge-pump which drives the tuning amplifier and the 33 V output. Four high-current PNP band switch buffers are provided for band switching. Two PNP buffers can be switched on simultaneously. The sum of the collector currents is limited to 50 mA.
Parametrics
TSA5521M/C4 absolute maximum ratings: (1)supply voltage; +5 V (pin 3): -0.3 to +6.0 V; (2)band switch supply voltage; +12 V (pin 4): -0.3 to +16 V; (3)prescaler input voltage: -0.3 to VCC1 V; (4)charge-pump output voltage (pin 9): -0.3 to VCC1 V; (5)output tuning voltage (pin 10): -0.3 to +35 V; (6)input switching voltage (pin 11): -0.3 to VCC1 V; (7)lock output voltage (pin 12): -0.3 to VCC1 V; (8)serial clock input voltage (pin 13): -0.3 to +6.0 V; (9)serial data input/output voltage (pin 14): -0.3 to +6.0 V; (10)serial data output current: -1 to +10 mA; (11)storage temperature: -40 to +150℃; (12)maximum junction temperature: +150℃.
Features
TSA5521M/C4 features: (1)Complete 1.3 GHz single chip system; (2)Four PNP band switch buffers (40 mA); (3)33 V output tuning voltage; (4)In-lock detector; (5)15-bit programmable divider; (6)Programmable reference divider ratio (512, 640 or 1024); (7)Programmable charge-pump current (60 or 280 μA); (8)Varicap drive disable.
Diagrams
