CYW2338

12338\CYW2338 PRELIMINARY CYW2338 Dual Serial Input PLL with 2.5- and 1.1-GHz Prescalers Features Operating voltage 2.7V to 5.5V Operating frequency to 2.5 GHz on PLL1 and 1.1 GHz on PLL2 with prescaler ratios of 64/65 and 128/129 Lock detect feature Power-down mode ICC < 1 µA typical at 3.0V Serial data input accepts data clock rates as low as 1 kHz Low power/voltage operation with low current standby www.DataSheet4U.com mode On-chip reference oscillator Available in a 20-pin TSSOP (Thin Shrink Small Outline Package) Available in a 24-pin CSP (Chip Scale Package) Available in a 20-pin MLF (Mirco Lead Frame Package) Applications The Cypress CYW2338 is a dual serial input PLL frequency synthesizer designed for high performance dual conversion TV, VCR, and Set-top tuner sections, as well as downstream receivers for cable modems. The CYW2338 is also well suited for high-volume, low-cost wireless communications applications. One 2.5-GHz and 1.1-GHz prescaler, each with pulse swallow capability are included. The device operates from 2.7V and dissipates only 27 mW. Dual PLL Block Diagram FIN1 (5) FIN1# (6) Prescaler 64/65 or 128/129 GND (4) GND (7) VCC1 (1) VCC2 (20) VP1 (2) Binary 7-Bit Swallow Counter Binary 11-Bit Programmable Counter fp1 Phase Detector Charge Pump DOPLL1 (3) 19-Bit Latch OSC_IN (8) OSC_OUT (9) Latch Selector LE (13) DATA (12) CLOCK (11) Pwr-dwn PLL1 fr1 fr fp Monitor Output Selector 15-Bit Reference Counter 20-Bit Latch 20-B...