STW81100

STW81100 MULTI-BAND RF FREQUENCY SYNTHESIZER WITH INTEGRATED VCOS DATASHEET 1 ■ ■ Features Figure 1. Package Integer-N Frequency Synthesizer Dual differential integrated VCOs with automatic center frequency calibration: – Direct Output: 3280 – 3900 MHz www.DataSheet4U.com 3800 – 4400 MHz – Internal divider by 2: 1640 – 1950 MHz 1900 – 2200 MHz – Internal divider by 4: 820 – 975 MHz 950 – 1100 MHz ■ ■ VFQFPN28 Table 1. Order Codes Part Number STW81100AT STW81100ATR Package VFQFPN28 VFQFPN28 in Tape & Reel ■ ■ ■ ■ ■ Fast lock time: 150µs Dual modulus prescaler (64/65) and 2 programmable counters to achieve a feedback division ratio from 4096 to 32767. Programmable reference frequency divider (9 bits) Phase frequency comparator and charge pump Programmable charge pump current Digital Lock Detector I2C bus interface with 3 bit programmable address (1100A2A1A0) 3.3V Power Supply Power down mode Small size exposed pad VFQFPN28 package 5x5x1.0mm Process: BICMOS 0.35µm SiGe tors (VCOs). Showing high performance, high integration, low power, and multi-band performances, STW81100 is a low cost one chip alternative to discrete PLL and VCOs solutions. STW81100 includes an Integer-N frequency synthesizer and two fully integrated VCOs featuring low phase noise performance and a noise floor of -153dBc/Hz. The combination of wide frequency range VCOs (thanks to center-frequency calibration over 32 sub-bands) and multiple output options (direct output, divided by 2 or divided by 4) ...