STW81102

Datasheet | Orderable Products | Features and Description | Technical Documents

Reference	Filesize	Pages	Last Updated
STW81102	1080 K	48	14/08/2007

Device	Status	Package	Purchase
STW81102AT	Active	VFQFPN2 5x5x1.0 28 PITCH 0.5	Yes

	Integer-N frequency synthesizer
	Dual differential integrated VCOs with automatic center frequency calibration: – 3000 - 3620 MHz (Direct output) – 4000 - 4650 MHz (Direct output) – 1500 - 1810 MHz (Internal divider by 2) – 2000 - 2325 MHz (Internal divider by 2) – 750 - 905 MHz (Internal divider by 4) – 1000 - 1162.5 MHz (Internal divider by 4)
	Excellent integrated phase noise
	Fast lock time: 150μs
	Dual modulus programmable prescaler (16/17 or 19/20)
	2 programmable counters to achieve a feedback division ratio from 256 to 65551 (prescaler 16/17) and from 361 to 77836 (prescaler 19/20)
	Programmable reference frequency divider (10 bits)
	Phase frequency comparator and charge pump
	Programmable charge pump current
	Digital lock detector
	Dual digital bus interface: SPI and I2C bus with 3 bit programmable address (1100A2A1A0)
	3.3 V power supply
	Power down mode (HW and SW)
	Small size exposed pad VFQFPN28 package 5x5x1.0 mm
	Process: BICMOS 0.35μm SiGe

The STMicroelectronics STW81102 is an integrated RF synthesizer with voltage controlled oscillators (VCOs). Showing high performance, high integration, low power, and multi-band performances, STW81102 is a low cost one chip alternative to discrete PLL and VCOs solutions.

STW81102 includes an Integer-N frequency synthesizer and two fully integrated VCOs featuring low phase noise performance and a noise floor of -154 dBc/Hz. The combination of wide frequency range VCOs (thanks to centerfrequency calibration over 32 sub-bands) and multiple output options (direct output, divided by 2 or divided by 4) allows to cover from 750 to 905 MHz and 1000 to 1162.5 MHz, from 1500 to 1810 MHz and 2000 to 2325 MHz, from 3000 to 3620 MHz and 4000 to 4650 MHz bands.

The STW81102 is designed with STMicroelectronics advanced 0.35μm SiGe process.

Reference	Filesize	Pages	Last Updated
STW81102	1080 K	48	14/08/2007

Application Notes

Reference Filesize Pages Last Updated AN2452 1358 K 18 14/08//2007 AN2491 155 K 32 13/08//2007