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

The STW81102 includes an Integer-N frequency synthesizer and two fully integrated VCOs featuring low phase noise performance and a noise floor of -155 dBc/Hz.

The combination of wide frequency range VCOs (using center-frequency calibration over 32 subbands) and multiple output options (direct output, divided by 2 or divided by 4) allows coverage from 750 MHz to 905 MHz and 1000MHz to 1162.5 MHz, from 1500MHz to 1810 MHz and 2000 MHz to 2325MHz, from 3000 MHz to 3620 MHz and 4000MHz to 4650 MHz bands.

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

意法半導(dǎo)體是一個集成的射頻合成器STW81102和壓控振蕩器（VCO）。呈現(xiàn)出高性能、高集成度、低功耗、多頻段的性能，是一種低成本的單芯片STW81102替代PLL和VCO的離散解。

包含一個整數(shù)N分頻頻率合成器的STW81102和完全集成的壓控振蕩器具有低相位噪聲性能和噪聲地板- 155 dBc / Hz。

寬頻率范圍的壓控振蕩器的組合（32子帶采用中心頻率校準）和多個輸出選項（直接輸出，除以2或除以4）允許范圍從750兆赫至905兆赫和1162.5兆赫1000MHz，從近年來的1810兆赫和2000兆赫到2325mhz，從3000兆赫到3620兆赫，4000mhz 4650兆赫波段。

采用意法半導(dǎo)體的STW81102先進的0.35μm SiGe工藝。

Key Features

• 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)

• 3.3V power supply

• Power down mode (HW and SW)

• Small size exposed pad VFQFPN28 package 5x5x1.0mm

• Process: BICMOS 0.35μm SiGe

主要特點

頻率合成器

自動中心頻率校準的雙差分VCO的集成：3000 - 3620 MHz（直接輸出）4000 - 4650兆赫（直接輸出）1500 - 1810 MHz（2內(nèi)部分頻器）2000 - 2325 MHz（2內(nèi)部分頻器）750 - 905 MHz（4內(nèi)部分頻器）1000 - 1162.5 MHz（4內(nèi)部分頻器）

良好的綜合相位噪聲

快速鎖定時間：150

雙模量可編程分頻器（16 / 17或19 / 20）

2可編程計數(shù)器來實現(xiàn)反饋分頻比從256到65551（預(yù)分頻器的16 / 17）和從361到77836（預(yù)分頻器的19 / 20）。

可編程參考分頻器（10位）

相位頻率比較器和電荷泵

可編程電荷泵電流

數(shù)字鎖相檢測器

雙數(shù)字總線接口：SPI和I2C總線的3位可編程的地址（1100a2a1a0）

3.3V的電源

掉電模式（硬件和軟件）

小尺寸封裝5x5x1.0mm裸露焊盤vfqfpn28

0.35μm SiGe BiCMOS工藝