STW82103B is an integrated down converter providing 8 dB of gain, 10.5 dB NF, and a very high input linearity by means of its passive mixer. Embedding two wide band automatic center frequency calibration differential VCOs, dual modulus programmable prescaler (16/17 or 19/20), programmable reference frequency divider (10 bits), adjustable charge pump current, digital lock detector and fast lock time (150 µs).
The STMicroelectronics STW82103B is an integrated down converter providing 8 dB of gain and a noise figure of 10.5 dB. It features high linearity (IIP3: +25 dBm) and includes dual differential integrated VCOs with automatic center frequency calibration, suitable for both Rx and Tx requirements in cellular infrastructure.
The device embeds an integer-N synthesizer with a dual modulus programmable prescaler and a digital lock detector. It integrates an RF balun and internal matching to permit direct 50 ohm single-ended interface to the RF port. The STW82103B is designed using a 0.35 um SiGe process and operates over a temperature range of -40°C to +85°C.
| Input linearity (IIP3) | +25 dBm |
|---|---|
| Spurious rejection | 80 dBc |
| Noise figure (NF) | 10.5 dB |
| RF input range | 2300 MHz to 2700 MHz |
| IF amplifier frequency range | 70 MHz to 400 MHz |
| LOA frequency range | 2200 to 2550 MHz |
| LOB frequency range | 2500 to 3000 MHz |
| Supply voltage (Analog) | 3.3 V and 5 V |
| Supply voltage (Digital) | 3.3 V |
| Operating temperature range | -40 to +85°C |
| Package type | VFQFPN-44 |
It is suitable for cellular infrastructure equipment, specifically IF sampling receivers and digital PA linearization loops.
The device supports a dual digital bus interface consisting of SPI and I2C (fast mode).