Product overview
Description
The STMicroelectronics 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 auto calibrating VCOs and an integer-N synthesizer, the STW82103B is suitable for both Rx and Tx requirements for Cellular infrastructure equipment.
The integrated RF balun and internal matching permit direct 50 ohm single-ended interface to RF port. The IF output is suitable for driving 200-ohm impedance filters.
By embedding a DAC with dual current output to drive an external PIN diode attenuator, the STW82103B replaces several costly discrete components and offers a significant footprint reduction.
The STW82103B device is designed with STMicroelectronics advanced 0.35 μm SiGe process. Its performance is specified over a -40 °C to +85 °C temperature range.
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All features
- High linearity:
- IIP3: +25 dBm
- 2FRF-2FLO spurious rejection: 80 dBc
- Noise figure:
- NF: 10.5 dB
- Conversion gain
- CG: 8 dB
- RF range: 2300 MHz to 2700 MHz
- Wide IF amplifier frequency range: 70 MHz to 400 MHz
- Integrated RF balun with internal matching
- Dual differential integrated VCOs with automatic center frequency calibration:
- LOA: 2200 to 2550 MHz
- LOB: 2500 to 3000 MHz
- Embedded integer-N synthesizer
- Dual modulus programmable prescaler (16/17 or 19/20)
- Programmable reference frequency divider (10 bits)
- Adjustable charge pump current
- Digital lock detector
- Excellent integrated phase noise
- Fast lock time: 150 μs
- Integrated DAC with dual current output
- Supply: 3.3 V and 5 V analog, 3.3 V digital
- Dual digital bus interface: SPI and I2C bus (fast mode) with 3 bit programmable address (1101A2A1A0)
- Process: 0.35 μm BICMOS SiGe
- Operating temperature range -40 to +85oC
- 44-lead exposed pad VFQFPN package 7x7x1.0 mm
- Applications
- Cellular infrastructure equipment:
- IF sampling receivers
- Digital PA linearization loops
- Other wireless communication systems.
- Cellular infrastructure equipment:
- High linearity:
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STMicroelectronics - STW82103B
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