TRF3520

The TRF3520 is designed as one kind of radio frequency (RF) modulator / amplifier that can be used in 900-MHz wireless global system for mobile communications (GSM) applications. This device combines a direct conversion RF in-phase/quadrature-phase (I/Q) modulator, a single-sideband suppressed carried (SSB) mixer, an RF filter, a power amplifier (PA) driver, a buffered voltage-controlled oscillator (VCO), and a serial interface into one small package.

Features of the TRF3520 are:(1)power amplifier driver; (2)independent power-up/-down functions; (3)3.75-V operation; (4)low current consumption; (5)serial data interface; (6)48-pin plastic quad flatpack (PFB); (7)modulation and upconversion from I/Q baseband to RF on single chip; (8)designed for GSM portable cellular telephones; (9)internal VCO and SSB mixer for transmit carrier generation; (10)internal RF filter for minimal external parts.

The absolute maximum ratings of the TRF3520 can be summarized as:(1)Supply voltage range Vcc: -0.3 V to 5.5 V;(2)Input voltage to any other pin VIN: -0.3 V to (Vcc+0.3) V;(3)Power dissipation, TA = 25°C, 48-pin PQFP: 600 mW;(4)Maximum operating junction temperature TJmax: 150°C;(5)Operating ambient temperature range: -40°C to 85 °C;(6)Storage temperature range: -65°C to 150 °C.

The electrical characteristics of this TRF3520 can be summarized as:(1)Frequency range: 141 to 247 MHz;(2)Output power: -20 to -15 dBm;(3)Phase noise: -110 dBc/Hz;(4)DC current (Active mode): 8 mA;(5)DC current (Standby mode): 10 uA;(6)Power-up time: 10 us;(7)Power-down time: 10 us. If you want to know more information about TRF3520, please download the datasheet in www.seekic.com or www.chinaicmart.com .