TRF3040

The TRF3040 is designed as one kind of integrated transmit modulator / synthesizer that can be used in 900-MHz analog and digital cellular telephones applications. ThisTRF3040 consists of a transmit intermediate frequency (TXIF) synthesizer and oscillator, a single-sideband suppressed carrier (SSBSC) converter, a direct conversion I/Q modulator, a variable gain amplifier (VGA) with a power amplifier (PA) driver, a main channel fractional-N synthesizer, an auxiliary channel synthesizer, a crystal oscillator reference buffer, and clock buffers in a small surface-mount package.

Features of the TRF3040 are:(1)2-GHz Main Synthesizer, Which Incorporates a Dual-Mode 32/33 and 64/65 Prescaler for Fractional-N Operation; (2)200-MHz Auxiliary Synthesizer, Which Incorporates an 8/9 Prescaler; (3)Separate Supply Terminals for Main and Auxiliary Charge Pumps; (4)Internal Compensation for Fractional Spurs; (5)Low Phase Noise; (6)Normal and Integral Charge Pump Outputs; (7)Fully Programmable Main and Auxiliary Dividers; (8)Serial Data Interface; (9)Direct I/Q Modulator; (10)Control Logic for Power-Down Modes; (11)Single-Sideband Suppressed Carrier (SSBSC) Converter to Generate TX Carrier; (12)200-MHz TXIF Synthesizer and Oscillator; (13)Variable Gain Amplifier (VGA) With 50 dB of Dynamic Range; (14)900-MHz Power Amplifier (PA) Driver With 9 dBm Typical Output Power; (15)Reference and Clock Buffers; (16)158 mA Typical Total Operating Current at 3.75 V Supply; (17)48-Pin Quad Flatpack (LQFP).

The absolute maximum ratings of the TRF3040 can be summarized as:(1)Power supply voltage range , VCCP, VDD, VDDA: -0.3 V to 4.5 V;(2)Voltage applied to any other terminal, VIN: -0.3 V to (Vcc+0.3) V;(3)Maximum operating junction temperature TJmax: 150°C;(4)Operating ambient temperature range: -40°C to 85 °C;(5)Storage temperature range: -65°C to 150 °C. If you want to know more information about TRF3040, please download the datasheet in www.seekic.com or www.chinaicmart.com .