STV4100 Datasheet | STMicroelectronics

Ultra-pact low-power 3.3-V terrestrial tuner IC Data Brief Features ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Description The STV4100 terrestrial tuner is a directconversion (zero-IF) receiver with quadrature outputs intended for digital TV broadcasting. On each VHF and UHF input is a low noise amplifier with both switchable and variable gain to ensure an optimal signal level for the two mixers. Each mixer, which down-converts the signal to baseband, is followed by a low-pass filter and amplifier. The baseband gain is programmable via a dedicated pin. The LO signals are provided by an integrated PLL which contains an on-chip voltage controlled oscillator meeting stringent phase noise requirements. The LO frequencies are programmable. The parison frequency for the phase/frequency detector is generated by dividing the crystal oscillator reference frequency. The crystal frequency can be from 16 MHz to 31 MHz depending on application. RF-to-baseband direct conversion (IQ interface only) Single 3.3-V DC supply Input frequency range 174 to 230 MHz and 470 to 870 MHz Fully integrated VCO Harmonic rejection mixer stage Fully integrated RF AGC with RF power monitoring Programmable channel filter covers 6 to 8 MHz channel spacing Low external ponent count Low power consumption (625 m W typical) Temperature range -10° C to 70° C Crystal frequency output to drive the demodulator IC patible with 5-V and 3.3-V I2C bus Fully Nordig Unified (versions 1.0.2, 1.0.3, 2.0) pliant DTG (D-Book) pliant Digitenne pliant VFQFPN-32 5x5x1 mm3, exposed pad down ECOPACK, environmentally-friendly package, Ro HS (2002/95/EC) pliant. Typical applications ! ! ! Terrestrial set-top box i DTV PCTV RFAGC VHF_IN UHF_IN PLL, dividers DC offset pensation I2C Bus Interface BBAGC BBIP BBIN BBQP BBQN .. XTI, XTO FREF Amplifier SCL SDA March 2009 Rev 1 1/7 .st. 7 For further information contact your local STMicroelectronics sales office. Applicati...