STV4100 Ultra-compact low-power 3.3-V terrestrial tuner IC Data Brief Features Description ! RF-to-baseband direct conversion (IQ interface only) ! Single 3.3-V DC supply The STV4100 terrestrial tuner is a directconversion (zero-IF) receiver with quadrature outputs intended for digital TV broadcasting. ! 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 component count ! Low power consumption (625 mW typical) ! Temperature range -10° C to 70° C ! Crystal frequency output to drive the demodulator IC ! Compatible with 5-V and 3.3-V I2C bus ! Fully Nordig Unified (versions 1.0.2, 1.0.3, 2.0) compliant ! DTG (D-Book) compliant ! Digitenne compliant ! VFQFPN-32 5x5x1 mm3, exposed pad down ! ECOPACK, environmentally-friendly package, RoHS (2002/95/EC) compliant. 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 comparison 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. Typical applications ! Terrestrial set-top box ! iDTV ! PCTV BBAGC RFAGC VHF_IN BBIP BBIN UHF_IN BBQP BBQN PLL, dividers XTI, XTO FREF March 2009 DC offset compensation I2C Bus Interface Amplifier Rev 1 For further information contact your local STMicroelectronics sales office. SCL SDA 1/7 www.st.com 7 Applications 1 STV4100 Applications The STV4100 DVB-T tuner is designed to match optimally to industry-leading STMicroelectronics demodulator ICs such as the STV0362. Figure 1. Applications diagram for DVB-T system STV4100 DVB-T tuner SDA, SCL BBAGC STV0362 I2 C SDA,SCL SDAT,SCLT AGC_IF VHFN/P BBIN,BBIP Diplexer IM,IP UHFN/P BBQN,BBQP QM,QP FREF XTAL_I RFAGCO 16 to 31 MHz RF_LEVEL 2/7 D[7:0], CLKOUT, STROUT, D/PN, ERROR AUX_CLK I2 C Decoder STV4100 Applications Applications diagram without loop-through STV4100 Figure 2. 3/7 Applications Applications diagram with loop-through (simplified) STV4100 Figure 3. STV4100 4/7 STV4100 2 Ordering information Ordering information Table 1. Ordering information Order code Temperature range Package Packaging STV4100B -10 to 70° C VFQFPN-32 exposed pad down Tray STV4100BT -10 to 70° C VFQFPN-32 exposed pad down Tape and reel 5/7 Revision history 3 STV4100 Revision history Table 2. 6/7 Document revision history Date Revision 18-Mar-2009 1 Changes Initial release. STV4100 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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