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STV4100B bảng dữ liệu(PDF) 1 Page - STMicroelectronics |
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STV4100B bảng dữ liệu(HTML) 1 Page - STMicroelectronics |
1 / 7 page Data Brief For further information contact your local STMicroelectronics sales office. March 2009 Rev 1 1/7 7 STV4100 Ultra-compact low-power 3.3-V terrestrial tuner IC Features ! 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 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. Description The STV4100 terrestrial tuner is a direct- conversion (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 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 PLL, dividers Amplifier VHF_IN BBIP I2C Bus Interface BBIN BBQP BBQN BBAGC SCL XTI, XTO SDA DC offset compensation FREF RFAGC UHF_IN www.st.com |
Số phần tương tự - STV4100B |
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Mô tả tương tự - STV4100B |
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