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SN761662 Datasheet(PDF) 1 Page - Texas Instruments |
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SN761662 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 23 page www.ti.com FEATURES APPLICATIONS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 VLO OSC B VLO OSC C OSC GND VHI OSC B VHI OSC C UHF OSC B1 UHF OSC C1 UHF OSC C2 UHF OSC B2 IF GND IF OUT1 IF OUT2 VCC CP VTU P5/ADC XTAL1 XTAL2 XTALOUT UHF RF IN2 UHF RF IN1 VHI RF IN VLO RF IN BS4 RF GND MIXOUT2 MIXOUT1 NC BUS GND RF AGC AGC FIL2 AGC FIL1 BS3 BS2 BS1 SDA SCL AS DBT PACKAGE (TOP VIEW) P0034-02 DESCRIPTION SN761662 DTV TUNER IC SLES161 – NOVEMBER 2005 • Low-Phase-Noise Mixer/Oscillator and PLL Synthesizer • VHF-L, VHF-H, UHF Three-Band Local Oscillator • I2C Bus Protocol (Bidirectional Data Transmission) • 30-V Tuning Voltage Output • Four NPN-Type Band-Switch Drivers • One Auxiliary-Port, Five-Level ADC • RF AGC Detector Circuit • Crystal Oscillator Output • Programmable Reference Divider Ratio (24/28/50/64/80/128) • Standby Mode • 5-V Power Supply • 38-Pin TSSOP Package • Digital TV • Digital CATV • Set-Top Box The SN761662 is a low-phase-noise synthesized tuner IC designed for digital TV tuning systems. The circuit consists of a PLL synthesizer, three-band local oscillator and mixer, 30-V output tuning amplifier, four NPN band-switch drivers, and is available in a small-outline package. A 15-bit programmable counter and reference divider are controlled by I2C bus protocol. Tuning step frequency is selectable by this reference divider ratio for a crystal oscillator. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Número de pieza similar - SN761662_14 |
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Descripción similar - SN761662_14 |
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