MTV828

VHF/UHF Diversity Tuner IC for Digital TV

• Description

  The MTV828 is a highly integrated CMOS low-IF conversion Diversity tuner IC for multi-standard digital TV applications such as CMMB (UHF band), DVB-H, DVB-T, DAB, T-DMB, ATSC-M/H and ISDB-T (full-seg, mm and 1-seg). It has dual VHF and UHF RF frequency inputs. Each RF inputs can also operate wideband range from 76MHz to 862MHz. The building blocks include LNA, RFPGA, I/Q down conversion mixer, bandwidth adjustable low-pass filter, baseband PGA, IF up converter for low-IF interface, fractional-N frequency synthesizer with fully integrated VCO and PLL loop filter, and LDO. The on-chip low phase noise VCO, along with the high-resolution fractional-N frequency synthesizer makes in-band

• Features

  • Single-chip Diversity RFIC for multi-standard digital TV applications
  • VHF (76 MHz ~ 245 MH) and UHF (470 MHz ~ 862 MHz) for ISDB-T, DVB-T/H, ATSC-MH, CMMB, DAB and T-DMB
  • 90~798MHz supported for ISDB-T path through
  • Programmable Low-IF interface supporting
  • Low noise figure 3.0 dB
  • Typical AGC dynamic range: −102 dBm to +10 dBm
  • Low current consumption in diversity mode
  • Enhanced 3rd order blocker rejection performance using HRM(Harmonic Rejection Mixer)
  • One VCO core system using VCO core output sharing for 4Diverstiy function
  • On-chip features include
  • Fast switching fractional-N PLL
  • Low phase noise and wide frequency range VCO
  • Integrated PLL loop filter
  • Bandwidth-adjustable low-pass filter
  • Reference clock output for demodulators
  • Supply voltage: 1.8 V core and 1.8 ~ 3.3 V I/O
  • Minimal external components
  • Small 32-lead QFN package
  • RoHS compatible package

• Applications

  • Car Navigation and USB Applications, Low Power Portable TV, PDA, PMP
  • Digital TV for Mobile Phone
  • Combo (DVD, STB etc)