TDA6650TT Datasheet, PDF (1/54 Pages) NXP Semiconductors – 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)

TDA6650TT; TDA6651TT
5 V mixer/oscillator and low noise PLL synthesizer for hybrid
terrestrial tuner (digital and analog)
Rev. 05 — 10 January 2007
Product data sheet
1. General description
The TDA6650TT; TDA6651TT is a programmable 3-band mixer/oscillator and low phase
noise PLL synthesizer intended for pure 3-band tuner concepts applied to hybrid (digital
and analog) or digital only terrestrial and cable TV reception.
Table 1. Different versions are available depending on the target application^[1]
Application
Type version
hybrid (analog and digital)
TDA6650TT/C3
TDA6651TT/C3
digital only
TDA6650TT/C3/S2
TDA6651TT/C3/S2
TDA6651TT/C3/S3
[1] See Table 22 “Characteristics” for differences between TDA6651TT/C3/S2 and TDA6651TT/C3/S3.
The device includes three double balanced mixers for low, mid and high bands, three
oscillators for the corresponding bands, a switchable IF amplifier, a wideband AGC
detector and a low noise PLL synthesizer. The frequencies of the three bands are shown
in Table 2. Two pins are available between the mixer output and the IF amplifier input to
enable IF filtering for improved signal handling and to improve the adjacent channel
rejection.
Table 2. Recommended band limits in MHz
Band
RF input
Min
Max
PAL and DVB-T tuners for hybrid application^[1]
Low
44.25
157.25
Mid
157.25
443.25
High
443.25
863.25
DVB-T tuners for digital only application^[2]
Low
47.00
160.00
Mid
160.00
446.00
High
446.00
866.00
Oscillator
Min
83.15
196.15
482.15
83.15
196.15
482.15
Max
196.15
482.15
902.15
196.15
482.15
902.15
[1] RF input frequency is the frequency of the corresponding picture carrier for analog standard.
[2] RF input frequency is the frequency of the center of DVB-T channel.
The IF amplifier is switchable in order to drive both symmetrical and asymmetrical
outputs. When it is used as an asymmetrical amplifier, the IFOUTB pin needs to be
connected to the supply voltage V_CCA.