tda18219hn NXP Semiconductors, tda18219hn Datasheet - Page 8

• Manufacturer Part Number: tda18219hn
• Description: Silicon Tuner For Terrestrial And Cable Digital Tv Reception
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA18219HN_1
Objective data sheet
9.10 Power Level Detector (PLD)
9.11 I
9.6 Notch filter
9.7 IR mixer
9.8 LO generation
9.9 Thermometer
This block has been implemented in the IF filter to optionally provide additional robustness
against adjacent analog channels. It reduces the adjacent channel sound carrier level to
prevent overloading of IF output stage. The notch frequency is tracked with LPF settings.
The LOW IF concept needs complex signals that highly suppress the N + 1 image
channel thanks to image rejection calibration.
A single LC-VCO operating at 7 GHz is used within a fractional-N phase lock-loop to
generate the LO frequency. The clock reference signal is provided by a crystal oscillator
and can be provided to a demodulator through the crystal output buffer.
The thermometer can be used to indicate the junction temperature of the IC via I
for soldering check. Refer to
The power level indicator can be used to indicate the RF input signal strengths of the
received channel via I
operation.
The TDA18219HN is controlled via the two-wire I
device address (7-bit) and the R/W bit for selecting read or write mode. To be able to have
flexibility in the addresses within the I
selected depending on the voltage applied to address selection pin AS_XTSEL (pin 6) see
Table 28 “Pin AS_XTSEL
2
C-bus transceiver
2
Rev. 01 — 3 February 2010
C-bus. Refer to
decoding”.
Silicon Tuner for terrestrial and cable digital TV reception
Section 10.1.2
2
C-bus system, one of two possible addresses is
Section 10.1.4
for detailed description and operation.
2
C-bus. For programming, there is one
for detailed description and
TDA18219HN
© NXP B.V. 2010. All rights reserved.
2
C-bus
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