PDF TEF6621 Data sheet ( Hoja de datos )

Número de pieza	TEF6621
Descripción	Tuner on main-board IC
Fabricantes	NXP Semiconductors
Logotipo
Hay una vista previa y un enlace de descarga de TEF6621 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas
No Preview Available ! TEF6621 Tuner on main-board IC Rev. 01.04 — 7 August 2008 Objective data sheet 1. General description The TEF6621 is an AM/FM radio including Phase-Locked Loop (PLL) tuning system. The system is designed in such a way, that it can be used as a world-wide tuner covering common FM and AM bands for radio reception. All functions are controlled by the I2C-bus. Besides the basic feature set it provides a good weak signal processing function. 2. Features I FM tuner for Japan, Europe and US reception I AM tuner for Long Wave (LW) and Medium Wave (MW) reception I Integrated AM Radio Frequency (RF) selectivity I Integrated PLL tuning system; controlled via I2C-bus I Fully integrated Local Oscillator (LO) I No alignment needed I Very easy application on the main board I No critical RF components I Fully integrated Intermediate Frequency (IF) ﬁlters and FM stereo decoder I Fully integrated FM noise blanker I Field strength (LEVEL), multipath [Wideband AM (WAM)] and noise [UltraSonic Noise (USN)] dependent stereo blend I Field strength (LEVEL), multipath (WAM) and noise (USN) dependent High-Cut Control (HCC) I Field strength (LEVEL), multipath (WAM) and noise (USN) dependent soft mute I Single power supply Free Datasheet http://www.datasheet4u.com/ 1 page NXP Semiconductors TEF6621 Tuner on main-board IC Table 3. Pin description …continued Symbol Pin Description SDA 19 I2C-bus data input and output VREF 20 reference voltage decoupling VREGSUP 21 supply voltage internal voltage regulators VCC1 GND 22 supply voltage 1 23 ground VCODEC 24 decoupling for Voltage-Controlled Oscillator (VCO) supply voltage PLL 25 PLL tuning voltage PLLREF 26 PLL reference voltage TEST 27 test pin; leave open in normal operation AMSELIN1 28 AM selectivity input 1 AMSELIN2 29 AM selectivity input 2 AMIFAGC1 30 AM IF AGC 1 AMSELOUT1 31 AM selectivity output 1 AMSELOUT2 32 AM selectivity output 2 7. Functional description 7.1 FM tuner The RF input signal is mixed to a low IF with inherent image suppression. The IF signal is ﬁltered and demodulated. The complete signal path is fully integrated. 7.2 AM tuner The RF signal is ﬁltered and mixed to a low IF with inherent image suppression. The IF signals are ﬁltered and demodulated. The signal path is highly integrated. 7.3 PLL tuning system The PLL tuning system includes a fully integrated VCO. To avoid problems with unwanted signals on image side, the receiver controls automatically high-side or low-side injection. 7.4 FM stereo decoder The MPX signal from the FM tuner is translated by the stereo decoder into a left and right audio channel. Good channel separation is achieved without alignment. 7.5 Weak signal processing and noise blanker The reception quality of the station received is measured by a combination of detectors: ﬁeld strength (LEVEL), multipath (WAM) and noise (USN). The audio processing functions soft mute, HCC and stereo blend are controlled accordingly to maintain the best possible audio quality in case of poor signal conditions. Audio disturbances like e.g. ignition noise are suppressed by the noise blanker circuit, using USN detection on MPX and spike detection on the level signal. TEF6621_1 Objective data sheet Rev. 01.04 — 7 August 2008 © NXP B.V. 2008. All rights reserved. 5 of 58 Free Datasheet http://www.datasheet4u.com/ 5 Page NXP Semiconductors TEF6621 Tuner on main-board IC Table 60. Dynamic characteristics …continued VCC = 8.5 V; Tamb = 25 °C; unless otherwise speciﬁed. FM condition: all RF voltages refer to an unterminated RMS voltage with a source impedance 75 Ω; fmod = 1 kHz, ∆f = 22.5 kHz, de-emphasis = 50 µs, fRF = 97.1 MHz; unless otherwise speciﬁed. AM condition: all RF voltages are RMS values measured at the input of a 15 pF/60 pF dummy aerial; fmod = 400 Hz, m = 30 %, fRF = 990 kHz; unless otherwise speciﬁed. All values measured in a test circuit according to Figure 29; default settings; audio signals measured at LOUT and ROUT with IEC tuner ﬁlter (200 Hz to 15 kHz; IEC 60315-4); unless otherwise speciﬁed. Symbol Parameter Conditions Min Typ Max Unit (S+N)/N signal plus noise-to-noise Vi(RF) = 10 mV ratio 50 56 - dB fIF αimage Bﬂtr(IF) Sstat Vi(RF)(max) IF frequency image rejection IF ﬁlter bandwidth static selectivity maximum RF input voltage fRF(image) = fRF(wanted) ± 2 × fIF −3 dB bandwidth ftune ± 10 kHz ftune ± 20 kHz THD = 10 %; m = 80 %; active antenna 50 Ω - 25 - 40 55 - 5 6.5 8 40 48 - 65 78 - 120 135 - kHz dB kHz dB dB dBµV IP2 second-order intercept point 150 170 - dBµV IP3 third-order intercept point ∆f = 40 kHz 116 127 - dBµV AM LNA and AM RF AGC; input pins AMRFIN and AMRFDEC Ri input resistance fRF = 990 kHz Ci input capacitance AGC maximum gain MW band with passive antenna (measured with dummy aerial 15 pF/60 pF) - [1][2] - 20 - 530 - Ω pF Vi(RF)AGC AGC RF input voltage switched LNA AGC: Vi(RF) value, at which the LNA gain decreases with increasing Vi(RF); m = 0 %; start of AGC; ﬁrst step 110 113 116 dBµV Vi(RF)AGC(hys) hysteresis of AGC RF input voltage hysteresis of AGC start 147 dB MW band with active antenna (measured with dummy aerial 50 Ω) Vi(RF)AGC AGC RF input voltage switched LNA AGC: Vi(RF) value, at which the LNA gain decreases with increasing Vi(RF); m = 0 %; start of AGC; ﬁrst step 78 81 84 dBµV Vi(RF)AGC(hys) hysteresis of AGC RF input voltage hysteresis of AGC start 136 dB LW band with passive antenna (measured with dummy aerial 15 pF/60 pF) Vi(RF)AGC AGC RF input voltage switched LNA AGC: Vi(RF) value, at which the LNA gain decreases with increasing Vi(RF); fRF = 207 kHz; m = 0 %; start of AGC; ﬁrst step - 104 - dBµV Vi(RF)AGC(hys) hysteresis of AGC RF input voltage hysteresis of AGC start 147 dB TEF6621_1 Objective data sheet Rev. 01.04 — 7 August 2008 © NXP B.V. 2008. All rights reserved. 44 of 58 Free Datasheet http://www.datasheet4u.com/ 11 Page

Páginas	Total 25 Páginas
PDF Descargar	[ Datasheet TEF6621.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
TEF6621	Tuner on main-board IC	NXP Semiconductors
TEF6624	Tuner	NXP Semiconductors

Número de pieza	Descripción	Fabricantes
SLA6805M	High Voltage 3 phase Motor Driver IC.	Sanken
SDC1742	12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.	Analog Devices

DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.

DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar