TDA9886 аудио драйвер I2C-bus Controlled SSOP-24

The is an alignment-free multistandard (PAL and NTSC) vision and sound IF signal Phase-Locked Loop (PLL) demodulator for negative modulation only and FM processing. The is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL demodulator for positive and negative modulation, including sound AM and FM processing.

5 V supply voltage I Gain controlled wideband Vision Intermediate Frequency (VIF) amplifier, AC-coupled I Multistandard true synchronous demodulation with active carrier regeneration: very linear demodulation, good intermodulation figures, reduced harmonics, and excellent pulse response I Gated phase detector for L and L-accent standard I Fully integrated VIF Voltage-Controlled Oscillator (VCO), alignment-free, frequencies switchable for all negative and positive modulated standards via I2C-bus I Digital acquisition help, VIF frequencies of 33.4 MHz, 33.9 MHz, 38.0 MHz, 38.9 MHz, 45.75 MHz and 58.75 MHz I 4 MHz reference frequency input: signal from PLL tuning system or operating as crystal oscillator I VIF Automatic Gain Control (AGC) detector for gain control, operating as peak sync detector for negative modulated signals and as a peak white detector for positive modulated signals I Precise fully digital Automatic Frequency Control (AFC) detector with 4-bit digital-to-analog converter, AFC bits readable via I2C-bus I TakeOver Point (TOP) adjustable via I2C-bus or alternatively with potentiometer I Fully integrated sound carrier trap for 4.5 MHz, 5.5 MHz, 6.0 MHz and 6.5 MHz, controlled by FM-PLL oscillator I Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode, PLL controlled I SIF AGC for gain controlled SIF amplifier, single reference QSS mixer able to operate in high performance single reference QSS mode and in intercarrier mode, switchable via I AM demodulator without extra reference circuit I Alignment-free selective FM-PLL demodulator with high linearity and low noise

I Four selectable I2C-bus addresses I I2C-bus control for all functions I I2C-bus transceiver with pin programmable Module ADdress (MAD)

Table 1. Symbol IP P Video part Vi(VIF)(rms) GVIF(cr) fVIF VIF input voltage sensitivity (RMS value) control range VIF gain vision carrier operating frequencies -1 dB video at output see Figure 9 see Table 13 60 fVIF Vo(v)(p-p) VIF frequency window of digital acquisition help video output voltage (peak-to-peak value) related to fVIF; see Figure 12 see Figure 7 normal mode (sound carrier trap active) and sound carrier on trap bypass mode and sound carrier off Gdif differential gain

Quick reference data Parameter supply voltage supply current time constant ? C) for network at pin VP for applications without I2C-bus Conditions

trap bypass mode and sound carrier off; AC load: < 20 pF, 1 k ftrap = 4.5 MHz ftrap = 5.5 MHz ftrap = 6.0 MHz ftrap = 6.5 MHz = 4.5 MHz = 5.5 MHz

Quick reference data...continued Parameter weighted signal-to-noise ratio Conditions unified weighting filter ("ITU-T J.61"); see Figure 13 fripple = 70 Hz; video signal; grey level; positive and negative modulation; see Figure 8 definition: IAFC / fVIF 27 kHz FM deviation; 50 s de-emphasis 25 kHz FM deviation; 50 s de-emphasis % AM modulation without de-emphasis; measured with FM-PLL filter of Figure 26 black picture; see Figure 21 in accordance with "ITU-R BS.468-4" referenced to 27 kHz FM deviation; 50 s de-emphasis; AM: = 1 kHz; 54 % see Figure 8 fripple = 70 Hz; see Figure 8

PSRRCVBS power supply ripple rejection on pin CVBS AFCstps Audio part Vo(AF)(rms) THD BAF(-3dB) S/NW(AF) AM(sup) AF output voltage (RMS value) total harmonic distortion dB AF bandwidth weighted signal-to-noise ratio of audio signal AM suppression of FM demodulator power supply ripple rejection power supply ripple rejection AFC control steepness

IF intercarrier output level QSS mode; SC1; SC2 off (RMS value) L standard; without modulation intercarrier mode; = 20 dB; SC2 off

Reference frequency input; pin REF fref Vref(rms) reference signal frequency reference signal voltage (RMS value) operation as input terminal

Values of video and sound parameters can be decreased 4.5 V. The sound carrier trap can be bypassed by switching the I2C-bus. In this way the full composite video spectrum appears at pin CVBS. The amplitude 1.1 V (p-p). Condition: luminance range (5 steps) from 100 AC load; 20 pF and 1 k. The sound carrier frequencies (depending on TV standard) are attenuated by the integrated sound carrier traps (see Figure 15 to Figure 20; H (s) is the absolute value of transfer function). S/N is the ratio of black-to-white amplitude to the noise voltage (RMS value measured on pin CVBS and tested at video black level, `quiet line'). Noise analyzer settings: = 5 MHz, 200 kHz high-pass and sound carrier trap on. In case of S/NW weighted in accordance with "ITU-T J.61". Measurements taken for B/G standard. The intercarrier output signal at pin SIOMAD can be calculated by the following formula taking into account the internal video signal with 1.1 V (p-p) as a reference: V o(intc)(rms) 1.1 ? where: is the 10 V and 20 V

SC ) correction term for RMS value, ) is the sound-to-picture carrier ratio at pins VIF1 and VIF2 in dB, dB is the correction term PC )

of internal circuitry and dB is the tolerance of video output and intercarrier output Vo(intc)(rms).

Теги: TDA9886 аудио драйвер I2C-bus Controlled SSOP-24, F1.19.13, AE, Драйвер