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6 / 103 page TDA9897_TDA9898_4 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 04 — 25 May 2009 6 of 103 NXP Semiconductors TDA9897; TDA9898 Multistandard hybrid IF processing [1] Values of video and sound parameters can be decreased at VP = 4.5 V. [2] AC load; CL < 20 pF and RL >1kΩ. The sound carrier frequencies (depending on TV standard) are attenuated by the integrated sound carrier traps. [3] Condition: luminance range (5 steps) from 0 % to 100 %. Measurement value is based on 4 of 5 steps. [4] The sound carrier trap can be bypassed by setting the I2C-bus bit W2[0] to logic 0; see Table 23. In this way the full composite video spectrum appears at pin CVBS. The video amplitude is reduced to 1.1 V (p-p). [5] Measurement using 200 kHz high-pass filter, 5 MHz low-pass filter and subcarrier notch filter ( “ITU-T J.64”). [6] To match the AFC output signal to different tuning systems a current output is provided. The test circuit is given in Figure 19. The AFC steepness can be changed by resistors R1 and R2. [7] With single-ended load for fIF < 45 MHz RL ≥ 1kΩ and CL ≤ 5 pF to ground and for fIF = 45 MHz to 60 MHz RL =1kΩ and CL ≤ 3 pF to ground. [8] This parameter is not tested during production and is only given as application information. [9] Noise level is measured without input signal but AGC adjusted corresponding to the given input level. [10] Set with AGC nominal output voltage as reference. For C/N measurement switch input signal off. [11] The tolerance of the reference frequency determines the accuracy of VIF AFC, RIF AFC, FM demodulator center frequency, maximum FM deviation, sound trap frequency, LIF band-pass cut-off frequency, as well as the accuracy of the synthesizer. ϕ n(synth) synthesizer phase noise with 4 MHz crystal oscillator reference; fsynth = 31 MHz; fIF =36MHz at 1 kHz [8] 89 99 - dBc/Hz at 10 kHz [8] 89 99 - dBc/Hz at 100 kHz [8] 98 102 - dBc/Hz at 1.4 MHz [8] 115 119 - dBc/Hz αripple(pb)LIF low IF pass-band ripple 6 MHz bandwidth - - 2.7 dB 7 MHz bandwidth - - 2.7 dB 8 MHz bandwidth - - 2.7 dB αstpb stop-band attenuation 8 MHz band; f = 15.75 MHz 30 40 - dB αimage image rejection −10 MHz to 0 MHz; BP on 30 34 - dB C/N carrier-to-noise ratio at fo = 4.9 MHz; Vi(IF) = 10 mV (RMS); see Figure 37 [8][9][10] 112 118 - dBc/Hz Reference frequency input from external source fref reference frequency W7[7] = 0 [11] -4 -MHz Vref(RMS) RMS reference voltage W7[7] = 0; see Figure 34 and Figure 46 15 150 500 mV Table 1. Quick reference data …continued VP =5V; Tamb =25 °C. Symbol Parameter Conditions Min Typ Max Unit |
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