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TDA9829T Datasheet(PDF) 2 Page - NXP Semiconductors |
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TDA9829T Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 20 page 1998 Nov 09 2 Philips Semiconductors Product specification Downconverter for DVB TDA9829T FEATURES • 5 V supply voltage • Gain controlled IF-amplifier • Mixer for DVB-IF downconversion • VCO for Quadrature Amplitude Modulation (QAM) carrier recovery • External VCO control • Internal and external AGC • DVB output level adjust via AGC adjust • High level DVB operational output amplifier • Mute switch for DVB output • Tuner AGC with adjustable takeover point (TOP) • AFC detector without extra reference circuit • Stabilizer circuit for ripple rejection and to achieve constant output signals. GENERAL DESCRIPTION The TDA9829T is an integrated circuit for DVB-IF processing. QUICK REFERENCE DATA Notes 1. Performance may be decreased at VP = 4.5 V. 2. This parameter is not tested during production and is only given as application information for designing the television receiver. 3. To match the AFC output signal to different tuning systems a current source output is provided. The test circuit is given in Fig.4. The AFC-steepness can be changed by the resistors at pin 14. 4. Depending on the ratio ∆C/C0 of the LC resonant circuit of VCO (Q0 > 50; C0 =Cint +Cext; see Table 2). SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VP supply voltage note 1 4.5 5.0 5.5 V IP supply current 81 96 111 mA V3-4(rms) input sensitivity (RMS value) −1 dB DVB signal at output − 100 150 µV ∆ϕ SSB VCO phase noise f = 100 kHz; free-running 103 107 − dBc/Hz α mute mute attenuation note 2 − 36 − dB I12(sink) sink current maximum tuner gain reduction; see Fig.3 1.5 2 2.6 mA CRstps(US) control steepness ∆I14/∆fIF for USA fIF = 43.75 MHz; notes 3 and 4; see Fig.4 0.7 0.98 1.3 µA/kHz V11(p-p) output voltage (peak-to-peak value) CL < 15 pF; RL >5kΩ; with internal AGC 1.8 2.1 2.4 V B−1dB −1 dB bandwidth CL < 15 pF; RL >5kΩ 11 12 − MHz αH suppression of in-band harmonics Vo = 2.0 V (p-p) 30 35 − dB PSRR power supply ripple rejection at pin 11 see Fig.5 26 36 − dB |
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