TDA9829T Ver la hoja de datos (PDF) - Philips Electronics
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TDA9829T Datasheet PDF : 20 Pages
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Philips Semiconductors
Downconverter for DVB
Product specification
TDA9829T
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
∆GIF
IF slip by automatic gain control tuner gain current from
−
6
8
dB
20 to 80%
AFC circuit (pin 14); see notes 7 and 8 and Fig.4
CRstps(US)
control steepness ∆I14/∆fIF for
USA
fIF = 43.75 MHz
CRstps(EU)
control steepness ∆I14/∆fIF for
Europe
fIF = 36.15 MHz
0.7
0.98 1.3
µA/kHz
0.45 0.70 0.95 µA/kHz
DVB output signal (IF input to DVB output)
Vo(p-p)
VO(DC)
B−1dB
B−3dB
αC(DVB)
αH
PSRR
output voltage (pin 11)
(peak-to-peak value)
CL < 15 pF; RL > 5 kΩ; with 1.8
2.1
2.4
V
internal AGC
DC output voltage
−
2.5
−
V
−1 dB bandwidth
−3 dB bandwidth
CL < 15 pF; RL > 5 kΩ
11
12
−
−
17
−
MHz
MHz
fundamental input signal and
IF harmonics
35
40
−
dB
suppression of in-band
harmonics
Vo = 2.0 V (p-p)
30
35
−
dB
power supply ripple rejection at see Fig.5
pin 11
26
36
−
dB
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. Mute state also can be achieved by leaving pin 20 open-circuit.
4. Resonance circuit of VCO: Q0 > 50; Cext, Cint and L see Table 2.
5. Temperature coefficient of external LC-circuit is equal to zero.
6. Response speed valid for an IF input level range of 200 µV up to 70 mV.
7. 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.
8. Depending on the ratio ∆C/C0 of the LC resonant circuit of VCO (Q0 > 50; C0 = Cint + Cext; see Table 2).
Table 1 Input frequencies, symbol frequencies and VCO frequencies
SYMBOL
fs
fIF
fVCO
DESCRIPTION
Symbol frequency
IF frequency
VCO frequency
DVB (Europe)
6.9
36.15
86.0
DVB (USA)
5.0
43.75
97.5
UNIT
MHz
MHz
MHz
1998 Nov 09
8
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