參數(shù)資料
型號(hào)： 935251700518
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝： PLASTIC, SOT-341, SSOP-28
文件頁(yè)數(shù)： 6/35頁(yè)
文件大小： 262K
代理商： 935251700518
1999 Jan 13
14
Philips Semiconductors
Product specication
5 V mixer/oscillator-PLL synthesizers for
hyperband tuners
TDA6404; TDA6405;
TDA6405A
Notes
1. This is the level of the RF signal (100% amplitude modulated with 11.89 kHz) that causes a 750 Hz frequency
deviation on the oscillator signal; it produces sidebands 30 dB below the level of the oscillator signal.
2. The frequency shift is defined as the change of the oscillator frequency when the supply voltage varies from
VCC = 5 to 4.75 V (4.5 V) or from VCC = 5 to 5.25 V (5.5 V). The oscillator is free-running during this measurement.
3. The frequency drift is defined as the change of the oscillator frequency when the ambient temperature varies from
Tamb =25to0 °C or from Tamb =25to50 °C. The oscillator is free-running during this measurement.
4. The switching on drift is defined as the change of the oscillator frequency between 5 seconds and 15 minutes after
switching on. The oscillator is free-running during this measurement.
5. The ripple susceptibility is measured for a 500 kHz ripple at the IF amplifier output using the measurement circuit;
the level of the ripple signal is increased until a difference of 53.5 dB between the IF carrier set at 100 dB
V and the
sideband components is reached.
6. This is the level of divider interferences close to the IF frequency. For example:
Ch S1: fosc = 144.15 MHz and 14fosc = 36.0375 MHz.
Ch S2: fosc = 151.15 MHz and 14fosc = 37.7875 MHz.
Ch S14: fosc = 291.15 MHz and 18fosc = 36.39375 MHz.
The VHF RF input must be left open (i.e. not connected to any load or cable).
The UHF RF inputs are connected to a hybrid.
7. Crystal oscillator interference means the 4 MHz sidebands caused by the crystal oscillator.
The rejection should be >60 dB for an IF output signal of 100 dB
V.
8. The reference frequency rejection is the level of reference frequency sidebands related to the sound subcarrier.
The rejection should be >50 dB for an IF output signal of 100 dB
V, fREF = 7.8125 kHz.
9. Channel x beat: picture carrier frequency (69.25 MHz) and sound carrier frequency (74.75 MHz) both at 80 dB
V,
fosc at 108.15 MHz. The rejection of the interfering product RF picture carrier frequency + RF sound carrier
frequency
fosc at 35.85 MHz should be >60 dB.
10. Channel S02: picture carrier frequency is 76.25 MHz at 80 dB
V, fosc = 115.15 MHz.
The rejection of fosc 2 × fIF = 37.35 MHz should be >66 dB.
REJECTION AT THE IF AMPLIFIER OUTPUT
INTDIF
level of divider
interferences in the IF
signal
note 6
20
dB
V
INTRXTAL
crystal oscillator
interferences rejection
note 7
60
dBc
INTRFREF reference frequency
rejection
note 8
50
dBc
INTCHX
channel x beat
note 9
60
dBc
INTS02
S02 beat
note 10
66
dBc
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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