參數(shù)資料
型號(hào)： TDA5731M
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 調(diào)諧器
英文描述： Low power VHF, UHF andhyperband mixer/oscillator for TVand VCR 3-band tuners(應(yīng)用于TV和 VCR三頻帶調(diào)諧的低功耗VHF，UHF和超頻帶混頻器/振蕩器)
中文描述： 3-BAND, VIDEO TUNER, PDSO20
封裝： 4.40 MM, PLASTIC, SOT-266-1, SSOP-20
文件頁(yè)數(shù)： 8/17頁(yè)
文件大小： 126K
代理商： TDA5731M
1995 Mar 21
8
Philips Semiconductors
Product specification
Low power VHF, UHF and hyperband
mixer/oscillator for TV and VCR 3-band tuners
TDA5731M
Notes
1.
2.
Cross modulation measurement is achieved using the 3 equal signals method (see Fig.4).
The gain is defined as the transducer gain (measured in Fig.8) plus the voltage transformation ratio of L7 to L8
(5 : 1, 15.4 dB).
The frequency shift is defined as a change in oscillator frequency for a variation of supply voltage. In one instance
V
P
= 5 to 4.75 V and in the other instance V
P
= 5 to 5.25 V. In both cases, the frequency shift is below the specified
value.
The frequency ripple susceptibility is measured at 500 kHz at the LO output (see Fig.5). The level of the ripple signal
is increased until a difference of 53.5 dB is reached at the IF output.
The frequency drift is defined as the change in oscillator frequency for a variation of ambient temperature, on the one
hand from T
amb
= 25
°
C to T
amb
= 0
°
C and on the other hand from T
amb
= 25
°
C to T
amb
= 50
°
C.
The capacitors in the oscillator circuits of Fig.8 are as follows:
a) Band A: C1, C5 and C7.
b) Band B: C4 and C9 and C11.
c) Band C: C2, C3, C6, C8 and C10 are NP0 types.
Switching on drift is the change in oscillator frequency between 5 seconds and 15 minutes after switching on.
The values have been corrected for hybrid and cable losses. The symmetrical output impedance of the circuit is
100
.
3.
4.
5.
6.
7.
8.
Band C oscillator
f
R
frequency range
T
amb
=
10 to +80
°
C;
V
P
= 4.5 to 5.5 V;
V
tune
= 0.45 to 28 V
V
P
=
±
5%; note 3
f
i
= 485 MHz; note 4
485
900
MHz
f
shiift
χ
ripple(p-p)
frequency shift
ripple susceptibility of supply
voltage (peak-to-peak value)
frequency ripple
(peak-to-peak value)
frequency drift
20
400
kHz
mV
f
ripple(p-p)
from 20 Hz to 500 kHz;
f
i
= 900 MHz
without compensation;
notes 5 and 6
5 s to 15 min after switching on;
without compensation; note 7
10
mV
f
drift
2.5
MHz
600
kHz
LO output
Y
O
output admittance (G
P
//C
P
)
f
i
= 80 MHz; see Fig.10
f
i
= 80 MHz; see Fig.10
f
i
= 900 MHz; see Fig.10
f
i
= 900 MHz; see Fig.10
R
L
= 50
;
T
amb
=
10 to +80
°
C;
V
P
= 4.5 to 5.5 V;
R
L
= 50
; T
amb
=
10 to +80
°
C;
V
P
= 4.5 to 5.5 V; note 10
80
2.4
0.9
4.6
0.9
91
100
mS
pF
mS
pF
dB
μ
V
V
o
output voltage
SRF
spurious signal on LO output
with respect to LO output
signal
LO signal harmonics with
respect to LO signal
10
dB
HLO
R
L
= 50
;
T
amb
=
10 to +80
°
C;
V
P
= 4.5 to 5.5 V;
10
dB
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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