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參數(shù)資料
| 型號： | TDA8722M-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 文件頁數(shù)： | 3/28頁 |
| 文件大?。?/td> | 155K |
| 代理商： | TDA8722M-T |
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1998 Jun 23
11
Philips Semiconductors
Product specication
I2C-bus programmable modulator for
negative video modulation and FM sound
TDA8722
S/N audio audio signal-to-noise ratio
note 6
45
50
dB
faudio
frequency response of the audio signal
note 7
1
+1
dB
P/S
picture-to-sound ratio
no audio signal;
FM = 5.5 MHz;
C17 =15pF
16
13
10
dB
P/S
picture-to-sound ratio range
no audio signal;
FM = 5.5 MHz;
0pF
≤ C17 ≤ 39 pF
18
10
dB
Channel characteristics
fRF
RF frequency range
using tank circuit of Fig.7
471.25
855.25
MHz
VRF
output level on RFA and RFB
asymmetrical output
loaded with 75
;
f = 471.25 to 855.25 MHz
77
80
83
dB
V
RF
difference between the level of
modulated carrier and the level of the
unmodulated carrier
measurement is made
during synchronization
pulse for the modulated
carrier
012dB
SPO
spurious outside channel
note 8
62
dBc
RFsh
RF second harmonic level on
asymmetrical output
fRF = 471.25 MHz
30
25
dBc
fRF = 855.25 MHz
20
15
dBc
SCsh
sound carrier second harmonic level
fs = 5.5 MHz;
C17 = 15 pF;
fRF < 700 MHz
65
60
dBc
fs = 5.5 MHz;
C17 = 15 pF;
fRF > 700 MHz
63
58
dBc
SCth
sound carrier third harmonic level
fs = 5.5 MHz; C17 = 15 pF
65
60
dBc
video signal harmonics
note 9
60
55
dBc
fref
reference frequency spurious
fp + 31.25 kHz
65
60
dBc
IM
chrominance beat
note 10
65
60
dBc
Charge pump output (CP)
I8
output current
±100
A
V7
output voltage
in lock
1.5
2.5
V
IOZ
OFF-state leakage current
VCP = 2 V; T0 = 1; T1 = 1;
T2 = 1
10
nA
Amplier output (AMP)
G
amplier current gain
VCP =2V; IAMP =10 A
4000
V7sat
output saturation voltage
VCP = 0 V; T0 = 1; T1 = 0;
T2 = 1
140
200
mV
Crystal oscillator characteristics (XTAL)
Z9
oscillator input impedance
500
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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