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參數(shù)資料
| 型號(hào)： | TDA8722M |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | I2C-bus programmable modulator for negative video modulation and FM sound |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 文件頁數(shù)： | 11/28頁 |
| 文件大?。?/td> | 196K |
| 代理商： | TDA8722M |
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1998 Jun 23
11
Philips Semiconductors
Product specification
I
2
C-bus programmable modulator for
negative video modulation and FM sound
TDA8722
S/N audio audio signal-to-noise ratio
f
audio
frequency response of the audio signal
P/S
picture-to-sound ratio
note 6
note 7
no audio signal;
FM = 5.5 MHz;
C17 = 15 pF
no audio signal;
FM = 5.5 MHz;
0 pF
≤
C17
≤
39 pF
45
1
16
50
13
+1
10
dB
dB
dB
P/S
picture-to-sound ratio range
18
10
dB
Channel characteristics
f
RF
V
RF
RF frequency range
output level on RFA and RFB
using tank circuit of Fig.7
asymmetrical output
loaded with 75
;
f = 471.25 to 855.25 MHz
measurement is made
during synchronization
pulse for the modulated
carrier
note 8
f
RF
= 471.25 MHz
f
RF
= 855.25 MHz
f
s
= 5.5 MHz;
C17 = 15 pF;
f
RF
< 700 MHz
f
s
= 5.5 MHz;
C17 = 15 pF;
f
RF
> 700 MHz
f
s
= 5.5 MHz; C17 = 15 pF
note 9
f
p
+ 31.25 kHz
note 10
471.25
77
80
855.25
83
MHz
dB
μ
V
V
RF
difference between the level of
modulated carrier and the level of the
unmodulated carrier
0
1
2
dB
SPO
RF
sh
spurious outside channel
RF second harmonic level on
asymmetrical output
62
30
20
65
25
15
60
dBc
dBc
dBc
dBc
SC
sh
sound carrier second harmonic level
63
58
dBc
SC
th
sound carrier third harmonic level
video signal harmonics
reference frequency spurious
chrominance beat
65
60
65
65
60
55
60
60
dBc
dBc
dBc
dBc
f
ref
IM
Charge pump output (CP)
I
8
V
7
I
OZ
output current
output voltage
OFF-state leakage current
1.5
±
100
2.5
10
μ
A
V
nA
in lock
V
CP
= 2 V; T0 = 1; T1 = 1;
T2 = 1
Amplifier output (AMP)
G
V
7sat
amplifier current gain
output saturation voltage
V
CP
= 2 V; I
AMP
= 10
μ
A
V
CP
= 0 V; T0 = 1; T1 = 0;
T2 = 1
4000
140
200
mV
Crystal oscillator characteristics (XTAL)
Z
9
oscillator input impedance
500
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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| TDA8722T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:I2C-bus programmable modulator for negative video modulation and FM sound |
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| TDA8732 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:NICAM-728 demodulator NIDEM |
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