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参数资料
| 型号： | TDA4472-MSD |
| 厂商： | TEMIC SEMICONDUCTORS |
| 元件分类： | 接收器 |
| 英文描述： | FM, AUDIO/VIDEO DEMODULATOR, PDIP28 |
| 封装： | SDIP-28 |
| 文件页数： | 11/14页 |
| 文件大小： | 161K |
| 代理商： | TDA4472-MSD |
TDA4472
Rev. A2, 04-Dec-98
6 (14)
Electrical Characteristics
VS = +5 V, Tamb = +25°C; reference point Pin 4 (9, 16), unless otherwise specified
Parameters
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
DC-supply
Pin 23
Supply voltage
– SDIP28
– SO28
VS
4.5
5.0
9.0
5.5
V
Supply current
IS
85
93
mA
VIF-input
Pin 6-7
Input sensitivity, (RMS value)
For FPLL locked
vin
80
120
mVRMS
Input impedance
See note 1
Rin
1.2
k
W
Input capacitance
See note 1
Cin
2
pF
VIF-AGC
Pins 8 and 15
IF gain control range
Gv
60
65
dB
AGC capacitor
Pin 8
CAGC
2.2
mF
Black level capacitor
Pin 15
CBL
100
nF
Switching voltage: VCR mode
See note 2
Vsw
4.0
V
Switching current: VCR mode
See note 2
Isw
50
mA
Tuner-AGC
Pins 10 and 11 see note 3
Available tuner-AGC current
Itun
1
2
4
mA
Allowable output voltage
V11
0.3
13.5
V
IF slip – tuner AGC
Current Itun: 10 to 90%
GIF
8
10
dB
IF input signal for minimum
take over point
Rtop = 10 k
W (Vtop = 4.5
V)
vin
4
mV
IF input signal for maximum
take over point
Rtop = 0, (Vtop = 0.8 V)
vin
40
mV
Variation of the take over point
by temperature
Tamb = 55°C
VIF-AGC: Gv = 46 dB
vin
2
3
dB
FPLL and VCO
Pins 18, 20, 21 and 26
see note 4
Max. oscillator frequency
For carrier generation
fvco
70
MHz
Vision carrier capture range
fvco = 38.9 MHz,
Cvco = 8.2 pF
fcap
±1.5
±2
MHz
Oscillator drift (free running) as
function of temperature
See note 5,
Τamb = 55°C,
Cvco = 8.2 pF,
fvco = 38.9 MHz
f/T
–0.3
%
Video output
Pin 12
Output current
– source
– sink
±I12
2
5
3
mA
Output resistance
See note 1
Rout
100
W
Video output signal
Peak-to-peak value
vo,vid
1.8
2.0
2.2
Vpp
Difference of the video signals
Between B/G and L
vo,vid
10
%
Sync. level
Vsync
1.2
V
Zero carrier level for neg.
modulation, ultra white level
V13 = VS
V8 = 3 V
VDC
3.4
V
Zero carrier level for pos.
modulation, ultra black level
V13 = 0
V8 = 3 V
VDC
1.15
V
Supply voltage influence on the
ultra white and ultra black level
V/V
1
%/V
Video bandwidth (–3 dB)
RL ≥ 1 k
W, CL ≤ 50 pF
B
6
8
MHz
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