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TDA7338 数据表(PDF) 3 Page - STMicroelectronics

部件名 TDA7338
功能描述  STEREO DECODER
PDF  11 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7338 数据表(HTML) 3 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (VCC = 9V; modulation frequency: 1KHz; de-emphasis time:
T= 50
µs; nominal MPX input voltage: VMPX = 1.5VPP; m 100% (75KHz deviation, fmod = 1KHz);
RIN = 40.2k
Ω,ROUT = 40.2kΩ;Tamb =27°C; CREF = 4.7µF; unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VCC
Supply Voltage
7.5
9
10.2
V
ICC
Supply Current
5
10
15
mA
VIN
MPX Input Level (peak to peak)
fm = 1KHz
1.5
V
VORMS
A.F. Output Voltage (mono)
pin 10 and 11VIN = 0.5VRMS
MONO;
1.5
V
SVRR
Supply Voltage Ripple Rejection
VRIPPLE = 200mV; f = 1KHz
40
55
dB
VL/VR
Difference of Output Voltage Levels
pin 10 and 11- mono
-0.8
0.8
dB
Vo/Vi
Gain
V10/V20
8.5
9.5
10.5
dB
RO
Output Resistance
pin 10 and 11
10
50
Ω
VO
DC Output Voltage
pin 10 and 11
4.2
4.5
4.8
V
α
Channel Separation
VR -VSB = -50mVDC
30
45
dB
THD
Total Harmonic distortion
0.02
0.3
%
S
+ N
N
Signal plus noise to noise ratio
f = 20Hz to 16KHz;
S = 2Vrms
91
dB
αM
Muting Attenuation
V7 and V8 < 0.6V
100
dB
VDC
Mute DC Steps at pins 10, 11
Mute at pin 8
0
4
mV
CARRIER AND HARMONIC SUPPRESSION AT THE OUTPUT
α19
Pilot Signal f = 19KHz
55
70
dB
α38
Subcarrier f = 38KHz
75
dB
α57
Subcarrier f = 57KHz
62
dB
α76
Subcarrier f = 76KHz
90
dB
INTERMODULATION (note 1)
α2fmod = 10KHz; fspur = 1KHz
65
dB
α3fmod = 13KHz; fspur = 1KHz
75
dB
TRAFFIC RADIO (note 2)
α57
Signal f = 57KHz
70
dB
SCA - SUBSIDIARY COMMUNICATIONS AUTHORIZATION (note 3)
α67
Signal f = 67KHz
75
dB
ACI - ADJACENT CHANNEL INTERFERENCE (note4)
α114
Signal f = 114KHz
95
dB
α190
Signal f = 190KHz
84
dB
MONO/ STEREO SWITCH
VINTH
Pilot Threshold Voltage
for stereo ”ON”
12
20
28
mVRMS
VINTH
Pilot Threshold Voltage
for stereo ”OFF”
7
14
21
mVRMS
VPI
Pilot Indicator Saturation Voltage
I = 1mA
0.2
0.5
V
IPI
Pilot Indicator Leakage Current
V = 9V
10
µA
V19
Control Voltage for forced mono
α = < 3dB
0.8
V
STEREO BLEND
V16-17
Control Voltage for Channel
Separation
α = 6dB; VR = 3.6V (note 5)
-0.31
-0.27
-0.23
V
V16-17
Control Voltage for Channel
Separation
α = 26dB;
-85
-55
-30
mV
TDA7338
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