參數(shù)資料
型號(hào): TDA7514
廠商: 意法半導(dǎo)體
英文描述: SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR
中文描述: 單芯片F(xiàn)M /調(diào)幅調(diào)諧立體聲解碼器和音頻處理器
文件頁數(shù): 17/74頁
文件大?。?/td> 604K
代理商: TDA7514
17/74
TDA7514
3.4 STEREODECODER
Standard Conditions, unless otherwise indicated:
FM:
Input at #TUNER_IN = 1 kHz at 450 mVrms, Input Gain setting = 0.5 dB, Deemphasis = 75
μ
s, Roll
Off Compensation set to give maximum stereo separation (note that this varies with VSBL setting)
AM:
Input at #TUNER_IN = 1 kHz at 1 Vrms, Input Gain setting = 0.5 dB
Table 6.
Symbol
V
IN
Rin
Parameter
Test Condition
Input Gain = 3.5dB
FM
AM
Min.
Typ.
0.5
100
30
0.5
5.75
1.75
50
55
Max.
1.25
130
Unit
V
RMS
k
k
dB
dB
dB
dB
dB
MPX Input Level
Input Resistance (TUNERIN)
70
Gain
Gmax
G
STEP
a
SVRR
Minimum Input Gain
Maximum Input Gain
Step Resolution
Max Channel Separation
Supply Voltage Ripple
Rejection
Total Harmonic Distortion
Signal plus Noise to Noise
Ratio
30
35
Vripple=100mV, f=1kHz
THD
S+N
N
fin=1kHz, mono
A-weighted, S=2Vrms
0.02
91
0.3
%
dB
80
MONO/STEREO SWITCH
(With InGain=5.75dB)
V
PTHST1
Pilot Threshold Voltage
V
PTHST0
Pilot Threshold Voltage
V
PTHMO1
Pilot Threshold Voltage
V
PTHMO0
Pilot Threshold Voltage
PLL
f/f
Capture Range
DEEMPHASIS & HIGHCUT
τ
DeempFM
Deemphasis Time Constants
FM; V
LEVEL >> VHCH
for Stereo, PTH=1
for Stereo, PTH=0
for Mono, PTH=1
for Mono, PTH=0
10
15
7
10
15
25
12
19
25
35
17
25
mV
mV
mV
mV
0.5
%
Deemphasis=50
μ
s, FM
25
50
75
μ
s
Deemphasis=75
μ
s, FM
Deemphasis=50
μ
s, AM
50
75
22.3
100
μ
s
kHz
τ
DeempAM
Deemphasis Time Constants
AM; V
LEVEL >> VHCH
Deemphasis=75
μ
s, AM
14.9
5
kHz
V
REF5V
Carrier and Harmonic suppresion at output
α
19
Pilot Signal
α
38
Subcarrier
α
57
Subcarrier
α
76
Subcarrier
Intermodulation
α
2
fmod=10kHz, fspur=1kHz
α
3
fmod=13kHz, fspur=1kHz
Internal Reference Voltage
4.7
5.3
f=19kHz, Deemphasis=75
μ
s
f=38kHz, Deemphasis=75
μ
s
f=57kHz, Deemphasis=75
μ
s
f=76kHz, Deemphasis=75
μ
s
40
50
75
62
90
dB
dB
dB
dB
65
75
dB
dB
Traffic Radio
f = 57kHz
α
57
Signal
70
dB
SCA – Subsidiary Communication Authorization
α
67
Signal
ACI – Adjacent Channel Interference
α
114
Signal
α
190
Signal
f = 67kHz
75
dB
f = 114kHz
f = 190kHz
95
84
dB
dB
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