參數(shù)資料
型號: TDA7540N
廠商: STMICROELECTRONICS
元件分類: 調(diào)諧器
英文描述: 2-BAND, AUDIO TUNER, PQFP80
封裝: 14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-80
文件頁數(shù): 9/76頁
文件大?。?/td> 1225K
代理商: TDA7540N
TDA7540N
Electrical specifications
3.3.3
AM section
Softmute
VANT
Upper startpoint
SMTH, SMD, SLOPE = 0
10
dB
μV
VANT
lower startpoint
SMTH, SMD, SLOPE = 0
3
dB
μV
aSMmin
Min. softmute depth
SMD, SLOPE = 0, SMTHUpper
18
dB
aSMmax
Max. softmute depth
SMD, SLOPE = 0, SMTHUpper
36
dB
aSMTHISS
Mute depth threshold for ISS
filter on
SMCTH
0.2
1
2
dB
VACTH
Internal AC mute threshold
ACM
60
340
mV
aSMAC
AC mute depth
ACMD
4
10
dB
I49
Charge current
-65
-47.5
-30
μA
I49
Discharge current
1.5
2.5
4.0
μA
S/N MPX
(S+N)/N
VANT = 60dBμV,
dev.= 40kHz,LP=15KHz
deemphasis t = 50μs
66
69
dB
Table 6.
FM section electrical characteristics (continued)
(Tamb = 25°C, VCC1 = VCC2 = VCC3 = VCCST= VCCVCO = VCCMIX1 = VCCMIX2 = VCCIF1 = 8.5V,
fRF = 98MHz, dev= 40kHz, fMOD = 1kHz, fXtal = 10.25MHz, in application circuit, unless
otherwise specified).
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Table 7.
AM section electrical characteristics
(Tamb = 25°C, VCC1 = VCC2 = VCC3 = VCCST= VCCVCO = VCCMIX1 = VCCMIX2 = VCCIF1 = 8.5V,
fRF = 98MHz, m= 30%, fMOD = 400kHz, fXtal = 10.25MHz, in application circuit, unless
otherwise specified).
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Global
VANT_us
Usable sensitivity
(S+N)/N = 26 dB
25
19
dBV
ΔV
ANT
IF2 AGC Range
Ref.: VINRF = 60dBμV,
50
52
dB
(S+N)/N
Signal to Noise Ratio
Ref.: VINRF = 60dBμV50
55
dB
aIF
IF rejection
Ref: VINRF = 60dBV,
IF = 10.7MHz
70
80
dB
fAF
Frequency response
Ref.: VINRF = 60dBV,
ΔVAF = -3 dB
3.6
kHz
THD
Total Harmonic Distortion
VINRF = 60dBV, m = 0.8
m = 0.3
VINRF = 120dBV, m = 0.8
m = 0.3
0.5
0.3
1.0
0.3
%
V53
AF output level
VINRF = 60dBV
160
180
200
mVRMS
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