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TDA7541 数据表(PDF) 19 Page - STMicroelectronics

部件名 TDA7541
功能描述  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
PDF  76 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7541 数据表(HTML) 19 Page - STMicroelectronics

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TDA7541
Electrical specifications and characteristics
19/76
23.9
V23
IF2 output voltage
V56 = 90dBµ, m=off
140
190
240
mVRMS
24. AMAGC2
24.1
VAGC(start) AGC start voltage (PIN47) Input carrier voltage
62
dBµV
24.2
ΔAGC AGC2 range
Between start of AGC2
and the intervention point
of prestage AGC
50
55
dB
24.3
gAGC
Control slope
Seek mode
50
µA/V
24.4
gAGC
Control slope
normal mode
5
µA/V
24.5
II57I
Max. AGC charge current
Seek mode
125
μA
24.6
II57I
Max. AGC charge current
normal mode
5
μA
24.7
V57
Max. AGC output voltage
V47 = 100dBµ
4.6
4.8
V
24.8
V57
Min. AGC output voltage
V47 = 20dBµ
0.2
0.5
V
25. AM audio output
25.1
V43
Audio output voltage
V56 = 90dBµ, m = 30%,
fmod = 1KHz
170
200
230
mVRMS
25.2
THD
Total harmonic distortion
V56 = 90dBµ, m = 30%,
fmod = 1KHz
0.3
0.5
%
25.3
V56 = 90dBµ, m = 80%,
fmod = 1KHz
0.5
0.9
25.4
ROUT
Output impedance
20
25
30
Ω
26. IF noise blanking
26.1
tbl
Min. blanking time
8
μs
26.2
tbl
Max. blanking time
17
μs
26.3
Vth
Min internal threshold
50
mV
26.4
Vth
Max. internal threshold
187.5
mV
26.5
Vthstep
Threshold step
12.5
mV
1.
Can be reached in application circuit, not measured.
Table 7.
AM section (continued)
(Tamb = 25°C, VCC1 = VCC2 = VCCMIX1 = VCCVCO = VCCIF = 8.5V, fXtal = 10.25 MHz, fRF = 1
MHz, m = 30%, fmod = 1 kHz, in application circuit, unless otherwise specified)
Item
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit



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