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參數(shù)資料
| 型號(hào)： | TDA7227 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | SINGLE-CHIP AM/FM RADIO WITH FRONT-END |
| 中文描述： | 單片AM / FM收音機(jī)與前端 |
| 文件頁(yè)數(shù)： | 3/5頁(yè) |
| 文件大?。?/td> | 169K |
| 代理商： | TDA7227 |
BFP
13
14
15
16
17
18
11
12
10
1
2
3
4
5
6
7
8
9
AMRF IN
FMRF OUT
FM OSC
AM OSC
DET OUT
BANDS/W
AGC
QUADDET
AMIFIN
TUN LED
GND2
FMIFIN
AM MIXER
FM MIXER
GND1
FMRFIN
V
V
CC1
CC2
CC
V
(3v)
A
F
FMIF IN
T1
T2
SFE
10.7MA5
SFU
455B
560
L1
L2
L3
T3
AM
FM
100nF
8.2nF
5.6k
2.2k
2.2mH
K
22nF
33nF
33
μ
F
3
7227-03.EPS
TEST CIRCUIT
ELECTRICAL CHARACTERISTICS
T
A
= 25
o
C, V
CC
= 3V
F/E
FM IF : f = 10.7MHz, f = + 22.5kHz, f
m
= 1kHz
AM
: f = 1MHz, m = 30%, f
m
= 1kHz
: f = 100MHz, f
m
= 1kHz
Symbol
V
S
I
CC
Parameter
Test Conditions
Min.
1.8
Typ.
3
9
7
10
Max.
7
Unit
V
mA
mA
dB
μ
Supply Voltage
Supply Current
V
IN
= 0, FM mode
V
IN
= 0, AM mode
- 3dB limiting
V
IN
(lim)
FM F/E Input Limiting Voltage
FM SECTION
V
IN
(lim)
V
O
S/N
THD
AMR
Input Limiting Voltage
Recovered Output Voltage
Signal to Noise Ratio
Total Harmonic Distorsion
AM Rejection Ratio
- 3dB limiting
V
IN
= 80dB
μ
V
IN
= 80dB
μ
V
IN
= 80dB
μ
V
IN
= 80dB
44
80
70
0.4
50
dB
μ
mV
dB
%
dB
AM SECTION
G
V
V
O
S/N
THD
R
O
Gain
Recovered Output Voltage
Signal to Noise Ratio
Total Harmonic Distorsion
Pin 12 Output Resistance
V
IN
= 26dB
μ
V
IN
= 60dB
μ
V
IN
= 60dB
μ
V
IN
= 60dB
μ
FM mode
AM mode
40
60
44
1.0
5
5
mV
mV
dB
%
k
k
7
TDA7227
3/5
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