TDA7227 Datasheet, PDF (3/5 Pages) STMicroelectronics – SINGLE-CHIP AM/FM RADIO WITH FRONT-END

TDA7227
ELECTRICAL CHARACTERISTICS
TA = 25^oC, VCC = 3V F/E : f = 100MHz, fm = 1kHz
FM IF : f = 10.7MHz, f = + 22.5kHz, fm = 1kHz
AM : f = 1MHz, m = 30%, f_m = 1kHz
Sym bol
V_S
I_CC
Parameter
Supply Voltage
Supply Current
VIN (lim) FM F/E Input Limiting Voltage
FM SECTION
Test Conditions
V_IN = 0, FM mode
V_IN = 0, AM mode
- 3dB limiting
V_IN (lim)
VO
S/N
THD
Input Limiting Voltage
Recovered Output Voltage
Signal to Noise Ratio
Total Harmonic Distorsion
AMR
AM Rejection Ratio
AM SECTION
- 3dB limiting
VIN = 80dBµ
V_IN = 80dBµ
V_IN = 80dBµ
VIN = 80dBµ
G_V
VO
S/N
THD
RO
Gain
Recovered Output Voltage
Signal to Noise Ratio
Total Harmonic Distorsion
Pin 12 Output Resistance
V_IN = 26dBµ
VIN = 60dBµ
V_IN = 60dBµ
V_IN = 60dBµ
FM mode
AM mode
Min.
1.8
Typ.
3
9
7
10
Max.
7
Unit
V
mA
mA
dBµ
44
dBµ
80
mV
70
dB
0.4
%
50
dB
40
mV
60
mV
44
dB
1.0
%
5
kΩ
5
kΩ
TEST CIRCUIT
2.2mH
L1
22nF 2.2k_Ω
18
AMRF IN
17
FMRF OUT
K
L3
L2
FM
100nF
AM
8.2nF
33 µF
16
V _CC1
15
FM OSC
14
AM OSC
13
DE T OUT
12
BAND S/W
11
AGC
5.6k_Ω
T3
10
QUAD DET
V_CC (3v)
FMRF IN
1
BFP
GND1
2
FM MIXER
3
T1
AM MIXER
4
T2
V _CC2
5
33nF
FMIF IN
FMIF IN
6
GND2
7
TUN LED
8
AMIF IN
9
SFE
10.7MA5
56 0 _Ω
SFU
455B
72 27 -0 3 .EP S
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