tda7421n STMicroelectronics, tda7421n Datasheet - Page 9

• Manufacturer Part Number: tda7421n
• Description: Am/fm Tuner For Car Radio And Hi-fi Applications
• Manufacturer: STMicroelectronics

ELECTRICAL CHARACTERISTICS (Continued)
FM IF Amplifier 1
Ref: FM Test Circuit, measure input at V
FM IF Amplifier 2
Ref: FM Test Circuit, measure input at V
FM Limiter, Field Strengh Meter and Demodulator
Ref: FM Test circuit, measure:
- Input at V
- FS Meter output at V
- demodulator adjustment output at V
SM
SM
G
R
G
CP1
R
R
R
CP1
IP3
IP3
Symbol
OUT,AMP2
MAX,AMP2
MIN,AMP2
R
G
OUT,AMP1
IN,AMP1
IN,AMP2
MAXSHIFT
G
MINSHIFT
SM1
SM2
SM3
SM4
IN
AMP1
LS
AMP1
AMP2
LIM
AMP1
AMP2
,
LIM
FMLIMIN
Input Resistance
Output Resistance
Typical Gain
3rd Order Intermodulation
Distortion Intercept Point
1dB Compression Point
Input Resistance
Output Resistance
Minimum Gain
Maximum Gain
3rd Order Intermodulation
Distortion Intercept Point
1dB Compression Point
Limiter Input Resistance
Limiter Gain
Limiting Sensitivity
Smeter 1
Smeter 2
Smeter 3
Smeter 4
Smeter Minimum Shift Voltage
Smeter Maximum Shift Voltage
, f
IN
FMSMETER
= 10.7MHz
Parameter
(FMADJ set to 0, FSL4-0 set to 00000)
FSMETER
FMAMP1IN
FMAMP2IN
(FMADJ set to 1)
f
f
f
FBH3-0 set to 0100
f
FBH3-0 set to 0100
f = 10.7MHz
f = 10.7MHz
f
f
f
f
FBL3-0 set to 0100
f
FBL3-0 set to 0100
V
V
V
V
V
FSL4-0 set to 00000
V
FSL4-0 set to 11111
IN
d
u2
IN
IN
IN
d
u2
IN
, output at V
, output at V
FMLIMIN
FMLIMIN
FMLIMIN
FMLIMIN
FMLIMIN
FMLIMIN
= 10.7MHz; f
= 10.7MHz; f
= 10.9MHz;
= 10.9MHz;
= 10.7MHz
= 10.7MHz;
= 10.7MHz, FBL1-0 set to 01
= 10.7MHz, FBL1-0 set to 00
= 10.7MHz;
Test Condition
= 40dB V
= 60dB V
= 80dB V
= 100dB V
= 70dB V;
= 70dB V;
FMAMP1OUT
FMAMP2OUT
u1
u1
= 10.8MHz;
= 10.8MHz;
Min.
Typ.
18.5
330
330
330
330
330
1.1
2.3
3.7
4.9
0.0
1.5
10
90
23
6
Max.
TDA7421N
dB V
dB V
dB V
dB V
dB v
Unit
dB
dB
dB
dB
V
V
V
V
V
V
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