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參數(shù)資料
| 型號： | TDA7421N |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS |
| 中文描述： | AM / FM調(diào)諧的汽車收音機(jī)及音響應(yīng)用 |
| 文件頁數(shù)： | 13/38頁 |
| 文件大?。?/td> | 337K |
| 代理商： | TDA7421N |
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13/38
TDA7421N
AM Mixer 2
Ref: AM Test Circuit; measure input at V
MIX2AMIN
, output at V
MIX2OUT
(switches must be in position 2 for AGC
measurements).
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
R
IN,MIX2
Input Resistance
5
K
G
MIX2
Maximum conversion Gain
f
IN
= 10.7MHz
25
dB
IP3
MIX2
3rd Order Intermodulation
Distortion Intercept Point
f
d
= 10.7MHz; f
u1
= 10.8MHz;
f
u2
= 10.9MHz
117
dB
μ
V
CP1
MIX2
1dB Compression Point
f
IN
= 10.7MHz
107
dB
μ
V
CAdj2
Value of the minimum adjusting
capacitance step
T2A3-0 set to 0001
1.57
pF
AGC
MIXSP
AGC2 Starting Point on Mixer 2
f
IN
= 10.7MHz; Value of
V
MIX2AMIN
for which V
MIX2OUT
is
1dB compressed;
IF2A1-0 set to 10
48
dB
μ
V
AGC
MIXIS
AGC2 intervention slope on
Mixer 2
f
IN
= 10.7MHz:
V
MIX2OUT
for
V
MIX2AMIN
= 1dB;
IF2A1-0 set to 10
0.1
dB/dB
AGC
MIXR
AGC2 Range on Mixer 2
f
IN
= 10.7MHz; Range of
V
MIX2AMIN
above AGC
MIXSP
for
which V
MIX2OUT
is not
increasing linearly with a
1dB/dB slope; IF2A1-0 set to 10
50
dB
AM IF2 Amplifier
Ref: AM Test Circuit; f
IN
= 450KHz, measure input at V
IF2AMPIN
, output at V
IF2AMPOUT
(switches must be in position 1).
R
IN,IF2AMP
Input Resistance
2
K
G
IF2AMPMIN
Minimum Gain
V
IF2AMPIN
= 10dB
μ
V;
IF2A1-0 set to 00
50
dB
G
IF2AMPMAX
Maximum Gain
V
IF2AMPIN
= 10dB
μ
V;
IF2A1-0 set to 11
59
dB
AGC
AMPSP
AGC2 Starting Point on IF2 Amp Value of V
IF2AMPIN
for which
V
IF2AMPOUT
is 1dB compressed,
IF2A1-0 set to 01
60
dB
μ
V
AGC
AMPR
AGC2 Range on IF2 Amp
f
IN
= 10.7MHzRange of
V
IF2AMPIN
above AGC
AMPSP
for
which V
IF2AMPOUT
is not
increasing linearly with a
1dB/dB slope; IF2A1-0 set to 01
33
dB
AGC
AMPIS
AGC2 intervention slope on IF2
Amp
f
IN
= 10.7MHz;
V
IF2AMPOUT
for
V
IF2AMPIN
= 1dB;
IF2A1-0 set to 1
0.1
dB/dB
AGC
TCR
AGC2 Time Constant Ratio
Ratio of AGC2 "reception" Time
Constant and "seek" Time
Constant
150/5
s/s
ELECTRICAL CHARACTERISTICS
(Continued)
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| TDA7427 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
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