cxa1884n Sony Electronics, cxa1884n Datasheet - Page 8

• Manufacturer Part Number: cxa1884n
• Description: Low-voltage Fm If Amplifier
• Manufacturer: Sony Electronics

Test Method
Input for –3dB Limiting V
Use test circuit 3. Apply a signal with the following characteristics to SIG IN.
Here, the value of V
hence specified as V
AM rejection ratio (AMRR)
Use test circuit 3. Apply a signal with the following characteristics to SIG IN.
Here, the value of V
and the V
Recovered signal voltage V
Use test circuit 3. Apply a signal with the following characteristics to SIG IN.
Here, the value of the Pin 9 output voltage is expressed as V
OP amplifier output voltage amplitude V
Use test circuit 5. If output voltage V is expressed as V
follows that:
Comparator hysteresis width V
Use test circuit 6. Vary V
Specify V
Similarly, specify V
LVA threshold voltage V
Use test circuit 10. Vary power voltage Vcc from 1.3 to 0.95V.
Specify Vcc as V
Similarly, specify Vcc as V
Signal frequency: fs = 21.7MHz
Frequency deviation: f
Signal frequency: fs = 21.7MHz
Frequency deviation: f
Modulation ratio: AM
Signal frequency: fs = 21.7MHz
Frequency deviation: f
Therefore: VHY
20 log
AMRR = 20 log
V
O
IN
AC
= V
voltage, as V
value is hence specified as V
1
– V
V
V
PML
AC1
AC2
2
IN
AC
, when (C) voltage changes from low to high.
AC2
AC
voltage as V
V
< 3dB
is specified as V
TW
.
MOD
is specified as V
V
V
IN
1
DIV
DIV
DIV
AC1
AC2
= V
PML
when (C) voltage changes from low to high.
PMH
IN
between 0.1 to 0.3V.
= 30%
= 2.3kHz
= 2.3kHz
= 2.3kHz
(
DET
1
LIM
, when (C) voltage changes from high to low.
and recovery voltage V
– V
> 25dB
)
TW
2
2
, when (C) voltage changes from high to low.
AC1
Modulation frequency: f
Signal level: V
Modulation frequency: f
Signal level: V
Modulation frequency: f
Modulation frequency: f
Signal level: V
AC1
AC2
. Next, AM is modified to:
O
. Next, the signal level V
.
– 8 –
PMH
L
L
L
= 40dBµ
= 40dBµ
= 50dBµ
1
when V
DET
.
MOD
MOD
MOD
MOD
IN
= 256Hz
= 256Hz
= 256Hz
= 256Hz
L
is 0.1V, and as V2 when V
is changed to 19dBµ and V
IN
AC
is 0.3V, it
CXA1884N
value is