CYW4343X
18. FM Receiver Specifications
Note: Values in this data sheet are design goals and are subject to change based on the results of device characterization.
Unless otherwise stated, limit values apply for the conditions specified inTable 28, “Environmental Ratings,” on page 90 and
Table 30, “Recommended Operating Conditions and DC Characteristics,” on page 91. Typical values apply for the following condi-
tions:
■
VBAT = 3.6V.
■
Ambient temperature +25°C.
Table 41. FM Receiver Specifications
Parameter
Conditionsa
RF Parameters
Minimum Typical Maximum
Units
Operating frequencyb
Sensitivityc
Frequencies inclusive
65
–
108
MHz
FM only,
SNR ≥ 26 dB
–
–
–
1
–
–
–
dBµV EMF
µV EMF
dBµV
1.1
–5
Receiver adjacent channel Measured for 30 dB SNR at audio output.
selectivityc,d
Signal of interest: 23 dBµV EMF (14.1 µV EMF).
At ±200 kHz.
–
51
62
53
–
–
–
dB
dB
dB
At ±400 kHz.
–
Intermediate signal-plus-
Vin = 20 dBµV (10 µV EMF).
45
noise to noise ratio (S + N)/
N, stereoc
Intermodulation
performancec,d
Blocker level increased until desired at
30 dB SNR.
Wanted signal: 33 dBµV EMF (45 µV EMF)
–
55
–
dBc
Modulated interferer: At fWanted + 400 kHz and + 4 MHz.
CW interferer: At fWanted + 800 kHz and + 8 MHz.
AM suppression, monoc
RDS sensitivitye,f
Vin = 23 dBµV EMF (14.1 µV EMF).
AM at 400 Hz with m = 0.3.
No A-weighted or any other filtering applied.
40
–
–
dB
RDS
RDS deviation = 1.2 kHz.
–
–
–
–
–
–
17
7.1
11
13
4.4
7
–
–
–
–
–
–
dBµV EMF
µV EMF
dBµV
RDS deviation = 2 kHz.
dBµV EMF
µV EMF
dBµV
RDS selectivityf
Wanted Signal: 33 dBµV EMF (45 µV EMF),
2 kHz RDS deviation.
Interferer: ∆f = 40 kHz, fmod = 1 kHz.
±200 kHz
±300 kHz
±400 kHz
–
–
–
49
52
52
–
–
–
dB
dB
dB
RF Input
RF input impedance
Antenna tuning cap
–
–
1.5
2.5
–
–
–
kΩ
30
pF
Document No. 002-14797 Rev. *H
Page 103 of 128
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