Specifications

Si4730/31/34/35-D60
Rev. 1.1 15
Table 8. 64–75.9 MHz Input Frequency FM Receiver Characteristics
1,2,3
(V
A
= 2.7 to 5.5 V, V
D
= 1.62 to 3.6 V, T
A
= –20 to 85 °C)
Parameter Symbol Test Condition Min Typ Max Unit
Input Frequency f
RF
64 — 75.9 MHz
Sensitivity
4,5,6
,
8
(S+N)/N = 26 dB — 3.5 — µV EMF
LNA Input Resistance
3,7
345 k
LNA Input Capacitance
3,7
456 pF
Input IP3
9
— 105 — dBµV EMF
AM Suppression
3,4,5,7
m = 0.3 — 50 — dB
Adjacent Channel Selectivity
±200 kHz — 50 — dB
Alternate Channel Selectivity
±400 kHz — 70 — dB
Audio Output Voltage
4,5,7
72 80 90 mV
RMS
Audio Output L/R Imbalance
4,7,10
—— 1 dB
Audio Frequency Response Low
3
–3 dB — — 30 Hz
Audio Frequency Response High
3
–3 dB 15 — — kHz
Audio Mono S/N
4,3,5,7,11
—63— dB
Audio THD
4,7,10
—0.1— %
De-emphasis Time Constant FM_DEEMPHASIS = 2 70 75 80 µs
FM_DEEMPHASIS = 1 45 50 54 µs
Audio Output Load Resistance
3,11
R
L
Single-ended 10 — — k
Audio Output Load Capacitance
3,11
C
L
Single-ended — — 50 pF
Seek/Tune Time
3
RCLK tolerance
=100ppm
— — 60 ms/channel
Powerup Time
3
From powerdown — — 110 ms
RSSI Offset
12
Input levels of 8 and
60 dBµV EMF
–3 — 3 dB
Notes:
1. Additional testing information is available in “AN388: Si470x/1x/2x/3x/4x Evaluation Board Test Procedure.”
Volume = maximum for all tests. Tested at RF = 98.1 MHz.
2. To ensure proper operation and receiver performance, follow the guidelines in “AN383: Si47xx Antenna, Schematic,
Layout, and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers.
3. Guaranteed by characterization.
4. F
MOD
=1kHz, 75µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
5. f = 22.5 kHz.
6. B
AF
= 300 Hz to 15 kHz, A-weighted.
7. V
EMF
=1 mV.
8. Analog output mode.
9. |f
2
– f
1
| > 2 MHz, f
0
=2xf
1
– f
2
. AGC is disabled.
10. f = 75 kHz.
11. At LOUT and ROUT pins.
12. At temperature (25 °C).