- Silicon Laboratories, Inc. Radio User Manual
Si4734/35-B20
Rev. 1.0 13
Seek/Tune Time
6
RCLK tolerance 
=100ppm
— — 80 ms/channel
Powerup Time
6
From powerdown — — 110 ms
RSSI Offset
12
Input levels of 8 and 
60 dBµV at RF Input
–3 — 3 dB
Table 9. FM Receiver Characteristics
1,2
 (Continued)
(V
DD
= 2.7 to 5.5 V, V
IO
= 1.5 to 3.6 V, T
A
= –20 to 85 °C)
Parameter Symbol Test Condition Min Typ Max Unit
Notes:
1. Additional testing information is available in Application Note AN388. Volume = maximum for all tests. Tested at 
RF = 98.1 MHz.
2.  To ensure proper operation and receiver performance, follow the guidelines in “AN383: Antenna Selection and 
Universal Layout Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers.
3.  F
MOD
=1kHz, 75µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
4.  Δf = 22.5 kHz.
5.  B
AF
= 300 Hz to 15 kHz, A-weighted.
6.  Guaranteed by characterization.
7.  V
EMF
=1 mV.
8.  |f
2
 – f
1
| > 2 MHz, f
0
=2xf
1
 – f
2
. AGC is disabled. Refer to "6. Pin Descriptions: Si4734/35-GM" on page 30. 
9.  Δf = 75 kHz.
10. At L
OUT
 and R
OUT
 pins.
11. Analog audio output mode.
12. At temperature (25°C).
