SI4736-B20 Datasheet, PDF (13/38 Pages) Silicon Laboratories – BROADCAST WEATHER BAND RADIO RECEIVER

Si4736/37/38/39-B20
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
Seek/Tune Time⁶
Powerup Time⁶
RSSI Offset¹²
Symbol
Test Condition
Min Typ Max
Unit
RCLK tolerance
= 100 ppm
—
—
80 ms/channel
From powerdown
—
—
110
ms
Input levels of 8 and
–3
—
3
dB
60 dBµV at RF Input
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 = 1 kHz, 75 µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
4. f = 22.5 kHz.
5. B_AF = 300 Hz to 15 kHz, A-weighted.
6. Guaranteed by characterization.
7. V_EMF = 1 mV.
8. |f₂ – f₁| > 2 MHz, f₀ = 2 x f₁ – f₂. AGC is disabled. Refer to "6. Pin Descriptions: Si4736/37/38/39-GM" on page 29.
9. f = 75 kHz.
10. At L_OUT and R_OUT pins.
11. Analog audio output mode.
12. At temperature (25 °C).
Table 10. WB Receiver Characteristics¹
(V_DD = 2.7 to 5.5 V, VIO = 1.5 to 3.6V, T_A = 25 °C)
Parameter
Input Frequency
Symbol
f_R
Test Condition
Min Typ Max Unit
162.4
—
162.55 MHz
Sensitivity^2,3
SINAD = 12 dB
—
0.9
— µV EMF
Adjacent Channel Selectivity
Audio S/N^2,3,4,5
Audio Frequency Response Low⁶
Audio Frequency Response High⁶
+/-25 kHz
Mono
–3 dB
–3 dB
—
52
—
dB
—
45
—
dB
—
—
300
Hz
3
—
—
kHz
Notes:
1. To ensure proper operation and receiver performance, follow the guidelines in “AN383: Universal Antenna Selection
and Layout Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers.
2. F_MOD = 1 kHz.
3. f = 3 kHz.
4. V_EMF = 1 mV.
5. A-weighted.
6. Guaranteed by characterization
Rev. 1.0
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