SI4734-D60-GU Просмотр технического описания (PDF) - Silicon Laboratories

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SI4734-D60-GU

BROADCAST AM/FM/SW/LW RADIO RECEIVER

Silicon Laboratories 

Si4730/31/34/35-D60

Table 7. FM Receiver Characteristics1,2 (Continued)

(VA = 2.7 to 5.5 V, VD = 1.62 to 3.6 V, TA = –20 to 85 °C)

Parameter

Intermod Sensitivity3,4,5,6,7,11,12

Symbol

Test Condition

Min Typ Max

f = ±400 kHz, ±800 kHz —

40

—

Unit

dBµV

f = ±4 MHz, ±8 MHz

—

35

—

dBµV

Audio Output Load Resistance7,11,14 RL

Audio Output Load

Capacitance7,11,14

CL

Seek/Tune Time7

Single-ended

Single-ended

RCLK tolerance

= 100 ppm

10

—

—

k

—

—

50

pF

—

—

60 ms/channel

Powerup Time7

From powerdown

—

—

110

ms

RSSI Offset12,13

Input levels of 8 and

–3

—

3

dB

60 dBµV at RF Input

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. FMOD = 1 kHz, 75 µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.

4. f = 22.5 kHz.

5. BAF = 300 Hz to 15 kHz, A-weighted.

6. Analog audio output mode.

7. Guaranteed by characterization.

8. VEMF = 1 mV.

9. |f2 – f1| > 2 MHz, f0 = 2 x f1 – f2. AGC is disabled.

10. f = 75 kHz.

11. Sensitivity measured at (S+N)/N = 26 dB.

12. Blocker Amplitude = 100 dBuV.

13. At temperature (25 °C).

14. At LOUT and ROUT pins.

14

Rev. 1.1

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