American Audio B20 Bedienungsanleitung PDF herunterladen (Seite 12)

Si473x-B20

12 Rev. 0.5

Seek/Tune Time

RCLK tolerance

=100ppm

— — 80 ms/channel

Powerup Time

From powerdown — — 110 ms

RSSI Offset

Input levels of 8 and

60 dBµV at RF Input

–3 — 3 dB

Table 7. FM Receiver Characteristics

1,2

(Continued)

= 2.7 to 5.5 V, V

= 1.5 to 3.6 V, T

= –20 to 85 °C)

Parameter Symbol Test Condition Min Typ Max Unit

Notes:

1. Additional testing information is available in “AN388: Si470x/1x/2x/3x/4x Evaluation Test Board 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. F

MOD

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

4. f = 22.5 kHz.

5. B

= 300 Hz to 15 kHz, A-weighted.

6. Guaranteed by characterization.

7. V

EMF

=1 mV.

8. |f

– f

| > 2 MHz, f

=2xf

– f

. AGC is disabled.

9. f = 75 kHz.

10. At L

OUT

and R

OUT

pins.

11. Analog audio output mode.

12. At temperature (25°C).

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 23 24

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