SI4709-B-GM Silicon Laboratories Inc, SI4709-B-GM Datasheet - Page 11

• Manufacturer Part Number: SI4709-B-GM
• Description: IC FM RADIO TUNER 20-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: -r

Specifications of SI4709-B-GM

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Table 7. FM Receiver Characteristics
(V
Parameter
Mono/Stereo Switching Level
Audio Mono S/N
Audio Stereo S/N
Audio THD
De-emphasis Time Constant
Audio Common Mode Voltage
Audio Common Mode Voltage
Audio Output Load Resistance
Audio Output Load Capacitance
Seek/Tune Time
Powerup Time
RSSI Offset
Notes:
D
= V
1. Additional testing information is available in Application Note AN388. Volume = maximum for all tests.
2. Important Note: To ensure proper operation and FM receiver performance, follow the guidelines in “AN350: Si4708/09
3. F
4. MONO = 1, and L = R unless noted otherwise.
5. f = 22.5 kHz.
6. B
7. Typical sensitivity with headphone matching network.
8. Guaranteed by characterization.
9. V
10. |f
11. The channel spacing is selected with the SPACE[1:0] bits. Refer to "6. Register Descriptions" on page 20. Seek/Tune
12. f = 75 kHz.
13. The de-emphasis time constant is selected with the DE bit. Refer to "6. Register Descriptions" on page 20.
14. At LOUT and ROUT pins.
15. Do not enable STC interrupts before the powerup time is complete. If STC interrupts are enabled before the powerup
16. Minimum and maximum at room temperature (25 °C).
A
Antenna, Schematic, Layout, and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for
qualified customers.
20.
timing is guaranteed for 100 and 200 kHz channel spacing. ±50 ppm PCLK tolerance required for 50 kHz channel
spacing.
time is complete, an interrupt will be generated within the powerup interval when the initial default tune operation is
complete. See "AN349: Si4708/09 Programming Guide" for more information.
= 2.7 to 5.5 V, V
MOD
2
AF
EMF
– f
= 300 Hz to 15 kHz, A-weighted.
3,4,9,12
1
16
= 1 mV.
= 1 kHz, 75
| > 1 MHz,
15
3,4,5,6,9
8,11
3,5,6,8
IO
f
0
µ
s de-emphasis
= 1.5 to 3.6 V, T
= 2 x f
13
3,8,12
14
14
8,14
1
8,14
– f
2
. AGC
A
Symbol
= –20 to 85 °C)
1,2
R
C
is disabled by setting AGCD = 1. Refer to "6. Register Descriptions" on page
L
L
(Continued)
Confidential Rev. 1.4
10 dB stereo separation
(Write ENABLE bit to 1)
tolerance = 200 ppm,
Input levels of 8 and
60 dBµV at RF input
SPACE[1:0] = 0x,
From powerdown
Test Condition
BLNDADJ = 10
BLNDADJ = 10
Single-ended
Single-ended
ENABLE = 1
ENABLE = 0
AHIZEN = 1
(x = 0 or 1)
DE = 0
DE = 1
RCLK
0.65
Min
55
70
45
10
—
–3
—
—
—
—
—
—
0.5 x V
Typ
Si4708/09-B
0.1
0.8
34
60
58
75
50
—
—
—
—
—
IO
Max
110
0.5
0.9
80
54
50
60
—
—
—
—
—
3
dBµVEMF
channel
Unit
ms/
dB
dB
k
ms
dB
pF
µs
µs
%
V
V
11