SI4825-A10 Datasheet, PDF (13/21 Pages) Silicon Laboratories – BROADCAST MECHANICAL TUNING AM/FM/SW RADIO RECEIVER

5. Pin Descriptions: Si4825-A10
Si4825-A10
LNA_EN
1
TUNE1
2
TUNE2
3
BAND
4
NC
5
FMI
6
RFGND ⁷
AMI
8
16
AOUT
15
GND
14
VDD
13
XTALI
12
XTALO
11
VOL-
10
VOL+
9
RST
Pin Number(s)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Name
LNA_EN
TUNE1
TUNE2
BAND
NC
FMI
RFGND
AMI
RST
VOL+
VOL–
XTALO
XTALI
VDD
GND
AOUT
Enable SW external LNA.
Description
Frequency tuning
Frequency tuning
Band selection and de-emphasis selection
No connect. Leave floating.
FM RF inputs. FMI should be connected to the antenna trace.
RF ground. Connect to ground plane on PCB.
AM RF input. AMI should be connected to the AM antenna.
Device reset (active low) input
Volume button up
Volume button down
Crystal oscillator output
Crystal oscillator input/external reference clock input
Supply voltage. May be connected directly to battery.
Ground. Connect to ground plane on PCB.
Audio output
Rev. 1.0
13