SI4123 SILABS [Silicon Laboratories], SI4123 Datasheet - Page 29

• Manufacturer Part Number: SI4123
• Description: DUAL-BAND RF SYNTHESIZER WITH INTEGRATED VCOS FOR WIRELESS COMMUNICATIONS
• Manufacturer: SILABS [Silicon Laboratories]

6. Pin Descriptions: Si4133-GM
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Name
GNDR
RFLD
RFLC
GNDR
RFLB
RFLA
GNDR
GNDR
GNDR
RFOUT
VDDR
AUXOUT
PWDN
GNDD
XIN
GNDD
VDDD
GNDD
IFLA
IFLB
GNDI
GNDI
IFOUT
VDDI
SEN
SCLK
SDATA
GNDR
Description
Common ground for RF analog circuitry
Pins for inductor connection to RF2 VCO
Pins for inductor connection to RF2 VCO
Common ground for RF analog circuitry
Pins for inductor connection to RF1 VCO
Pins for inductor connection to RF1 VCO
Common ground for RF analog circuitry
Common ground for RF analog circuitry
Common ground for RF analog circuitry
Radio frequency (RF) output of the selected RF VCO
Supply voltage for the RF analog circuitry
Auxiliary output
Powerdown input pin
Common ground for digital circuitry
Reference frequency amplifier input
Common ground for digital circuitry
Supply voltage for digital circuitry
Common ground for digital circuitry
Pins for inductor connection to IF VCO
Pins for inductor connection to IF VCO
Common ground for IF analog circuitry
Common ground for IF analog circuitry
Intermediate frequency (IF) output of the IF VCO
Supply voltage for IF analog circuitry
Enable serial port input
Serial clock input
Serial data input
Common ground for RF analog circuitry
GNDR
GNDR
GNDR
RFLD
RFLC
RFLB
RFLA
1
2
3
4
5
6
7
28 27 26 25 24 23 22
8
9
Rev. 1.61
10 11 12 13 14
GND
Pad
21
20
19
18
17
16
15
GNDI
IFLB
IFLA
GNDD
VDDD
GNDD
XIN
Si4133
29