SI4123-D-GTR Silicon Laboratories Inc, SI4123-D-GTR Datasheet - Page 20
![IC SYNTHESIZER RF1/IF 24TSSOP](/photos/6/54/65473/336-24-tssop_sml.jpg)
SI4123-D-GTR
Manufacturer Part Number
SI4123-D-GTR
Description
IC SYNTHESIZER RF1/IF 24TSSOP
Manufacturer
Silicon Laboratories Inc
Type
Frequency Synthesizerr
Datasheet
1.SI4112-D-GT.pdf
(36 pages)
Specifications of SI4123-D-GTR
Pll
Yes
Input
Clock
Output
Clock
Number Of Circuits
1
Ratio - Input:output
1:2
Differential - Input:output
No/No
Frequency - Max
1.8GHz
Divider/multiplier
Yes/No
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
24-TSSOP
Frequency-max
1.8GHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Si4133
3.10. Auxiliary Output (AUXOUT)
The signal appearing on AUXOUT is selected by setting the AUXSEL bits in the Main Configuration register
(Register 0).
The LDETB signal can be selected by setting the AUXSEL bits to 11. This signal can be used to indicate that the IF
or RF PLL is going to lose lock because of excessive ambient temperature drift and should be re-tuned. The
LDETB signal indicates a logical OR result if both IF and RF are simultaneously generating a signal.
20
450
400
350
300
250
200
150
100
50
0
Figure 18. Typical IF Output Voltage vs. Load Resistance at 550 MHz
0
PWDN Pin
PWDN = 0
PWDN = 1
LPWR=0
200
AUTOPDB
Table 11. Powerdown Configuration
X
0
0
0
0
1
400
PDIB
X
0
0
1
1
x
Rev. 1.61
Load Resistance ()
LPWR=1
600
PDRB
X
0
1
0
1
x
IF Circuitry RF Circuitry
800
OFF
OFF
OFF
ON
ON
ON
1000
OFF
OFF
OFF
ON
ON
ON
1200