SI4123-EVB Silicon Laboratories Inc, SI4123-EVB Datasheet - Page 20
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SI4123-EVB
Manufacturer Part Number
SI4123-EVB
Description
BOARD EVALUATION FOR SI4123
Manufacturer
Silicon Laboratories Inc
Type
Synthesizerr
Specifications of SI4123-EVB
Contents
Board and CD-ROM
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
SI4123
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