SI4133W-BM Silicon Laboratories Inc, SI4133W-BM Datasheet - Page 20

• Manufacturer Part Number: SI4133W-BM
• Description: IC SYNTHESIZER RF DUALBAND 28MLP
• Manufacturer: Silicon Laboratories Inc
• Type: Frequency Synthesizerr

Specifications of SI4133W-BM

• Pll: Yes
• Input: Clock
• Output: Clock
• Number Of Circuits: 1
• Ratio - Input:output: 1:2
• Differential - Input:output: No/No
• Frequency - Max: 2.6GHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Frequency-max: 2.6GHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 336-1115

Si4133W
will be powered down regardless of the Powerdown
register settings. When the PWDNB pin is high, power
management is under control of the Powerdown register
bits.
The reference frequency amplifier, IF, and RF sections of
the Si4133W circuitry can be individually powered down by
setting the Power Down register bits PDIB and PDRB low.
Also, setting the AUTOPDB bit to 1 in the Main
Configuration register (Register 0) is equivalent to setting
both bits in the Powerdown register to 1. The serial
interface remains available and can be written in all power
down modes.
When multiple Si4133Ws are driven by a single
reference oscillator, as in variable duplex W-CDMA
20
PWDNB Pin
PWDNB = 0
PWDNB = 1
AUTOPDB
Table 10. Power Down Configuration
X
0
0
0
0
1
PDIB
X
0
0
1
1
x
Rev. 1.1
applications, additional bits may be set in the control
registers to prevent unwanted interaction during power
down. For further information please refer to Application
Note 44.
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 11b. This signal can be used to indicate that the IF
or RF PLL is about to lose lock due to excessive ambient
temperature drift and should be re-tuned.
PDRB
X
0
1
0
1
x
IF Circuitry
OFF
OFF
OFF
ON
ON
ON
Circuitry
OFF
OFF
OFF
ON
ON
ON
RF