STW81101AT STMicroelectronics, STW81101AT Datasheet - Page 34

• Manufacturer Part Number: STW81101AT
• Description: IC SYNTHESIZER MULTI RF 28VFQFPN
• Manufacturer: STMicroelectronics
• Type: Frequency Synthesizer (RF)r

Specifications of STW81101AT

• Pll: Yes
• Input: Clock, Crystal
• Output: Clock, Crystal
• Number Of Circuits: 1
• Ratio - Input:output: 3:2
• Differential - Input:output: No/No
• Frequency - Max: 4.4GHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-VFQFN, 28-VFQFPN
• Frequency-max: 4.4GHz
• Number Of Elements: 1
• Pll Input Freq (min): 10MHz
• Pll Input Freq (max): 200MHz
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: VFQFPN
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Industrial
• Pin Count: 28
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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C bus interface
and P is the selected prescaler modulus.
CALIBRATION
This register controls the VCO calibrator using the following values:
INITCAL:
SERCAL:
SELEXTCAL:
CAL[4:0]:
Read-only register
This register is automatically addressed in the 'current byte address read mode', using the
following values:
DEV_ID[1:0]:
LOCK_DET:
INTCAL[4:0]:
Default configuration
At power on, all the bits are set to '0'. Consequently the part starts in power down mode.
INITCAL
DEV_ID1
MSB
b7
MSB
b7
SERCAL
b6
for test purposes only; must be set to 0
at 1, starts the VCO auto-calibration (automatically reset to 0 at the end of
calibration)
for test purposes only; must be set to 0
for test purposes only; must be set to 0
device identifier bits; returns 00
1 when PLL is locked
internal value of the VCO control word
DEV_ID0
b6
SELEXTCAL
b5
LOCK_DET INTCAL4 INTCAL3 INTCAL2 INTCAL1 INTCAL0
b5
CAL4
b4
b4
CAL3
b3
b3
CAL2
b2
b2
CAL1
b1
b1
STW81101
CAL0
LSB
LSB
b0
b0