STW81101AT STMicroelectronics, STW81101AT Datasheet - Page 47

• 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

STW81101
9
Figure 36. Typical application diagram
Note:
RF Out
1
2
3
4
1n
1n
Application diagrams
See
EXT_PD, ADD2, ADD1 (and ADD0 when the I
on the board.
Loop filter values are for F
For best performance VDD
Chapter 8: Application information
22p
22p
VDD 1
loop filter
VDD 1
10
10
VDD 1
VDD 1
270p
VDD_VCOB
OUTBUFP
OUTBUFN
VDD_VCOA
VDD_DIV4
VDD_DIV2
VDD_OUTBUF
STEP
1
2.2K
must be a low noise supply (20 µV
2.7n
From/to microcontroller
= 200 kHz.
8.2K
STW81103
68p
STW81101
100
for further information on output matching topology.
15p
4.7K
100
2
15p
1n
C bus is selected) can be hard wired directly
100
15p
22p
VDD 1
VDD_BUFVCO
EXTVCO_INN
EXTVCO_INP
VDD_PLL
REF_CLK
10µ
DBUS_SEL
TEST2
RMS
to microcontroller
I2C
SPI
in 10 Hz-100 kHz BW).
Application diagrams
1n
1.8n
VDD 2
22p
ref clk
51
10
47/53