STW81101AT STMicroelectronics, STW81101AT Datasheet - Page 37

• 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
7.2
Table 19.
Table 20.
Timing specification
Figure 27. SPI timing specification
Table 21.
Address
A1 A0 D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
MSB
Parameter
A1
Clock
t
0
0
1
1
Load
t
Data
Address
clk_loadr
clk_loadf
t
t
t
setup
hold
t
load
clk
A0
0
1
0
1
SPI data structure (MSB is sent first)
Address decoder and outputs
SPI timing specification
tsetup
Data to clock setup time
Data to clock hold time
Clock cycle period
Load pulse width
Clock to load rising edge
Clock to load falling edge
Data bits
D23-D0
MSB
thold
24
24
24
24
tdk
Description
MSB-1
No
0
1
2
3
Name
ST1
ST2
ST3
ST4
Data for register (24 bits)
Reference divider, VCO amplitude, VCO calibration,
charge pump current, prescaler modulus
Functional modes, VCO dividers
Reserved
Reserved
LSB
Outputs
Min.
0.8
0.2
0.5
10
3
2
t
clk_loadr
Function
Typ.
SPI digital interface
tload
Max.
t
clk_loadf
Unit
ns
ns
ns
ns
ns
ns
LSB
37/53