ADF4156BRUZ-RL Analog Devices Inc, ADF4156BRUZ-RL Datasheet - Page 12

• Manufacturer Part Number: ADF4156BRUZ-RL
• Description: IC,FREQUENCY SYNTHESIZER,CMOS,TSSOP,16PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Type: Fractional N Synthesizer (RF)r

Specifications of ADF4156BRUZ-RL

• Design Resources: Low-Noise Microwave fractional-N PLL using active loop filter and RF prescaler (CN0174)
• Pll: Yes
• Input: CMOS
• Output: Clock
• Number Of Circuits: 1
• Ratio - Input:output: 2:1
• Differential - Input:output: Yes/No
• Frequency - Max: 6GHz
• Divider/multiplier: Yes/Yes
• Voltage - Supply: 2.7 V ~ 3.3 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Frequency-max: 6GHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADF4156
PHASE REGISTER, R1
With the control bits (Bits[2:0]) of Register R1 set to 001, the
on-chip phase register is programmed. Figure 18 shows the
input data format for programming this register.
12-Bit Phase Value
These 12 bits control what is loaded as the phase word. The
word must be less than the MOD value programmed in the
MOD/R register (R2). The word is used to program the RF
output phase from 0° to 360° with a resolution of 360°/MOD.
DB31 DB30 DB29 DB28 DB27 DB26 DB25 DB24 DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
0
0
0
0
RESERVED
0
0
0
0
0
Figure 18. Phase Register (R1) Map
0
Rev. A | Page 12 of 24
0
0
0
See the Phase Resync section for more information. In most
applications, the phase relationship between the RF signal and
the reference is not important. In such applications, the phase
value can be used to optimize the fractional and subfractional
spur levels. See the Spur Consistency and Fractional Spur
Optimization section for more information.
If neither the phase resync nor the spurious optimization
functions are being used, it is recommended that the phase
value be set to 1.
P12
P12
0
0
0
0
.
.
.
1
1
1
1
P11
P11
0
0
0
0
.
.
.
1
1
1
1
P10
.......... P2
.......... 0
.......... 0
.......... 1
.......... 1
.......... .
.......... .
.......... .
.......... 0
.......... 0
.......... 1
.......... 1
12-BIT PHASE VALUE (PHASE)
P9
P8
P1
0
1
0
1
.
.
.
0
1
0
1
P7
P6
PHASE VALUE (PHASE)
0
1 (RECOMMENDED)
2
3
.
.
.
4092
4093
4094
4095
P5
P4
P3
P2
P1 C3(0) C2(0) C1(1)
CONTROL
BITS