参数资料
型号: ADRF6704ACPZ
厂商: ANALOG DEVICES INC
元件分类: 调制器/解调器
英文描述: 2500 MHz - 2900 MHz RF/MICROWAVE I/Q MODULATOR
封装: 6 X 6 MM, ROHS COMPLIANT, MO-220VJJD-2, LFCSP_VQ, CP-40-1, 40 PIN
文件页数: 4/18页
文件大小: 581K
代理商: ADRF6704ACPZ
ADRF6704
Preliminary Technical Data
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
0
FD10
FD9
FD8
FD7
FD6
FD5
FD4
FD3
FD2
FD1
FD0
Fractional Divide Ratio
FD7
FD6
FD5
FD4
FD3
FD2
FD1
FD0
Fractional Value
0
1
-
0
1
0
768
(
default)
-
<MDR
Fractional Value must be less than Modulus
FD10
FD9
FD8
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
FD10
FD9
FD8
FD7
FD6
FD5
FD4
FD3
FD2
FD1
FD0
C3(0)
C2(1)
C1(0)
Control Bits
Fractional Divide Ratio
FD10
FD9
FD8
FD7
FD6
FD5
FD4
FD3
FD2
FD1
FD0
Fractional Value
0
1
-
0
1
0
768
(
default)
-
<MDR
Fractional Value must be less than Modulus
Figure 7. Fractional Divide Control Register (R2)
REGISTER 2—FRACTIONAL DIVIDE CONTROL
The FRAC value is the preset fractional modulus ranging from 0
to MOD-1.
With R2[2:0] set to 010, the on-chip fractional divide control
register is programmed as shown in figure 41.
Dither
Enable
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
0
DITH1
DITH0
DEN
DV16
DV15
DV14
DV13
DV12
DV11
DV10
DV9
DV8
DV7
DV6
DV5
DV4
DV3
DV2
DV1
DV0
Dither Restart Value
Dither
Magnitude
DEN
Dither Enable
0
Disable (recommended)
1
Enable (default)
DITH1
DITH0
Dither Magnitude
0
15 (default)
0
1
7
1
0
3
1
1 (recommended)
DV16
DV15
DV14
DV13
DV12
DV11
DV10
DV9
DV8
DV7
DV6
DV5
DV4
DV3
DV2
DV1
DV0
Dither Restart Value
0
1
0x00001 (default)
'
' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
'
' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
1
0x1FFFF
Dither
Enable
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
DITH1
DITH0
DEN
DV16
DV15
DV14
DV13
DV12
DV11
DV10
DV9
DV8
DV7
DV6
DV5
DV4
DV3
DV2
DV1
DV0
C3(0)
C2(1)
C1(1)
Control Bits
Dither Restart Value
Dither
Magnitude
DEN
Dither Enable
0
Disable (recommended)
1
Enable (default)
DITH1
DITH0
Dither Magnitude
0
15 (default)
0
1
7
1
0
3
1
1 (recommended)
DV16
DV15
DV14
DV13
DV12
DV11
DV10
DV9
DV8
DV7
DV6
DV5
DV4
DV3
DV2
DV1
DV0
Dither Restart Value
0
1
0x00001 (default)
'
' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
'
' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
1
0x1FFFF
Figure 8. Sigma Delta Modulator Dither Control Register (R3)
REGISTER 3—SIGMA DELTA MODULATOR DITHER
CONTROL
With R3[2:0] set to 011, the on-chip sigma delta modulator
dither control register is programmed as shown in figure 42.
The dither restart value can be programmed from 0 to 217-1,
though a value of 1 is typically recommended.
Rev. PrE | Page 12 of 18
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