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参数资料
| 型号： | EV-ADF4157SD1Z |
| 厂商： | Analog Devices Inc |
| 文件页数： | 9/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADF4157 |
| 标准包装： | 1 |
| 主要目的： | 计时，频率合成器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADF4157 |
| 主要属性： | 单路分数-N PLL |
| 次要属性： | 6GHz |
| 已供物品： | 板 |
Data Sheet
ADF4157
Rev. D | Page 17 of 24
TEST REGISTER (R4) MAP
With R4[2:0] set to 100, the on-chip test register (R4) is
programmed as shown in Figure 21.
Negative Bleed Current
Setting Bits DB[24:23] to 11 turns on the constant negative
bleed current. This ensures that the charge pump operates out
of the dead zone. Thus the phase noise is not degraded and the
level of spurs is lower. Enabling constant negative bleed current
is particularly important on channels close to multiple PFD
frequencies.
CLK Divider Mode
Setting Bits DB[20:19] to 01 enables switched R fastlock.
12-Bit Clock Divider Value
Bits DB[18:7] are used to program the clock divider, which
determines for how long the loop remains in wideband mode
while the switched R fastlock technique is used.
Reserved Bits
All reserved bits should be set to 0 for normal operation.
DB31
12-BIT CLOCK DIVIDER VALUE
RESERVED
R
ESER
VED
CONTROL
BITS
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
NB2
NB1
0
C2
C1
D12
D11 D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
C3(1) C2(0) C1(0)
05874-
015
NB2
NB1
NEGATIVE BLEED CURRENT
0
OFF
1
ON
D12
D11
.......... D2
D1
CLOCK DIVIDER VALUE
0
.......... 0
0
.......... 0
1
0
.......... 1
0
2
0
.......... 1
1
3
.
.......... .
.
.......... .
.
.......... .
.
1
.......... 0
0
4092
1
.......... 0
1
4093
1
.......... 1
0
4094
1
.......... 1
1
4095
C2
C1
CLOCK DIVIDER MODE
0
CLOCK DIVIDER OFF
0
1
SWITCHED R FASTLOCK ENABLE
0
NEG
BLEED
CURR-
ENT
CLK
DIV
MODE
Figure 21. Test Register (R4) Map
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相关代理商/技术参数 |
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| EV-ADF4159EB1Z | 制造商:Analog Devices 功能描述:EVALUATION BOARD - Boxed Product (Development Kits) 制造商:Analog Devices 功能描述:EVAL BOARD FOR ADF4159 |
| EV-ADF4159EB2Z | 制造商:Analog Devices 功能描述:13GHZFRAC-NPLL+ADF55XXVCO+3VADM - Boxed Product (Development Kits) |
| EV-ADF4159EB3Z | 制造商:Analog Devices 功能描述:EVALUATIONBOARD - Boxed Product (Development Kits) 制造商:Analog Devices 功能描述:EVAL BOARD FOR ADF4159 制造商:Analog Devices 功能描述:Clock & Timer Development Tools ADF4159 EVAL BRD |
| EV-ADF4360-0EB1Z | 功能描述:BOARD EVAL FOR ADF4360-0 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| EV-ADF4360-1EB1Z | 功能描述:BOARD EVAL FOR ADF4360-1 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
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