- 您现在的位置：买卖IC网 > PDF目录16558 > EV-ADF4106SD1Z (Analog Devices Inc)BOARD EVAL FOR ADF4106SD1Z PDF资料下载
参数资料
| 型号： | EV-ADF4106SD1Z |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADF4106SD1Z |
| 标准包装： | 1 |
| 系列： | * |
Data Sheet
ADF4106
Rev. E | Page 11 of 24
PHASE FREQUENCY DETECTOR (PFD) AND
CHARGE PUMP
The PFD takes inputs from the R counter and N counter
(N = BP + A) and produces an output proportional to the
phase and frequency difference between them. Figure 20 is a
simplified schematic. The PFD includes a programmable delay
element that controls the width of the antibacklash pulse. This
pulse ensures that there is no dead zone in the PFD transfer
function and minimizes phase noise and reference spurs. Two
bits in the reference counter latch, ABP2 and ABP1, control the
width of the pulse. See Table 7.
HI
D1
D2
Q1
Q2
CLR2
CP
U1
U2
UP
DOWN
ABP2
ABP1
CPGND
U3
R DIVIDER
PROGRAMMABLE
DELAY
N DIVIDER
VP
CHARGE
PUMP
02720-020
CLR1
Figure 20. PFD Simplified Schematic
MUXOUT AND LOCK DETECT
The output multiplexer on the ADF4106 allows the user
to access various internal points on the chip. The state of
MUXOUT is controlled by M3, M2, and M1 in the function
latch. Table 9 shows the full truth table. Figure 21 shows the
MUXOUT section in block diagram form.
Lock Detect
MUXOUT can be programmed for two types of lock detect:
digital lock detect and analog lock detect.
Digital lock detect is active high. When LDP in the R counter
latch is set to 0, digital lock detect is set high when the phase
error on three consecutive phase detector cycles is less than
15 ns. With LDP set to 1, five consecutive cycles of less than
15 ns are required to set the lock detect. It stays set high until a
phase error of greater than 25 ns is detected on any subsequent
PD cycle.
The N-channel, open-drain, analog lock detect should be
operated with an external pull-up resistor of 10 k nominal.
When lock is detected, this output is high with narrow, low-
going pulses.
02720-021
DGND
DVDD
CONTROL
MUX
ANALOG LOCK DETECT
DIGITAL LOCK DETECT
R COUNTER OUTPUT
N COUNTER OUTPUT
SDOUT
MUXOUT
Figure 21. MUXOUT Circuit
INPUT SHIFT REGISTER
The ADF4106 digital section includes a 24-bit input shift
register, a 14-bit R counter, and a 19-bit N counter, comprising a
6-bit A counter and a 13-bit B counter. Data is clocked into the
24-bit shift register on each rising edge of CLK. The data is
clocked in MSB first. Data is transferred from the shift register
to one of four latches on the rising edge of LE. The destination
latch is determined by the state of the two control bits (C2, C1)
in the shift register. These are the two LSBs, DB1 and DB0, as
shown in the timing diagram of Figure 2. The truth table for
these bits is shown in Table 5. Table 6 shows a summary of how
the latches are programmed.
Table 5. C1, C2 Truth Table
Control Bits
C2
C1
Data Latch
0
R Counter
0
1
N Counter (A and B)
1
0
Function Latch (Including Prescaler)
1
Initialization Latch
相关PDF资料 |
PDF描述 |
|---|---|
| EBC36DRTS-S13 | CONN EDGECARD 72POS .100 EXTEND |
| HBM12DRKH | CONN EDGECARD 24POS DIP .156 SLD |
| V48C24T75BF3 | CONVERTER MOD DC/DC 24V 75W |
| TCM809MVNB713 | IC RESET MONITOR 4.38V SOT23B-3 |
| EV-ADF4156SD1Z | BOARD EVAL FOR ADF4156 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EV-ADF4108EB1Z | 功能描述:BOARD EVAL FOR ADF4108EB1Z 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-ADF4108EB2Z | 功能描述:BOARD EVAL FOR ADF4108EB2Z 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-ADF4113HVSD1Z | 功能描述:时钟和定时器开发工具 Evaluation Board I.C. ADF4113HV RoHS:否 制造商:Texas Instruments 产品:Evaluation Modules 类型:Clock Conditioners 工具用于评估:LMK04100B 频率:122.8 MHz 工作电源电压:3.3 V |
| EV-ADF411XSD1Z | 功能描述:时钟和定时器开发工具 Evaluation Board I.C. RoHS:否 制造商:Texas Instruments 产品:Evaluation Modules 类型:Clock Conditioners 工具用于评估:LMK04100B 频率:122.8 MHz 工作电源电压:3.3 V |
| EV-ADF4153ASD1Z | 功能描述:时钟和定时器开发工具 Evaluation Board RoHS:否 制造商:Texas Instruments 产品:Evaluation Modules 类型:Clock Conditioners 工具用于评估:LMK04100B 频率:122.8 MHz 工作电源电压:3.3 V |
发布紧急采购，3分钟左右您将得到回复。