参数资料
| 型号： | ADF4151BCPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/28页 |
| 文件大小： | 0K |
| 描述： | IC PLL FREQ SYNTHESIZER 32LFCSP |
| 标准包装： | 1 |
| 类型： | * |
| PLL： | 是 |
| 输入： | CMOS，TTL |
| 输出： | 时钟 |
| 电路数： | 1 |
| 比率 - 输入:输出： | 2:1 |
| 差分 - 输入:输出： | 是/无 |
| 频率 - 最大： | 3.5GHz |
| 除法器/乘法器： | 是/是 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-WQ（5x5） |
| 包装： | 托盘 |
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Data Sheet
ADF4151
Rev. B | Page 19 of 28
REGISTER 3
Control Bits
With Bits[C3:C1] set to 0, 1, 1, Register 3 is programmed.
Figure 22 shows the input data format for programming
this register.
Antibacklash Pulse Width
Setting DB22 to 0 sets the PFD antibacklash pulse width to 6 ns.
This is the recommended mode for fractional-N use. By setting
this bit to 1, the 3 ns pulse width is used and results in a phase
noise and spur improvement in integer-N operation. For
fractional-N mode it is not recommended to use this smaller
setting.
Charge Cancellation Mode Pulse Width
Setting DB21 to 1 enables charge pump charge cancellation.
This has the effect of reducing PFD spurs in integer-N mode.
In fractional-N mode, this bit should not be used. This results
in a phase noise and fractional spur improvement.
Cycle Slip Reduction (CSR) Enable
Setting DB18 to 1 enables cycle slip reduction. This is a method
for improving lock times. Note that the signal at the phase fre-
quency detector (PFD) must have a 50% duty cycle for cycle slip
reduction to work. The charge pump current setting must also
be set to a minimum. See the Cycle Slip Reduction for Faster
Lock Times section for more information.
Clock Divider Mode
Bits[DB16:DB15] must be set to 1, 0 to activate phase resync or
0, 1 to activate fast lock. Setting Bits[DB16:DB15] to 0, 0
disables the clock divider. See Figure 22.
12-Bit Clock Divider Value
The 12-bit clock divider value sets the timeout counter for
activation of phase resync. See the Phase Resync section for
more information. It also sets the timeout counter for fast lock.
See the Fast Lock Timer and Register Sequences section for
more information.
REGISTER 4
Control Bits
With Bits[C3: C1] set to 1, 0, 0, Register 4 is programmed.
Figure 23 shows the input data format for programming this
register.
This register is reserved and has to be programmed with the
values as shown in Figure 23. Bits[DB31:DB24] and [DB22:DB3]
must be programmed to 0, while Bit DB23 must be set to 1.
REGISTER 5
Control Bits
With Bits[C3:C1] set to 1, 0, 1, Register 5 is programmed.
Figure 24 shows the input data form for programming this
register.
Lock Detect PIN Operation
Bits[DB23:DB22] set the operation of the lock detect pin (see
INITIALIZATION SEQUENCE
The following sequence of registers is the correct sequence for
initial power up of the ADF4151 after the correct application
of voltages to the supply pins:
1. Register 5
2. Register 4
3. Register 3
4. Register 2
5. Register 1
6. Register 0
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相关代理商/技术参数 |
参数描述 |
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| ADF4151BCPZ-RL7 | 功能描述:IC FRACTION-N FREQ SYNTH 32LFCSP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:- 标准包装:1,000 系列:Precision Edge® 类型:时钟/频率合成器 PLL:无 输入:CML，PECL 输出:CML 电路数:1 比率 - 输入:输出:2:1 差分 - 输入:输出:是/是 频率 - 最大:10.7GHz 除法器/乘法器:无/无 电源电压:2.375 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VFQFN 裸露焊盘，16-MLF? 供应商设备封装:16-MLF?（3x3） 包装:带卷 (TR) 其它名称:SY58052UMGTRSY58052UMGTR-ND |
| ADF4152HVBCPZ | 功能描述:IC FRACTION-N FREQ SYNTH 32LFCSP 制造商:analog devices inc. 系列:- 包装:托盘 零件状态:在售 类型:* PLL:是 输入:CMOS 输出:时钟 电路数:1 比率 - 输入:输出:2:2 差分 - 输入:输出:是/无 频率 - 最大值:5GHz 分频器/倍频器:是/是 电压 - 电源:3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:32-VFQFN 裸露焊盘，CSP 供应商器件封装:32-LFCSP-VQ（5x5） 标准包装:1 |
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