Datasheet > AD9951

AD9951

更新时间： 2024-01-21 21:02:49

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	789K
描述
400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer

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中文翻译

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技术参数
数据手册

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AD9951 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFP
包装说明：	HTFQFP,	针数：	48
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.6
边界扫描：	NO	最大时钟频率：	400 MHz
JESD-30 代码：	S-PQFP-G48	JESD-609代码：	e3
长度：	7 mm	低功率模式：	YES
湿度敏感等级：	3	端子数量：	48
最高工作温度：	105 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	HTFQFP
封装形状：	SQUARE	封装形式：	FLATPACK, HEAT SINK/SLUG, THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1.2 mm	最大供电电压：	1.89 V
最小供电电压：	1.71 V	标称供电电压：	1.8 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	40
宽度：	7 mm	uPs/uCs/外围集成电路类型：	DSP PERIPHERAL, NUMERIC CONTROLLED OSCILLATOR
Base Number Matches：	1

AD9951 数据手册

AD9951

When the CFR1<3> bit is 0 and the PWRDWNCTL input pin is

high, the AD9951 is put into a fast recovery power-down mode.

In this mode, the digital logic and the DAC digital logic are

powered down. The DAC bias circuitry, PLL, oscillator, and

clock input circuitry is NOT powered down.

Table 8 indicates the logic level for each power-down bit that

drives out of the AD9951 core logic to the analog section and

the digital clock generation section of the chip for the external

power-down operation.

Layout Considerations

For the best performance, the following layout guidelines

should be observed. Always provide the analog power supply

(AVDD) and the digital power supply (DVDD) on separate

supplies, even if just from two different voltage regulators

driven by a common supply. Likewise, the ground connections

(AGND, DGND) should be kept separate as far back to the

source as possible (i.e., separate the ground planes on a local-

ized board, even if the grounds connect to a common point in

the system). Bypass capacitors should be placed as close to the

device pin as possible. Usually, a multitiered bypassing scheme

consisting of a small high frequency capacitor (100 pF) placed

close to the supply pin and progressively larger capacitors (0.1 µF,

10 µF) further away from the actual supply source works best.

When the CFR1<3> bit is high, and the PWRDWNCTL input

pin is high, the AD9951 is put into the full power-down mode.

In this mode, all functions are powered down. This includes the

DAC and PLL, which take a significant amount of time to

power up.

When the PWRDWNCTL input pin is high, the individual

power-down bits (CFR1<7>, <5:4>) are invalid (Don’t Care)

and unused. When the PWRDWNCTL input pin is low, the

individual power-down bits control the power-down modes of

operation.

Note that the power-down signals are all designed such that a

Logic 1 indicates the low power mode and a Logic 0 indicates

the active or powered up mode.

Table 8. Power-Down Control Functions

Control

Mode Active

Description

PWRDWNCTL = 0 CFR1<3> Don’t Care

Software Control

Digital Power-Down = CFR1<7>

DAC Power-Down = CFR1<5>

Input Clock Power-Down = CFR1<4>

Digital Power-Down = 1’b1

PWRDWNCTL = 1 CFR1<3> = 0

PWRDWNCTL = 1 CFR1<3> = 1

External Control,

Fast Recovery Power-Down Mode

DAC Power-Down = 1’b0

Input Clock Power-Down = 1’b0

Digital Power-Down = 1’b1

DAC Power-Down = 1’b1

External Control,

Full Power-Down Mode

Input Clock Power-Down = 1’b1

Rev. 0 | Page 23 of 28

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中文翻译

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与AD9951相关器件

型号	品牌	获取价格	描述	数据表
AD9951ASV	ADI	获取价格	IC DSP-NUM CONTROLLED OSCILLATOR, PQFP48, TQFP-48, DSP Peripheral
AD9951PCB	ADI	获取价格	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9951YSV	ADI	获取价格	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9951YSV-REEL7	ADI	获取价格	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9951YSVZ	ADI	获取价格	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9951YSVZ-REEL7	ADI	获取价格	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9952	ADI	获取价格	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9952YSV	ADI	获取价格	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9952YSV-REEL7	ADI	获取价格	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9952YSVZ	ADI	获取价格	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer

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