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AD9850

更新时间: 2024-02-29 09:57:40
品牌 Logo 应用领域
亚德诺 - ADI 数据分配系统
页数 文件大小 规格书
19页 375K
描述
CMOS, 125 MHz Complete DDS Synthesizer

AD9850 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:SSOP
包装说明:SSOP,针数:28
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:0.85
边界扫描:NO最大时钟频率:125 MHz
外部数据总线宽度:8JESD-30 代码:R-PDSO-G28
JESD-609代码:e3长度:10.2 mm
低功率模式:YES湿度敏感等级:1
端子数量:28最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:SSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:2 mm
最大供电电压:5.25 V最小供电电压:4.75 V
标称供电电压:5 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:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:5.3 mm
uPs/uCs/外围集成电路类型:DSP PERIPHERAL, NUMERIC CONTROLLED OSCILLATOR

AD9850 数据手册

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AD9850  
Table I. Lead Function Descriptions  
Pin  
No.  
Mnemonic  
Function  
4–1,  
28–25  
D0–D7  
8-Bit Data Input. This is the 8-bit data port for iteratively loading the 32-bit frequency and 8-bit phase/  
control word. D7 = MSB; D0 = LSB. D7 (Pin 25) also serves as the input pin for the 40-bit serial data word.  
5, 24  
6, 23  
7
DGND  
DVDD  
W_CLK  
FQ_UD  
Digital Ground. These are the ground return leads for the digital circuitry.  
Supply Voltage Leads for digital circuitry.  
Word Load Clock. This clock is used to load the parallel or serial frequency/phase/control words.  
8
Frequency Update. On the rising edge of this clock, the DDS will update to the frequency (or phase)  
loaded in the data input register, it then resets the pointer to Word 0.  
9
CLKIN  
Reference Clock Input. This may be a continuous CMOS-level pulse train or sine input biased at  
1/2 V supply. The rising edge of this clock initiates operation.  
10, 19 AGND  
11, 18 AVDD  
Analog Ground. These leads are the ground return for the analog circuitry (DAC and comparator).  
Supply Voltage for the analog circuitry (DAC and comparator).  
12  
RSET  
This is the DAC’s external RSET connection. This resistor value sets the DAC full-scale output current. For  
normal applications (FS IOUT = 10 mA), the value for RSET is 3.9 kconnected to ground. The RSET/IOUT  
relationship is: IOUT = 32 (1.248 V/RSET).  
13  
14  
15  
16  
17  
QOUTB  
QOUT  
VINN  
Output Complement. This is the comparator’s complement output.  
Output True. This is the comparator’s true output.  
Inverting Voltage Input. This is the comparator’s negative input.  
Noninverting Voltage Input. This is the comparator’s positive input.  
VINP  
DACBL (NC) DAC Baseline. This is the DAC baseline voltage reference; this lead is internally bypassed and should  
normally be considered a “no connect” for optimum performance.  
20  
21  
22  
IOUTB  
IOUT  
The Complementary Analog Output of the DAC.  
Analog Current Output of the DAC.  
RESET  
Reset. This is the master reset function; when set high it clears all registers (except the input register) and  
the DAC output will go to Cosine 0 after additional clock cycles—see Figure 19.  
PIN CONFIGURATIONS  
1
2
D4  
D3  
D2  
28  
27  
D5  
3
D1  
D6  
26  
25  
LSB D0  
DGND  
DVDD  
W CLK  
4
D7 MSB/SERIAL LOAD  
5
24  
23  
DGND  
DVDD  
RESET  
6
AD9850  
7
22  
TOP VIEW  
8
21 IOUT  
FQ UD  
CLKIN  
AGND  
AVDD  
(Not to Scale)  
20  
9
IOUTB  
10  
11  
12  
13  
14  
AGND  
19  
18  
AVDD  
R
DACBL (NC)  
17  
16  
SET  
QOUTB  
QOUT  
VINP  
VINN  
15  
NC = NO CONNECT  
REV. E  
–5–  

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