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参数资料
| 型号： | AD9957BSVZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 27/64页 |
| 文件大小： | 0K |
| 描述： | IC DDS 1GSPS 14BIT IQ 100TQFP |
| 产品培训模块： | Direct Digital Synthesis Tutorial Series (1 of 7): Introduction Direct Digital Synthesizer Tutorial Series (7 of 7): DDS in Action Direct Digital Synthesis Tutorial Series (3 of 7): Angle to Amplitude Converter Direct Digital Synthesis Tutorial Series (6 of 7): SINC Envelope Correction Direct Digital Synthesis Tutorial Series (4 of 7): Digital-to-Analog Converter Direct Digital Synthesis Tutorial Series (2 of 7): The Accumulator |
| 标准包装： | 1,000 |
| 分辨率（位）： | 14 b |
| 主 fclk： | 1GHz |
| 调节字宽（位）： | 32 b |
| 电源电压： | 1.8V, 3.3V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 100-TQFP 裸露焊盘 |
| 供应商设备封装： | 100-TQFP-EP（14x14） |
| 包装： | 带卷 (TR) |
| 配用： | AD9957/PCBZ-ND - BOARD EVAL AD9957 QUADRATURE MOD |
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Data Sheet
AD9957
Rev. C | Page 33 of 64
06384-
026
START ADDRESS
END ADDRESS
1
2
3
4
5
RAM ADRESS
Δt
1 PDCLK CYCLE
OR
M DDS CLOCK CYCLES
I/O_UPDATE OR
RT TRANSITION
Figure 46. Continuous Recirculate Timing Diagram
RAM Continuous Recirculate Mode
The continuous recirculate mode mimics ramp-up mode,
except that when the state machine reaches the end address of
the active RAM segment register, it does not halt. Instead, the
next timeout of the internal timer causes the state machine to
jump to the start address of the active RAM segment register.
This process continues indefinitely until an I/O update or state
change on the RT pin. A state change on the RT pin aborts the
current waveform and the newly selected RAM segment register
initiates a new waveform.
A graphic representation of the continuous recirculate mode is
shown in Figure 46.
The circled numbers in Figure 46 indicate specific events, which
are explained as follows:
Event 1—an I/O update or state change on the RT pin occurs.
This initializes the state machine to the start address of the
active RAM segment register and causes the state machine to
begin incrementing the address counter at the appropriate rate.
Event 2—the state machine reaches the end address of the active
RAM segment register.
Event 3—the state machine switches to the start address of the
active RAM segment register. The state machine continues to
increment the address counter.
Event 4—the state machine again reaches the end address of the
active RAM segment register.
Event 5—the state machine switches to the start address of the
active RAM segment register. The state machine continues to
increment the address counter.
Event 4 and Event 5 repeat until an I/O update or state change
occurs on the RT pin.
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相关代理商/技术参数 |
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| AD9957BSVZREEL13 | 制造商:AD 制造商全称:Analog Devices 功能描述:1 GSPS Quadrature Digital Upconverter w/18-Bit IQ Data Path and 14-Bit DAC |
| AD9958 | 制造商:AD 制造商全称:Analog Devices 功能描述:2-Channel 500 MSPS DDS with 10-Bit DACs |
| AD9958 PCB | 制造商:Analog Devices 功能描述:EVAL BOARD ((NS)) |
| AD9958/PCB | 制造商:Analog Devices 功能描述:Evaluation Board For 2-Channel 500 MSPS DDS With 10-Bit DACs 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述:IC 10-BIT DAC DDS |
| AD9958/PCBZ | 功能描述:BOARD EVALUATION FOR AD9958 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:AgileRF™ 标准包装:1 系列:PSoC® 主要目的:电源管理，热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板，CD，电源 |
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