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| 型号： | AD9953YSVZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/32页 |
| 文件大小： | 0K |
| 描述： | IC DDS DAC 14BIT 400MSPS 48-TQFP |
| 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 |
| 分辨率（位）： | 14 b |
| 主 fclk： | 400MHz |
| 调节字宽（位）： | 32 b |
| 电源电压： | 1.71 V ~ 1.96 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-TQFP 裸露焊盘 |
| 供应商设备封装： | 48-TQFP 裸露焊盘（7x7） |
| 包装： | 托盘 |
| 产品目录页面： | 552 (CN2011-ZH PDF) |
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Control Register Bit Descriptions
Control Function Register. No. 1 (CFR1)
The CFR1 is used to control the various functions, features, and
modes of the AD9953. The functionality of each bit is below.
CFR1<31>: RAM Enable Bit
CFR1<31> = 0 (default). The RAM is powered down to
conserve power. Single-tone mode of operation is active.
CFR1<31> = 1. If CFR1<31> is active, the RAM is enabled for
operation. Access control for normal operation is controlled via
the mode control bits of the RSCW for the current profile.
CFR1<30>: RAM Destination Bit
CFR1<30> = 0 (default). If CFR1<31> is active, a Logic 0 on the
RAM destination bit (CFR1<30> = 0) configures the AD9953
such that the RAM output drives the phase accumulator (i.e.,
the frequency tuning word). If CFR1<31> is inactive,
CFR1<30> is a Don’t Care.
CFR1<30> = 1. If CFR1<31> is active, a Logic 1 on the RAM
destination bit (CFR1<30> = 1) configures the AD9953 such
that the RAM output drives the phase-offset adder (i.e., sets the
phase offset of the DDS core).
CFR1<29:27>: Not Used
CFR1<26>: Amplitude Ramp Rate Load Control Bit
CFR1<26> = 0 (default). The amplitude ramp rate timer is
loaded only upon timeout (timer == 1) and is not loaded due to
an I/O UPDATE input signal.
CFR1<26> = 1. The amplitude ramp rate timer is loaded upon
timeout (timer == 1) or at the time of an I/O UPDATE input signal.
CFR1<25>: Shaped On-Off Keying Enable Bit
CFR1<25> = 0 (default). Shaped on-off keying is bypassed.
CFR1<25> = 1. Shaped on-off keying is enabled. When enabled,
CFR1<24> controls the mode of operation for this function.
CFR1<24>: Auto Shaped On-Off Keying Enable Bit (Only Valid
when CFR1<25> Is Active High)
CFR1<24> = 0 (default). When CFR1<25> is active, a Logic 0
on CFR1<24> enables the manual shaped on-off keying
operation. Each amplitude sample sent to the DAC is multiplied
by the amplitude scale factor. See the Shaped On-Off Keying
section for details.
CFR1<24> = 1. When CFR1<25> is active, a Logic 1 on
CFR1<24> enables the auto shaped on-off keying operation.
Toggling the OSK pin high will cause the output scalar to ramp
up from zero scale to the amplitude scale factor at a rate deter-
mined by the amplitude ramp rate. Toggling the OSK pin low
will cause the output to ramp down from the amplitude scale
factor to zero scale at the amplitude ramp rate. See the Shaped
On-Off Keying section for details.
CFR1<23>: Automatic Synchronization Enable Bit
CFR1<23> = 0 (default). The automatic synchronization feature
of multiple AD9953s is inactive.
CFR1<23> = 1. The automatic synchronization feature of
multiple AD9953s is active. The device will synchronize its
internal synchronization clock (SYNC_CLK) to align to the
signal present on the SYNC_IN input. See the Synchronizing
Multiple AD9953s section for details.
CFR1<22>: Software Manual Synchronization of Multiple
AD9953s
CFR1<22> = 0 (default). The manual synchronization feature is
inactive.
CFR1<22> = 1. The software controlled manual synchroniza-
tion feature is executed. The SYNC_CLK rising edge is
advanced by one SYNC_CLK cycle and this bit is cleared. To
advance the rising edge multiple times, this bit needs to be set
for each advance. See the Synchronizing Multiple AD9953s
section for details.
CFR1<21:14>: Not Used
CFR1<13>: Auto-Clear Phase Accumulator Bit
CFR1<13> = 0 (default). The current state of the phase accumula-
tor remains unchanged when the frequency tuning word is applied.
CFR1<13> = 1. This bit automatically synchronously clears
(loads 0s into) the phase accumulator for one cycle upon
reception of an I/O UPDATE signal.
CFR1<12>: Sine/Cosine Select Bit
CFR1<12> = 0 (default). The angle-to-amplitude conversion
logic employs a COSINE function.
CFR1<12> = 1. The angle-to-amplitude conversion logic
employs a SINE function.
CFR1<11>: Not Used
CFR1<10>: Clear Phase Accumulator
CFR1<10> = 0 (default). The phase accumulator functions as
normal.
CFR1<10> = 1. The phase accumulator memory elements are
cleared and held clear until this bit is cleared.
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| AD9953YSVZ-REEL7 | 功能描述:IC DDS DAC 14BIT 1.8V 48TQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 直接数字合成 (DDS) 系列:- 产品变化通告:Product Discontinuance 27/Oct/2011 标准包装:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 调节字宽（位）:32 b 电源电压:2.97 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| AD9954 | 制造商:AD 制造商全称:Analog Devices 功能描述:400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer |
| AD9954/PCB | 制造商:Analog Devices 功能描述:AD9954 400 MSPS DDS W/ 14 BIT DAC EVALBD - Bulk 制造商:Analog Devices 功能描述:EVALUATION KIT ((NS)) |
| AD9954/PCBZ | 功能描述:BOARD EVAL FOR 9954 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 |
| AD9954/PCBZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:400 MSPS, 14-Bit, 1.8 V CMOS, Direct Digital Synthesizer |
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