參數(shù)資料
型號(hào)： AD9913BCPZ-REEL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 14/32頁(yè)
文件大小： 0K
描述： IC DDS 250MSPS 10BIT ADC 32LFCSP
產(chǎn)品培訓(xùn)模塊： 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
標(biāo)準(zhǔn)包裝： 1,500
分辨率（位）： 10 b
主 fclk： 250MHz
調(diào)節(jié)字寬（位）： 32 b
電源電壓： 1.8V
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 32-VFQFN 裸露焊盤(pán)，CSP
供應(yīng)商設(shè)備封裝： 32-LFCSP-VQ（5x5）
包裝： 帶卷 (TR)
AD9913
Rev. A | Page 21 of 32
POWER-DOWN FEATURES
The AD9913 supports an externally controlled power-down
feature as well as software programmable power-down bits
consistent with other Analog Devices, Inc. DDS products.
The external PWR_DWN_CTL pin determines the power-
down scheme. A low on this pin allows the user to power down
DAC, PLL, input clock circuitry, and the digital section of the
chip individually via the unique control bits, CFR1 [6:4]. In this
mode, CFR1 [7] is inactive.
When the PWR_DWN_CTL is set, CFR1 [6:4] lose their
meaning. At the same time, the AD9913 provides two different
power-down modes based on the value of CFR1 [7]: a fast
recovery power-down mode in which only the digital logic and
the DAC digital logic are powered down, and a full power-down
mode in which all functions are powered down. A significant
amount of time is required to recover from power-down mode.
Table 11 indicates the logic level for each power-down bit that
drives out of the AD9913 core logic to the analog section and
the digital clock generation section of the chip for the external
power-down operation.
Table 8. Power-Down Controls
Control
Mode Active
Description
PWR_DWN_CTL = 0
CFR1 [7] = don’t
care
Software
Control
Digital power-down = CFR1 [6]
DAC power-down = CFR1 [5]
Input clock power-down =
CFR1 [4]
PWRDWNCTL = 1
CFR1 [7] = 0
External
Control,
Fast recovery
power-down
mode
N/A
PWRDWNCTL = 1
CFR1 [7] = 1
External
Control,
Full power-
down mode
N/A
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