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參數(shù)資料
| 型號： | AD5930YRUZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Programmable Frequency Sweep and Output Burst Waveform Generator |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| 封裝： | LEAD FREE, MO-153AC, TSSOP-20 |
| 文件頁數(shù)： | 16/28頁 |
| 文件大小： | 505K |
| 代理商： | AD5930YRUZ |
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AD5930
THEORY OF OPERATION
The AD5930 is a general-purpose synthesized waveform
generator capable of providing digitally programmable
waveform sequences in both the frequency and time domain.
The device contains embedded digital processing to provide a
repetitive sweep of a user programmable frequency profile
allowing enhanced frequency control. Because the device is pre-
programmable, it eliminates continuous write cycles from a
DSP/μcontroller in generating a particular waveform.
Rev. 0 | Page 16 of 28
THE FREQUENCY PROFILE
The frequency profile is defined by the start frequency (F
START
),
the frequency increment (Δf) and the number of increments
per sweep (N
INCR
). The increment interval between frequency
increments, t
INT
, is either user programmable with the interval
automatically determined by the device (auto-increment mode),
or externally controlled via a hardware pin (external increment
mode). For automatic update, the interval profile can either be
for a fixed number of clock periods or for a fixed number of
output waveform cycles.
In the auto-increment mode, a single pulse at the CTRL pin starts
and executes the frequency sweep. In the external increment
mode, the CTRL pin also starts the sweep, but the frequency
increment interval is determined by the time interval between
sequential 0/1 transitions on the CTRL pin. Furthermore, the
CTRL pin can be used to directly control the burst profile, where
during the input high time, the output waveform is present, and
during the input low time, the output is reset to midscale.
The frequency profile can be swept in two different modes: saw
sweep or triangular (up/down) sweep.
Saw-Sweep Mode
In the case of a saw sweep, the AD5930 repeatedly
sweeps between sweep start to sweep end, that is, from
F
START
incrementally to
F
START
+ N
INCR
× Δf
and then returns directly to F
START
to begin again (see Figure 31).
This gives a saw-sweep cycle time of
(N
INCR
+ 1) × t
INT
F
START
F
START
F
START
+
F
F
START
+ N
INCR
×
F
MIDSCALE
0
Figure 31. Saw-Sweep Profile
Triangular-Sweep Mode
In the case of a triangular sweep, the AD5930 repeatedly
sweeps between sweep start to sweep end, that is, from F
START
incrementally to
F
START
+ N
INCR
× Δf
and then returns to F
START
in a decremented manner (see Figure 32).
The triangular-sweep cycle time is given by
(1 + (2 × N
INCR
)) × t
INT
F
START
0
F
START
F
START
F
START
+
F
F
START
+
F
F
START
+ N
INCR
×
F
MIDSCALE
Figure 32. Triangular-Sweep Profile
OUTPUT MODES
The AD5930 offers two possible output modes: continuous
output mode and burst output mode. Both of these modes are
illustrated in Figure 33.
0
CONTINUOUS
MODE
BURST
MODE
1
2
NUMBER STEP CHANGES
t
INT
T
BURST
Figure 33. Continuous Mode and Burst Mode of the AD5930
Continuous Output Mode
In this mode, each frequency of the sweep is available for the
length of time programmed into the time interval (t
INT
) register.
This means the frequency swept output signal is continuously
available, and is therefore phase continuous at all frequency
increments.
To set up the AD5930 in continuous mode, the CW/BURST bit
(D7) in the control register must be set to 0. See the Activating
and Controlling the Sweep section for more details.
Burst Output Mode
In this mode, the AD5930 provides a programmable burst
of the waveform output for a fixed length of time (T
BURST
)
within the programmed increment interval (t
INT
). Then for
the remainder of the t
INT
interval, the output is reset to mid-
scale and remains there until the next frequency increment.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AD5930YRUZ-REEL7 | 功能描述:IC GEN PROG FREQ BURST 20TSSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD5932 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Programmable Frequency Scan Waveform Generator |
| AD5932YRUZ | 功能描述:IC PROG WAVEFORM GEN SNGL16TSSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD5932YRUZ-REEL7 | 功能描述:IC PROG WAVEFORM GENERAT 16TSSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD5933 | 制造商:AD 制造商全稱:Analog Devices 功能描述:1 MSPS 12-Bit Impedance Converter, Network Analyzer |
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