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參數資料
| 型號： | AD664KP |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | Monolithic 12-Bit Quad DAC |
| 中文描述： | QUAD, PARALLEL, WORD INPUT LOADING, 10 us SETTLING TIME, 12-BIT DAC, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數： | 19/20頁 |
| 文件大?。?/td> | 566K |
| 代理商： | AD664KP |
AD664
REV. C
–19–
Figure 29. AD664 in “Tester-per-Pin” Architecture
APPLICATIONS OF THE AD664
“Tester-Per-Pin” ATE Architecture
Figure 29 shows the AD664 used in a single channel of a digital
test system. In this scheme, the AD664 supplies four individual
output voltages. Two are provided to the V
HIGH
and V
LOW
in-
puts of the AD345 pin driver I.C. to set the digital output levels.
Two others are routed to the inputs of the AD96687 dual com-
parator to supply reference levels of the readback features. This
approach can be replicated to give as many channels of stimulus/
readback as the tester has pins. The AD664 is a particularly
appropriate choice for a large-scale system because the low
power requirements (under 500 mW) ease power supply and
cooling requirements. Analog ground currents of 600
μ
A or less
make the ground current management task simpler. All DACs
can be driven from the same system reference and will track
over time and temperature. Finally, the small board area
required by the AD664 (and AD345 and AD96687) allows a
high functional density.
X-Y Plotters
Figure 30 is a block diagram of the control section of a
microprocessor-controlled X-Y pen plotter. In this conceptual
exercise, two of the DACs are used for the X-channel drive and
two are used for the Y-channel drive. Each provides either the
coarse or fine movement control for its respective channel. This
approach offers increased resolution over some other approaches.
A designer can take advantage of the reset feature of the AD664
in the following manner. If the system is designed such that the
“HOME” position of the pen (or galvanometer, beam, head or
similar mechanism) results when the outputs of all of the DACs
are at zero, then no system software is required to home the
pen. A simple reset signal is sufficient.
Similarly, the transparent feature could be used to the same
end. One code can be sent to all DACs at the same time to send
the pen to the home position. Of course, this would require
some software where the previous example would require only a
single reset strobe signal!
Drawing scaling can be achieved by taking advantage of the
AD664’s software programmable gain settings. If, for example,
an “A” size drawing is created with gain settings of 1, then a
“C” size drawing can be created by simply resetting all DAC
gains to 2 and redrawing the object. Conversely, a “C” size
drawing created with gains of 2 can be reduced to “A” size sim-
ply by changing the gains to 1 and redrawing. The same princi-
pal applies for conversion from “B” size to “D” size or “D” size
to “B” size. The multiplying capability of the AD664 provides
another scaling option. Changing the reference voltage provides
a proportional change in drawing size. Inverting the reference
voltage would invert the drawing.
Swapping digital input data from the X channel to the Y chan-
nel would rotate the drawing 90 degrees.
Figure 30. X-Y Plotter Block Diagram
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| AD664AD-UNI | Monolithic 12-Bit Quad DAC |
| AD664KN-BIP | Monolithic 12-Bit Quad DAC |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD664KPZ | 功能描述:IC DAC 12BIT QUAD MONO 44-PLCC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 設置時間:1µs 位數:8 數據接口:串行 轉換器數目:8 電壓電源:雙 ± 功率耗散（最大）:941mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC W 包裝:帶卷 (TR) 輸出數目和類型:8 電壓，單極 采樣率（每秒）:* |
| AD664SD-BIP | 功能描述:數模轉換器- DAC IC QUAD 12-BIT DAC IC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| AD664SD-BIP/883B | 功能描述:數模轉換器- DAC IC MONO 12-BIT QUAD RoHS:否 制造商:Analog Devices 轉換器數量:4 DAC 輸出端數量:4 轉換速率: 分辨率:12 bit 接口類型:Serial (I2C) 穩(wěn)定時間: 最大工作溫度:+ 105 C 安裝風格: 封裝 / 箱體:TSSOP 封裝:Reel |
| AD664SD-UNI | 制造商:Analog Devices 功能描述:DAC 4-CH R-2R 12-BIT 28CDIP - Rail/Tube 制造商:Analog Devices 功能描述:IC DAC 12BIT QUAD UNIPOL 28-CDIP 制造商:Analog Devices 功能描述:CONVERTER - DAC |
| AD664SD-UNI/883B | 功能描述:數模轉換器- DAC IC QUAD 12-BIT DAC IC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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