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參數(shù)資料
| 型號： | AD7225CRSZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 8BIT LC2MOS QUAD 24SSOP |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 設(shè)置時間： | 4µs |
| 位數(shù)： | 8 |
| 轉(zhuǎn)換器數(shù)目： | 4 |
| 電壓電源： | 雙 ± |
| 功率耗散（最大）： | 500mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 4 電壓，單極；4 電壓，雙極 |
| 采樣率（每秒）： | * |
AD7225
Rev. C | Page 18 of 24
less, there exists a good correlation with the actual performance
of the transversal filter (see Figure 23).
DIGITAL WORD MULTIPLICATION
Because each DAC of the AD7225 has a separate reference input,
the output of one DAC can be used as the reference input for
another. This means that multiplication of digital words can be
performed (with the result given in analog form). For example,
if the output from DAC A is applied to VREFB, then the output
from DAC B, VOUTB, can be expressed as:
VOUTB = DA × DB × VREFA
where DA and DB are the fractional representations of the digital
words in DAC Latch A and DAC Latch B, respectively.
If DA = DB = D, the result is D2 × VREFA.
In this manner, the four DACs can be used on their own or in
conjunction with an external summing amplifier to generate
complex waveforms. Figure 24 shows one such application.
In this case, the output waveform, Y, is represented by
Y = (x4 + 2x3 + 3x2 + 2x + 4) × VIN
where x is the digital code that is applied to all four DAC
latches.
*DIGITAL INPUTS OMITTED FOR CLARITY.
100k
Y
VOUTA
VREFA
VOUTB
VREFB
VOUTC
VREFC
VOUTD
VREFD
VSS
AGND DGND
15V
VDD
AD7225*
VIN
100k
50k
33k
50k
25k
00986-
024
Figure 24. Complex Waveform Generation
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| AD7225KN | 功能描述:IC DAC 8BIT QUAD W/AMP 24-DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,400 系列:- 設(shè)置時間:- 位數(shù):18 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:3 電壓電源:模擬和數(shù)字 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:36-TFBGA 供應(yīng)商設(shè)備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數(shù)目和類型:* 采樣率（每秒）:* |
| AD7225KN/+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7225KNZ | 功能描述:IC DAC 8BIT QUAD W/AMP 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| AD7225KNZ | 制造商:Analog Devices 功能描述:D/A Converter (D-A) IC |
| AD7225KP | 制造商:Analog Devices 功能描述:DAC 4-CH R-2R 8-bit 28-Pin PLCC 制造商:Rochester Electronics LLC 功能描述:CMOS DAC IC - Bulk |
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