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參數(shù)資料
| 型號： | DAC8043AFSZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 8/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 12BIT MULT SRL INP 8SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 設(shè)置時間： | 250ns |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 500µW |
| 工作溫度： | -40°C ~ 85°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-SO |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 1 電流，單極；1 電流，雙極 |
| 采樣率（每秒）： | 4M |
REV. B
DAC8043A
–8–
C00272–0–4/06
(B)
reference, the DAC output will provide a proportional dc voltage
output according to the transfer equation:
VOUT = –D/4096
× VREF
where D is the decimal data loaded into the DAC register and
VREF is the externally applied reference voltage source.
VREF
IOUT
GND
OP77
2R
R
RFB
VAC
VDD
RFB
10VP
VOUT
2R
DIGITAL INPUTS OMITTED FOR CLARITY
10pF
Figure 19. Unipolar (2-Quadrant) Operation
BIPOLAR 4-QUADRANT MULTIPLYING
Figure 20 shows a suggested circuit to achieve 4-quadrant mul-
tiplying operation. The summing amplifier multiplies VOUT1 by
2, and offsets the output with the reference voltage so that a
midscale digital input code of 2048 places VOUT2 at zero volts.
The negative full-scale voltage will be VREF when the DAC is
loaded with all zeros. The positive full-scale output will be
–(VREF – 1 LSB) when the DAC is loaded with all ones. Thus
the digital coding is offset binary. The voltage output transfer
equation for various input data and reference (or signal) values
follows:
VOUT2 = (D/2048 – 1)
× –V
REF
where D is the decimal data loaded into the DAC register and
VREF is the externally applied reference voltage source.
Precision resistors will be necessary to avoid ratio errors. Other-
wise trimming will be required to achieve full accuracy specifica-
tions available from the DAC8043A device. See the various
Analog Devices Digital Potentiometer products for automated
trimming solutions (e.g., the AD5204 for low voltage applica-
tions or the AD7376 for high voltage applications).
(0V TO –VREF)
VREF
IOUT
GND
2R
R
RFB
VAC
VDD
RFB
10VP
VOUT1
2R
DIGITAL INPUTS OMITTED FOR CLARITY
OP213
10k
OP213
VOUT2
20k
10pF
Figure 20. Bipolar (4-Quadrant) Operation
8-Lead Standard Small Outline Package [SOIC_N]
(R-8)
S-Suffix
Dimensions shown in millimeters and (inches).
8-Lead Plastic Dual In-Line Package [PDIP]
(N-8)
Dimensions shown in inches and (millimeters).
8-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-8)
Dimensions shown in millimeters.
OUTLINE DIMENSIONS
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| DAC8043FP | 功能描述:IC DAC 12BIT MULTIPLY CMOS 8-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:- 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
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