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參數(shù)資料
| 型號(hào)： | AD5781BRUZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 14/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 18BIT SRL 20TSSOP |
| 產(chǎn)品變化通告： | AD57x1 Feature Change 27/Jul/2011 |
| 設(shè)計(jì)資源： | 18-Bit Accurate, low noise, precision bipolar DC voltage source (CN0177) |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 設(shè)置時(shí)間： | 1µs |
| 位數(shù)： | 18 |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | * |
| 采樣率（每秒）： | 1M |
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Data Sheet
AD5781
Rev. D | Page 21 of 28
Table 9. Hardware Control Pins Truth Table
LDAC
CLR
RESET
Function
0
The AD5781 is in reset mode. The device cannot be programmed.
The AD5781 is returned to its power-on state. All registers are set to their default values.
0
1
The DAC register is loaded with the clearcode register value, and the output is set accordingly.
0
1
The output is set according to the DAC register value.
1
0
1
The DAC register is loaded with the clearcode register value, and the output is set accordingly.
1
The output is set according to the DAC register value.
0
1
The output remains at the clear code value.
1
The output remains set according to the DAC register value.
0
1
The output remains at the clear code value.
1
The DAC register is loaded with the clearcode register value and the output is set accordingly.
0
1
The DAC register is loaded with the clearcode register value and the output is set accordingly.
1
The output remains at the clear code value.
0
1
The output is set according to the DAC register value.
1
X is don’t care.
ON-CHIP REGISTERS
DAC Register
Table 10 outlines how data is written to and read from the DAC register.
Table 10. DAC Register
MSB
LSB
DB23
DB22
DB21
DB20
DB19
DB2
DB1
DB0
R/W
Register address
DAC register data
R/W
0
1
18-bits of data
1
X is don’t care.
The following equation describes the ideal transfer function of the DAC:
(
)
REFN
REFP
OUT
V
D
V
+
×
=
1
218
where:
VREFN is the negative voltage applied at the VREFNS input pin.
VREFP is the positive voltage applied at the VREFPS input pin.
D is the 18-bit code programmed to the DAC.
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| AD5781SRU-EP | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 18-Bit VOut +/-0.5 LSB INL RoHS:否 制造商:Analog Devices 轉(zhuǎn)換器數(shù)量:4 DAC 輸出端數(shù)量:4 轉(zhuǎn)換速率: 分辨率:12 bit 接口類型:Serial (I2C) 穩(wěn)定時(shí)間: 最大工作溫度:+ 105 C 安裝風(fēng)格: 封裝 / 箱體:TSSOP 封裝:Reel |
| AD578221 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| AD578JD | 制造商:AD 制造商全稱:Analog Devices 功能描述:VERY FAST, COMPLETE 10- OR 12-BIT A/D CONVERTERS |
| AD578JN | 制造商:AD 制造商全稱:Analog Devices 功能描述:VERY FAST, COMPLETE 10- OR 12-BIT A/D CONVERTERS |
| AD578K | 制造商:AD 制造商全稱:Analog Devices 功能描述:VERY FAST, COMPLETE 10- OR 12-BIT A/D CONVERTERS |
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