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參數(shù)資料
| 型號(hào)： | AD7568BP |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 10/14頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 12BIT LC2MOS OCTAL 44PLCC |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 設(shè)置時(shí)間： | 500ns |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 8 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 17.5mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 44-LCC（J 形引線） |
| 供應(yīng)商設(shè)備封裝： | 44-PLCC（16.59x16.59） |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 16 電流，單極；16 電流，雙極 |
| 采樣率（每秒）： | 2M |
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AD7568
–5–
TERMINOLOGY
Relative Accuracy
Relative Accuracy or endpoint linearity is a measure of the
maximum deviation from a straight line passing through the
endpoints of the DAC transfer function. It is measured after
adjusting for zero error and full-scale error and is normally ex-
pressed in Least Significant Bits or as a percentage or full-scale
reading.
Differential Nonlinearity
Differential nonlinearity is the difference between the measured
change and the ideal 1 LSB change between any two adjacent
codes. A specified differential nonlinearity of 1 LSB maximum
ensures monotonicity.
Gain Error
Gain Error is a measure of the output error between an ideal
DAC and the actual device output. It is measured with all 1s in
the DAC after offset error has been adjusted out and is
expressed in Least Significant Bits. Gain error is adjustable to
zero with an external potentiometer.
Output Leakage Current
Output leakage current is current which flows in the DAC lad-
der switches when these are turned off. For the IOUT1 terminal,
it can be measured by loading all 0s to the DAC and measuring
the IOUT1 current. Minimum current will flow in the IOUT2 line
when the DAC is loaded with all 1s. This is a combination of
the switch leakage current and the ladder termination resistor
current. The IOUT2 leakage current is typically equal to that in
IOUT1.
Output Capacitance
This is the capacitance from the IOUT1 pin to AGND.
Output Voltage Settling Time
This is the amount of time it takes for the output to settle to a
specified level for a full-scale input change. For the AD7568, it
is specified with the AD843 as the output op amp.
Digital to Analog Glitch Impulse
This is the amount of charge injected into the analog output
when the inputs change state. It is normally specified as the area
of the glitch in either pA-secs or nV-secs, depending upon
whether the glitch is measured as a current or voltage signal. It
is measured with the reference input connected to AGND and
the digital inputs toggled between all 1s and all 0s.
AC Feedthrough Error
This is the error due to capacitive feedthrough from the DAC
reference input to the DAC IOUT terminal, when all 0s are
loaded in the DAC.
Channel-to-Channel Isolation
Channel-to-channel isolation refers to the proportion of input
signal from one DAC’s reference input which appears at the
output of any other DAC in the device and is expressed in dBs.
Digital Crosstalk
The glitch impulse transferred to the output of one converter
due to a change in digital input code to the other converter is
defined as the Digital Crosstalk and is specified in nV-secs.
Digital Feedthrough
When the device is not selected, high frequency logic activity on
the device digital inputs is capacitively coupled through the de-
vice to show up as noise on the IOUT pin and subsequently on
the op amp output. This noise is digital feedthrough.
Table I. AD7568 Loading Sequence
DB15
DB0
DB11 DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
A0
DS2
DS1
DS0
Table II. DAC Selection
DS2
DS1
DS0
Function
0
DAC A Selected
0
1
DAC B Selected
0
1
0
DAC C Selected
0
1
DAC D Selected
1
0
DAC E Sclected
1
0
1
DAC F Selected
1
0
DAC G Sclected
1
DAC H Selected
REV. C
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7568BP-REEL | 制造商:Analog Devices 功能描述:DAC 8CH R-2R 12-BIT 44PLCC - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:OCTAL 12-BIT DAC IC - Tape and Reel |
| AD7568BPZ | 功能描述:IC DAC 12BIT LC2MOS OCTAL 44PLCC 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(shí)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 |
| AD7568BPZ-REEL | 功能描述:IC DAC 12BIT LC2MOS OCTAL 44PLCC RoHS:是 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(shí)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 |
| AD7568BS | 制造商:Analog Devices 功能描述:DAC 8-CH R-2R 12-bit 44-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:OCTAL 12-BIT DAC IC - Bulk 制造商:Analog Devices 功能描述:Digital-Analog Converter IC Interface Ty |
| AD7568BS-REEL | 制造商:Analog Devices 功能描述:DAC 8-CH R-2R 12-bit 44-Pin MQFP T/R |
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