參數資料
| 型號： | AD7849AR |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 2/20頁 |
| 文件大小： | 0K |
| 描述： | IC DAC 16BIT SRL INP 20-SOIC |
| 產品培訓模塊： | Data Converter Fundamentals DAC Architectures |
| 標準包裝： | 37 |
| 設置時間： | 7µs |
| 位數： | 14 |
| 數據接口： | 串行 |
| 轉換器數目： | 1 |
| 電壓電源： | 模擬和數字，雙 ± |
| 功率耗散（最大）： | 100mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 20-SOIC W |
| 包裝： | 管件 |
| 輸出數目和類型： | 1 電壓，單極；1 電壓，雙極 |
| 采樣率（每秒）： | 143k |
AD7849
Rev. C | Page 10 of 20
TERMINOLOGY
Least Significant Bit
This is the analog weighting of 1 bit of the digital word in a
DAC. For the B version and the C versions, 1 LSB = (VREF+
VREF)/216. For the A version, 1 LSB = (VREF+ VREF)/214.
Relative Accuracy
Relative accuracy or endpoint nonlinearity 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 both endpoints (that is, offset and gain errors are
adjusted out) and is normally expressed in least significant bits
or as a percentage of full-scale range.
Differential Nonlinearity
Differential nonlinearity is the difference between the measured
change and the ideal change between any two adjacent codes. A
specified differential nonlinearity of less than ±1 LSB over the
operating temperature range ensures monotonicity.
Gain Error
Gain error is a measure of the output error between an ideal
DAC and the actual device output with all 1s loaded after offset
error has been adjusted out. Gain error is adjustable to zero
with an external potentiometer.
Offset Error
This is the error present at the device output with all 0s loaded
in the DAC. It is due to the op amp input offset voltage and bias
current and the DAC leakage current.
Bipolar Zero Error
When the AD7849 is connected for bipolar output and (100 …
000) is loaded to the DAC, the deviation of the analog output
from the ideal midscale of 0 V is called the bipolar zero error.
Digital-to-Analog Glitch Impulse
This is the amount of charge injected from the digital inputs to
the analog output when the inputs change state. Normally, this
is specified as the area of the glitch in nV-secs.
Multiplying Feedthrough Error
This is an ac error due to capacitive feedthrough from either of
the VREF terminals to VOUT when the DAC is loaded with all 0s.
Digital Feedthrough
When the DAC is not selected (SYNC is held high), high
frequency logic activity on the digital inputs is capacitively
coupled through the device to show up as noise on the VOUT pin.
This noise is digital feedthrough.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7849AR-REEL | 功能描述:IC DAC 16BIT SRL INP 20-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:- 標準包裝:2,400 系列:- 設置時間:- 位數:18 數據接口:串行 轉換器數目:3 電壓電源:模擬和數字 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 供應商設備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數目和類型:* 采樣率（每秒）:* |
| AD7849ARZ | 功能描述:IC DAC 14/16BIT SRL-IN 20-SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:- 標準包裝:1 系列:- 設置時間:4.5µs 位數:12 數據接口:串行，SPI? 轉換器數目: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） 供應商設備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數目和類型: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 |
| AD7849ARZ-REEL | 功能描述:IC DAC 14/16BIT SRL-IN 20-SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:- 標準包裝:47 系列:- 設置時間:2µs 位數:14 數據接口:并聯 轉換器數目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:管件 輸出數目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
| AD7849BN | 制造商:Analog Devices 功能描述:DAC 1-CH R-2R 16-bit 20-Pin PDIP N Tube 制造商:Rochester Electronics LLC 功能描述:SERIAL INPUT,16-BIT DAC I.C. - Bulk |
| AD7849BNZ | 功能描述:IC DAC 16BIT SERIAL INP 20DIP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:- 標準包裝:2,400 系列:- 設置時間:- 位數:18 數據接口:串行 轉換器數目:3 電壓電源:模擬和數字 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 供應商設備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數目和類型:* 采樣率（每秒）:* |
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