- 您現(xiàn)在的位置：買賣IC網 > PDF目錄8580 > AD5765CSUZ-REEL7 (Analog Devices Inc)IC DAC 16BIT 5V QUAD 32-TQFP PDF資料下載
參數資料
| 型號： | AD5765CSUZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 15/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 16BIT 5V QUAD 32-TQFP |
| 產品培訓模塊： | Data Converter Fundamentals DAC Architectures |
| 產品變化通告： | AD5763/65 Metal Layer Edit Change 08/Sept/2009 |
| 設計資源： | High Accuracy, Bipolar Voltage Output Digital-to-Analog Conversion Using AD5765 (CN0073) |
| 標準包裝： | 500 |
| 設置時間： | 8µs |
| 位數： | 16 |
| 數據接口： | 串行 |
| 轉換器數目： | 4 |
| 電壓電源： | 雙 ± |
| 功率耗散（最大）： | 76mW |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-TQFP |
| 供應商設備封裝： | 32-TQFP（7x7） |
| 包裝： | 帶卷 (TR) |
| 輸出數目和類型： | 4 電壓，雙極 |
| 采樣率（每秒）： | * |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
AD5765
Data Sheet
Rev. C | Page 22 of 28
OFFSET AND GAIN ADJUSTMENT WORKED
EXAMPLE
Using the information provided in the Theory of Operation
section, the following worked example demonstrates how the
AD5765 functions can be used to eliminate both offset and gain
errors. Because the AD5765 is factory calibrated, offset and gain
errors should be negligible. However, errors can be introduced
by the system that the AD5765 is operating within; for example,
a voltage reference value that is not equal to 2.048 V introduces
a gain error. An output range of ±4.096 V and twos complement
data coding are assumed.
Removing Offset Error
The AD5765 can eliminate an offset error in the range of 2 mV to
+1.98 mV with a step size of of a 16-bit LSB.
1. Calculate the step size of the offset adjustment.
μV
625
.
15
8
2
192
.
8
16
=
×
=
Size
Step
Adjust
Offset
2. Measure the offset error by programming 0x0000 to the
data register and measuring the resulting output voltage;
for this example, the measured value is 614 V.
3. Calculate the number of offset adjustment steps that this
value represents.
Steps
13
μV
625
.
15
μV
614
=
Size
Step
Offset
Value
Offset
Measured
Steps
of
Number
The offset error measured is positive; therefore, a negative
adjustment of 40 steps is required. The offset register is 8-bits
wide and the coding is twos complement.
The required offset register value can be calculated as follows:
1. Convert the adjustment value to binary: 00101000.
2. Convert the binary number to a negative twos complement
number by inverting all bits and adding 1: 11011000.
11011000 is the value that should be programmed to the
offset register.
Note that this twos complement conversion is not
necessary in the case of a positive offset adjustment. The
value to be programmed to the offset register is simply the
binary representation of the adjustment value.
Removing Gain Error
The AD5765 can eliminate a gain error at negative full-scale
output in the range of 2 mV to +1.94 mV with a step size of
of a 16-bit LSB.
1. Calculate the step size of the gain adjustment.
μV
5
.
62
2
192
.
8
16
=
×
=
Size
Step
Adjust
Gain
2. Measure the gain error by programming 0x8000 to the data
register and measuring the resulting output voltage. The
gain error is the difference between this value and 4.096 V;
for this example, the gain error is 0.8 mV.
3. Calculate how many gain adjustment steps this value
represents.
Steps
13
μV
5
.
62
mV
8
.
0
=
Size
Step
Gain
Value
Gain
Measured
Steps
of
Number
The gain error measured is negative (in terms of magnitude);
therefore, a positive adjustment of 13 steps is required. The gain
register is six bits wide and the coding is twos complement.
The required gain register value can be determined as follows:
1. Convert the adjustment value to binary: 001101.
The value to be programmed to the gain register is simply
this binary number.
相關PDF資料 |
PDF描述 |
|---|---|
| VI-B4Y-MX-B1 | CONVERTER MOD DC/DC 3.3V 49.5W |
| LTC2704CGW-12#TRPBF | IC DAC 12BIT QUAD VOUT 44-SSOP |
| AD7537KNZ | IC DAC 12BIT DUAL MULT 24DIP |
| VE-260-IV-F4 | CONVERTER MOD DC/DC 5V 150W |
| VI-B4Y-MW-B1 | CONVERTER MOD DC/DC 3.3V 66W |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD5766BCBZ-RL7 | 功能描述:16 CHANNEL 16 BIT BIPOLAR DAC 制造商:analog devices inc. 系列:- 零件狀態(tài):在售 位數:16 數模轉換器數:16 建立時間:12μs 輸出類型:Voltage - Unbuffered 差分輸出:無 數據接口:SPI，DSP 參考類型:外部 電壓 - 電源，模擬:2.97 V ~ 16 V 電壓 - 電源，數字:- INL/DNL（LSB）:±16，±1 架構:電阻串 DAC 工作溫度:-40°C ~ 105°C 封裝/外殼:49-UFBGA，WLCSP 供應商器件封裝:49-WLCSP 標準包裝:1 |
| AD5767BCBZ-RL7 | 功能描述:16 CHANNEL 12 BIT BIPOLAR DAC 制造商:analog devices inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 位數:12 數模轉換器數:16 建立時間:12μs 輸出類型:Voltage - Unbuffered 差分輸出:無 數據接口:SPI，DSP 參考類型:外部 電壓 - 電源，模擬:2.97 V ~ 16 V 電壓 - 電源，數字:- INL/DNL（LSB）:±1，±1 架構:電阻串 DAC 工作溫度:-40°C ~ 105°C 封裝/外殼:49-UFBGA，WLCSP 供應商器件封裝:49-WLCSP 標準包裝:1 |
| AD5767BCPZ-RL7 | 功能描述:16 CHANNEL 12 BIT BIPOLAR DAC 制造商:analog devices inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 位數:12 數模轉換器數:16 建立時間:12μs 輸出類型:Voltage - Unbuffered 差分輸出:無 數據接口:SPI，DSP 參考類型:外部 電壓 - 電源，模擬:2.97 V ~ 16 V 電壓 - 電源，數字:- INL/DNL（LSB）:±1，±1 架構:電阻串 DAC 工作溫度:-40°C ~ 105°C 封裝/外殼:40-WFQFN 裸露焊盤，CSP 供應商器件封裝:40-LFCSP（6x6） 標準包裝:1 |
| AD578 | 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 |
| AD5780 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultra Stable, 16-Bit ±0.5 LSB INL |
發(fā)布緊急采購，3分鐘左右您將得到回復。