参数资料
| 型号： | AD5764CSUZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/28页 |
| 文件大小： | 0K |
| 描述： | IC DAC 16BIT QUAD VOUT 32TQFP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 产品变化通告： | AD5764(R), AD5744R Product Change 04/Sept/2009 |
| 设计资源： | High Accuracy, Bipolar Voltage Output Digital-to-Analog Conversion Using AD5764 (CN0006) |
| 标准包装： | 1 |
| 设置时间： | 8µs |
| 位数： | 16 |
| 数据接口： | 串行 |
| 转换器数目： | 4 |
| 电压电源： | 双 ± |
| 功率耗散（最大）： | 275 mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-TQFP |
| 供应商设备封装： | 32-TQFP（7x7） |
| 包装： | 托盘 |
| 输出数目和类型： | 4 电压，双极 |
| 采样率（每秒）： | 1.26M |
| 产品目录页面： | 784 (CN2011-ZH PDF) |
| 配用： | EVAL-AD5764EBZ-ND - BOARD EVAL FOR AD5764 |
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AD5764
Data Sheet
Rev. F | Page 26 of 28
Precision Voltage Reference Selection
To achieve the optimum performance from the AD5764 over its
full operating temperature range, a precision voltage reference
must be used. Consideration should be given to the selection of
a precision voltage reference. The AD5764 has two reference
inputs, REFAB and REFCD. The voltages applied to the refer-
ence inputs are used to provide a buffered positive and negative
reference for the DAC cores. Therefore, any error in the voltage
reference is reflected in the outputs of the device.
There are four possible sources of error to consider when
choosing a voltage reference for high accuracy applications:
initial accuracy, temperature coefficient of the output voltage,
long-term drift, and output voltage noise.
Initial accuracy error on the output voltage of an external refer-
ence can lead to a full-scale error in the DAC. Therefore, to
minimize these errors, a reference with low initial accuracy
error specification is preferred. Choosing a reference with an
output trim adjustment, such as the ADR425, allows a system
designer to trim system errors out by setting the reference
voltage to a voltage other than the nominal. The trim adjust-
ment can also be used at temperature to trim out any error.
Long-term drift is a measure of how much the reference output
voltage drifts over time. A reference with a tight long-term drift
specification ensures that the overall solution remains relatively
stable over its entire lifetime.
The temperature coefficient of a reference output voltage affects
INL, DNL, and TUE. Choose a reference with a tight temperature
coefficient specification to reduce the dependence of the DAC
output voltage on ambient conditions.
In high accuracy applications, which have a relatively low noise
budget, reference output voltage noise needs to be considered.
Choosing a reference with as low an output noise voltage as
practical for the system resolution required is important. Precision
voltage references such as the ADR435 (XFET design) produce
low output noise in the 0.1 Hz to 10 Hz region. However, as the
circuit bandwidth increases, filtering the output of the reference
may be required to minimize the output noise.
Table 20. Some Precision References Recommended for Use with the AD5764
Part No.
Initial Accuracy (mV Max)
Long-Term Drift (ppm Typ)
Temp Drift (ppm/°C Max)
0.1 Hz to 10 Hz Noise (μV p-p Typ)
40
3
8
±2
50
3
3.4
±5
50
3
10
±5
50
9
8
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相关代理商/技术参数 |
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| AD5764CSUZ-REEL7 | 功能描述:IC DAC 16BIT QUAD BIPO 32-TQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 设置时间:1µs 位数:8 数据接口:串行 转换器数目:8 电压电源:双 ± 功率耗散（最大）:941mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC W 包装:带卷 (TR) 输出数目和类型:8 电压，单极 采样率（每秒）:* |
| AD5764R | 制造商:AD 制造商全称:Analog Devices 功能描述:Complete Quad, 16-Bit, High Accuracy, Serial Input, Bipolar Voltage Output DAC |
| AD5764R_08 | 制造商:AD 制造商全称:Analog Devices 功能描述:Complete Quad, 16-Bit, High Accuracy, Serial Input, Bipolar Voltage Output DAC |
| AD5764RASUZ | 制造商:AD 制造商全称:Analog Devices 功能描述:Complete Quad, 16-Bit, High Accuracy, Serial Input, Bipolar Voltage Output DAC |
| AD5764RASUZ-REEL7 | 制造商:AD 制造商全称:Analog Devices 功能描述:Complete Quad, 16-Bit, High Accuracy, Serial Input, Bipolar Voltage Output DAC |
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