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参数资料
| 型号： | AD587JR |
| 厂商： | Analog Devices Inc |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 10V 8-SOIC |
| 产品变化通告： | Product Discontinuance 27/Oct/2011 |
| 标准包装： | 98 |
| 基准类型： | 串联，精度 |
| 输出电压： | 10V |
| 容差： | ±10mV |
| 温度系数： | 20ppm/°C |
| 输入电压： | 13.5 V ~ 36 V |
| 通道数： | 1 |
| 电流 - 静态： | 4mA |
| 电流 - 输出： | 10mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
AD587
THEORY OF OPERATION
The AD587 consists of a proprietary buried Zener diode
reference, an amplifier to buffer the output, and several high
stability thin-film resistors, as shown in Figure 3. This design
results in a high precision monolithic 10 V output reference
with initial offset of 5 mV or less. The temperature-compensa-
tion circuitry provides the device with a temperature coefficient
of less than 5 ppm/°C.
NOISE
+V IN REDUCTION
NOISE PERFORMANCE AND REDUCTION
Noise generated by the AD587 is typically less than 4 μV p-p
over the 0.1 Hz to 10 Hz band. Noise in a 1 MHz bandwidth is
approximately 200 μV p-p. The dominant source of this noise is
the buried Zener, contributing approximately 100 nV/√Hz. By
comparison, the contribution of the op amp is negligible.
The noise measurement is made with a band-pass filter made
2
R S
8
of a 1-pole high-pass filter with a corner frequency at 0.1 Hz
and a 2-pole low-pass filter with a corner frequency at 12.6 Hz
A1
6 V OUT
to create a filter with a 9.922 Hz bandwidth.
R F
1μV
5s
R I
R T
AD587
5 TRIM
100
90
4
GND
NOTE
PIN 1, PIN 3, AND PIN 7 ARE INTERNAL TEST
POINTS. NO CONNECTIONS TO THESE POINTS.
Figure 3. Functional Block Diagram
A capacitor can be added at the NOISE REDUCTION pin
(Pin 8) to form a low-pass filter with R S to reduce the noise
contribution of the Zener to the circuit.
APPLYING THE AD587
The AD587 is simple to use in virtually all precision reference
applications. When power is applied to Pin 2 and Pin 4 is
grounded, Pin 6 provides a 10 V output. No external compo-
nents are required; the degree of desired absolute accuracy is
achieved simply by selecting the required device grade. The
AD587 requires less than 4 mA quiescent current from an
operating supply of 15 V.
1μV
10
0%
Figure 5. 0.1 Hz to 10 Hz Noise
If further noise reduction is desired, an external capacitor can
be added between the NOISE REDUCTION pin and ground,
as shown in Figure 4. This capacitor, combined with the 4 kΩ R S
and the Zener resistances, forms a low-pass filter on the output
of the Zener cell. A 1 μF capacitor has a 3 dB point at 40 Hz
and reduces the high frequency (up to 1 MHz) noise to about
160 μV p-p. Figure 6 shows the 1 MHz noise of a typical AD587,
both with and without a 1 μF capacitor.
Fine trimming may be desired to set the output level to exactly
10.000 V (calibrated to a main system reference). System cali-
200μV
50μs
bration may also require a reference voltage that is slightly
different from 10.000 V, for example, 10.24 V for binary
applications. In either case, the optional fine-trimming circuit
shown in Figure 4 can offset the output by as much as 300 mV
with minimal effect on other device characteristics.
+V IN
C N – 1μF
NO C N
100
90
10
0%
OPTIONAL
NOISE-
REDUCTION
CAPACITOR
C N
1μF
2
V IN
NOISE V OUT 6
8 REDUCTION
AD587
TRIM 5
GND
OUTPUT
10k ?
Figure 6. Effect of 1 μF Noise-Reduction Capacitor on Broadband Noise
4
Figure 4. Optional Fine-Trimming Configuration
Rev. H | Page 6 of 12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD587JR-REEL | 功能描述:IC VREF SERIES PREC 10V 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:3,000 系列:- 基准类型:旁路，精度 输出电压:5V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:80µA 电流 - 静态:- 电流 - 输出:15mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:TO-236-3，SC-59，SOT-23-3 供应商设备封装:SOT-23-3 包装:带卷 (TR) 其它名称:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
| AD587JR-REEL7 | 功能描述:IC VREF SERIES PREC 10V 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:3,000 系列:- 基准类型:旁路，精度 输出电压:5V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:80µA 电流 - 静态:- 电流 - 输出:15mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:TO-236-3，SC-59，SOT-23-3 供应商设备封装:SOT-23-3 包装:带卷 (TR) 其它名称:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
| AD587JRZ | 功能描述:IC VREF SERIES PREC 10V 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:3,000 系列:- 基准类型:旁路，精度 输出电压:3V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:82µA 电流 - 静态:- 电流 - 输出:15mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-TSSOP（5 引线），SC-88A，SOT-353 供应商设备封装:SC-70-5 包装:带卷 (TR) 其它名称:296-20888-2 |
| AD587JRZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Precision 10 V Reference |
| AD587JRZ-REEL | 功能描述:IC VREF SERIES PREC 10V 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:2,000 系列:- 基准类型:旁路，可调节，精度 输出电压:1.24 V ~ 16 V 容差:±0.5% 温度系数:- 输入电压:1.24 V ~ 16 V 通道数:1 电流 - 阴极:100µA 电流 - 静态:- 电流 - 输出:20mA 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:TO-226-3、TO-92-3（TO-226AA）成形引线 供应商设备封装:TO-92-3 包装:带卷 (TR) |
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