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| 型号： | ADR291FRZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 2.5V 8-SOIC |
| 标准包装： | 2,500 |
| 系列： | XFET® |
| 基准类型： | 串联，精度 |
| 输出电压： | 2.5V |
| 容差： | ±0.12% |
| 温度系数： | 20ppm/°C |
| 输入电压： | 2.8 V ~ 15 V |
| 通道数： | 1 |
| 电流 - 静态： | 15µA |
| 电流 - 输出： | 5mA |
| 工作温度： | -40°C ~ 125°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： | 带卷 (TR) |
Low Noise Micropower 2.5 V and
4.096 V Precision Voltage References
FEATURES
Supply range
2.8 V to 15 V, ADR291
4.4 V to 15 V, ADR292
Supply current: 15 μA maximum
Low noise: 8 μV and 12 μV p-p (0.1 Hz to 10 Hz)
High output current: 5 mA
Temperature range: ?40°C to +125°C
CONNECTION DIAGRAMS
NC 1 8 NC
V IN 2 7 NC
NC 3 TOP VIEW 6 V OUT
GND 4 (Not to Scale) 5 NC
NC = NO CONNECT
Figure 1. 8-Lead SOIC (R-8)
APPLICATIONS
Portable instrumentation
NC
V IN
NC
GND
1
2
3
4
TOP VIEW
(Not to Scale)
8
7
6
5
NC
NC
V OUT
NC
Precision reference for 3 V and 5 V systems
Analog-to-digital and digital-to-analog converter reference
Solar-powered applications
NC = NO CONNECT
Figure 2. 8-Lead TSSOP (RU-8)
GND
Loop-current-powered instruments
V OUT
3
2
1
V IN
TOP VIEW
(Not to Scale)
Figure 3. 3-Lead TO-92 (T-3)
GENERAL DESCRIPTION
The ADR291 and ADR292 are low noise, micropower precision
voltage references that use an XFET? reference circuit. The new
XFET architecture offers significant performance improvements
over traditional band gap and buried Zener-based references.
Improvements include one quarter the voltage noise output of
band gap references operating at the same current, very low and
ultralinear temperature drift, low thermal hysteresis, and
excellent long-term stability.
The ADR291/ADR292 family is a series of voltage references
coefficients for the three grades are 8 ppm/°C, 15 ppm/°C, and
25 ppm/°C maximum, respectively. Line regulation and load
regulation are typically 30 ppm/V and 30 ppm/mA, maintaining
the reference’s overall high performance. For a device with 5.0 V
output, refer to the ADR293 data sheet.
The ADR291 and ADR292 references are specified over the
extended industrial temperature range of ?40°C to +125°C.
Devices are available in the 8-lead SOIC, 8-lead TSSOP, and
3-lead TO-92 packages.
providing stable and accurate output voltages from supplies as
low as 2.8 V for the ADR291. Output voltage options are 2.5 V
and 4.096 V for the ADR291 and ADR292, respectively.
Table 1. ADR291/ADR292 Product
Output Initial
Temperature
Coefficient
Quiescent current is only 12 μA, making these devices ideal for
battery-powered instrumentation. Three electrical grades are
available offering initial output accuracies of ±2 mV, ±3 mV,
Part No.
Voltage (V)
2.500
4.096
Accuracy (±%)
0.08, 0.12, 0.24
0.07, 0.10, 0.15
(ppm/°C) Max
8, 15, 25
8, 15, 25
and ±6 mV maximum for the ADR291, and ±3 mV, ±4 mV,
and ±6 mV maximum for the ADR292. Temperature
Rev. F
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ?2007–2011 Analog Devices, Inc. All rights reserved.
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| ADR291FRZ-REEL7 | 功能描述:IC VREF SERIES PREC 2.5V 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:XFET® 产品培训模块:Voltage Reference Basics 标准包装:100 系列:- 基准类型:旁路，精度 输出电压:4.096V 容差:±0.075% 温度系数:50ppm/°C 输入电压:- 通道数:1 电流 - 阴极:1µA 电流 - 静态:- 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-SOIC 包装:管件 |
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| ADR291GR | 制造商:Analog Devices 功能描述:V-Ref Precision 2.5V 5mA 8-Pin SOIC N Tube 制造商:Rochester Electronics LLC 功能描述:LOW NOISE MICROPWR PRECISION VOLT. REF. - Bulk 制造商:Analog Devices 功能描述:IC VOLT REF |
| ADR291GR-REEL | 制造商:Analog Devices 功能描述:V-Ref Precision 2.5V 5mA 8-Pin SOIC N T/R |
| ADR291GR-REEL7 | 制造商:Analog Devices 功能描述:V-Ref Precision 2.5V 5mA 8-Pin SOIC N T/R 制造商:Rochester Electronics LLC 功能描述:LOW NOISE MICROPWR PRECISION VOLT. REF. - Tape and Reel |
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