ADR291GRZ-REEL:  Low Noise Micropower Precision Voltage Reference (2.5 V)

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 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.

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, and ±6 mV maximum for the ADR291, and ±3 mV, ±4 mV, and ±6 mV maximum for the ADR292. Temperature 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.

产品应用领域 Applications
ADR291GRZ-REEL 特点
ADR291GRZ-REEL 功能框图

ADR291 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
ADR291ER 量产 8 ld SOIC 8 工业
ADR291ER-REEL7 量产 8 ld SOIC 8 工业
ADR291ERZ 量产 8 ld SOIC 8 工业
ADR291ERZ-REEL7 量产 8 ld SOIC 8 工业
ADR291FR 量产 8 ld SOIC 8 工业
ADR291FR-REEL 量产 8 ld SOIC 8 工业
ADR291FR-REEL7 量产 8 ld SOIC 8 工业
ADR291FRZ 量产 8 ld SOIC 8 工业
ADR291FRZ-REEL 量产 8 ld SOIC 8 工业
ADR291FRZ-REEL7 量产 8 ld SOIC 8 工业
ADR291GR 量产 8 ld SOIC 8 工业
ADR291GR-REEL 量产 8 ld SOIC 8 工业
ADR291GR-REEL7 量产 8 ld SOIC 8 工业
ADR291GRU 量产 8 ld TSSOP 8 工业
ADR291GRU-REEL7 量产 8 ld TSSOP 8 工业
ADR291GRUZ 量产 8 ld TSSOP 8 工业
ADR291GRUZ-REEL 量产 8 ld TSSOP 8 工业
ADR291GRUZ-REEL7 量产 8 ld TSSOP 8 工业
ADR291GRZ 量产 8 ld SOIC 8 工业
ADR291GRZ-REEL 量产 8 ld SOIC 8 工业
ADR291GRZ-REEL7 量产 8 ld SOIC 8 工业
ADR291GT9 量产 3 ld TO-92 3 工业
ADR291GT9Z 量产 3 ld TO-92 3 工业
ADR291FRZ-R7 量产   8 工业
ADR291FRZ-RL 量产   8 工业
ADR291GRZ-REEL 应用技术支持与电子电路设计开发资源下载
  1. ADR291 数据手册DataSheet 下载 . pdf
  2. ADI 模拟器件公司比较器产品选型指南 . pdf
  3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .pdf