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| 型号： | ADR421BRZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/24页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 2.5V 8-SOIC |
| 设计资源： | 40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5380 (CN0007) 40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5381 (CN0010) 32 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5382 (CN0011) 32 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5383 (CN0014) 8 to 16 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5390/1/2 (CN0029) High Precision Digital-to-Analog Conversion Using the 16-Bit AD5542/1, ADR421, and AD8628 (CN0079) 16 Channels of Programmable Output Span Using AD5360 (CN0131) Layout Considerations for an Expandable Multichannel Simultaneous Sampling Data Acquisition System Based on AD7606 (CN0148) 40 Channels of Programmable Output Span Using AD5371 (CN0149) Software Calibrated, 1 MHz to 8 GHz, 70 dB RF Power Measurement System Using AD8318 (CN0150) How to Achieve High Precision Voltage Level Setting Using AD5541A/42A (CN0169) |
| 标准包装： | 98 |
| 系列： | XFET® |
| 基准类型： | 串联，精度 |
| 输出电压： | 2.5V |
| 容差： | ±0.04% |
| 温度系数： | 3ppm/°C |
| 输入电压： | 4.5 V ~ 18 V |
| 通道数： | 1 |
| 电流 - 静态： | 500µA |
| 电流 - 输出： | 10mA |
| 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： | 管件 |
| 产品目录页面： | 796 (CN2011-ZH PDF) |
ADR420/ADR421/ADR423/ADR425
APPLICATIONS
Data Sheet
OUTPUT ADJUSTMENT
The ADR42x trim terminal can be used to adjust the output
voltage over a ±0.5% range. This feature allows the system
SOURCE FIBER
GIMBAL + SENSOR
LASER BEAM
DESTINATION
FIBER
designer to trim system errors out by setting the reference to
a voltage other than the nominal. This is also helpful if the
ACTIVATOR
LEFT
MEMS MIRROR
ACTIVATOR
RIGHT
part is used in a system at temperature to trim out any error.
Adjustment of the output has a negligible effect on the
temperature performance of the device. To avoid degrading
AMPL
PREAMP
AMPL
temperature coefficients, both the trimming potentiometer
and the two resistors need to be low temperature coefficient
types, preferably <100 ppm/°C.
CONTROL
ELECTRONICS
DAC
ADC
DAC
ADR421
ADR421
ADR421
INPUT
2
DSP
V IN
V OUT 6
ADR420/
ADR421/
ADR423/
ADR425
TRIM 5
GND
4
R1
470k ?
R2
OUTPUT
V OUT = ±0.5%
R P
10k ?
10k ? (ADR420)
15k ? (ADR421)
Figure 41. All Optical Router Network
HIGH VOLTAGE FLOATING CURRENT SOURCE
The circuit in Figure 42 can be used to generate a floating
current source with minimal self-heating. This particular
configuration can operate on high supply voltages determined
by the breakdown voltage of the N-channel JFET.
Figure 40. Output Trim Adjustment
+V S
REFERENCE FOR CONVERTERS IN OPTICAL
NETWORK CONTROL CIRCUITS
2
V IN
SST111
VISHAY
arrays of micromirrors direct and route optical signals from
fiber to fiber, without first converting them to electrical form,
which reduces the communication speed. The tiny micro-
mechanical mirrors are positioned so that each is illuminated
by a single wavelength that carries unique information and
can be passed to any desired input and output fiber. The mirrors
are tilted by the dual-axis actuators controlled by precision
analog-to-digital converters (ADCs) and digital-to-analog
ADR420/
ADR421/
ADR423/
ADR425
V OUT 6
GND
4
OP09
2N3904
R L
2.10k ?
converters (DACs) within the system. Due to the microscopic
movement of the mirrors, not only is the precision of the
converters important, but the noise associated with these
controlling converters is extremely critical, because total noise
within the system can be multiplied by the numbers of
converters used. Consequently, the exceptional low noise of the
ADR42x is necessary to maintain the stability of the control
loop for this application.
Rev. J | Page 18 of 24
–V S
Figure 42. High Voltage Floating Current Source
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADR421BRZ | 制造商:Analog Devices 功能描述:Voltage Reference IC |
| ADR421BRZ-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® 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 |
| ADR423 | 制造商:AD 制造商全称:Analog Devices 功能描述:Ultraprecision Low Noise, 2.048 V/2.500 V/ 3.00 V/5.00 V XFET Voltage References |
| ADR423AR | 制造商:Analog Devices 功能描述:V-Ref Precision 3V 10mA 8-Pin SOIC N Tube 制造商:Rochester Electronics LLC 功能描述:3.0 VOLTAGE REFERENCE - Bulk 制造商:Analog Devices 功能描述:IC VOLT REF |
| ADR423ARM | 制造商:Analog Devices 功能描述:V-Ref Precision 3V 10mA 8-Pin MSOP Tube 制造商:Rochester Electronics LLC 功能描述:3.0 VOLTAGE REFERENCE - Bulk |
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