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参数资料
| 型号： | ADR435BRMZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/24页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 5V 8-MSOP |
| 标准包装： | 1,000 |
| 系列： | XFET® |
| 基准类型： | 串联，精度 |
| 输出电压： | 5V |
| 容差： | ±0.04% |
| 温度系数： | 3ppm/°C |
| 输入电压： | 7 V ~ 18 V |
| 通道数： | 1 |
| 电流 - 静态： | 800µA |
| 电流 - 输出： | 30mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 带卷 (TR) |
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
APPLICATIONS INFORMATION
OUTPUT ADJUSTMENT
The ADR43x trim terminal can be used to adjust the output
voltage over a ±0.5% range. This feature allows the system designer
SOURCE FIBER
GIMBAL + SENSOR
LASER BEAM
DESTINATION
FIBER
to trim system errors out by setting the reference to a voltage
other than the nominal. This is also helpful if the part is used in
ACTIVATOR
LEFT
MEMS MIRROR
ACTIVATOR
RIGHT
a system at temperature to trim out any error. Adjustment of the
output has negligible effect on the temperature performance of the
AMPL
PREAMP
AMPL
device. To avoid degrading temperature coefficients, both the
trimming potentiometer and the two resistors need to be low
ADR431
temperature coefficient types, preferably <100 ppm/°C.
CONTROL
ELECTRONICS
ADR431
INPUT
V IN
V OUT
OUTPUT
V O = ±0.5%
DAC
ADC
DSP
GND
DAC
ADR431
ADR43x
TRIM
GND
R1
470k ?
R2
R P
10k ?
10k ? (ADR430)
15k ? (ADR431)
Figure 35. All Optical Router Network
HIGH VOLTAGE FLOATING CURRENT SOURCE
The circuit in Figure 36 can be used to generate a floating
current source with minimal self heating. This particular
configuration can operate on high supply voltages determined
Figure 34. Output Trim Adjustment
by the breakdown voltage of the N-channel JFET.
REFERENCE FOR CONVERTERS IN OPTICAL
NETWORK CONTROL CIRCUITS
In Figure 35, the high capacity, all optical router network
employs arrays of micromirrors to direct and route optical
signals from fiber to fiber without first converting them to
2
V IN
V OUT 6
+V S
SST111
VISHAY
electrical form, which reduces the communication speed. The
tiny micromechanical 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
ADR43x
GND
4
OP90
2N3904
R L
2.1k ?
mirrors are tilted by the dual-axis actuators, which are controlled
by precision ADCs and 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 also extremely critical. Total noise
within the system can be multiplied by the number of converters
employed. Therefore, to maintain the stability of the control
loop for this application, the ADR43x, with its exceptionally low
noise, is necessary.
–V S
Figure 36. High Voltage Floating Current Source
KELVIN CONNECTION
In many portable instrumentation applications, where printed
circuit board (PCB) cost and area go hand in hand, circuit
interconnects are very often of dimensionally minimum width.
These narrow lines can cause large voltage drops if the voltage
reference is required to provide load currents to various functions.
In fact, circuit interconnects can exhibit a typical line resistance
of 0.45 mΩ/square (for example, 1 oz. Cu). Force and sense
connections, also referred to as Kelvin connections, offer a
convenient method of eliminating the effects of voltage drops
in circuit wires. Load currents flowing through wiring resistance
produce an error (V ERROR = R × I L ) at the load. However, the
Kelvin connection of Figure 37 overcomes the problem by
including the wiring resistance within the forcing loop of the
operational amplifier.
Because the amplifier senses the load voltage, the operational
amplifier loop control forces the output to compensate for the
wiring error and to produce the correct voltage at the load.
Rev. J | Page 18 of 24
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADR435BR-REEL7 | 制造商:Analog Devices 功能描述:V-Ref Precision 5V 30mA 8-Pin SOIC N T/R 制造商:Rochester Electronics LLC 功能描述:5.0 V REFERENCE - Tape and Reel |
| ADR435BRZ | 功能描述:IC VREF SERIES PREC 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 |
| ADR435BRZ | 制造商:Analog Devices 功能描述:IC, SERIES V-REF, 5V, 2mV, 8-SOIC |
| ADR435BRZ-REEL7 | 功能描述:IC VREF SERIES PREC 5V 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:XFET® 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) |
| ADR435TRZ-EP | 制造商:Analog Devices 功能描述:ENHANCED PLASTIC PROCESS - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:V-Ref Precision 5V 10mA 8-Pin SOIC N Tube 制造商:Analog Devices 功能描述:Enhanced Plastic Process 制造商:Analog Devices 功能描述:Voltage Ref. 5.0V 0.04% Low Noise SOIC8 |
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