- 您现在的位置：买卖IC网 > PDF目录1778 > ADR512ART-R2 (Analog Devices Inc)IC VREF SHUNT PREC 1.2V SOT-23-3 PDF资料下载
参数资料
| 型号： | ADR512ART-R2 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC VREF SHUNT PREC 1.2V SOT-23-3 |
| 设计资源： | 30 V Low Cost DAC Using AD5292 Digital Potentiometer (CN0111) Programmable Bidirectional Current Source Using AD5292 and ADA4091-4 (CN0117) Versatile High Precision Programmable Current Sources Using DACs, Op Amps, and MOSFET Transistors (CN0151) |
| 标准包装： | 1 |
| 基准类型： | 旁路，精度 |
| 输出电压： | 1.2V |
| 容差： | ±0.3% |
| 温度系数： | 60ppm/°C |
| 通道数： | 1 |
| 电流 - 阴极： | 100µA |
| 电流 - 输出： | 10mA |
| 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： | 标准包装 |
| 其它名称： | ADR512ART-R2DKR |
ADR512
APPLICATIONS SECTION
The ADR512 is a 1.2 V precision shunt voltage reference. It is
designed to operate without an external output capacitor
between the positive and negative terminals for stability. An
external capacitor can be used for additional filtering of the
supply.
As with all shunt voltage references, an external bias resistor
(R BIAS ) is required between the supply voltage and the ADR512
(see Figure 2). R BIAS sets the current that is required to pass
Data Sheet
OUTPUT VOLTAGE TRIM
Using a mechanical or digital potentiometer, the output voltage
illustrates how the output voltage can be trimmed, using a 10 kΩ
potentiometer.
V CC
R BIAS
through the load (I L ) and the ADR512 (I Q ). The load and the
supply voltage can vary, thus R BIAS is chosen based on
? R BIAS must be small enough to supply the minimum I Q
ADR512
R1
100k?
POT
50k ?
V OUT
current to the ADR512 even when the supply voltage is at
its minimum and the load current is at its maximum value.
? R BIAS also needs to be large enough so that I Q does not
exceed 10 mA when the supply voltage is at its maximum
and the load current is at its minimum.
Given these conditions, R BIAS is determined by the supply
voltage (V S ), the load and operating current (I L and I Q ) of the
ADR512, and the ADR512’s output voltage.
R BIAS = (V S ? V OUT )/(I L + I Q ) (3)
ADJUSTABLE PRECISION VOLTAGE SOURCE
The ADR512, combined with a precision low input bias op amp
such as the AD8610, can be used to output a precise adjustable
voltage. Figure 11 illustrates the implementation of this application
Figure 12. Output Voltage Trim
USING THE ADR512 WITH PRECISION DATA
CONVERTERS
The compact ADR512 package and the device’s low minimum
operating current requirement make it ideal for use in battery
powered portable instruments, such as the AD7533 CMOS
multiplying DAC, that use precision data converters.
the AD7533, a CMOS multiplying DAC. Such a DAC requires a
negative voltage input in order to provide a positive output
range. In this application, the ADR512 is supplying a ?1.2 V
reference to the REF input of the AD7533.
using the ADR512.
+
0
MSB
9
LSB
The output of the op amp, V OUT , is determined by the gain of the
circuit, which is completely dependent on resistors R2 and R1.
ADR512
–
V DD
1
1
AD7533
V OUT
= 1 +
R 2
R 1
(4)
R2
G N
3
2
1
15
An additional capacitor in parallel with R2 can be added to
filter out high frequency noise. The value of C2 is dependent on
the value of R2.
–V DD
+
V OUT = 0V TO 1.2V
–
V CC
R BIAS
1.2V
AD8610
V OUT = 1.2V
(1 + R2/R1)
Figure 13. ADR512 as a Reference for a 10-Bit CMOS DAC (AD7533)
ADR512
R1
R2
C2 (OPTIONAL)
Figure 11. Adjustable Precision Voltage Source
Rev. A | Page 8 of 12
相关PDF资料 |
PDF描述 |
|---|---|
| ADR520ARTZ-REEL7 | IC VREF SHUNT PREC 2.048V SOT23 |
| ADUC7033BSTZ-88-RL | IC BATT SENSOR PREC 48LQFP |
| ADUM3070ARQZ | IC REG PUSH-PLL CTRLR ISO 16SSOP |
| AH284-WL-7 | IC HALL FAN CTRLR 500MA SC59-3 |
| AH285-WL-7 | IC HALL FAN CTRLR 400MA SC59-3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADR512ART-REEL7 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| ADR512ARTZ-REEL7 | 功能描述:IC VREF SHUNT PREC 1.2V SOT-23-3 RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 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 |
| ADR512WARTZ-R7 | 功能描述:IC VREF SHUNT PREC 1.2V SOT-23-3 RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 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 |
| ADR520 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Precision Shunt Mode Voltage References |
| ADR520A | 制造商:AD 制造商全称:Analog Devices 功能描述:High Precision Shunt Mode Voltage References |
发布紧急采购，3分钟左右您将得到回复。