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| 型号： | ADR1500 |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | 1.2875 V Micropower, Shunt Voltage Reference |
| 中文描述： | 1.2875 V微，并联电压参考 |
| 文件页数： | 7/8页 |
| 文件大小： | 190K |
| 代理商： | ADR1500 |
ADR1500
Rev. 0 | Page 7 of 8
0
OUTPUT ERROR
1mV/DIV 2μs/DIV
OUTPUT
0.5mV/DIV 2ms/DIV
2.4V
0V
V
IN
Figure 10. Turn-On Settling Time
Attempts to drive a large capacitive load (in excess of 1000 pF)
can result in ringing. This is due to the additional poles formed
by the load capacitance and the output impedance of the reference.
A recommended method for driving capacitive loads of this
magnitude is shown in Figure 11.
0
+
V
R
–
V
OUT
C
L
R
S
= 11.5k
V
IN
R
L
Figure 11. Turn-On, Settling, and Transient Test Circuit
TRANSIENT RESPONSE
Many ADCs and DACs present transient current loads to the
reference. Poor reference response can degrade the converter’s
performance. Figure 12 displays both the coarse and fine
settling characteristics of the device to load transient of ±50 μA.
It shows the settling characteristics of the device for an
increased reverse current of 50 μA and the response when the
reverse current is decreased by 50 μA. The transients settle to
1 mV in about 3 μs.
0
I
R
= 100μA + 50μA STEP
I
R
= 100μA – 50μA STEP
1μs/DIV
20mV/DIV
1mV/DIV
20mV/DIV
1mV/DIV
Figure 12. Transient Settling Time
A resistor isolates the capacitive load from the output stage,
while the capacitor provides a single-pole, low-pass filter and
lowers the output noise.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADR1500BKSZ-REEL | 功能描述:IC VREF SHUNT PREC 1.2875V SC-70 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 |
| ADR1500BKSZ-REEL7 | 功能描述:IC VREF SHUNT PREC 1.2875V SC-70 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 |
| ADR1581 | 制造商:AD 制造商全称:Analog Devices 功能描述:1.25 V Micropower, Precision Shunt Voltage Reference |
| ADR1581ARTZ-R2 | 功能描述:IC VREF SHUNT PREC 1.25V SOT23-3 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 |
| ADR1581ARTZ-R21 | 制造商:AD 制造商全称:Analog Devices 功能描述:1.25 V Micropower, Precision Shunt Voltage Reference |
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