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| 型号： | AD1580BRTZ-R2 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC VREF SHUNT PREC 1.225V SOT23 |
| 标准包装： | 1 |
| 基准类型： | 旁路，精度 |
| 输出电压： | 1.225V |
| 容差： | ±0.1% |
| 温度系数： | 50ppm/°C |
| 通道数： | 1 |
| 电流 - 阴极： | 50µA |
| 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： | AD1580BRTZ-R2DKR |
AD1580
NOISE PERFORMANCE AND REDUCTION
The noise generated by the AD1580 is typically less than
5 μV p-p over the 0.1 Hz to 10 Hz band. Figure 17 shows the
0.1 Hz to 10 Hz noise of a typical AD1580. Noise in a 10 Hz to
10 kHz bandwidth is approximately 20 μV rms (see Figure 18a).
If further noise reduction is desired, a 1-pole low-pass filter can
be added between the output pin and ground. A time constant
of 0.2 ms has a ?3 dB point at about 800 Hz and reduces the
high frequency noise to about 6.5 μV rms (see Figure 18b).
A time constant of 960 ms has a ?3 dB point at 165 Hz and
reduces the high frequency noise to about 2.9 μV rms (see
Figure 18c).
Upon application of power (cold start), the time required for
the output voltage to reach its final value within a specified
error is the turn-on settling time. Two components normally
associated with this are time for active circuits to settle and time
for thermal gradients on the chip to stabilize. This characteristic
is generated from cold start operation and represents the true
turn-on waveform after power-up. Figure 21 shows both the
coarse and fine turn-on settling characteristics of the device;
the total settling time to within 1.0 mV is about 6 μs, and there
is no long thermal tail when the horizontal scale is expanded to
2 ms/div.
2.4V
0V
V IN
4.5μV p-p
C L = 200pF
250mV/DIV
5μs/DIV
1μV/DIV
1s/DIV
Figure 19. Turn-On Response Time
Figure 17. 0.1 Hz to 10 Hz Voltage Noise
R S = 11.5k ?
+
R L
40μV/DIV
21μV rms
V IN
V R
C L
V OUT
–
(a)
Figure 20. Turn-On, Settling, and Transient Test Circuit
20μV/DIV
10μV/DIV
6.5μV rms, τ = 0.2ms
2.90μV rms, τ = 960ms
(b)
Output turn-on time is modified when an external noise
reduction filter is used. When present, the time constant
of the filter dominates overall settling.
2.4V
(c)
10ms/DIV
Figure 18. Total RMS Noise
TURN-ON TIME
Many low power instrument manufacturers are becoming
increasingly concerned with the turn-on characteristics of
components being used in their systems. Fast turn-on compo-
nents often enable the end user to keep power off when not
needed, and yet those components respond quickly when
the power is turned on for operation. Figure 19 displays the
turn-on characteristic of the AD1580.
Rev. F | Page 8 of 12
V IN
0V
OUTPUT ERROR
1mV/DIV, 2μs/DIV
OUTPUT
0.5mV/DIV, 2ms/DIV
Figure 21. Turn-On Settling
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| AD1580BRTZ-REEL7 | 功能描述:IC VREF SHUNT PREC 1.225V SOT23 RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 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 |
| AD1580BRTZ-REEL7 | 制造商:Analog Devices 功能描述:Voltage Reference |
| AD1580BRTZ-REEL7 | 制造商:Analog Devices 功能描述:VOLTAGE REFERENCE 1.2V |
| AD1580BRTZ-RL7 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD1580CRT-REEL7 | 制造商:Analog Devices 功能描述: |
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