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參數(shù)資料
| 型號(hào)： | AD1580ART-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 1.2 V Micropower, Precision Shunt Voltage Reference |
| 中文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.225 V, PDSO3 |
| 封裝： | TO-236AB, SOT-23, 3 PIN |
| 文件頁(yè)數(shù)： | 6/8頁(yè) |
| 文件大?。?/td> | 161K |
| 代理商： | AD1580ART-REEL7 |
AD1580
REV. 0
–6–
10ms/DIV
10μV/DIV
20μV/DIV
40μV/DIV
21μV rms
= 0.2ms
τ
= 960ms
(a)
(b)
(c)
Figure 13. Total RMS Noise
T URN-ON T IME
Many low power instrument manufacturers are becoming
increasingly concerned with the turn-on characteristics of
components being used in their systems. Fast turn-on components
often enable the end user to keep power off when not needed,
and yet respond quickly when the power is turned on for
operation. Figure 14a displays the turn-on characteristic of the
AD1580. 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. T wo components
normally associated with this are: time for active circuits to
settle and time for thermal gradients on the chip to stabilize.
T his characteristic is generated from cold-start operation and
represents the true turn-on waveform after power up. Figure 15
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 us,
and there is no long thermal tail when the horizontal scale is
expanded to 2 ms/div.
250mV/DIV
5μs/DIV
2.4V
0V
V
IN
C
L
= 200pF
Figure 14a. Response Time
V
IN
V
R
R
S
= 11.5k
R
L
C
L
V
OUT
Figure 14b. Turn-On, Settling, and Transient Test Circuit
Output turn-on time is modified when an external noise reduction
filter is used. When present, the time constant of the filter will
dominate overall settling.
OUTPUT ERROR
1mV/DIV 2 μs/DIV
2.4V
0V
V
IN
OUTPUT
0.5mV/DIV 2 ms/DIV
Figure 15. Turn-On Settling
T RANSIE NT RE SPONSE
Many A/D and D/A converters present transient current loads
to the reference, and poor reference response can degrade the
converter’s performance.
Figure 16 displays both the coarse and fine settling characteristics
of the device to load transients of
±
50
μ
A.
I
R
= 100μA + 50μA STEP
I
R
= 100μA – 50μA STEP
20mV/DIV
1mV/DIV
1μs/DIV
20mV/DIV
1mV/DIV
(a)
(b)
Figure 16. Transient Settling
Figure 16a shows the settling characteristics of the device for an
increased reverse current of 50
μ
A. Figure 16b shows the
response when the reverse current is decreased by 50
μ
A. T he
transients settle to 1 mV in about 3
μ
s.
Attempts to drive a large capacitive load (in excess of 1,000 pF)
may result in ringing, as shown in the step response photo
(Figure 17). T his is due to the additional poles formed by the
load capacitance and the output impedance of the reference. A
recommended method of driving capacitive loads of this magnitude
is shown in Figure 14b. 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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| AD1580ARTZ-REEL | 功能描述:IC VREF SHUNT PREC 1.225V SOT23 RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 基準(zhǔn)類(lèi)型:旁路，精度 輸出電壓:5V 容差:±0.5% 溫度系數(shù):100ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:80µA 電流 - 靜態(tài):- 電流 - 輸出:15mA 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:TO-236-3，SC-59，SOT-23-3 供應(yīng)商設(shè)備封裝:SOT-23-3 包裝:帶卷 (TR) 其它名稱(chēng):LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
| AD1580ARTZ-REEL7 | 功能描述:IC VREF SHUNT PREC 1.225V SOT23 RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 基準(zhǔn)類(lèi)型:旁路，精度 輸出電壓:3V 容差:±0.5% 溫度系數(shù):100ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:82µA 電流 - 靜態(tài):- 電流 - 輸出:15mA 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:6-TSSOP（5 引線），SC-88A，SOT-353 供應(yīng)商設(shè)備封裝:SC-70-5 包裝:帶卷 (TR) 其它名稱(chēng):296-20888-2 |
| AD1580ARTZ-REEL7 | 制造商:Analog Devices 功能描述:Voltage Reference |
| AD1580B | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:1.2 V Micropower, Precision Shunt Voltage Reference |
| AD1580BKSZ-REEL | 功能描述:IC VREF SHUNT PREC 1.225V SC70-3 RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 產(chǎn)品培訓(xùn)模塊:Voltage Reference Basics 標(biāo)準(zhǔn)包裝:100 系列:- 基準(zhǔn)類(lèi)型:旁路，精度 輸出電壓:4.096V 容差:±0.075% 溫度系數(shù):50ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:1µA 電流 - 靜態(tài):- 電流 - 輸出:10mA 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:管件 |
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