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| 型號： | AD1580ART-REEL1 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 1.2 V Micropower, Precision Shunt Voltage Reference |
| 中文描述： | 1.2伏特微，精密并聯(lián)電壓基準(zhǔn) |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 161K |
| 代理商： | AD1580ART-REEL1 |
AD1580
REV. 0
–5–
(50
×
10
–6
×
1.225 V
×
65
°
C) thus, the unit is guaranteed to be
1.225 V
±
5 mV over the operating temperature range.
Duplication of these results requires a combination of high
accuracy and stable temperature control in a test system.
Evaluation of the AD1580 will produce a curve similar to that in
Figures 1 and 8.
VOLT AGE OUT PUT NONLINE ARIT Y VE RSUS
T E MPE RAT URE
When using a reference with data converters it is important to
understand how temperature drift affects the overall converter
performance. T he nonlinearity of the reference output drift
represents additional error that is not easily calibrated out of the
system. T his characteristic (Figure 9) is generated by normal-
izing the measured drift characteristic to the end point average
drift. T he residual drift error of approximately 500 ppm shows
that the AD1580 is compatible with systems that require 10-bit
accurate temperature performance.
TEMPERATURE –
°
C
600
300
0
–55
125
–35
R
–15
5
25
45
65
85
105
500
400
200
100
Figure 9. Residual Drift Error
RE VE RSE VOLT AGE HY ST E RE SIS
A major requirement for high performance industrial equipment
manufacturers is a consistent output voltage at nominal tempera-
ture following operation over the operating temperature range.
T his characteristic is generated by measuring the difference
between the output voltage at +25
°
C after operation at +85
°
C,
and the output, also at +25
°
C after operation at –40
°
C. Figure 10
displays the hysteresis associated with AD1580. T his characteristic
exists in all references and has been minimized in the AD1580.
Q
HYSTERESIS VOLTAGE – μV
0
15
20
25
30
35
40
–300
–200
–100
0
100
200
400
300
5
10
Figure 10. Reverse Voltage Hysteresis Distribution
OUT PUT IMPE DANCE VE RSUS FRE QUE NCY
Understanding the effect of the reverse dynamic output
impedance in a practical application may be important to
successfully apply the AD1580. A voltage divider is formed by
the AD1580’s output impedance and the external source
impedance. When using an external source resistor of about
30 k
(I
R
= 100
μ
A), 1% of the noise from a 100 kHz switching
power supply is developed at the output of the AD1580. Figure
11 shows how a 1
μ
F load capacitor connected directly across
the AD1580 reduces the affect of power supply noise to less
than 0.01%.
1k
10
O
0.1
100
100k
10k
1k
10
1
100
FREQUENCY – Hz
1M
I
= 0.1I
R
I
R
= 100μA
I
R
= 1mA
C
L
= 0
C
L
= 1μF
Figure 11. Output Impedance vs. Frequency
NOISE PE RFORMANCE AND RE DUCT ION
T he noise generated by the AD1580 is typically less than 5
μ
V p-p
over the 0.1 Hz to 10 Hz band. Figure 12 shows the 0.1 Hz to
10 Hz noise of a typical AD1580. Noise in a 10 Hz–10 kHz
bandwidth is approximately 20
μ
V rms (Figure 13a). If further
noise reduction is desired, a 1-pole low-pass filter may be added
between the output pin and ground. A time constant of 0.2 ms
will have a –3 dB point at about 800 Hz, and will reduce the high
frequency noise to about 6.5
μ
V rms, (Figure 13b). A time
constant of 960 ms will have a –3 dB point at 165 Hz, and will
reduce the high frequency noise to about 2.9
μ
V rms (Figure
13c).
4.5μV p-p
1μV/DIV
1s/DIV
Figure 12. 0.1 Hz–10 Hz Voltage Noise
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD1580ART-REEL7 | 1.2 V Micropower, Precision Shunt Voltage Reference |
| AD1580B | ECONOLINE: RD & RC - Dual Output from a Single Input Rail- 1kVDC & 2kVDC Isolation- Power Sharing on Output- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 86% |
| AD1580BRT | 1.2 V Micropower, Precision Shunt Voltage Reference |
| AD1580BRT-REEL1 | 1.2 V Micropower, Precision Shunt Voltage Reference |
| AD1580BRT-REEL7 | 1.2 V Micropower, Precision Shunt Voltage Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD1580ART-REEL7 | 功能描述:IC VREF SHUNT PREC 1.225V SOT23 RoHS:否 類別: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:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
| AD1580ARTZ-REEL | 功能描述:IC VREF SHUNT PREC 1.225V SOT23 RoHS:是 類別: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:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
| AD1580ARTZ-REEL7 | 功能描述:IC VREF SHUNT PREC 1.225V SOT23 RoHS:是 類別: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: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:Analog Devices 功能描述:1.2 V Micropower, Precision Shunt Voltage Reference |
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