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參數(shù)資料
| 型號(hào)： | AD1582BRTRL |
| 英文描述： | Voltage Reference |
| 中文描述： | 電壓基準(zhǔn) |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 167K |
| 代理商： | AD1582BRTRL |
AD1582/AD1583/AD1584/AD1585
–10–
REV. A
AC PERFORMANCE
To successfully apply the AD1582/AD1583/AD1584/AD1585
family of references, it is important to understand the effects of
dynamic output impedance and power supply rejection. In
Figure 14a, a voltage divider is formed by the AD1582’s output
impedance and the external source impedance. Figure 14b
shows the effect of varying the load capacitor on the reference
output. Power supply rejection ratio (PSRR) should be deter-
mined when characterizing the ac performance of a series
voltage reference. Figure 15a shows a test circuit used to
measure PSRR, and Figure 15b demonstrates the AD1582’s
ability to attenuate line voltage ripple.
2X V
OUT
10k
10k
2V
100 A
10k
2k
V
LOAD
DC
5V
5 F
1 F
DUT
X1
Figure 14a. Output Impedance Test Circuit
100
1
0.1
1E+01
O
10
FREQUENCY
–
Hz
1E+02
1E+03
1E+04
1E+05
1E+06
1 F CAP
1585
1582
Figure 14b. Output Impedance vs. Frequency
5V 100mV
0.22 F
DUT
0.22 F
V
OUT
10V
10k
10k
200mV
X1
Figure 15a. Ripple Rejection Test Circuit
FREQUENCY
–
Hz
100
90
10
1.E+06
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
50
20
P
–
80
70
60
40
30
10
1582
1585
Figure 15b. Ripple Rejection vs. Frequency
NOISE PERFORMANCE AND REDUCTION
The noise generated by the AD1582 is typically less then
70
μ
V p-p over the 0.1 Hz to 10 Hz frequency band. Figure 16
shows the 0.1 Hz to 10 Hz noise of a typical AD1582. The noise
measurement is made with a high gain bandpass filter. Noise in
a 10 Hz to 10 kHz region is approximately 50
μ
V rms. Figure 17
shows the broadband noise of a typical AD1582. 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 roughly 800 Hz, and will reduce the
high frequency noise to about 16
μ
V rms. It should be noted,
however, that while additional filtering on the output may improve
the noise performance of the AD1582/AD1583/AD1584/AD1585
family, the added output impedance could degrade the ac
performance of the references.
100
90
10
0%
10 V
1s
Figure 16. 0.1–10 Hz Voltage Noise
10
0%
100
90
10ms
100 V
Figure 17. 10 Hz to 10 kHz Wideband Noise
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD1582BRTRL7 | Voltage Reference |
| AD1583ART | Voltage Reference |
| AD1583ARTRL | Voltage Reference |
| AD1583ARTRL7 | Voltage Reference |
| AD1583BRT | Voltage Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD1582BRTRL7 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Reference |
| AD1582BRTZ | 制造商:Analog Devices 功能描述: |
| AD1582BRTZ-REEL7 | 功能描述:IC VREF SERIES PREC 2.5V SOT23-3 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 |
| AD1582BRTZ-REEL7 | 制造商:Analog Devices 功能描述:Voltage Reference |
| AD1582BRTZ-REEL7 | 制造商:Analog Devices 功能描述:VOLTAGE REFERENCE 2.5V |
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