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參數(shù)資料
| 型號： | AD1580B |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 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% |
| 中文描述： | 1.2伏特微，精密并聯(lián)電壓基準(zhǔn) |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 161K |
| 代理商： | AD1580B |
AD1580
REV. 0
–7–
10mV/DIV
50μs/DIV
C
L
= 0.01μF
V
IN
2.0V
1.8V
Figure 17. Transient Response with Capacitive Load
PRE CISION MICROPOWE R LOW DROPOUT
RE FE RE NC E
T he circuit in Figure 18 provides an ideal solution for making a
stable voltage reference with low standby power consumption,
low input/output dropout capability, and minimum noise
output. T he amplifier both buffers and optionally scales up the
AD1580 output voltage, V
R
. Output voltages as high as 2.1 V
can supply 1 mA of load current. A one-pole filter connected
between the AD1580 and the OP193 input may be used to
achieve low output noise. T he nominal quiescent power consump-
tion is a mere 200
μ
W.
3V
34.8k
205
4.7μF
AD1580
OP193
R3
R2
V
OUT
= +1.225 (1+R2/R3)
V
OUT
= +1.225V
OR
Figure 18. Micropower Buffered Reference
USING T HE AD1580 WIT H 3 V DAT A CONVE RT E RS
T he AD1580’s low output drift (50 ppm/
°
C) and compact sub-
miniature SOT -23 package makes it ideally suited for today’s
high performance converters in space critical applications.
One family of ADCs that the AD1580 is well suited for is the
AD7714-3 and AD7715-3. T he AD7714/AD7715 are charge-
balancing (sigma-delta) A/D converters with on-chip digital
filtering intended for the measurement of wide dynamic range,
low frequency signals such as those representing chemical,
physical or biological processes. Figure 19 shows the AD1580
connected to the AD7714/AD7715 for 3 V operation.
AD7714/15–3
C
(3–8pF)
SWITCHING
FREQUENCY DEPENDS
ON F
CLKIN
AD1580
3V
34.8k
REFIN(+)
REFIN(–)
R
5k
(TYP)
HIGH
IMPEDANCE
>1G
Figure 19. Reference Circuit for the AD7714/AD7715–3
T he AD1580 is ideal for creating the reference level to use with
12-bit multiplying DACs such as the AD7943, AD7945, and
AD7948. In the single supply bias mode (Figure 20), the
impedance seen looking into the I
OUT 2
terminal changes with
DAC code. If the AD1580 drives I
OUT 2
and AGND directly,
less than 0.2 LSBs of additional linearity error will result. T he
buffer amp eliminates any linearity degradation that could result
from variations in the reference level .
DAC
AD7943/45/48
V
REF
V
IN
V
DD
RBF
I
OUT1
I
OUT2
A1: OP295
AD822
OP2283
V
OUT
AGND
DGND
A1
A1
C1
+3.3V
41.2k
+3.3V
AD1580
SIGNAL GROUND
Figure 20. Single Supply System
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AD1580BKSZ-REEL | 功能描述:IC VREF SHUNT PREC 1.225V SC70-3 RoHS:是 類別: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 |
| AD1580BKSZ-REEL7 | 功能描述:IC VREF SHUNT PREC 1.225V SC70-3 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 |
| AD1580BRT | 制造商:AD 制造商全稱:Analog Devices 功能描述:1.2 V Micropower, Precision Shunt Voltage Reference |
| AD1580BRT-R2 | 制造商:Analog Devices 功能描述:V-Ref Precision 1.225V 10mA 3-Pin SOT-23 T/R 制造商:Rochester Electronics LLC 功能描述:IC, 1.2V MICROPOWER REF - Bulk 制造商:Analog Devices 功能描述:IC MICROPOWER VOLT REF 1.2V |
| AD1580BRT-REEL | 制造商:Rochester Electronics LLC 功能描述:IC, 1.2V MICROPOWER REF - Tape and Reel |
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