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參數(shù)資料
| 型號(hào)： | AD584JN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Pin Programmable Precision Voltage Reference |
| 中文描述： | 3-OUTPUT THREE TERM VOLTAGE REFERENCE, 10 V, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁(yè)數(shù)： | 6/8頁(yè) |
| 文件大?。?/td> | 304K |
| 代理商： | AD584JN |
AD584
REV. A
–6–
USING THE STROBE TERMINAL
The AD584 has a strobe input which can be used to zero the
output. This unique feature permits a variety of new applica-
tions in signal and power conditioning circuits.
Figure 9 illustrates the strobe connection. A simple NPN switch
can be used to translate a TTL logic signal into a strobe of the
output. The AD584 operates normally when there is no current
drawn from Pin 5. Bringing this terminal low, to less than
200 mV, will allow the output voltage to go to zero. In this
mode the AD584 should not be required to source or sink cur-
rent (unless a 0.7 V residual output is permissible). If the
AD584 is required to sink a transient current while strobed off,
the strobe terminal input current should be limited by a 100
resistor as shown in Figure 9.
The strobe terminal will tolerate up to 5
A leakage and its
driver should be capable of sinking 500
A continuous. A low
leakage open collector gate can be used to drive the strobe ter-
minal directly, provided the gate can withstand the AD584 out-
put voltage plus one volt.
Figure 9. Use of the Strobe Terminal
PRECISION HIGH CURRENT SUPPLY
The AD584 can be easily connected to a power PNP or power
Darlington PNP device to provide much greater output current
capability. The circuit shown in Figure 10 delivers a precision
10 volt output with up to 4 amperes supplied to the load. The
0.1
F capacitor is required only if the load has a significant
capacitive component. If the load is purely resistive, improved
high frequency supply rejection results from removing the
capacitor.
Figure 10. High Current Precision Supply
The AD584 can also use an NPN or Darlington NPN transistor
to boost its output current. Simply connect the 10 V output ter-
minal of the AD584 to the base of the NPN booster and take
the output from the booster emitter as shown in Figure 11. The
5.0 V or 2.5 V pin must connect to the actual output in this con-
figuration. Variable or adjustable outputs (as shown in Figures 1
and 2) may be combined with +5.0 V connection to obtain out-
puts above +5.0 V.
THE AD584 AS A CURRENT LIMITER
The AD584 represents an alternative to current limiter diodes
which require factory selection to achieve a desired current. Use
of current limiting diodes often results in temperature coeffi-
cients of 1%/
°C. Use of the AD584 in this mode is not limited
to a set current limit; it can be programmed from 0.75 mA to
5 mA with the insertion of a single external resistor (see Figure
12). Of course, the minimum voltage required to drive the con-
nection is 5 volts.
Figure 11. NPN Output Current Booster
Figure 12. A Two-Component Precision Current Limiter
NEGATIVE REFERENCE VOLTAGES FROM AN AD584
The AD584 can also be used in a two-terminal “Zener” mode
to provide a precision –10 volt, –7.5 volt or –5.0 volt reference.
As shown in Figure 13, the VIN and VOUT terminals are con-
nected together to the positive supply (in this case, ground).
The AD584 common pin is connected through a resistor to the
negative supply. The output is now taken from the common pin
instead of VOUT. With 1 mA flowing through the AD584 in this
mode, a typical unit will show a 2 mV increase in output level
over that produced in the three-terminal mode. Note also that
the effective output impedance in this connection increases from
0.2
typical to 2 . It is essential to arrange the output load
and the supply resistor, RS, so that the net current through the
AD584 is always between 1 mA and 5 mA (between 2 mA and
5 mA for operation beyond +85
°C). The temperature character-
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相關(guān)代理商/技術(shù)參數(shù) |
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| AD584JNZ | 功能描述:IC VREF SERIES PREC ADJ 8-PDIP 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 |
| AD584K | 制造商:AD 制造商全稱:Analog Devices 功能描述:Pin Programmable Precision Voltage Reference |
| AD584KCSA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Reference |
| AD584KH | 功能描述:IC VREF SERIES PREC ADJ TO-99-8 RoHS:否 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 基準(zhǔn)類型:旁路，可調(diào)節(jié)，精度 輸出電壓:1.24 V ~ 16 V 容差:±0.5% 溫度系數(shù):- 輸入電壓:1.24 V ~ 16 V 通道數(shù):1 電流 - 陰極:100µA 電流 - 靜態(tài):- 電流 - 輸出:20mA 工作溫度:-40°C ~ 85°C 安裝類型:通孔 封裝/外殼:TO-226-3、TO-92-3（TO-226AA）成形引線 供應(yīng)商設(shè)備封裝:TO-92-3 包裝:帶卷 (TR) |
| AD584KH/+ | 制造商:Analog Devices 功能描述:V-Ref Programmable 2.5V/5V/7.5V/10V 10mA 8-Pin TO-99 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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