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| 型号： | AD584TH |
| 厂商： | Analog Devices Inc |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC ADJ TO-99-8 |
| 标准包装： | 1 |
| 基准类型： | 串联，可调节，精度 |
| 输出电压： | 2.5V，5V，7.5V，10V |
| 容差： | ±10% |
| 温度系数： | 15ppm/°C |
| 输入电压： | 4.5 V ~ 30 V |
| 通道数： | 1 |
| 电流 - 静态： | 1mA |
| 电流 - 输出： | 10mA |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-99-8 金属罐 |
| 供应商设备封装： | TO-99-8 |
| 包装： | 散装 |
| 产品目录页面： | 795 (CN2011-ZH PDF) |
Data Sheet
The AD584 can also use an NPN or NPN Darlington transistor to
boost its output current. Simply connect the 10 V output terminal
of the AD584 to the base of the NPN booster and take the
AD584
The temperature characteristics and long-term stability of the
device is essentially the same as that of a unit used in standard
3-terminal mode.
output from the booster emitter, as shown in Figure 13. The
5.0V pin or the 2.5V pin must connect to the actual output in
this configuration. Variable or adjustable outputs (as shown in
obtain outputs above 5.0 V.
1μF
V+
8
AD584
1
2
V OUT
5.0V
TAP
ANALOG
GND
RAW SUPPLY (≈5V > V OUT )
4
COMMON
V REF
V+
DARLINGTON
NPN 2N6057
R S
2.4k?
5%
–15V
–5V
8
1
10.0V
Figure 15. 2-Terminal, ?5 V Reference
V OUT
(5V, 12A
AD584
2.5V
5.0V
2
AS SHOWN)
3
4 1k?
COMMON
Figure 13. NPN Output Current Booster
THE AD584 AS A CURRENT LIMITER
The AD584 represents an alternative to current limiter diodes
that require factory selection to achieve a desired current. Use of
current limiting diodes often results in temperature coefficients
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
The minimum voltage required to drive the connection is 5 V.
The AD584 can also be used in 2-terminal mode to develop a
positive reference. V IN and V OUT are tied together and to the
positive supply through an appropriate supply resistor. The
performance characteristics are similar to those of a negative
2-terminal connection. The only advantage of this connection
over the standard 3-terminal connection is that a lower primary
supply can be used, as low as 0.5 V above the desired output
voltage. This type of operation requires considerable attention
to load and to the primary supply regulation to ensure that the
AD584 always remains within its regulating range of 1 mA to
5 mA (2 mA to 5 mA for operation beyond 85 ° C).
10 V REFERENCE WITH MULTIPLYING CMOS DACs
OR ADCs
The AD584 is ideal for application with the AD7533 10-bit
8
V+
1
V OUT = 2.5V
multiplying CMOS DAC, especially for low power applications.
It is equally suitable for the AD7574 8-bit ADC. In the standard
hook-up, as shown in Figure 16, the standard output voltages are
AD584
3
2.5V
TAP
=
i
2.5V
R
+ 0.75mA
inverted by the amplifier/DAC configuration to produce converted
voltage ranges. For example, a +10 V reference produces a 0 V to
4
R LOAD
?10 V range. If an OP1177 amplifier is used, total quiescent
COMMON
Figure 14. A Two-Component Precision Current Limiter
supply current is typically 2 mA.
+15V
NEGATIVE REFERENCE VOLTAGES FROM AN AD584
8
V+
The AD584 can also be used in a 2-terminal Zener mode to
provide a precision ?10 V, ?7.5 V, or ?5.0 V reference. As shown in
AD584
4
1
10.0V
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 V OUT . With
1 mA flowing through the AD584 in this mode, a typical unit
shows a 2 mV increase in the output level over that produced in
3-terminal mode. Also, note that the effective output impedance in
this connection increases from 0.2 Ω typical to 2 Ω. It is essential
COMMON
DIGITAL
INPUT
BIT 1 (MSB)
BIT 10 (LSB)
V REF
15 14
4 16
5
AD7533 1
13 2
3
R FB
I OUT 1
I OUT 2
+15V
V OUT
0V TO –10V
–15V
COMMON
to arrange the output load and the supply resistor, R S , 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).
Rev. C | Page 9 of 12
Figure 16. Low Power 10-Bit CMOS DAC Application
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD584TH/883 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Reference |
| AD584TH/883B | 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:Analog Devices 功能描述:V-REF PROGRAMMABLE 2.5V/5V/7.5V/10V 10MA 8PIN TO-99 - Rail/Tube 制造商:Analog Devices 功能描述:IC - PROGRAMMABLE V REF. 制造商:Analog Devices 功能描述:IC VOLT REF PROG 制造商:Analog Devices Inc. 功能描述:Voltage & Current References IC PROG V REF |
| AD584TH/HR | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Reference |
| AD584TQ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Reference |
| AD584TQ/883 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Reference |
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