参数资料
型号: MC1403DG
厂商: ON Semiconductor
文件页数: 2/8页
文件大小: 0K
描述: IC VREF SERIES PREC 2.5V 8-SOICN
产品变化通告: Product Obsolescence 01/Jul/2009
标准包装: 98
基准类型: 串联,精度
输出电压: 2.5V
容差: ±25mV
温度系数: 40ppm/°C
输入电压: 4.5 V ~ 40 V
通道数: 1
电流 - 静态: 1.5mA
电流 - 输出: 10mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOICN
包装: 管件
其它名称: MC1403DG-ND
MC1403DGOS
MC1403, B
+ 5.0 V
1
MC1403
2 2.5 V
1.0 k
Full Scale
Adjust 500 W
3
R1
R2
I Ref
Reference
Amplifier
Monolithic D/A
Converter
*0.1 m F
C1
1.2 k
R3
* Caution: System stability may be affected if output capacitance
* exceeds 1.0 m F. Using higher capacitance values is not
* recommended and should be carefully considered.
Figure 1. A Reference for Monolithic D/A Converters
Providing the Reference Current
for ON Semiconductor Monolithic D/A Converters
The MC1403 makes an ideal reference for many mono-
lithic D/A converters, requiring a stable current reference of
nominally 2.0 mA. This can be easily obtained from the
MC1403 with the addition of a series resistor, R1. A variable
resistor, R2, is recommended to provide means for full?
scale adjust on the D/A converter.
The resistor R3 improves temperature performance by
matching the impedance on both inputs of the D/A reference
amplifier. The capacitor decouples any noise present on the
reference line. It is essential if the D/A converter is located
any appreciable distance from the reference.
A single MC1403 reference can provide the required
current input for up to five of the monolithic D/A converters.
ELECTRICAL CHARACTERISTICS (V in = 15 V, T A = 25 ° C , unless otherwise noted.)
Output Voltage
Characteristic
Symbol
V out
Min
2.475
Typ
2.5
Max
2.525
Unit
V
(I O = 0 mA)
Temperature Coefficient of Output Voltage*
D V O / D T
?
10
40
ppm/ ° C
MC1403
Output Voltage Change*
(Over specified temperature range)
D V O
mV
MC1403 B 0 to + 70 ° C
MC1403B ?40 to + 85 ° C
?
?
?
?
7.0
12.5
Line Regulation (I O = 0 mA)
(15 V p V I p 40 V)
(4.5 V p V I p 15 V)
Load Regulation
Reg line
Reg load
?
?
?
1.2
0.6
?
4.5
3.0
10
mV
mV
(0 mA < I O < 10 mA)
Quiescent Current
I Q
?
1.2
1.5
mA
(I O = 0 mA)
*Guaranteed but not tested.
http://onsemi.com
2
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