收藏本站
100k ? Precision-Matched Resistor-Divider in
SOT23
Typical Operating Characteristics (continued)
(V P1-P2 = 10V, T A = +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION
SPECTRAL NOISE DENSITY
PLUS NOISE RESPONSE
1000
RATIO 1:1
SIGNAL CONNECTED TO P2
P1 GROUNDED
100
10
1:1 RATIO
20Hz TO 20kHz BANDPASS
100
10
V P1-P2 = 2V
V P1-P2 = 10V
1
0.1
0.01
0.001
0.0001
1
10
100
1k
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
Pin Description
PIN
1
2
3
NAME
P1
P2
P3
R 1 Connection Terminal
R 2 Connection Terminal
Set-Point Connection Terminal
FUNCTION
( V MAX ) 2 ( 80 V ) 2
P DISS = = = 64 mW
Detailed Description
As shown in the Block Diagram , the MAX5490 consists
of two precision, low-ratio-drift resistors with an end-to-
end resistance of 100k ? (R 1 + R 2 ). P3 is the set point
of the divider. The maximum working voltage of the
MAX5490 is 80V. This device offers a wide range of
resistance ratios (R 1 /R 2 ) from 1:1 to 100:1 and is ideal
for precision operational amplifier gain/attenuation con-
trol. A maximum initial ratio accuracy of 0.035% and a
low 1ppm/ ° C ratio drift enhance system accuracy.
Applications Information
Self-Heating and Error
Applying a voltage across terminals P1 and P2 causes
the device to heat up due to power dissipation. In high-
voltage applications, consider the error in resistance-
ratio temperature coefficient caused by self-heating.
The worst-case self-heating occurs when the operating
voltage attains its maximum value. Approximate the
result of power dissipation under this condition as:
R 100 k ?
The thermal resistance from junction to ambient, θ J-A ,
for a 3-pin SOT23 package is 141°C/W. Calculate the
resulting temperature rise as:
? T = 64mW x 141°C/W = 9.02°C
If the ratio temperature coefficient is 1ppm/°C (typ), the
total error introduced by self-heating is:
9.02 ° C x 1ppm/ ° C = 9.02ppm
4
_______________________________________________________________________________________
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MAX5491NA01500+T RES NET MULT OHM 2 RES SOT-23
MAX5492LB10000+T RES NET MULT OHM 2 RES SOT-23
MB2181SS2G13-CC SWITCH PUSH 4PDT 0.4VA 28V
MB2185SB1W01-6C-A SWITCH PUSHBUTTON 4PDT 6A 125V
MB2411JA01-G-1A SWITCH PUSHBUTTON SPDT 3A 125V
MB2461A2W30-FA SWITCH PUSHBUTTON DPDT 3A 125V
MB2461E1G03-HA SWITCH PUSH DPDT 0.4VA 28V
MBH2731 SWITCH PLUNGER ASSMBLY
相关代理商/技术参数
MAX5490GA01000-T 功能描述:电阻器网络与阵列 RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
MAX5490GB01000 制造商:Maxim Integrated Products 功能描述:100KOHMS PRECISION-MATCHED RESISTOR - Cut Tape Product
MAX5490GB01000+ 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 100KOHM 3PIN SOT-23 - Cut Tape Product
MAX5490GB01000+T 功能描述:电阻器网络与阵列 100kOhm Precision Match Res/Divider RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
MAX5490GB01000-T 功能描述:电阻器网络与阵列 RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
MAX5490GC01000 制造商:Maxim Integrated Products 功能描述:100KOHMS PRECISION-MATCHED RESISTOR - Cut Tape Product
MAX5490GC01000+ 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 100KOHM 3PIN SOT-23 - Cut Tape Product
MAX5490GC01000+T 功能描述:电阻器网络与阵列 100kOhm Precision Match Res/Divider RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel