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参数资料
| 型号： | MAX5491SA03200+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/7页 |
| 文件大小： | 0K |
| 描述： | RES NET MULT OHM 2 RES SOT-23 |
| 产品培训模块： | Precision Resistor Networks Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | MAX5491 |
| 电路类型： | 分压器 |
| 电阻（欧姆）： | 7.14k，22.86k |
| 电阻数： | 2 |
| 引脚数： | 3 |
| 每个元件的功率： | 87.5mW |
| 容差： | ±0.035% |
| 温度系数： | ±35ppm/°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-236-3，SC-59，SOT-23-3 |
| 供应商设备封装： | SOT-23-3 |
| 尺寸/尺寸： | 0.115" L x 0.051" W（2.92mm x 1.30mm） |
| 高度： | 0.044"（1.12mm） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
Precision-Matched Resistor-Divider in SOT23
Typical Applications
= ? 1
A =
V OUT
V IN
R
R 2
IN
A =
V OUT
V IN
= 1 +
R 1
R 2
P3
OUT
P3
OUT
IN
P2
MAX5491
P1
P2
MAX5491
P1
R 2
R 1
R 2
R 1
Figure 1. Inverting Amplifier Configuration
Figure 2. Noninverting Amplifier Configuration
IN
A =
V OUT
V IN
=
R 2
R 1 + R 2
IN
P1
A =
V OUT
V IN
=
R 2
R 1 + R 2
P1
MAX5491
R 1
MAX5491
R 1
P3
P3
OUT
R 2
OUT
R 2
P2
Figure 3. Buffered Attenuator
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:
P2
Figure 4. Attenuator with Buffer
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 = 83.3mW x 141°C/W = 11.7°C
If the ratio temperature coefficient is 2ppm/°C (typ), the
total error introduced by self-heating is:
11.7 ° C x 2ppm/ ° C = 23.4ppm
P DISS =
( V MAX ) 2
R
=
( 50 V ) 2
30 k ?
= 83 . 3 mW
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5491SB03200 | 制造商:Maxim Integrated Products 功能描述:PRECISION-MATCHED RESISTOR-DIVIDER - Cut Tape Product |
| MAX5491SB03200+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 30KOHM 3PIN SOT-23 - Cut Tape Product |
| MAX5491SB03200+T | 功能描述:电阻器网络与阵列 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 |
| MAX5491SB03200-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 |
| MAX5491SC03200 | 制造商:Maxim Integrated Products 功能描述:PRECISION-MATCHED RESISTOR-DIVIDER - Rail/Tube |
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