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参数资料
| 型号： | MAX492 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual, Micropower, Single-Supply Rail-to-Rail Op Amps(输入失调电压500μV,单电源满量程运放) |
| 中文描述： | 单/双/四路、微功耗、单电源、满摆幅运算放大器 |
| 文件页数： | 14/16页 |
| 文件大小： | 224K |
| 代理商： | MAX492 |
M
Power S upplies and Layout
The MAX492/MAX494/MAX495 operate from a single
2.7V to 6V power supply, or from dual supplies of
±1.35V to ±3V. For single-supply operation, bypass the
power supply with a 1μF capacitor in parallel with a
0.1μF ceramic capacitor. If operating from dual sup-
plies, bypass each supply to ground.
Good layout improves performance by decreasing the
amount of stray capacitance at the op amp’s inputs
and output. To decrease stray capacitance, minimize
both trace lengths and resistor leads and place exter-
nal components close to the op amp’s pins.
Rail-to-Rail Buffers
The Typical Operating Circuitshows a MAX495 gain-of-
two buffer driving the analog input to a MAX187 12-bit
ADC. Both devices run from a single 5V supply, and
the converter’s internal reference is 4.096V. The
MAX495’s typical input offset voltage is 200μV. This
results in an error at the ADC input of 400μV, or less
than half of one least significant bit (LSB). Without offset
trimming, the op amp contributes negligible error to the
conversion result.
S ingle/Dual/Quad, Mic ropower,
S ingle-S upply Rail-to-Rail Op Amps
14
______________________________________________________________________________________
V
1V/div
V
500mV/div
5
μ
s/div
V
2V/div
V
1V/div
5
μ
s/div
Figure 10b. Power-Up Settling Time (V
CC
= +5V)
Figure 10a. Power-Up Settling Time (V
CC
= +3V)
相关PDF资料 |
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|---|---|
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4920BETD+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4920BETD+T | 功能描述:电池管理 Battery Power-Up Logic RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX4921BETD+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4921BETD+T | 功能描述:电池管理 Battery Power-Up Logic RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX4924ELT+T | 功能描述:开关变换器、稳压器与控制器 Overvoltage Protector RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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