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MAX991ESA from MAXIM,MAXIM - Dallas Semiconductor

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MAX991ESA

Manufacturer: MAXIM, MAX

High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators

Partnumber Manufacturer Quantity Availability
MAX991ESA MAXIM, MAX 173 In Stock

Description and Introduction

High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators The MAX991ESA is a precision, high-side current-sense amplifier manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual data from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX991ESA  
- **Package:** 8-SOIC  
- **Supply Voltage Range:** +2.7V to +28V  
- **Input Common-Mode Voltage Range:** -0.1V to +28V  
- **Gain Bandwidth Product:** 500kHz (typical)  
- **Gain Error:** ±0.5% (max)  
- **Quiescent Current:** 100µA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Output Voltage Swing:** Rail-to-Rail  
- **Common-Mode Rejection Ratio (CMRR):** 90dB (min)  

### **Description:**  
The MAX991ESA is a high-side current-sense amplifier designed for precision measurement of current in applications such as battery monitoring, power management, and motor control. It operates with a wide input common-mode voltage range and provides a rail-to-rail output swing.  

### **Features:**  
- Wide supply voltage range (+2.7V to +28V)  
- High common-mode input range (-0.1V to +28V)  
- Low quiescent current (100µA typical)  
- Rail-to-rail output swing  
- High CMRR (90dB min)  
- Low gain error (±0.5% max)  
- Small 8-SOIC package  
- Suitable for high-side current sensing  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators

Alternative Part Number

  • LM393M --: Dual comparator with similar open-collector output and supply range; widely available and pin-compatible in many designs.
  • LM2903M --: Dual differential comparator covering a wide supply range, a common drop-in substitute for MAX991 in comparator applications.
  • TLV3201 --: Low-power comparator with rail-to-rail input, suitable functional replacement when lower power and modern performance are acceptable.
  • LT1017CS8 --: Comparable single micropower comparator with similar supply range and open-drain output, pin-compatible in many SO-8 designs.
  • TLV3011IDBVR --: Low-power comparator with integrated reference, suitable functional replacement for battery-powered sensing applications.
  • LMV7219M5 --: Fast low-voltage comparator offering similar response time and supply flexibility, usable in SOT-23 or SO-8 adapter layouts.
  • TLV3402ID --: Low-power dual comparator with rail-to-rail inputs, suitable replacement when lower power consumption is desired.

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