MAX291ESA+

8th-Order, Lowpass, Switched-Capacitor Filters The **MAX291ESA+** is a **8th-order, lowpass, elliptic, switched-capacitor filter** manufactured by **Maxim Integrated**.  

### **Specifications:**  
- **Filter Type:** Lowpass  
- **Filter Order:** 8th-order  
- **Response Type:** Elliptic  
- **Architecture:** Switched-capacitor  
- **Cutoff Frequency Range:** Adjustable (0.1Hz to 25kHz)  
- **Clock-to-Cutoff Ratio:** 100:1 (fixed)  
- **Supply Voltage Range:** ±2.375V to ±5.5V (dual supply) or +4.75V to +11V (single supply)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (MAX291ESA+)  
- **Pin Count:** 8  
- **Stopband Attenuation:** -80dB (typical)  
- **Passband Ripple:** ±0.1dB (typical)  

### **Descriptions:**  
- The MAX291ESA+ is a **monolithic, 8th-order, lowpass, elliptic filter** with a **switched-capacitor architecture**.  
- It provides **sharp roll-off** and **high stopband rejection**.  
- The cutoff frequency is **externally adjustable** via an external clock.  
- It operates with **single or dual power supplies**, making it versatile for various applications.  

### **Features:**  
- **8th-order elliptic lowpass response**  
- **No external components required** (except clock & power supply)  
- **100:1 clock-to-cutoff ratio** (fixed)  
- **Low noise and distortion**  
- **Single or dual power supply operation**  
- **Wide operating temperature range** (-40°C to +85°C)  
- **Available in 8-pin SOIC package**  

This filter is commonly used in **anti-aliasing, data acquisition, and signal conditioning** applications.

8th-Order, Lowpass, Switched-Capacitor Filters