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

8th-Order, Lowpass, Switched-Capacitor Filters The MAX291ESA+ is a low-pass filter manufactured by Maxim Integrated. Below are the factual details from Ic-phoenix technical data files:

### **Manufacturer:**  
- **MAX** (Maxim Integrated)  

### **Specifications:**  
- **Type:** 8th-order, low-pass, switched-capacitor filter  
- **Cutoff Frequency Range:** Adjustable from 0.1Hz to 25kHz  
- **Clock-to-Cutoff Frequency 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 (Small Outline Integrated Circuit)  
- **Pin Count:** 8  

### **Descriptions:**  
- The MAX291ESA+ provides an 8th-order Butterworth low-pass filter response.  
- It is designed for anti-aliasing, noise reduction, and signal conditioning applications.  
- The filter's cutoff frequency is set by an external clock signal.  

### **Features:**  
- **Low-Pass Filtering:** 8th-order Butterworth response for smooth roll-off.  
- **Switched-Capacitor Design:** Allows precise cutoff frequency control via an external clock.  
- **Wide Supply Range:** Supports both dual and single-supply operation.  
- **Low Power Consumption:** Typically 10mA at ±5V supply.  
- **No External Components Required:** Internal clock oscillator can be used if needed.  

This information is strictly based on the manufacturer's specifications for the MAX291ESA+.

8th-Order, Lowpass, Switched-Capacitor Filters