8th-Order, Lowpass, Switched-Capacitor Filters The MAX291EWE is a low-pass filter manufactured by Maxim Integrated. Here are its key specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **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:** ±5V (dual supply)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin Wide SOIC (WE)  

### **Descriptions:**  
- The MAX291EWE is a monolithic, 8th-order elliptic low-pass filter with a fixed 100:1 clock-to-cutoff frequency ratio.  
- It is designed for precision signal conditioning in applications requiring steep roll-off and minimal passband ripple.  
- The device operates with a single external clock to set the cutoff frequency.  

### **Features:**  
- **8th-Order Elliptic Response:** Provides sharp roll-off characteristics.  
- **No External Components Required:** Only a clock signal is needed.  
- **Low Noise and Distortion:** Suitable for high-performance filtering.  
- **Wide Adjustable Frequency Range:** Supports cutoff frequencies from 0.1Hz to 25kHz.  
- **Single or Dual Supply Operation:** Compatible with ±5V or +5V supplies.  
- **Low Power Consumption:** Ideal for battery-powered applications.  

This information is based solely on the manufacturer's datasheet for the MAX291EWE.

8th-Order, Lowpass, Switched-Capacitor Filters

8th-Order, Lowpass, Switched-Capacitor Filters The **MAX291EWE** is a **8th-order, lowpass, elliptic, switched-capacitor filter** manufactured by **Maxim Integrated (now part of Analog Devices)**.  

### **Key Specifications:**  
- **Filter Type:** 8th-order lowpass elliptic  
- **Clock-to-Cutoff Frequency Ratio:** 50:1 (fixed)  
- **Cutoff Frequency Range:** Up to **25 kHz**  
- **Stopband Attenuation:** **-80dB min**  
- **Passband Ripple:** **±0.1dB max**  
- **Supply Voltage Range:** **±5V (dual supply)**  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **Package:** **16-pin Wide SOIC (SO-16)**  

### **Features:**  
- **No External Components Required** (except clock source)  
- **Low Power Consumption:** **10mA (typical)**  
- **Pin-Selectable Clock Modes:**  
  - **Self-Clocking (Internal Oscillator)**  
  - **External Clocking**  
- **Elliptic Response for Sharp Rolloff**  
- **Single or Dual Supply Operation**  

### **Applications:**  
- Anti-aliasing filters  
- Data acquisition systems  
- Audio processing  
- Communications systems  

This IC is designed for precision filtering with minimal external components.

8th-Order, Lowpass, Switched-Capacitor Filters