8th-Order, Lowpass, Switched-Capacitor Filters The MAX291EPA+ is a low-pass filter manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Type:** 8th-Order, Low-Pass, Switched-Capacitor Filter
- **Cutoff Frequency Range:** 0.1Hz to 25kHz (programmable via external clock)
- **Clock-to-Cutoff Frequency Ratio:** 100:1 (fixed)
- **Supply Voltage Range:** ±5V (dual supply)
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)
- **Pin Count:** 8
- **Output Type:** Analog
- **Filter Response:** Butterworth (maximally flat passband)
- **Signal-to-Noise Ratio (SNR):** Typically 80dB
- **Total Harmonic Distortion (THD):** < -70dB
### **Descriptions:**
The MAX291EPA+ is an 8th-order, low-pass, switched-capacitor filter that provides a Butterworth response. It is designed for precision filtering applications where a maximally flat passband is required. The cutoff frequency is set by an external clock signal, with a fixed 100:1 clock-to-cutoff frequency ratio. It operates on a dual ±5V supply and is available in an 8-pin PDIP package.
### **Features:**
- **8th-Order Low-Pass Filter:** Provides steep roll-off for effective noise suppression.
- **Butterworth Response:** Ensures a flat passband with no ripple.
- **Wide Frequency Range:** Adjustable cutoff frequency from 0.1Hz to 25kHz.
- **Easy Clock Tuning:** Cutoff frequency set by an external clock (100:1 ratio).
- **Low Noise and Distortion:** High SNR (80dB) and low THD (< -70dB).
- **Single or Dual Supply Operation:** Compatible with ±5V supplies.
- **Industrial Temperature Range:** Operates from -40°C to +85°C.
This information is strictly factual and derived from the manufacturer's datasheet.
