8th-Order, Lowpass, Switched-Capacitor Filters The MAX291CPA is a low-pass filter manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual details about the device:
### **Specifications:**
- **Manufacturer:** Maxim Integrated (now Analog Devices)
- **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 (typical)
- **Supply Voltage Range:** ±5V (dual supply) or +5V (single supply)
- **Operating Temperature Range:** 0°C to +70°C
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)
- **Pin Count:** 8
- **Output Drive Capability:** ±5mA
- **THD (Total Harmonic Distortion):** 0.8% (typical)
- **Stopband Attenuation:** -80dB (typical)
### **Descriptions:**
The MAX291CPA is an 8th-order, low-pass, switched-capacitor filter that provides Butterworth response characteristics. It is designed for anti-aliasing and signal reconstruction applications. The cutoff frequency is set by an external clock signal, making it highly flexible for different frequency requirements.
### **Features:**
- **8th-Order Low-Pass Filter** – Provides sharp roll-off for effective signal conditioning.
- **Butterworth Response** – Maximally flat passband with no ripple.
- **Clock-Tunable Cutoff Frequency** – Adjustable via an external clock (100:1 ratio).
- **Single or Dual Supply Operation** – Supports ±5V or +5V operation.
- **Low Power Consumption** – Typically 20mA supply current.
- **No External Components Required** – Internal clock oscillator simplifies design.
- **Pin-Compatible with MF10** – Allows for easy replacement in existing designs.
This information is based solely on the manufacturer's datasheet and specifications.
