8th-Order, Lowpass, Elliptic, Switched-Capacitor Filters The MAX294CPA is a switched-capacitor, 8th-order, lowpass filter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Filter Type:** Switched-Capacitor, Lowpass
- **Order:** 8th-order
- **Cutoff Frequency Range:** 0.1Hz to 25kHz
- **Clock-to-Cutoff 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
- **Power Consumption:** 20mW (typical)
- **Stopband Attenuation:** -80dB (typical)
- **Passband Ripple:** ±0.5dB (typical)
### **Descriptions:**
The MAX294CPA is a precision, 8th-order, lowpass elliptic filter that uses switched-capacitor technology for accurate frequency response. It is clock-tunable, allowing the cutoff frequency to be adjusted via an external clock signal. The device operates with a single +5V supply or dual ±5V supplies and is commonly used in anti-aliasing, noise reduction, and signal conditioning applications.
### **Features:**
- **8th-Order Elliptic Lowpass Response** – Provides sharp roll-off and high stopband attenuation.
- **Clock-Tunable Cutoff Frequency** – Adjustable via an external clock (100:1 clock-to-cutoff ratio).
- **Single or Dual Supply Operation** – Supports ±5V or +5V operation.
- **Low Power Consumption** – Typically 20mW.
- **No External Components Required** – Internal clock oscillator simplifies design.
- **High Stopband Rejection** – Typically -80dB.
- **Low Passband Ripple** – ±0.5dB typical.
- **Standard 8-Pin PDIP Package** – Easy to integrate into designs.
This information is based solely on the manufacturer's datasheet and technical documentation.
