8th-Order, Lowpass, Switched-Capacitor Filters The MAX291CWE is a switched-capacitor, lowpass filter manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Part Number:** MAX291CWE
- **Package:** 16-pin Wide SOIC (SOIC-16)
- **Filter Type:** 8th-order, lowpass, Butterworth response
- **Cutoff Frequency Range:** Adjustable from 0.1Hz to 25kHz
- **Clock-to-Cutoff Frequency Ratio:** 100:1 (fixed)
- **Supply Voltage Range:** ±2.375V to ±8V (dual supply) or +4.75V to +16V (single supply)
- **Operating Temperature Range:** 0°C to +70°C (commercial grade)
- **Typical Power Consumption:** 4.5mA (±5V supply)
- **Signal-to-Noise Ratio (SNR):** 80dB (typical)
- **Total Harmonic Distortion (THD):** -72dB (typical at 1kHz)
### **Descriptions:**
- The MAX291CWE is an 8th-order, lowpass filter with a Butterworth response, providing a maximally flat passband.
- It uses a switched-capacitor architecture, allowing precise cutoff frequency tuning via an external clock.
- The device operates with single or dual power supplies, making it versatile for various applications.
- It includes an internal clock oscillator (optional) or accepts an external clock for frequency control.
### **Features:**
- **8th-Order Lowpass Filter:** Provides sharp roll-off and flat passband response.
- **Butterworth Response:** Ensures no passband ripple.
- **Adjustable Cutoff Frequency:** Set by an external clock (100:1 clock-to-cutoff ratio).
- **Wide Supply Range:** Supports ±2.375V to ±8V (dual) or +4.75V to +16V (single).
- **Low Power Consumption:** Typically 4.5mA at ±5V.
- **No External Components Required:** Internal clock oscillator simplifies design.
- **High SNR and Low THD:** Suitable for precision signal conditioning.
This information is strictly based on the manufacturer's datasheet and technical documentation.
