MAX262ACWG+T

Overview

The MAX262ACWG+T is a CMOS dual second-order universal switched-capacitor active filter in a 24-pin Wide SO package. It supports center frequencies up to 140kHz using lower clock-to-f0 ratios compared to the MAX260/MAX261. The device features microprocessor control for precise tuning of center frequency and Q factor without external components. It operates on single +5V or ±5V supplies, with an operating temperature range of 0°C to +70°C. The A grade guarantees a clock-to-f0 ratio accuracy of 1%.

Feature Summary

• Microprocessor programmable interface for independent control of center frequency and Q factor
• Dual second-order sections supporting bandpass, lowpass, highpass, notch, and allpass configurations
• Integrated oscillator options compatible with crystal, RC network, or external clock generator

Applications

• Microprocessor-tuned filters
• Anti-aliasing filters
• Digital signal processing systems
• Adaptive filters
• Phase-locked loops

Procurement Notes

Verify the ordering suffix 'WG' corresponds to the Wide SO package and '+T' indicates tape-and-reel packaging. Confirm the 'A' grade designation ensures the specified 1% clock-to-f0 ratio accuracy. Ensure the component meets RoHS compliance standards as indicated by the '+' suffix.

Selection Notes

Select the MAX262 over the MAX260 or MAX261 when higher center frequencies up to 140kHz are required. The MAX262 utilizes lower sampling ratios, which may result in greater deviation from ideal continuous filter parameters compared to the other variants. Use Maxim's filter design software to compensate for these deviations during system design.

Part Context

This component belongs to the MAX260/MAX261/MAX262 family of microprocessor-programmable universal active filters. While the MAX260 offers superior DC specifications and the MAX261 handles frequencies up to 57kHz, the MAX262 extends the operational range to 140kHz. All devices share similar pinouts and programming interfaces but differ in internal clock-to-frequency ratios.

Replacement Considerations

Direct functional replacements within the same family include the MAX260ACWG+T and MAX261ACWG+T. Note that the MAX260 has a lower maximum center frequency (7.5kHz) and better DC offset performance, while the MAX261 supports frequencies up to 57kHz. Substitution requires verifying if the specific frequency range and Q accuracy meet the application requirements.