MAX7422EUA+

The MAX7422EUA+ is a 5th order low pass, switched capacitor filter in 8 pin µMAX package. This is an elliptic low pass filter provides sharp roll-off with good stop band rejection. It operates with a 100:1 clock to corner frequency ratio. Two clocking options are available on this device, self-clocking (through the use of an external capacitor) or external clocking for tighter corner-frequency control. An offset adjust pin allows for adjustment of the DC output level. It uses an alternative approach which is to emulate a passive network using switched-capacitor integrators with summing and scaling. It is used in DAC post filtering, air-bag electronics and CT2 base stations.

• Supply voltage range is 2.7V to 3.6V
• Operating temperature range from -40°C to 85°C
• Typical corner frequency range from 100:1 to 45KHz at VIN = 2.5Vp-p
• Clock to corner tempco of 10ppm/°C, typical internal oscillator frequency is 87KHz
• Typical supply current is 2.6mA (operating mode, no load)
• Typical shutdown current is 0.2µA

Applications

Signal Processing, Audio

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party