Analog Devices MAX22707AUB+, 4th-order zero-crossing detector, band-pass/low-pass filter, 336 Hz cutoff, 3V-5.5V supply, surface-mount 10-uMAX/uSOP, tube.
| Parameter | Value |
|---|---|
| Filter type | Band Pass, Low Pass |
| Mounting | Surface Mount |
| Voltage | 3V ~ 5.5V |
| Frequency - cutoff or center | 336Hz |
| Package | Tube |
| Filter order | 4th |
| Case | 10-TFSOP, 10-MSOP (0.118\", 3.00mm Width) |
| Number of filters | 1 |
The 336 Hz cutoff frequency targets low-frequency signal chains.
A 4th-order filter gives steep roll-off — enough to reject harmonics above the passband without needing a multi-stage discrete design. The band-pass and low-pass modes let you configure it either as a tuned band-select filter or a low-pass anti-aliasing stage ahead of an ADC.
The MAX22707AUB+ comes in a 10-pin uMAX/uSOP package. The pinout is defined in the datasheet; key pins include supply, ground, filter input, and zero-crossing output.
As a complete 4th-order filter and zero-crossing detector, the MAX22707AUB+ integrates the filter network on-chip. External components are limited to supply decoupling and possibly input coupling capacitors depending on the signal source — refer to the datasheet for the recommended application circuit.
Typical applications include zero-crossing detection for AC power control (phase-angle firing, TRIAC triggering), low-frequency signal conditioning for tachometers or vibration sensors, and anti-aliasing filtering ahead of a slow ADC.