MAX7422：5th-Order, Lowpass, Switched-Capacitor Filters
The MAX7418–MAX7425 5th-order, low-pass, switched-capacitor filters (SCFs) operate from a single +5V (MAX7418–MAX7421) or +3V (MAX7422–MAX7425) supply. These devices draw only 3mA of supply current and allow corner frequencies from 1Hz to 45kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode that reduces supply current to 0.2µA. Two clocking options are available: 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. The MAX7418/MAX7422 deliver 53dB of stopband rejection and a sharp rolloff with a 1.6 transition ratio. The MAX7421/MAX7425 achieve a sharper rolloff with a 1.25 transition ratio while still providing 37dB of stopband rejection. The MAX7419/MAX7423 Bessel filters provide low overshoot and fast settling, and the MAX7420/MAX7424 Butterworth filters provide a maximally flat passband response. Their fixed response simplifies the design task of selecting a clock frequency.
Key Features
| MAX7418, MAX7419, MAX7420, MAX7421, MAX7422, MAX7423, MAX7424, MAX7425: Typical Operating Circuit Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| MAX7418-MAX7425 Data Sheet | MAX7418-MAX7425.pdf |
Parametrics
| Part Number | Filter Sections | Order Per Filter Section | Filter Class | Filter Type | Filter Characteristic | Program Method | Lowest Cutoff (Hz) | Highest Cutoff (kHz) | VSUPPLY (V) | Design Tools | Oper. Temp. (°C) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| max | min | See Notes | |||||||||||
| MAX7418 | 1 | 5 | Switched Cap | Lowpass | Elliptic | Clock | 1 | 30 | 5 | EE-Sim | -40 to +85 0 to +70 | µMAX/8 | $3.66 @1k |
| MAX7419 | Bessel | 30 | 5 | µMAX/8 | $2.92 @1k | ||||||||
| MAX7420 | Butterworth | 30 | 5 | µMAX/8 | $3.69 @1k | ||||||||
| MAX7421 | Elliptic | 30 | 5 | µMAX/8 | $2.78 @1k | ||||||||
| MAX7422 | Elliptic | 45 | 3 | µMAX/8 | $2.92 @1k | ||||||||
| MAX7423 | Bessel | 45 | 3 | µMAX/8 | $2.92 @1k | ||||||||
| MAX7424 | Butterworth | 45 | 3 | µMAX/8 | $2.92 @1k | ||||||||
| MAX7425 | Elliptic | 45 | 3 | µMAX/8 | $2.92 @1k | ||||||||
Design kits & evaluation modules
Quality and Environmental Data
Related Products
- MAX7408：5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
- MAX7411：5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
- MAX7415：5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
- MAX7412：5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
- MAX7413：5th-Order, Lowpass, Switched-Capacitor Filters
- MAX7410：5th-Order, Lowpass, Switched-Capacitor Filters
- MAX7414：5th-Order, Lowpass, Switched-Capacitor Filters
- MAX7409：5th-Order, Lowpass, Switched-Capacitor Filters
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX7422CUA | No Longer Available | MAX7422CUA+ | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | No |
| MAX7422CUA+ | Active | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | Lead Free | |
| MAX7422CUA+T | Active | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | Lead Free | |
| MAX7422CUA-T | No Longer Available | MAX7422CUA+T | µMAX,;8 pin;15.6 mm² | 0°C to +70°C | No |
| MAX7422EUA | No Longer Available | MAX7422EUA+ | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | No |
| MAX7422EUA+ | Active | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | Lead Free | |
| MAX7422EUA+T | Active | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | Lead Free | |
| MAX7422EUA-T | No Longer Available | MAX7422EUA+T | µMAX,;8 pin;15.6 mm² | -40°C to +85°C | No |
- MAX7418-MAX7425.pdf MAX7425
- MAX7422.pdf MAX7422
- MAX7418-MAX7425.pdf MAX7425
