Key facts
- Brand
- Maxim
- Model
- MAX7427
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-05
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Maxim MAX7426/MAX7427 Switched‑Capacitor Filter Datasheet
The MAX7426/MAX7427 family provides 5th‑order elliptic low‑pass filtering for applications such as anti‑aliasing and post‑DAC filtering. They operate from a single +5 V (MAX7426) or +3 V (MAX7427) supply and draw only 0.8 mA in normal mode, dropping to 0.2 µA in shutdown.
Key features include a corner‑frequency range of 1 Hz to 12 kHz, a 100:1 clock‑to‑corner ratio, low output offset of +4 mV, 37 dB stopband rejection, and a transition ratio of 1.25. The devices are offered in 8‑pin UMAX/PDIP packages and support both self‑clocking and external clocking for precise frequency control.
Maxim MAX7427 specifications
| Supply Voltage | +5 V (MAX7426) / +3 V (MAX7427) |
|---|---|
| Operating Mode Supply Current | 0.8 mA |
| Shutdown Current | 0.2 µA |
| Stopband Rejection | 37 dB |
| Transition Ratio | 1.25 |
| Corner‑Frequency Range | 1 Hz to 12 kHz |
| Clock‑to‑Corner Ratio | 100:1 |
| Power‑Supply Rejection Ratio (PSRR) | 70 dB |
Source: Maxim MAX7426/MAX7427 Switched‑Capacitor Filter Datasheet
All Maxim MAX7427 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What supply voltage does the MAX7426 require?
The MAX7426 operates from a single +5 V supply.
From: Maxim MAX7426/MAX7427 Switched‑Capacitor Filter Datasheet
What is the shutdown current of the MAX7427?
The MAX7427 draws 0.2 µA in shutdown mode.
From: Maxim MAX7426/MAX7427 Switched‑Capacitor Filter Datasheet
How low can the shutdown current go for these filters?
In shutdown mode the supply current drops to 0.2 µA.
From: Maxim MAX7426/MAX7427 5th-Order Lowpass Elliptic Switched-Capacitor Filters Datasheet
What is the stopband rejection of the MAX7426/MAX7427 filters?
Both devices provide about 37 dB of stopband rejection.
From: Maxim MAX7426/MAX7427 5th-Order Lowpass Elliptic Switched-Capacitor Filters Datasheet