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Product Detailed Parameters
- Description：IC FILTER 25KHZ LOWPASS 8SOIC
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR)
- Filter Type：Bessel, Low Pass Switched Capacitor
- Frequency - Cutoff or Center：25kHz
- Number of Filters：1
- Filter Order：8th
- Voltage - Supply：4.75V ~ 11V, ±2.375V ~ 5.5V
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The MAX292ESA+T is an 8th-order lowpass Bessel switched-capacitor filter in an 8-pin SO package. It provides a maximally flat passband with low overshoot and fast settling, suitable for applications requiring linear phase response. The corner frequency is tunable from 0.1Hz to 25kHz using a clock-to-corner-frequency ratio of 100:1. It operates on a single +4.75V to +11V supply or dual ±2.375V to ±5.5V supplies. An uncommitted op amp supports anti-aliasing or clock-noise filtering.
Feature Summary
- Bessel filter response providing low overshoot and fast settling times
- Clock-tunable corner frequency range from 0.1Hz to 25kHz
- Integrated uncommitted operational amplifier for post-filtering
Applications
- ADC Anti-Aliasing Filter
- DAC Post-Filtering
- Noise Analysis
- 50Hz/60Hz Line-Noise Filtering
Procurement Notes
Verify the specific suffix 'ESA' confirms the -40°C to +85°C industrial temperature range and 8-SOIC package. Confirm RoHS compliance via the '+' designation. Check current availability status as distribution may vary by region.
Selection Notes
Select this component when a Bessel response is required for minimal signal distortion during step transitions. Ensure the external clock frequency allows for the desired 100:1 tuning ratio relative to the target cutoff frequency.
Part Context
Part of the MAX291/MAX292/MAX295/MAX296 family of 8th-order lowpass switched-capacitor filters. The MAX292 specifically implements the Bessel characteristic, whereas the MAX291 provides a Butterworth response within the same series.
Replacement Considerations
MAX291ESA+T (Butterworth response)
FAQ
What is the maximum recommended clock frequency?
The maximum recommended clock frequency is 2.5MHz.
How is the internal oscillator frequency determined?
The capacitance connected from the CLK pin to ground determines the internal oscillator frequency.
Can the device operate with asymmetric clocks?
Yes, it can operate with clock asymmetry up to 60/40% provided the high and low states remain above 200ns.
