MAX11047ECB+

Analog To Digital Converters (ADC) Overview

The MAX11047ECB+ is a 16-bit, 4-channel simultaneous-sampling analog-to-digital converter (ADC) from Analog Devices/Maxim Integrated. It features independent track-and-hold and SAR circuitry for each channel, enabling true simultaneous sampling at 250ksps per channel. The device accepts 0 to +5V input signals and includes internal ±20mA input clamps for overrange protection. It operates with a 4.75V to 5.25V analog supply and a flexible 2.7V to 5.25V digital supply, eliminating the need for level shifters. Key electrical parameters include a 3µs conversion time, 10ns aperture delay, and an internal 4.096V reference providing a 0 to +5V input range.

Analog To Digital Converters (ADC) Feature Summary

• Four independent channels with simultaneous sampling capability at 250ksps per channel
• 16-bit resolution with high-impedance inputs up to 1GΩ and internal ±20mA input clamps
• Internal clocked conversions with a fast 3µs conversion time and 10ns aperture delay
• Integrated low-drift 4.096V internal reference or support for external references between 3.0V and 4.25V

Analog To Digital Converters (ADC) Applications

• Automatic Test Equipment
• Power-Factor Monitoring and Correction
• Multiphase Motor Control
• Vibration and Waveform Analysis

Analog To Digital Converters (ADC) Procurement Notes

Verify the package type matches the required PCB footprint, as this model uses a 64-pin TQFP-EP. Confirm that the analog supply voltage remains within the 4.75V to 5.25V range and the digital supply stays between 2.7V and 5.25V during operation. Ensure proper decoupling capacitors are placed near AVDD and DVDD pins to maintain signal integrity and stability.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX11047ECB+ when four channels of simultaneous sampling are required at 16-bit resolution. Consider the MAX11048ECB+ or MAX11049ECB+ if six or eight channels are needed, respectively. Verify that the host system can interface with the bidirectional parallel data bus and that the 250ksps throughput rate meets the application's data acquisition requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX11047–MAX11049/MAX11057–MAX11059 family of simultaneous-sampling ADCs. The MAX11047 variant specifically provides four channels with 16-bit resolution. Other family members offer different channel counts or 14-bit resolution variants like the MAX11057 series. All devices in this family share similar architectural features, including independent track-and-hold circuits and parallel interfaces.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same package include the MAX11048ECB+ (6-channel) and MAX11049ECB+ (8-channel). For applications requiring fewer channels, the MAX11057ECB+ offers 14-bit resolution with four channels. Ensure that the replacement part supports the required 250ksps sampling rate and compatible supply voltages.