MAX1187ACUI+

Analog To Digital Converters (ADC) Overview

The MAX1187ACUI+ is a 16-bit successive-approximation analog-to-digital converter (ADC) featuring a single-ended input voltage range of 0V to +10V. It operates from a single +4.75V to +5.25V analog supply and interfaces with digital logic ranging from +2.7V to +5.25V. The device provides a 16-bit wide parallel interface and includes an internal +4.096V reference or supports external references. Key performance metrics include a maximum sampling rate of 135ksps, ±2LSB integral nonlinearity (INL), and ±1LSB differential nonlinearity (DNL). Power consumption is 23mW at 135ksps with an external reference and 29mW with the internal reference.

Analog To Digital Converters (ADC) Feature Summary

• Integrated input scaler enables direct conversion of unipolar signals up to +10V while operating from a single +5V supply.
• Factory-trimmed internal clock eliminates the need for external timing components.
• Selectable power-down modes allow optimization between low standby current and rapid wake-up times.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Precision instrumentation
• Data-acquisition modules

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and check for End-of-Life notices, as this specific part number may be discontinued. Ensure ordering suffixes match required temperature ranges and packaging specifications.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX1187ACUI+ when a single-ended input range of 0V to +10V is required. Choose the MAX1179ACUI+ for bipolar ±5V inputs or the MAX1189ACUI+ for bipolar ±10V inputs. Verify that the parallel interface and 16-bit resolution meet system accuracy requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX1179/MAX1187/MAX1189 family of 16-bit, 135ksps ADCs. All variants share identical architecture, pinouts, and electrical characteristics, differing only in their specified analog input voltage ranges. The ACUI+ suffix indicates a commercial temperature range (0°C to +70°C) and lead-free TSSOP-28 packaging.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional substitutes within the same package and specification are the MAX1179ACUI+ and MAX1189ACUI+. These parts are electrically identical except for the analog input voltage range. Verify that the replacement matches the required input polarity and span for the application.

Analog To Digital Converters (ADC) FAQ

How does the R/C pin control power-down modes?

During the second falling edge of the CS signal, holding R/C low places the device in standby mode, keeping the reference active. Setting R/C high enters shutdown mode, powering down the reference and buffer to minimize current consumption.

What is the wake-up time after entering shutdown mode?

When exiting shutdown mode, the internal reference requires a minimum of 12ms to power up and settle before accurate conversions can begin.

Can the MAX1187ACUI+ accept bipolar input voltages?

No, the MAX1187 variant is specifically designed for a unipolar input range of 0V to +10V. For bipolar inputs, use the MAX1179 (±5V) or MAX1189 (±10V).