MAX1179CCUI+

Analog To Digital Converters (ADC) Overview

The MAX1179CCUI+ is a 16-bit successive-approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It features a single +4.75V to +5.25V analog supply and interfaces with digital logic ranging from +2.7V to +5.25V. The device supports a sampling rate of 135ksps and accepts a bipolar analog input voltage range of ±5V. It includes an internal clock, automatic power-down capabilities, and a 16-bit wide parallel interface. The component is housed in a 28-pin TSSOP package and operates within a commercial temperature range of 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Supports selectable standby or shutdown modes for optimized power consumption between conversions
• Integrates a factory-trimmed internal clock to simplify microprocessor interfacing
• Features a 16-bit wide parallel interface with three-state outputs for direct connection to microcontrollers

Analog To Digital Converters (ADC) Applications

• Temperature Sensing and Monitoring
• Industrial Process Control
• Data-Acquisition Systems
• Precision Instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature range (0°C to +70°C) rather than the extended range ('E'). Confirm the part status as discontinued or obsolete through official manufacturer channels before finalizing procurement plans. Ensure compatibility with existing board layouts regarding the 28-pin TSSOP footprint.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution and ±5V bipolar input range are required. Compare against MAX1187 (0 to +10V unipolar) and MAX1189 (±10V bipolar) if different input ranges suit the application better. Consider the 135ksps sampling rate and low-power shutdown mode for battery-operated systems requiring high accuracy.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX1179/MAX1187/MAX1189 family of 16-bit, low-power SAR ADCs. These devices share identical architectures and pinouts but differ in analog input voltage ranges and temperature specifications. The MAX1179 specifically targets applications requiring a ±5V input range within the commercial temperature grade.

Analog To Digital Converters (ADC) Replacement Considerations

MAX1179ACUI+

Analog To Digital Converters (ADC) FAQ

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

Holding the R/C pin low during the second falling edge of CS places the device in standby mode, keeping the reference active. Setting R/C high during that same edge initiates shutdown mode, powering down the reference and buffer to minimize current.

What is the wake-up time for the internal reference after shutdown?

When waking up from shutdown mode, the internal reference requires a minimum of 12ms to settle before starting a new conversion, assuming standard bypass capacitor values of 10µF on REF and 0.1µF on REFADJ.

How is the analog input current managed during transitions?

In shutdown mode, the input current is minimal. Upon transitioning to acquisition mode, the input current steps to its operating value. Driving circuits must be capable of settling within the acquisition time to maintain accuracy.