ADC1283IPT

Analog To Digital Converters (ADC) Overview

The ADC1283IPT is a low-power, eight-channel pure CMOS 12-bit analog-to-digital converter manufactured by STMicroelectronics. It operates at conversion rates from 50 ksps to 200 ksps and utilizes a successive-approximation register architecture with an internal track-and-hold cell. The device features eight single-ended multiplexed inputs and outputs straight binary data compatible with the SPI interface. It supports independent analog and digital power supplies ranging from 2.7 V to 5.5 V. Typical power consumption is 3.2 mW at a 5 V supply. The component is housed in a plastic TSSOP-16 package and functions within an ambient temperature range of -40 °C to +125 °C.

Analog To Digital Converters (ADC) Feature Summary

• Eight single-ended multiplexed analog inputs for versatile signal acquisition
• Low power consumption with dedicated shutdown mode capabilities
• SPI-compatible serial digital interface for straightforward microcontroller integration

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Shunt resistor monitoring circuits
• Data acquisition and instrumentation equipment
• Test and measurement devices
• Strain gauge sensing applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering code matches the required package and temperature grade. Confirm that the application environment stays within the specified voltage and thermal limits. Ensure proper decoupling capacitors are placed near the AVCC and DVCC pins to maintain signal integrity and stable operation during high-speed conversions.

Analog To Digital Converters (ADC) Selection Notes

Select this component when multiple single-ended signals require digitization with moderate speed requirements. The integrated multiplexer reduces external switching complexity compared to single-channel alternatives. Verify that the input signal range aligns with the available supply voltage, as the device uses AVCC as the reference.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC128x family of 12-bit SAR ADCs. Related variants include the ADC1281 and ADC1282, which offer different channel counts or pin configurations while maintaining similar performance characteristics. These components share the same core architecture and interface protocols for consistent design scalability.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitutes include the ADC1281 and ADC1282. Verify pin compatibility and channel count differences before substitution. Ensure the replacement part meets the specific voltage and temperature requirements of the existing design.

Analog To Digital Converters (ADC) FAQ

How does the ADC1283 handle analog input voltages?

The analog inputs are single-ended and referenced from AGND to AVCC. The device uses AVCC as its internal reference voltage, meaning the input dynamic range is determined by the analog supply voltage.

What is the default behavior if no channel address is written?

If no value is written to the control register or if an invalid address is entered, the device defaults to converting channel IN0. The address register resets to this default state when the CS signal goes high.

How many clock cycles are required for a full conversion?

A full conversion requires 16 clock cycles. This includes 3 cycles for the sampling phase and 13 cycles for the evaluation phase, after which the 12-bit result is available on the DOUT pin.