ADC1251CIJ

Analog To Digital Converters (ADC) Overview

The ADC1251CIJ is a CMOS 12-bit plus sign successive approximation analog-to-digital converter manufactured by Texas Instruments (originally National Semiconductor). It features an internal sample-and-hold circuit and supports self-calibration to correct zero, full-scale, and linearity errors. The device operates with ±5V supplies, accommodating unipolar (0 to +5V) or bipolar (±5V) input ranges. It utilizes an 8-bit microprocessor/DSP interface for data transfer. Key electrical specifications include a maximum conversion time of 8 ms, a sampling rate up to 83 kHz, and power consumption of 113 mW at ±5V. The component is housed in a 24-pin Dual-In-Line package.

Analog To Digital Converters (ADC) Feature Summary

• Self-calibration capability for improved temperature stability
• Internal sample-and-hold eliminates external components
• Bipolar input range with single ±5V reference
• TTL/MOS compatible digital inputs and outputs

Analog To Digital Converters (ADC) Applications

• Digital signal processing systems
• High resolution process control
• Precision instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the manufacturer origin, as the datasheet indicates National Semiconductor Corporation copyright. Confirm the industrial temperature range (-40°C to +85°C) matches the CIJ suffix. Check for RoHS compliance status relative to current manufacturing standards. Ensure supply voltage requirements align with system design constraints.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution with sign extension is required. Consider the internal sample-and-hold feature if external holding circuits are undesirable. Verify that the 8-bit parallel interface fits the target microcontroller architecture. Ensure the ±5V supply rails are available in the application environment.

Analog To Digital Converters (ADC) Part Context

The ADC1251CIJ belongs to the ADC1251 series of self-calibrating A/D converters. The 'CIJ' suffix denotes the Industrial temperature grade (-40°C to +85°C) and the 24-pin Dual-In-Line package. Other variants include the Military grade CMJ and the BIJ industrial variant.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult manufacturer documentation for legacy replacement options.