ADS1213P Equivalent & Substitute Parts

Part Overview

The ADS1213P is a 22-bit Sigma-Delta analog-to-digital converter manufactured by Texas Instruments, designed for multi-channel data acquisition applications. It features 4 differential inputs, an integrated programmable gain amplifier (PGA), and SPI digital interface. The device operates from a single 5V supply and is housed in a 24-pin DIP package for through-hole mounting.

The ADS1213P is classified as obsolete. Equivalent and substitute parts are necessary to support ongoing system maintenance, design updates, and new production requirements where the original part is no longer available from manufacturers or distributors.

Substiute Parts

ADS1213P

Texas InstrumentsIn Stock: 3126ADS1213P Datasheet

Current PartRFQ

ADS1248IPW

Texas InstrumentsIn Stock: 3588ADS1248IPW Datasheet

MFR RecommendedRFQ

ADS1256IDBR

Texas InstrumentsIn Stock: 17231ADS1256IDBR Datasheet

MFR RecommendedRFQ

ADS1213U

Texas InstrumentsIn Stock: 5204ADS1213U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADS1213P is determined by the following critical parameters:

Resolution and Sampling Rate: The ADS1213P operates at 22-bit resolution with a 6.25 kSPS sampling rate. Substitute parts must maintain or exceed these specifications to ensure signal fidelity and data acquisition performance.

Input Configuration: The device features 4 differential inputs. Substitutes with expanded input options (4, 7, or 4, 8 configurations) remain compatible as they support the minimum required differential input count.

Data Interface and Architecture: SPI digital interface and Sigma-Delta architecture are mandatory for protocol compatibility. All substitute parts maintain these specifications.

Supply Voltage Compatibility: The ADS1213P requires 5V analog and digital supplies. Substitutes with wider supply voltage ranges (2.7V to 5.25V or mixed ranges) are compatible when operated within the 5V specification.

Package and Mounting: The original through-hole 24-DIP package is specific to the ADS1213P. Surface-mount alternatives (24-SOIC, 28-TSSOP, 28-SSOP) require PCB redesign and are suitable only for new designs or board revisions.

Product Status and Compliance: All substitute parts are either Active or Last Time Buy status with ROHS3 compliance, ensuring regulatory compliance and supply chain viability.

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole PCB Designs: The ADS1213U is the direct functional equivalent, maintaining 22-bit resolution, 6.25 kSPS sampling rate, 4 differential inputs, and identical supply voltage requirements. The ADS1213U differs only in package format (24-SOIC surface mount) and product status (Last Time Buy). This part is suitable for designs requiring minimal modification to existing through-hole layouts through adapter solutions or for new designs accepting surface-mount technology.

For Surface-Mount PCB Designs with Extended Input Requirements: The ADS1248IPW provides 24-bit resolution with expanded input flexibility (4 or 7 inputs) and wider supply voltage range (2.7V to 5.25V). The reduced sampling rate (2 kSPS) is suitable for applications not requiring the original 6.25 kSPS performance. Extended operating temperature range (-40°C to 105°C) provides additional thermal margin. Active product status ensures long-term availability.

For High-Speed Data Acquisition Applications: The ADS1256IDBR offers 24-bit resolution with the highest sampling rate (30 kSPS) among available substitutes, supporting up to 8 single-ended or 4 differential inputs. Digital supply voltage range (1.8V to 3.6V) enables integration with modern low-voltage digital systems. Active product status and ROHS3 compliance ensure regulatory compliance and supply chain continuity.

Product Status Considerations: The ADS1213P (Obsolete) and ADS1213U (Last Time Buy) have limited availability windows. The ADS1248IPW and ADS1256IDBR (both Active) are recommended for new designs and long-term production requirements.

Frequently Asked Questions (FAQ)

Q: Can the ADS1213U directly replace the ADS1213P without PCB modification?

A: The ADS1213U maintains identical electrical specifications (22-bit resolution, 6.25 kSPS, 4 differential inputs, 5V supply). However, it uses a 24-SOIC surface-mount package versus the 24-DIP through-hole package of the ADS1213P. Direct socket replacement is not possible without PCB redesign or adapter hardware.

Q: What is the key difference between the ADS1248IPW and ADS1256IDBR?

A: The ADS1248IPW operates at 2 kSPS with a 28-TSSOP package and supports 4 or 7 inputs. The ADS1256IDBR operates at 30 kSPS with a 28-SSOP package and supports 4 or 8 inputs. Selection depends on required sampling rate and input channel count for the application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The ADS1213P, ADS1213U, ADS1248IPW, and ADS1256IDBR are all ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: Can the ADS1248IPW operate at 5V supply voltage?

A: Yes. The ADS1248IPW supports analog and digital supply voltages from 2.7V to 5.25V, making it compatible with 5V system designs. However, the reduced sampling rate (2 kSPS) compared to the ADS1213P (6.25 kSPS) must be evaluated for application requirements.

Q: What is the impact of the ADS1256IDBR's digital supply voltage range (1.8V to 3.6V)?

A: The ADS1256IDBR digital supply operates independently from analog supply, enabling integration with 3.3V or lower digital logic systems. The analog supply remains at 5V. This flexibility supports mixed-voltage system designs not possible with the ADS1213P.

Q: Is the ADS1213U suitable for new production designs?

A: The ADS1213U carries Last Time Buy status, indicating limited future availability. For new designs requiring long-term production support, the ADS1248IPW or ADS1256IDBR (both Active status) are recommended.