ADS7816PC Equivalent & Substitute Parts

Part Overview

The ADS7816PC is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for single-channel data acquisition applications. It features a Successive Approximation Register (SAR) architecture with a 200 kSPS sampling rate, external reference configuration, and operates on 5V supply voltage. The device is packaged in an 8-PDIP through-hole format.

The ADS7816PC is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this ADC architecture.

Substiute Parts

ADS7816PC

Texas InstrumentsIn Stock: 1066ADS7816PC Datasheet

Current PartRFQ

ADS7816U

Texas InstrumentsIn Stock: 1602ADS7816U Datasheet

MFR RecommendedRFQ

MCP3001-I/P

Microchip TechnologyIn Stock: 1367MCP3001-I/P Datasheet

MFR RecommendedRFQ

MCP3201-BI/P

Microchip TechnologyIn Stock: 2703MCP3201-BI/P Datasheet

MFR RecommendedRFQ

MCP3201-CI/P

Microchip TechnologyIn Stock: 6202MCP3201-CI/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ADS7816PC is determined by the following critical parameters:

• Resolution: 12-bit conversion capability
• Sampling Rate: Minimum 100 kSPS (ADS7816PC operates at 200 kSPS)
• Number of Inputs: Single input channel
• Data Interface: SPI protocol compatibility
• Architecture: SAR-based ADC
• Reference Configuration: External reference support
• Supply Voltage Compatibility: Operation within or encompassing 5V supply requirements
• Operating Temperature Range: -40°C to 85°C minimum
• Package Compatibility: 8-pin DIP form factor (through-hole or surface-mount variants acceptable)

The substitute parts listed maintain functional equivalence through matching or exceeding these core parameters. Variations in input type (differential vs. pseudo-differential), supply voltage range flexibility, and packaging format represent acceptable trade-offs for component substitution in this category.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: ADS7816U

The ADS7816U is the manufacturer-recommended equivalent from Texas Instruments. It maintains identical electrical specifications to the ADS7816PC, including 12-bit resolution, 200 kSPS sampling rate, differential input configuration, and 5V supply operation. The primary difference is packaging format: ADS7816U uses 8-SOIC surface-mount packaging versus the through-hole 8-PDIP of the original part. ADS7816U is active in production status with full ROHS3 compliance and equivalent moisture sensitivity rating.

Secondary Recommendations: MCP3201-BI/P and MCP3201-CI/P

Both Microchip MCP3201 variants provide 12-bit resolution with SPI interface and maintain the 8-PDIP through-hole package format of the original ADS7816PC. These parts operate at 100 kSPS sampling rate (half the original specification) and feature pseudo-differential input configuration. Supply voltage range is expanded to 2.7V–5.5V, providing greater flexibility in mixed-voltage systems. Both variants are active in production with ROHS3 compliance and superior moisture sensitivity rating (MSL 1 vs. MSL 2).

Alternative Consideration: MCP3001-I/P

The MCP3001-I/P provides 10-bit resolution with 200 kSPS sampling rate in 8-PDIP through-hole packaging. This part is suitable only for applications where 10-bit resolution is acceptable. It maintains the original sampling rate and through-hole package format. Supply voltage range is 2.7V–5.5V with active production status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can ADS7816U replace ADS7816PC in existing PCB designs?

A: ADS7816U is electrically equivalent but uses 8-SOIC surface-mount packaging instead of 8-PDIP through-hole. Direct PCB substitution requires redesign of the footprint and assembly process. For through-hole designs, MCP3201-BI/P or MCP3201-CI/P are preferred alternatives.

Q: What is the difference between differential and pseudo-differential input configurations?

A: The ADS7816PC features true differential inputs, allowing independent biasing of both input terminals. Microchip MCP3201 and MCP3001 devices use pseudo-differential configuration where one input is internally biased. This affects signal conditioning requirements and input impedance characteristics in the application circuit.

Q: Why do MCP3201 variants operate at 100 kSPS instead of 200 kSPS?

A: The MCP3201 architecture operates at half the sampling rate of the ADS7816PC. For applications requiring 200 kSPS conversion, the ADS7816U maintains this specification. For applications with lower bandwidth requirements, the reduced sampling rate is acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts—ADS7816U, MCP3001-I/P, MCP3201-BI/P, and MCP3201-CI/P—are ROHS3 compliant and suitable for applications with environmental compliance requirements.

Q: What is the moisture sensitivity difference between ADS7816PC and substitute parts?

A: ADS7816PC has MSL 2 (1 Year shelf life). MCP3001-I/P, MCP3201-BI/P, and MCP3201-CI/P have MSL 1 (Unlimited shelf life), providing superior moisture tolerance and extended storage capability.

Q: Can MCP3001-I/P be used as a direct replacement?

A: MCP3001-I/P is functionally compatible in 8-PDIP through-hole format and maintains 200 kSPS sampling rate. However, it provides only 10-bit resolution versus the 12-bit specification of ADS7816PC. Use only in applications where 10-bit resolution meets system requirements.

Q: What supply voltage range should be considered for substitute selection?

A: ADS7816PC requires fixed 5V supply. MCP3201 and MCP3001 variants accept 2.7V–5.5V supply range, enabling use in systems with variable or lower supply voltages. ADS7816U maintains the 5V requirement of the original part.