ADS7822PC Equivalent & Substitute Parts

Part Overview

The ADS7822PC is a 12-bit Analog to Digital Converter manufactured by Texas Instruments, designed for single-channel data acquisition applications. It features a Successive Approximation Register (SAR) architecture with an external reference, operating at 200k samples per second. The device is packaged in an 8-PDIP through-hole configuration and supports dual supply voltages (2.7V–3.6V and 5V).

The ADS7822PC is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support long-term production requirements for legacy systems or new designs requiring this functional specification.

Substiute Parts

ADS7822PC

Texas InstrumentsIn Stock: 940ADS7822PC Datasheet

Current PartRFQ

MCP3201-BI/P

Microchip TechnologyIn Stock: 2703MCP3201-BI/P Datasheet

MFR RecommendedRFQ

TLV2545ID

Texas InstrumentsIn Stock: 1297TLV2545ID Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADS7822PC are selected based on strict electrical and mechanical compatibility criteria. The following parameters must align for functional substitution:

• Resolution: 12 bits
• Number of inputs: 1
• Input type: Pseudo-Differential
• Data interface: SPI
• Architecture: SAR
• Reference type: External
• Operating temperature range: −40°C to +85°C
• Configuration: S/H-ADC with 1:1 ratio

Two substitute parts meet these core requirements:

MCP3201-BI/P (Microchip Technology): Matches all electrical specifications with a sampling rate of 100k samples per second. Operates at 2.7V–5.5V supply range. Packaged in 8-PDIP through-hole format. Active product status with ROHS3 compliance.

TLV2545ID (Texas Instruments): Matches all electrical specifications with a sampling rate of 200k samples per second, identical to the original part. Operates at 2.7V–5.5V supply range. Packaged in 8-SOIC surface-mount format. Active product status with ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

MCP3201-BI/P is suitable for applications requiring through-hole mounting compatibility with the original ADS7822PC footprint. This part maintains the same 8-PDIP package format, enabling direct board-level substitution without PCB redesign. The extended supply voltage range (2.7V–5.5V) provides greater design flexibility. The sampling rate of 100k SPS is lower than the original specification; this part is appropriate only for applications where the reduced sampling rate does not impact system performance. The part is active and ROHS3 compliant, supporting modern procurement and environmental compliance requirements.

TLV2545ID is suitable for applications where sampling rate performance is critical. This part maintains the 200k SPS specification identical to the ADS7822PC and offers the extended supply voltage range (2.7V–5.5V). However, the 8-SOIC surface-mount package requires PCB redesign and assembly process changes from the original through-hole configuration. The part is active and ROHS3 compliant. This option is appropriate for new designs or board revisions where surface-mount technology is already implemented.

Both substitute parts are active products with current availability and modern compliance certifications, addressing the obsolescence of the original ADS7822PC.

Frequently Asked Questions (FAQ)

Q: Can MCP3201-BI/P directly replace ADS7822PC without PCB modification?

A: Yes, for through-hole mounting applications. Both parts use the 8-PDIP package with identical pin spacing (0.300", 7.62mm). However, the reduced sampling rate (100k SPS versus 200k SPS) must be evaluated against system timing requirements.

Q: Can TLV2545ID directly replace ADS7822PC without PCB modification?

A: No. TLV2545ID uses an 8-SOIC surface-mount package, while ADS7822PC uses an 8-PDIP through-hole package. PCB redesign and assembly process changes are required.

Q: What is the key difference between MCP3201-BI/P and TLV2545ID?

A: The primary differences are sampling rate (100k SPS versus 200k SPS) and package type (through-hole 8-PDIP versus surface-mount 8-SOIC). Both maintain identical resolution, input configuration, and data interface specifications.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both MCP3201-BI/P and TLV2545ID are ROHS3 compliant. The original ADS7822PC is RoHS non-compliant.

Q: What supply voltage range do the substitute parts support?

A: Both MCP3201-BI/P and TLV2545ID support 2.7V–5.5V for analog and digital supplies, providing a wider operating range than the original ADS7822PC (2.7V–3.6V, 5V).

Q: Are the substitute parts currently available?

A: Yes. Both parts are classified as active products. MCP3201-BI/P has 2594 units in stock; TLV2545ID has 1241 units in stock.

Q: Do the substitute parts maintain SPI interface compatibility?

A: Yes. All three parts (ADS7822PC, MCP3201-BI/P, and TLV2545ID) use SPI data interface with external reference configuration, ensuring software and firmware compatibility.