ADS1210UG4 Equivalent & Substitute Parts

Part Overview

The ADS1210UG4 is a 24-bit Sigma-Delta analog-to-digital converter manufactured by Texas Instruments, designed for precision data acquisition applications. It features a single differential input, integrated programmable gain amplifier (PGA), and SPI digital interface. The device operates from a 5V supply and is housed in an 18-SOIC package.

The ADS1210UG4 is classified as obsolete. Identifying suitable substitute parts is necessary to maintain design continuity, ensure component availability, and support long-term production requirements.

Substiute Parts

ADS1210UG4

Texas InstrumentsIn Stock: 822ADS1210UG4 Datasheet

Current PartRFQ

ADS1246IPWR

Texas InstrumentsIn Stock: 15741ADS1246IPWR Datasheet

MFR RecommendedRFQ

ADS1255IDBR

Texas InstrumentsIn Stock: 4690ADS1255IDBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADS1210UG4 must satisfy the following core electrical and mechanical criteria:

Primary Compatibility Requirements:

• 24-bit resolution (maintains data precision equivalence)
• Sigma-Delta architecture (ensures signal processing compatibility)
• SPI digital interface (preserves firmware and protocol compatibility)
• Differential input capability (supports existing sensor configurations)
• PGA integration (maintains analog signal conditioning functionality)

Secondary Compatibility Factors:

• Operating temperature range overlap with -40°C to 85°C minimum
• Surface mount technology (maintains PCB assembly compatibility)
• Active product status (ensures long-term availability and support)

The identified substitute parts—ADS1246IPWR and ADS1255IDBR—meet these core requirements while offering enhanced features and improved availability compared to the obsolete ADS1210UG4.

Parameter Comparison

Engineering Selection Recommendations

ADS1246IPWR Selection Criteria:

• Suitable for applications requiring lower sampling rates (2 kSPS maximum)
• Offers extended operating temperature range (-40°C to 105°C)
• Provides superior moisture sensitivity rating (MSL 1, Unlimited shelf life)
• Supports flexible supply voltage range (2.7V to 5.25V for both analog and digital)
• Requires PCB layout modification due to 16-TSSOP package (smaller than 18-SOIC)
• Active product status ensures long-term availability and manufacturer support

ADS1255IDBR Selection Criteria:

• Suitable for applications requiring higher sampling rates (30 kSPS maximum)
• Maintains 5V analog supply compatibility with original design
• Supports flexible digital supply voltage (1.8V to 3.6V)
• Offers dual-input capability for expanded measurement configurations
• Requires PCB layout modification due to 20-SSOP package (larger than 18-SOIC)
• Active product status ensures long-term availability and manufacturer support

Both substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original ADS1210UG4 certification profile.

Frequently Asked Questions (FAQ)

Q: Can ADS1246IPWR directly replace ADS1210UG4 without firmware changes? A: Both devices use SPI interface and maintain 24-bit Sigma-Delta architecture. However, the ADS1246IPWR operates at a maximum sampling rate of 2 kSPS compared to the ADS1210UG4's 16 kSPS. Firmware compatibility depends on whether your application can operate within the lower sampling rate specification. Register maps and command structures require verification against respective datasheets.

Q: What are the package footprint differences between these parts? A: The ADS1210UG4 uses 18-SOIC (0.295" width), ADS1246IPWR uses 16-TSSOP (0.173" width), and ADS1255IDBR uses 20-SSOP (0.209" width). PCB layout modifications are required for either substitute. Pin assignments differ; direct socket compatibility is not possible.

Q: Which substitute part is better for high-speed data acquisition? A: The ADS1255IDBR supports 30 kSPS sampling rate, exceeding the original ADS1210UG4's 16 kSPS capability. The ADS1246IPWR is limited to 2 kSPS and is unsuitable for high-speed applications.

Q: Are there supply voltage compatibility concerns? A: The ADS1210UG4 requires fixed 5V supplies. The ADS1246IPWR accepts 2.7V to 5.25V for both supplies, offering greater flexibility. The ADS1255IDBR requires 5V analog supply but accepts 1.8V to 3.6V digital supply, requiring separate voltage regulation for the digital domain.

Q: What is the moisture sensitivity impact of substitution? A: The ADS1210UG4 has MSL 2 (1 Year shelf life). The ADS1246IPWR offers superior MSL 1 (Unlimited shelf life), reducing moisture-related failures during storage. The ADS1255IDBR maintains MSL 2 (1 Year), equivalent to the original part.

Q: Are both substitute parts actively manufactured? A: Yes. Both ADS1246IPWR and ADS1255IDBR are classified as Active products with current inventory availability. The ADS1210UG4 is obsolete and no longer manufactured by Texas Instruments.