ADS1210P Equivalent & Substitute Parts

Part Overview

The ADS1210P is a 24-bit Sigma-Delta analog-to-digital converter manufactured by Texas Instruments, designed for single-channel differential input data acquisition applications. This device operates with 5V analog and digital supply voltages and delivers a 16 kHz sampling rate through an SPI interface. The ADS1210P is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain core functionality while accommodating modern packaging and supply chain availability.

Substiute Parts

ADS1210P

Texas InstrumentsIn Stock: 20358ADS1210P Datasheet

Current PartRFQ

ADS1220IPW

Texas InstrumentsIn Stock: 2301ADS1220IPW Datasheet

MFR RecommendedRFQ

ADS1246IPW

Texas InstrumentsIn Stock: 3985ADS1246IPW Datasheet

MFR RecommendedRFQ

ADS1255IDBR

Texas InstrumentsIn Stock: 4690ADS1255IDBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADS1210P is determined by the following core parameters: 24-bit resolution, Sigma-Delta architecture, SPI data interface, and integrated programmable gain amplifier (PGA). The substitute parts listed maintain these fundamental characteristics while offering variations in sampling rate, input channel configuration, supply voltage ranges, and package form factors.

The three qualified substitute parts are grouped as follows:

ADS1220IPW: Maintains 24-bit resolution and Sigma-Delta architecture with SPI interface. Supports 2 or 4 differential/single-ended inputs at 2 kHz sampling rate. Offers wider supply voltage range (2.3V ~ 5.5V) and includes temperature sensor. Surface mount 16-TSSOP package.

ADS1246IPW: Maintains 24-bit resolution and Sigma-Delta architecture with SPI interface. Supports 1 differential/single-ended input at 2 kHz sampling rate. Operates at 2.7V ~ 5.25V supply range. Surface mount 16-TSSOP package with improved moisture sensitivity rating.

ADS1255IDBR: Maintains 24-bit resolution and Sigma-Delta architecture with SPI interface. Supports 1 or 2 differential/single-ended inputs at 30 kHz sampling rate. Requires split supply voltages (5V analog, 1.8V ~ 3.6V digital). Surface mount 20-SSOP package.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

For applications requiring single-channel differential input with 16 kHz sampling rate: The ADS1255IDBR provides the closest sampling rate match at 30 kHz. This part requires separate analog (5V) and digital (1.8V ~ 3.6V) supply voltages, necessitating dual-supply circuit design modifications from the original ADS1210P single 5V supply architecture.

For applications with flexible sampling rate requirements below 2 kHz: Both ADS1220IPW and ADS1246IPW are suitable. The ADS1220IPW offers multi-channel capability (2 or 4 inputs) with extended temperature range (-40°C ~ 125°C) and wider supply voltage tolerance (2.3V ~ 5.5V). The ADS1246IPW maintains single-channel operation with improved moisture sensitivity rating (MSL 1 vs. MSL 2) and narrower supply voltage range (2.7V ~ 5.25V).

For through-hole mounting requirement: No substitute parts maintain the original 18-DIP through-hole package. All substitutes employ surface-mount technology (TSSOP or SSOP), requiring PCB redesign and assembly process modification.

For active product status and supply chain continuity: All three substitute parts are classified as active products with current inventory availability, ensuring long-term sourcing capability compared to the obsolete ADS1210P.

Frequently Asked Questions (FAQ)

Q: Can ADS1220IPW directly replace ADS1210P in existing designs?

A: Direct replacement is not possible without design modifications. The ADS1220IPW differs in package type (16-TSSOP surface mount vs. 18-DIP through hole), sampling rate (2 kHz vs. 16 kHz), and supply voltage range (2.3V ~ 5.5V vs. fixed 5V). PCB layout and power supply circuit redesign are required.

Q: Which substitute part maintains the closest sampling rate to the original ADS1210P?

A: The ADS1255IDBR operates at 30 kHz sampling rate, exceeding the ADS1210P's 16 kHz specification. However, this part requires dual supply voltages (5V analog, 1.8V ~ 3.6V digital) versus the original single 5V supply, introducing additional circuit complexity.

Q: Are all substitute parts suitable for -40°C to 85°C temperature range applications?

A: Yes. The ADS1210P, ADS1255IDBR operate within -40°C to 85°C. The ADS1220IPW extends to -40°C to 125°C, and the ADS1246IPW operates to -40°C to 105°C. All substitutes meet or exceed the original temperature specification.

Q: What is the impact of switching from through-hole to surface-mount packages?

A: Surface-mount packages (TSSOP and SSOP) require different PCB footprints, assembly equipment, and soldering processes compared to through-hole DIP packages. Design and manufacturing process changes are mandatory.

Q: Do substitute parts maintain the same SPI interface protocol?

A: Yes. All substitute parts use SPI data interface, maintaining software compatibility at the communication protocol level. However, register maps and configuration commands may differ; firmware review is necessary.

Q: Which substitute offers the best supply voltage flexibility?

A: The ADS1220IPW provides the widest supply voltage range (2.3V ~ 5.5V for both analog and digital supplies), offering maximum flexibility for multi-voltage system designs. The ADS1246IPW operates at 2.7V ~ 5.25V, and the ADS1255IDBR requires split supplies (5V analog, 1.8V ~ 3.6V digital).