Part A
ADS131A02IPBSR
德州儀器
- Lifecycle
- Active
- Stock
- 1696 件
- Package
- TQFP-32
- Series
- 資料獲取-類比前端（AFE）
Replacement verdict
Compatible functional replacement candidate
The ADS131A02IPBS and ADS131A02IPBSR are functionally equivalent, sharing identical silicon, package, and performance characteristics; the only distinction is the tape-and-reel packaging designation of the R suffix, making them a direct drop-in replacement candidate for the same design.
Function and Device Architecture
High match
Package and Pinout
High match
Electrical Specifications
High match
Packaging and Ordering Format
High match
Parts at a glance
Part B
ADS131A02IPBS
德州儀器
- Lifecycle
- Active
- Stock
- 7625 件
- Package
- TQFP-32
- Series
- 資料獲取-類比前端（AFE）
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADS131A02IPBS | ADS131A02IPBSR | Why it matters |
|---|---|---|---|
| Number of Channels | 2 | 2 | Determines how many independent analog signals can be measured simultaneously; identical channel count means direct functional equivalence. |
| Resolution | 24 bit | 24 bit | Sets the ADC's dynamic range and precision; matching resolution ensures equivalent measurement accuracy. |
| Sampling Rate (Max) | 128 kSPS | 128 kSPS | Defines the maximum conversion throughput; identical rates preserve timing performance in the target application. |
| Supply Voltage (Analog) | 3.0 V to 3.6 V | 3.0 V to 3.6 V | Must match the system power rail; identical analog supply range ensures drop-in compatibility. |
| Supply Voltage (Digital) | 1.65 V to 3.6 V | 1.65 V to 3.6 V | Determines logic-level compatibility with the host controller; matching range supports the same interface voltages. |
| Interface Type | SPI | SPI | Defines how the device communicates with the MCU; identical interface allows reuse of the same firmware and pinout. |
| Package / Case | 32-TQFP (5x5) | 32-TQFP (5x5) | Footprint and pin layout must match for PCB compatibility; identical package enables direct board replacement. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Ensures reliable operation across environmental conditions; matching range confirms suitability for the same environments. |
| Packaging / Reel Option | Tray | Tape & Reel | Affects manufacturing handling and assembly line feed method; the "R" suffix denotes reel packaging for automated pick-and-place, while the base part is tray-packaged. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS131A02IPBSR | ADS131A02IPBS |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 24 | 24 |
| Number of Channels | 2 | 2 |
| Power (Watts) | 2.6 mW | 2.6 mW |
| Voltage - Supply, Analog | 3V ~ 3.45V | 3V ~ 3.45V |
| Voltage - Supply, Digital | 1.65V ~ 3.6V | 1.65V ~ 3.6V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between ADS131A02IPBS and ADS131A02IPBSR?
The ADS131A02IPBS and ADS131A02IPBSR are the same device: a 2-channel, simultaneous-sampling, 24-bit delta-sigma ADC from Texas Instruments in a TQFP-32 (PBS) package. The "R" suffix on ADS131A02IPBSR denotes tape-and-reel packaging, while ADS131A02IPBS is the tube/tray ordering variant. Electrical specifications, pinout, and functional behavior are identical.
Are ADS131A02IPBS and ADS131A02IPBSR electrically and functionally interchangeable?
Yes. Both orderable part numbers share the same die, package (TQFP-32), pinout, and datasheet specifications. The only difference is the shipping media (tape-and-reel for the R suffix versus tube/tray), so they are interchangeable in design and application.
What are the key specifications of the ADS131A02?
The ADS131A02 is a 2-channel, 24-bit, simultaneous-sampling delta-sigma ADC with a maximum data rate of 128 kSPS per channel, an SPI-compatible serial interface, an internal oscillator, and an internal reference. It operates from an analog supply of 3.0 V to 3.6 V and a digital supply of 1.8 V to 3.6 V, and is specified over the -40°C to +125°C temperature range.
Which package do ADS131A02IPBS and ADS131A02IPBSR use?
Both variants use the TQFP-32 package, identified by the "PBS" suffix in the part number. The package is a 32-pin thin quad flat pack, and the PCB land pattern and pin assignments are identical between the two orderable part numbers.
Does the "R" suffix affect the moisture sensitivity level or handling requirements?
No. The "R" suffix indicates tape-and-reel packaging only. Moisture sensitivity level, reflow profile, and handling requirements are determined by the TQFP-32 package and are the same for ADS131A02IPBS and ADS131A02IPBSR, as documented in the manufacturer's package and reliability data.
Which variant should be selected for high-volume automated assembly?
ADS131A02IPBSR (tape-and-reel) is generally preferred for high-volume automated pick-and-place assembly because the reel format supports automated feeders. ADS131A02IPBS (tube/tray) is typically used for prototyping, low-volume runs, or manual handling.
Can ADS131A02IPBS and ADS131A02IPBSR be mixed on the same PCB assembly?
Yes. Because both part numbers are the same device in the same TQFP-32 package with identical pinout and electrical specifications, they can be used interchangeably on the same PCB assembly without design changes. The choice between them affects only the assembly feed method, not the board design.