Part A
ADS1241E
Texas Instruments
- Lifecycle
- Active
- Stock
- 1322 PCS
- Package
- SSOP-28
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Not a drop-in replacement
The ADS1241E and ADS1282HIPW are not drop-in replacements for one another. The ADS1241E is a 24-bit, 8-channel delta-sigma ADC in a 28-pin SSOP with a single unipolar/bipolar supply and SPI interface, while the ADS1282HIPW is a 31-bit, 2-channel delta-sigma ADC in a 28-pin TSSOP with integrated PGA and a different supply and interface architecture. The differences in resolution, channel count, package footprint, and supply requirements make direct substitution impractical without redesign.
Different resolution
Different channel count
Different package footprint
Different supply architecture
Parts at a glance
Part B
ADS1282HIPW
Texas Instruments
- Lifecycle
- Active
- Stock
- 6044 PCS
- Package
- TSSOP-28
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADS1241E | ADS1282HIPW | Why it matters |
|---|---|---|---|
| Resolution (bits) | 24 | 31 | Higher resolution enables finer measurement of small signal changes, which is critical for precision sensing applications. |
| Number of input channels | 8 (single-ended) / 4 (differential) | 2 (differential) | Channel count determines how many sensors or signal sources can be connected without external multiplexing. |
| Maximum sample rate | 15 SPS | 4000 SPS | Sample rate limits the bandwidth of signals that can be captured; higher rates suit faster-changing or higher-frequency inputs. |
| Interface type | SPI | SPI | The digital interface must match the host microcontroller or DSP to allow direct communication. |
| Supply voltage (analog) | 2.7 V to 5.25 V | 4.75 V to 5.25 V (analog) / 1.8 V to 3.6 V (digital) | Supply voltage compatibility determines whether the part can operate from the available power rails in a design. |
| Input type | Single-ended / Differential | Differential | Differential inputs reject common-mode noise, while single-ended inputs simplify wiring for ground-referenced signals. |
| Package | SSOP-28 | TSSOP-28 | Package footprint and pinout affect PCB layout and whether a drop-in replacement is possible. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range must cover the application environment to ensure reliable operation. |
| Internal PGA gain range | 1 to 128 | 1 to 64 | Programmable gain allows small signals to be amplified before conversion, improving effective resolution for low-level sensors. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1241E | ADS1282HIPW |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 24 | - |
| Sampling Rate(Per Second) | 15 | - |
| Number of Inputs | 8 | - |
| Input Type | Differential, Single Ended | - |
| Data Interface | SPI | - |
| Configuration | MUX-PGA-ADC | - |
| Number of A/D Converters | 1 | - |
| Architecture | Sigma-Delta | - |
| Reference Type | External | - |
| Voltage - Supply, Analog | 2.7V ~ 3.3V, 5V | - |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | - |
| Features | PGA | - |
| Operating Temperature | -40°C ~ 85°C | - |
Frequently asked questions
What are the primary differences between the ADS1241E and ADS1282HIPW?
The ADS1241E is a 24-bit delta-sigma ADC with a maximum data rate of 15 SPS and a single-channel differential input, housed in a 28-pin TSSOP package. The ADS1282HIPW is a 31-bit delta-sigma ADC designed for seismic and high-resolution measurement applications, offering data rates up to 4 kSPS, a programmable gain amplifier, and dual-channel input, housed in a 28-pin TSSOP package. The ADS1282HIPW provides significantly higher resolution and faster data rates than the ADS1241E.
Are the ADS1241E and ADS1282HIPW pin-compatible?
No. Although both devices are offered in a 28-pin TSSOP package, their pin functions and internal architectures differ. The ADS1241E and ADS1282HIPW are not pin-compatible, and a direct PCB drop-in replacement is not possible without redesigning the board layout and verifying all pin assignments against the respective datasheets.
What are the resolution and data rate specifications for each device?
The ADS1241E provides 24-bit resolution with a maximum output data rate of 15 SPS. The ADS1282HIPW provides 31-bit resolution with selectable data rates up to 4 kSPS. The ADS1282HIPW is therefore suited to higher-bandwidth, higher-resolution applications such as seismic sensing, while the ADS1241E targets low-speed precision measurement.
Do both devices include a programmable gain amplifier (PGA)?
The ADS1282HIPW integrates a programmable gain amplifier with selectable gains, allowing direct interface to low-level sensors. The ADS1241E does not include an integrated PGA; it provides a fixed-gain input structure. Designs requiring variable gain should account for this difference when comparing the two parts.
What are the typical supply voltage and power consumption differences?
The ADS1241E operates from a single 2.7 V to 5.25 V analog supply and a 2.7 V to 5.25 V digital supply, with low power consumption suitable for portable instrumentation. The ADS1282HIPW operates from a 5 V analog supply and a 1.8 V to 3.3 V digital supply, with power consumption specified for high-resolution seismic-grade performance. Exact current and power figures should be taken from the respective manufacturer datasheets.
Which device is better suited for seismic or high-resolution sensor applications?
The ADS1282HIPW is specifically designed for seismic and high-resolution measurement systems, offering 31-bit resolution, data rates up to 4 kSPS, and an integrated PGA. The ADS1241E, with 24-bit resolution and a maximum 15 SPS data rate, is better suited to slow, precision DC measurements such as temperature or pressure sensing rather than seismic acquisition.
Can the ADS1241E be used as a replacement for the ADS1282HIPW in an existing design?
No. The two devices differ in resolution, data rate, PGA availability, supply requirements, and pin functions. Substituting the ADS1241E for the ADS1282HIPW would require redesign of the analog front end, revalidation of the signal chain, and confirmation that the lower 15 SPS data rate and 24-bit resolution meet the application requirements. Direct substitution is not supported.