Part A
ADS124S06IPBSR
Texas Instruments
- Lifecycle
- Active
- Stock
- 6728 PCS
- Package
- TQFP-32
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Not a drop-in replacement
The ADS1292IPBSR and ADS124S06IPBSR are not drop-in replacements for one another. The ADS1292IPBSR is a dual-channel, 24-bit biopotential front-end with integrated ECG/EEG-specific features, while the ADS124S06IPBSR is a six-channel, 24-bit precision delta-sigma ADC for general-purpose sensor measurement. Their channel architecture, integrated functionality, and target applications differ fundamentally, so substituting one for the other requires a full system redesign rather than a direct swap.
Different channel count
Different integrated front-end
Different input architecture
Different target application
Parts at a glance
Part B
ADS1292IPBSR
Texas Instruments
- Lifecycle
- Active
- Stock
- 3344 PCS
- Package
- TQFP-32
- Series
- Acquisição de dados - Front End analógico (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 | ADS1292IPBSR | ADS124S06IPBSR | Why it matters |
|---|---|---|---|
| Resolution (bits) | 24 | 24 | Both are 24-bit delta-sigma ADCs, so resolution alone does not distinguish them for substitutability. |
| Number of input channels | 2 differential (2 channels) | 6 single-ended / 3 differential (6 channels) | Channel count determines how many signals can be measured; the ADS124S06 supports more inputs, so it is not a drop-in replacement where only two channels are needed. |
| Primary application focus | Biopotential / ECG / EEG measurement | Precision sensor / general-purpose measurement | The ADS1292 integrates biopotential-specific features (e.g., respiration, lead-off), while the ADS124S06 targets general precision sensing, affecting functional substitutability. |
| Integrated PGA | Yes (gain 1 to 12) | Yes (gain 1 to 128) | PGA gain range affects the ability to amplify small signals; the wider gain range of the ADS124S06 suits lower-level sensor inputs. |
| Data rate (max SPS) | 8 kSPS | 4 kSPS | Maximum sample rate limits signal bandwidth; the ADS1292 offers higher throughput, which matters for faster biopotential sampling. |
| Supply voltage (analog) | 2.7 V to 5.25 V (unipolar) / ±2.5 V (bipolar) | 2.7 V to 5.25 V (analog) / 2.7 V to 3.6 V (digital) | Supply requirements must match the system rails; differing analog/digital supply constraints affect direct substitution. |
| Interface | SPI | SPI | Both use SPI, so the host communication interface is compatible, easing board-level integration. |
| Package | TQFP-32 | TQFP-32 | Identical package and pin count simplify PCB footprint reuse, though pin functions may differ. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +125 °C | The wider temperature range of the ADS124S06 supports harsher environments, which can matter for industrial versus medical use. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS124S06IPBSR | ADS1292IPBSR |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 24 | 24 |
| Sampling Rate(Per Second) | 4k | - |
| Number of Inputs | 6 | - |
| Input Type | Single Ended | - |
| Data Interface | SPI | - |
| Configuration | MUX-PGA-ADC | - |
| Ratio - S / H: ADC | 0:1 | - |
| Number of A/D Converters | 1 | - |
| Architecture | Sigma-Delta | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V | 1.7V ~ 3.6V |
| Features | PGA | - |
| Operating Temperature | -50°C ~ 125°C | - |
| Number of Channels | - | 2 |
| Power (Watts) | - | 740 µW |
| Mounting Type | - | Surface Mount |
Frequently asked questions
What are the primary functional differences between the ADS1292IPBSR and the ADS124S06IPBSR?
The ADS1292IPBSR is a 2-channel, 24-bit delta-sigma analog front end (AFE) designed specifically for biopotential measurements such as ECG and respiration, integrating a programmable gain amplifier (PGA), internal reference, oscillator, and right-leg drive circuitry. The ADS124S06IPBSR is a 6-channel, 24-bit delta-sigma ADC intended for precision sensor and industrial measurement applications, featuring a PGA, internal reference, and sensor excitation current sources but without the biopotential-specific features of the ADS1292. In short, the ADS1292 targets medical biopotential AFE use, while the ADS124S06 targets general-purpose precision signal acquisition.
Are the ADS1292IPBSR and ADS124S06IPBSR pin-to-pin compatible?
No. Both devices are offered in a TQFP-32 (PBS) package, but their pin functions and internal signal routing differ because they serve different application classes. The ADS1292 integrates biopotential-specific blocks (such as right-leg drive and respiration impedance measurement), while the ADS124S06 exposes six analog inputs and general-purpose ADC control pins. A direct drop-in replacement is therefore not supported; the PCB layout and pin assignments must be reviewed against each device's datasheet.
How do the channel counts and input configurations compare?
The ADS1292IPBSR provides 2 differential input channels (or 2 single-ended configurations) optimized for biopotential signal capture. The ADS124S06IPBSR provides 6 analog inputs that can be configured as single-ended or differential pairs, giving greater flexibility for multi-sensor precision measurement. Designs requiring more than two simultaneous precision channels should favor the ADS124S06, while two-channel biopotential acquisition is the ADS1292's intended use case.
Do both devices share the same digital interface and supply requirements?
Both devices use an SPI-compatible serial interface and operate from an analog supply in the 2.7 V to 5.25 V range with a separate digital supply, but the exact recommended supply ranges, reference options, and register maps differ and must be verified against the respective datasheets. The ADS1292 includes an integrated oscillator and reference tailored to biopotential AFE operation, whereas the ADS124S06 provides its own reference and excitation features for sensor measurement. Firmware and register configurations are not interchangeable between the two parts.
Which device is more appropriate for ECG or biopotential acquisition?
The ADS1292IPBSR is the appropriate choice for ECG and biopotential acquisition because it is purpose-built as a biopotential AFE with integrated PGA, right-leg drive, and respiration measurement support. The ADS124S06IPBSR is a general-purpose precision ADC and lacks these biopotential-specific integrated functions, so it is not the intended solution for ECG front-end designs.
Which device is better suited for multi-channel industrial sensor measurement?
The ADS124S06IPBSR is better suited for multi-channel industrial sensor measurement because it offers 6 analog inputs, a precision PGA, and sensor excitation current sources in a single device. The ADS1292IPBSR, with only 2 channels and biopotential-focused features, is not optimized for general multi-sensor industrial acquisition. Selection should still be confirmed against the specific sensor types, required resolution, and data rate of the target application.
Can the ADS124S06IPBSR be used as a substitute for the ADS1292IPBSR in an existing design?
No, it cannot be treated as a direct substitute. Although both are 24-bit delta-sigma converters in a TQFP-32 package, the ADS124S06 lacks the ADS1292's integrated biopotential blocks (right-leg drive, respiration impedance measurement) and has a different pinout and register map. Substitution would require a redesign of the analog front end, PCB layout, and firmware, and must be validated against the manufacturer datasheets for the target application.
What should be verified before selecting between these two parts?
Before selecting, verify the required channel count, input configuration (differential vs. single-ended), whether biopotential-specific features such as right-leg drive or respiration measurement are needed, the required data rate and resolution, supply and reference requirements, and the digital interface and register map. These parameters should be confirmed directly from the official manufacturer datasheets for the ADS1292IPBSR and ADS124S06IPBSR, as the two devices are not interchangeable and serve different application classes.