Part A
ADS124S06IPBS
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 2820 PCS
- Package
- TQFP-32
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Not a drop-in replacement
The ADS1292IPBSR and ADS124S06IPBS are not drop-in replacements for one another. The ADS1292IPBSR is a dual-channel, 24-bit simultaneous-sampling biopotential front end with integrated ECG/EMG/respiration features, while the ADS124S06IPBS is a six-channel, 24-bit precision delta-sigma ADC for general-purpose sensor measurement. Their differing channel counts, integrated signal-chain functions, and target applications make direct substitution impractical without redesign.
Different channel count
Different integrated front-end features
Different input architecture
Different target application
Parts at a glance
Part B
ADS1292IPBSR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 3344 PCS
- Package
- TQFP-32
- Series
- Data Acquisition - Analog Front End (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 | ADS124S06IPBS | Why it matters |
|---|---|---|---|
| Number of ADC channels | 2 | 6 | Channel count determines how many independent signal inputs can be measured simultaneously; a 6-channel part can replace a 2-channel part only if the extra channels are unused or the system is redesigned. |
| Resolution | 24 bit | 24 bit | Both provide 24-bit resolution, so precision is comparable; this is a key match for high-accuracy measurement applications. |
| Primary application focus | ECG / biopotential measurement | Precision sensor / general-purpose measurement | The ADS1292 integrates ECG-specific features (e.g., respiration and lead-off detection), while the ADS124S06 is a general precision ADC; functional substitutability depends on whether those specialized features are required. |
| Integrated PGA | Yes | Yes | Both include a programmable gain amplifier, allowing small signals to be amplified before conversion; this supports direct sensor interfacing in both parts. |
| Maximum data rate | 8 kSPS | 4 kSPS | Data rate affects the ability to capture fast-changing signals; the ADS1292 supports higher throughput, which matters for dynamic biopotential signals. |
| Supply voltage | 2.7 V to 5.25 V (analog), 1.7 V to 3.6 V (digital) | 2.7 V to 5.25 V (analog), 1.7 V to 3.6 V (digital) | Matching supply ranges mean both parts can operate in the same power domain, simplifying substitution in existing designs. |
| Package | TQFP-32 | TQFP-32 | Identical package and pin count allow potential drop-in compatibility on the PCB, reducing redesign effort. |
| Interface | SPI | SPI | Both use SPI, so the host microcontroller communication protocol remains compatible across the two parts. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +125 °C | The wider temperature range of the ADS124S06 supports harsher environments; the ADS1292 is limited to standard industrial ranges. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS124S06IPBS | 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 ADS124S06IPBS?
The ADS1292IPBSR is a 2-channel, 24-bit delta-sigma ADC designed specifically for biopotential measurements (ECG, EEG) with integrated programmable gain amplifiers, an internal reference, and a right-leg drive amplifier. The ADS124S06IPBS is a 6-channel, 24-bit delta-sigma ADC intended for precision sensor measurement applications such as temperature, pressure, and flow sensing, featuring a programmable gain amplifier, internal reference, and sensor excitation current sources. The ADS1292 integrates biopotential-specific features, while the ADS124S06 provides more input channels and general-purpose sensor biasing.
Are the ADS1292IPBSR and ADS124S06IPBS pin-to-pin compatible?
No. Both devices are offered in a TQFP-32 package, but their pin functions and internal signal routing differ because they target different applications. The ADS1292IPBSR dedicates pins to biopotential-specific functions such as the right-leg drive output and respiration measurement, while the ADS124S06IPBS assigns pins to six analog inputs, excitation current sources, and general-purpose GPIO. A direct PCB drop-in replacement is not possible without layout and schematic changes.
How do the input channel counts and data rates compare between the two devices?
The ADS1292IPBSR provides 2 differential input channels with data rates from 125 SPS to 8 kSPS. The ADS124S06IPBS provides 6 single-ended or 3 differential inputs with programmable data rates from 2.5 SPS to 4 kSPS. The ADS124S06 offers more channels and lower minimum data rates for precision sensor applications, while the ADS1292 offers higher maximum throughput for biopotential signal acquisition.
Can the ADS124S06IPBS be used for ECG or EEG signal acquisition like the ADS1292IPBSR?
The ADS124S06IPBS is a precision sensor ADC and does not integrate the biopotential-specific features of the ADS1292IPBSR, such as the right-leg drive amplifier and respiration impedance measurement. While the ADS124S06 can digitize low-level signals with its PGA and 24-bit resolution, it is not a drop-in substitute for the ADS1292 in biopotential front-end designs. The ADS1292IPBSR is the application-specific choice for ECG and EEG.
Do both devices include an internal reference and programmable gain amplifier?
Yes. Both the ADS1292IPBSR and the ADS124S06IPBS integrate a programmable gain amplifier and an internal reference. The ADS1292IPBSR includes a 2.42 V internal reference, while the ADS124S06IPBS includes a 2.5 V internal reference. External reference options are also supported on both devices, allowing designers to select the reference appropriate for their measurement accuracy requirements.
What are the supply voltage requirements for the ADS1292IPBSR and ADS124S06IPBS?
The ADS1292IPBSR operates from an analog supply (AVDD) of 2.7 V to 5.25 V and a digital supply (DVDD) of 1.7 V to 3.6 V. The ADS124S06IPBS operates from an analog supply of 2.7 V to 5.25 V and a digital supply of 2.7 V to 3.6 V. Designers should verify the exact supply ranges against the respective manufacturer datasheets for the target operating conditions.
Which device is better suited for multi-channel precision sensor measurement?
The ADS124S06IPBS is better suited for multi-channel precision sensor measurement because it provides 6 input channels, integrated excitation current sources for resistive sensors (such as RTDs and thermistors), and low data rates down to 2.5 SPS for high-resolution measurements. The ADS1292IPBSR is optimized for 2-channel biopotential acquisition and does not provide the same multi-channel sensor interface flexibility.
Do both devices support SPI communication and GPIO control?
Yes. Both the ADS1292IPBSR and the ADS124S06IPBS provide an SPI-compatible serial interface for register configuration and data readout. Both devices also include general-purpose digital I/O pins that can be configured for control or monitoring functions. The exact number and configuration of GPIO pins differ between the two devices and should be confirmed in the respective datasheets.