Part A
ADS1292RIPBSR
Texas Instruments
- Lifecycle
- Active
- Stock
- 7438 PCS
- Package
- TQFP-32
- Series
- Acquisition de données - Analog Front End (AFE)
Replacement verdict
Not a drop-in replacement
The ADS1298IPAG and ADS1292RIPBSR are not drop-in replacements for one another. The ADS1298IPAG provides eight simultaneous acquisition channels in a TQFP-64 package, while the ADS1292RIPBSR offers two channels with integrated respiration impedance measurement in a VQFN-32 package. Their channel count, package footprint, integrated respiration function, and supply architecture differ substantially, so a direct board-level substitution is not feasible without redesign.
Different channel count
Different package footprint
Different integrated features
Different supply architecture
Parts at a glance
Part B
ADS1298IPAG
Texas Instruments
- Lifecycle
- Active
- Stock
- 4633 PCS
- Package
- TQFP-64
- Series
- Acquisition de données - 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 | ADS1298IPAG | ADS1292RIPBSR | Why it matters |
|---|---|---|---|
| Number of input channels | 8 | 2 | Determines how many simultaneous ECG/EEG/biopotential signal channels can be acquired; a direct functional substitutability constraint. |
| Resolution (ADC bits) | 24 | 24 | Both are 24-bit delta-sigma ADCs, so resolution is identical and not a differentiator for substitutability. |
| Integrated respiration impedance measurement | No | Yes | The ADS1292R includes an on-chip respiration impedance measurement block, which the ADS1298 lacks; critical for respiration-enabled designs. |
| Data rate (max SPS per channel) | 32 kSPS | 8 kSPS | Maximum sample rate affects bandwidth and signal fidelity; the ADS1298 supports higher per-channel throughput. |
| Package | 64-TQFP (PAG) | 32-TQFP (PBS) | Different footprints and pin counts mean the parts are not drop-in compatible on a PCB. |
| Supply voltage (analog) | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Both support the same analog supply range, so power rail compatibility is equivalent. |
| Internal oscillator | Yes | Yes | Both integrate an oscillator, simplifying clocking requirements equally. |
| PGA gain settings | 1, 2, 3, 4, 6, 8, 12 | 1, 2, 3, 4, 6, 8, 12 | Identical programmable gain amplifier options provide the same input signal scaling flexibility. |
| Interface | SPI | SPI | Both use a serial SPI interface, so host-side digital connectivity is equivalent. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1292RIPBSR | ADS1298IPAG |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 24 | 24 |
| Number of Channels | 2 | 8 |
| Power (Watts) | 740 µW | 14.1 mW |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 1.7V ~ 3.6V | 1.65V ~ 3.6V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the ADS1298IPAG and ADS1292RIPBSR?
The ADS1298IPAG is an 8-channel, 24-bit delta-sigma ADC with integrated ECG front-end, while the ADS1292RIPBSR is a 2-channel, 24-bit delta-sigma ADC with integrated respiration impedance measurement. The ADS1298 provides eight simultaneous channels for multi-lead ECG, whereas the ADS1292R provides two channels plus dedicated respiration circuitry.
Do the ADS1298IPAG and ADS1292RIPBSR use the same package and pinout?
No. The ADS1298IPAG is supplied in a 64-pin TQFP package, while the ADS1292RIPBSR is supplied in a 32-pin VQFN package. The pin counts, package dimensions, and pin functions differ, so they are not pin-to-pin compatible and cannot be interchanged on the same PCB land pattern.
Can the ADS1292RIPBSR replace the ADS1298IPAG in an existing 8-channel ECG design?
No. The ADS1292RIPBSR provides only two input channels plus respiration measurement, whereas the ADS1298IPAG provides eight channels. A design requiring eight simultaneous ECG channels cannot be served by the 2-channel ADS1292RIPBSR without redesigning the channel architecture and PCB layout.
Which device supports integrated respiration impedance measurement?
The ADS1292RIPBSR integrates respiration impedance measurement circuitry, indicated by the "R" suffix in the part number. The ADS1298IPAG does not include integrated respiration impedance measurement; it is an 8-channel ECG front-end without the respiration feature.
What are the data rate and resolution specifications for these two ADCs?
Both devices are 24-bit delta-sigma ADCs. The ADS1298IPAG supports programmable data rates up to 32 kSPS per channel, and the ADS1292RIPBSR supports programmable data rates up to 8 kSPS per channel. Both provide 24-bit resolution; exact programmable rate ranges should be confirmed in the respective manufacturer datasheets.
Do both devices include integrated programmable gain amplifiers and lead-off detection?
Yes. Both the ADS1298IPAG and ADS1292RIPBSR integrate programmable gain amplifiers (PGAs) and lead-off detection circuitry for ECG applications. The ADS1298IPAG provides these features across eight channels, while the ADS1292RIPBSR provides them across two channels plus respiration support.
What are the supply voltage requirements for the ADS1298IPAG and ADS1292RIPBSR?
Both devices operate 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, consistent with the manufacturer datasheet specifications. Designers should verify exact limits and recommended operating conditions in the official datasheets before finalizing power supply designs.
Which device is more suitable for a compact single-lead or dual-lead portable ECG monitor?
The ADS1292RIPBSR is generally more suitable for compact single-lead or dual-lead portable ECG monitors because it offers two channels plus respiration measurement in a smaller 32-pin VQFN package. The ADS1298IPAG, with eight channels in a 64-pin TQFP, is better suited to multi-lead diagnostic ECG systems requiring more simultaneous channels.