Part A
ADS131E08IPAGR
Texas Instruments
- Lifecycle
- Active
- Stock
- 6530 PCS
- Package
- TQFP-64
- Series
- Acquisição de dados - Front End analógico (AFE)
Replacement verdict
Compatible functional replacement candidate
The ADS131E08IPAGR is a higher-channel-count member of the same ADS131E0x family as the ADS131E06IPAGR, sharing identical package, supply, interface, and architecture characteristics. It is a viable functional replacement candidate where the additional two input channels are acceptable, but the channel count difference must be validated against the target design requirements.
Channel Count
High match
Package Type
High match
Supply Voltage
High match
Interface Type
High match
Parts at a glance
Part B
ADS131E06IPAGR
Texas Instruments
- Lifecycle
- Active
- Stock
- 7046 PCS
- Package
- TQFP-64
- 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 | ADS131E06IPAGR | ADS131E08IPAGR | Why it matters |
|---|---|---|---|
| Number of input channels | 6 | 8 | Determines how many simultaneous analog signals can be measured; a direct functional difference affecting system channel count. |
| Resolution | 24 bit | 24 bit | Sets the ADC precision; identical resolution means comparable measurement accuracy per channel. |
| Maximum sample rate | 64 kSPS | 64 kSPS | Defines the highest per-channel throughput; matching rates support equivalent signal bandwidth. |
| Supply voltage (analog) | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Determines power supply compatibility; identical ranges allow the same power design. |
| Interface | SPI | SPI | Defines the digital communication protocol; matching interfaces simplify drop-in substitution. |
| Package | TQFP-64 | TQFP-64 | Same package and footprint enable board-level interchangeability. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms environmental compatibility for the same application conditions. |
| Input-referred noise (typical) | Lower total noise due to fewer channels | Slightly higher total noise with more channels | Channel count affects aggregate noise and crosstalk; relevant when comparing signal integrity in multi-channel systems. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS131E08IPAGR | ADS131E06IPAGR |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 16, 24 | 16, 24 |
| Number of Channels | 8 | 6 |
| Power (Watts) | 17.6 mW | 13.5 mW |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 1.8V ~ 3.6V | 1.8V ~ 3.6V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the primary difference between the ADS131E06IPAGR and ADS131E08IPAGR?
The ADS131E06IPAGR is a 6-channel, simultaneously sampling, 24-bit delta-sigma ADC, while the ADS131E08IPAGR is an 8-channel version of the same family. Both are pin-compatible in the same TQFP-64 package (PAG suffix), but the ADS131E08 provides two additional input channels. All other core specifications, including data rate, PGA gain settings, and SPI interface, are identical across the two devices.
Are the ADS131E06IPAGR and ADS131E08IPAGR pin-compatible and package-compatible?
Yes. Both devices are offered in the same 64-pin TQFP package (PAG suffix) with identical pinouts for shared functions. The ADS131E08IPAGR uses the additional pins for the extra input channels (IN7P/IN7N and IN8P/IN8N), which are not present on the ADS131E06IPAGR. PCB layouts designed for the 6-channel device can accommodate the 8-channel device if the additional channel pins are routed or left unconnected as appropriate.
Can the ADS131E08IPAGR be used as a drop-in replacement for the ADS131E06IPAGR?
Functionally, the ADS131E08IPAGR can operate in a design built for the ADS131E06IPAGR because the shared pins and SPI interface are identical. However, a drop-in replacement requires that the additional channel input pins be properly terminated or left unconnected per the datasheet, and that the host firmware be configured for the correct channel count. The ADS131E06IPAGR cannot replace the ADS131E08IPAGR if all 8 channels are required.
Do both devices share the same resolution and data rate specifications?
Yes. Both the ADS131E06IPAGR and ADS131E08IPAGR are 24-bit delta-sigma ADCs with programmable data rates from 1 kSPS to 64 kSPS per channel. Both feature the same integrated programmable gain amplifier (PGA) with gains from 1 to 12, and the same internal reference and oscillator architecture, as documented in the Texas Instruments ADS131E06/ADS131E08 datasheet.
What is the difference in power consumption between the two devices?
The ADS131E08IPAGR typically consumes slightly more power than the ADS131E06IPAGR because it operates two additional ADC channels. The exact supply current depends on the configured data rate and PGA gain. Designers should consult the electrical characteristics table in the Texas Instruments datasheet for the specific power consumption at their target operating conditions rather than assuming identical values.
Are both devices suitable for the same applications, such as ECG and EEG systems?
Yes. Both the ADS131E06IPAGR and ADS131E08IPAGR are designed for biopotential measurement applications including ECG, EEG, and EMG, as well as power monitoring and industrial process control. The choice between them depends on the number of signal channels required: the 6-channel device suits compact designs, while the 8-channel device accommodates systems needing two additional simultaneous input channels.
Do both parts support the same SPI interface and daisy-chain configuration?
Yes. Both devices use the same SPI-compatible serial interface with support for daisy-chaining multiple devices, as well as the same DRDY, RESET, and START control signals. The register map and command set are identical between the ADS131E06IPAGR and ADS131E08IPAGR, with channel-specific registers for the additional channels present only on the 8-channel device.