Part A
ADS1294IPAGR
Техасские инструменты
- Lifecycle
- Active
- Stock
- 4357 ПКС
- Package
- TQFP-64
- Series
- Сбор данных - аналоговый фронт-энд (AFE)
Replacement verdict
Compatible functional replacement candidate
The ADS1294IPAGR is a tape-and-reel packaged variant of the ADS1294IPAG, sharing identical silicon, channel count, resolution, and electrical characteristics. The only meaningful distinction is the packaging format, making the IPAGR a functionally equivalent candidate for the IPAG where reel-based assembly is preferred, subject to confirmation of reel quantity and moisture sensitivity handling requirements.
Function and Channel Count
High match
Resolution and Data Rate
High match
Package and Footprint
High match
Packaging Format
Validation required
Parts at a glance
Part B
ADS1294IPAG
Техасские инструменты
- Lifecycle
- Active
- Stock
- 1382 ПКС
- Package
- TQFP-64
- Series
- Сбор данных - аналоговый фронт-энд (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 | ADS1294IPAG | ADS1294IPAGR | Why it matters |
|---|---|---|---|
| Number of Channels | 4 | 4 | Determines how many simultaneous biopotential inputs the device can digitize; must match the target application's channel count. |
| Resolution | 24 bit | 24 bit | Sets the dynamic range and precision of the ADC; critical for low-amplitude biopotential signal acquisition. |
| Data Rate (Max) | 32 kSPS | 32 kSPS | Defines the maximum sampling throughput per channel; affects achievable signal bandwidth and noise performance. |
| Supply Voltage (Analog/Digital) | 2.7 V to 5.25 V (analog), 1.65 V to 3.6 V (digital) | 2.7 V to 5.25 V (analog), 1.65 V to 3.6 V (digital) | Determines compatibility with the system power rails and interface logic levels. |
| Interface Type | SPI | SPI | Defines the host communication protocol; must match the microcontroller or FPGA interface. |
| Integrated Features | PGA, internal reference, oscillator, lead-off detection, respiration measurement | PGA, internal reference, oscillator, lead-off detection, respiration measurement | Integrated front-end blocks reduce external component count and board area for ECG/EEG systems. |
| Package / Mounting | 64-TQFP, surface mount | 64-TQFP, surface mount | Footprint and assembly compatibility must match the PCB layout for drop-in substitution. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Ensures the device meets the environmental requirements of the target application. |
| Packaging / Ordering Format | Tray | Tape and reel | Affects manufacturing handling and pick-and-place assembly; the reel variant suits high-volume automated production while the tray suits prototyping or low-volume runs. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1294IPAGR | ADS1294IPAG |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 24 | 24 |
| Number of Channels | 4 | 4 |
| Power (Watts) | 10.1 mW | 10.1 mW |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 1.65V ~ 3.6V | 1.65V ~ 3.6V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the ADS1294IPAG and the ADS1294IPAGR?
The ADS1294IPAG and ADS1294IPAGR are the same device: a 4-channel, 24-bit delta-sigma analog front end for biopotential measurements in a 64-pin TQFP package. The suffix difference is the packing option: the ADS1294IPAG is supplied in trays, while the ADS1294IPAGR is supplied in tape-and-reel for automated assembly. Electrical and functional specifications are identical.
Are the ADS1294IPAG and ADS1294IPAGR electrically and functionally interchangeable?
Yes. Both order codes refer to the same silicon and package (64-pin TQFP, PAG). The only documented difference is the shipping media (tray versus tape-and-reel), so they are interchangeable in a design provided the assembly process supports the respective packaging format.
What are the key specifications of the ADS1294?
The ADS1294 is a 4-channel, 24-bit delta-sigma ADC with integrated programmable gain amplifiers and a built-in programmable current source for lead-off detection. It supports data rates up to 32 kSPS per channel and operates from an analog supply of 2.7 V to 5.25 V with a digital supply of 1.65 V to 3.6 V. It is specified for operation from -40 °C to +85 °C.
What package and pin count do the ADS1294IPAG and ADS1294IPAGR use?
Both devices are offered in a 64-pin TQFP (PAG) package. The package and pinout are identical between the two order codes, so PCB land patterns and footprint designs are the same.
Which applications are the ADS1294IPAG and ADS1294IPAGR intended for?
They are intended for biopotential signal acquisition such as ECG, EEG, and EMG, as well as patient monitoring and portable medical instrumentation, where multiple low-level differential channels must be digitized with high resolution.
Does the tape-and-reel version (ADS1294IPAGR) have different electrical specifications than the tray version (ADS1294IPAG)?
No. The R suffix denotes tape-and-reel packing only. The datasheet specifications, including resolution, data rate, supply range, and temperature range, apply equally to both order codes.
How should the ADS1294IPAG and ADS1294IPAGR be stored and handled?
Both are moisture-sensitive surface-mount devices and should be handled according to the moisture sensitivity level stated in the manufacturer datasheet. Tray and tape-and-reel packaging should be stored in the original sealed packaging until use, and reflow profiles should follow the manufacturer's recommended conditions.