Part A
ADS114S06BIPBSR
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 4800 PCS
- Package
- TQFP-32
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Replacement verdict
Not a drop-in replacement
The ADS1198CPAG and ADS114S06BIPBSR are not drop-in replacements for one another. The ADS1198CPAG is an eight-channel, 16-bit biopotential front end with integrated ECG/EEG-specific features, while the ADS114S06BIPBSR is a six-channel, 16-bit delta-sigma ADC with a different channel count, package, and application focus. Designers must validate channel count, package footprint, and interface compatibility before considering substitution.
Different channel count
Different package footprint
Different application focus
Different interface configuration
Parts at a glance
Part B
ADS1198CPAG
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 3254 PCS
- Package
- TQFP-64
- Series
- 데이터 수집 - 아날로그 프런트엔드(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 | ADS1198CPAG | ADS114S06BIPBSR | Why it matters |
|---|---|---|---|
| Number of ADC Channels | 8 | 6 | Channel count determines how many signal inputs can be measured simultaneously; a drop from 8 to 6 limits multi-channel acquisition. |
| Resolution | 16 bit | 16 bit | Both provide 16-bit resolution, so nominal dynamic range and LSB size are comparable for signal acquisition. |
| Maximum Sample Rate | 8 kSPS | 4 kSPS | Sample rate affects the bandwidth of signals that can be captured; the lower rate of the ADS114S06 may be insufficient for faster waveforms. |
| PGA Gain Range | 1 to 12 | 1 to 128 | Programmable gain sets the smallest resolvable input; the wider gain range of the ADS114S06 supports much smaller signals. |
| Supply Voltage | 2.7 V to 5.25 V (analog), 1.8 V to 3.6 V (digital) | 2.7 V to 5.25 V (analog), 2.7 V to 3.6 V (digital) | Supply requirements determine compatibility with the host logic and power rails; digital supply ranges differ slightly. |
| Interface | SPI | SPI | Both use SPI, so the same host interface type can be reused, though register maps and command sets differ. |
| Integrated Features | Internal reference, oscillator, respiration impedance measurement, lead-off detection | Internal reference, oscillator, PGA, sensor bias, IDACs | On-chip features reduce external component count; the ADS1198 targets ECG/biopotential with respiration, while the ADS114S06 targets general sensor measurement. |
| Package | 64-pin TQFP | 32-pin TQFP | Package footprint and pin count affect PCB layout and cannot be directly substituted without a board redesign. |
| Operating Temperature Range | 0°C to 70°C | -40°C to 125°C | The wider industrial temperature range of the ADS114S06 allows use in harsher environments where the ADS1198 is not rated. |
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 | ADS114S06BIPBSR | ADS1198CPAG |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 4k | - |
| Number of Inputs | 4, 6 | - |
| Input Type | Differential, Pseudo-Differential, Single Ended | - |
| Data Interface | SPI | - |
| Configuration | MUX-PGA-ADC | - |
| Number of A/D Converters | 1 | - |
| Architecture | Sigma-Delta | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | ±2.5V, 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V | 1.65V ~ 3.6V |
| Features | PGA, Temperature Sensor | - |
| Operating Temperature | -40°C ~ 125°C | - |
| Number of Channels | - | 8 |
| Power (Watts) | - | 8.2 mW |
| Mounting Type | - | Surface Mount |
Frequently asked questions
What are the primary functional differences between the ADS1198CPAG and the ADS114S06BIPBSR?
The ADS1198CPAG is an 8-channel, 16-bit delta-sigma analog front-end (AFE) designed for biopotential measurements, integrating a programmable gain amplifier, internal reference, and respiration impedance measurement circuitry. The ADS114S06BIPBSR is a 6-channel, 16-bit delta-sigma ADC with a built-in PGA and reference, intended for general-purpose precision sensor measurement. The ADS1198 is application-specific for ECG/EEG, while the ADS114S06 is a general-purpose ADC.
Are the ADS1198CPAG and ADS114S06BIPBSR pin-to-pin or package compatible?
No. The ADS1198CPAG is supplied in a 64-pin TQFP package, whereas the ADS114S06BIPBSR is supplied in a 32-pin TQFP package. The pin counts, pin functions, and package footprints differ, so they are not drop-in replacements for one another.
Do both devices support the same number of input channels?
No. The ADS1198CPAG provides 8 differential input channels, while the ADS114S06BIPBSR provides 6 single-ended or 3 differential input channels. Channel count and input configuration must be matched to the target application.
How do the data output rates of the ADS1198CPAG and ADS114S06BIPBSR compare?
The ADS1198CPAG supports programmable data rates from 250 SPS to 8 kSPS per channel. The ADS114S06BIPBSR supports programmable data rates from 5 SPS to 2 kSPS. The ADS1198 offers higher maximum throughput suitable for multi-channel biopotential sampling, while the ADS114S06 targets lower-speed precision measurements.
Do both devices include an internal voltage reference?
Yes. Both the ADS1198CPAG and the ADS114S06BIPBSR integrate an internal voltage reference, reducing external component count. External references can also be used with both devices depending on the required accuracy and configuration.
What are the typical supply voltage requirements for each device?
The ADS1198CPAG operates from an analog supply (AVDD) of 2.7 V to 5.25 V and a digital supply (DVDD) of 1.8 V to 3.6 V. The ADS114S06BIPBSR operates from an analog supply of 2.7 V to 5.25 V and a digital supply of 2.7 V to 5.25 V. Supply rail planning must account for these differences.
Which device is better suited for ECG or biopotential signal acquisition?
The ADS1198CPAG is specifically designed for biopotential applications, featuring integrated respiration impedance measurement, lead-off detection, and a flexible input multiplexer suited to ECG and EEG systems. The ADS114S06BIPBSR is a general-purpose precision ADC and does not include biopotential-specific features such as respiration impedance measurement.
Can the ADS114S06BIPBSR replace the ADS1198CPAG in an existing design without firmware changes?
No. The two devices differ in package, pinout, channel count, register map, and feature set. A replacement would require hardware redesign, PCB layout changes, and firmware modification to accommodate the different command structure and configuration registers.