Part A
ADS1198CPAG
Texas Instruments
- Lifecycle
- Active
- Stock
- 3254 PCS
- Package
- TQFP-64
- Series
- Acquisição de dados - Front End analógico (AFE)
Replacement verdict
Compatible functional replacement candidate
The ADS1196CPAGR is a functional replacement candidate for the ADS1198CPAG within the same Texas Instruments ADS119x family, sharing an identical TQFP-64 package, pinout, supply architecture, and SPI interface. The primary distinction is the reduced channel count (6 vs. 8) and lower maximum data rate (8 kSPS vs. 16 kSPS), so the substitution is viable only where the additional two channels and higher throughput of the ADS1198CPAG are not required. Designers should confirm channel-count sufficiency and sampling-rate headroom before adopting the ADS1196CPAGR as a drop-in alternative.
Channel Count
Not compatible
Package and Pinout
High match
Maximum Data Rate
Validation required
Supply Voltage and Interface
High match
Parts at a glance
Part B
ADS1196CPAGR
Texas Instruments
- Lifecycle
- Active
- Stock
- 9707 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 | ADS1198CPAG | ADS1196CPAGR | Why it matters |
|---|---|---|---|
| Number of input channels | 8 | 6 | Determines how many simultaneous biopotential/ECG signals can be acquired; a direct functional difference affecting system channel count. |
| Resolution | 16 bit | 16 bit | Sets the ADC quantization precision; identical resolution means comparable measurement fidelity per channel. |
| Data rate (max) | 8 kSPS | 8 kSPS | Maximum sampling throughput per channel; identical rates support the same signal bandwidth requirements. |
| 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), 1.8 V to 3.6 V (digital) | Defines compatible power rails; identical ranges allow drop-in use in the same power architecture. |
| Interface | SPI | SPI | Host communication protocol; identical SPI interface simplifies firmware and hardware reuse. |
| Integrated features | PGA, internal reference, lead-off detection, respiration measurement, pace detection | PGA, internal reference, lead-off detection, respiration measurement, pace detection | On-chip signal conditioning and ECG-specific functions reduce external component count; identical feature sets support equivalent system design. |
| Package | 64-TQFP | 64-TQFP | Footprint and pin layout; matching package enables PCB layout compatibility, though the differing channel count affects pin usage. |
| Operating temperature range | 0°C to 70°C | 0°C to 70°C | Defines environmental operating limits; identical commercial temperature ranges suit the same application environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1198CPAG | ADS1196CPAGR |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Number of Channels | 8 | 6 |
| Power (Watts) | 8.2 mW | 6.9 mW |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 1.65V ~ 3.6V | 1.65V ~ 3.6V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADS1198CPAG and ADS1196CPAGR?
The ADS1198CPAG is an 8-channel, 16-bit delta-sigma analog front-end (AFE) for biopotential measurements, while the ADS1196CPAGR is a 6-channel, 16-bit delta-sigma AFE in the same family. Both integrate programmable gain amplifiers, internal reference, oscillator, and SPI interface, but the ADS1198 provides two additional input channels. The CPAG and CPAGR suffixes denote TQFP-64 package ordering variants (tray vs. tape-and-reel).
Are the ADS1198CPAG and ADS1196CPAGR pin-compatible?
Both devices are offered in a 64-pin TQFP package (PAG/CPAGR suffix), and they share the same pinout family per the Texas Instruments ADS119x datasheet. However, the ADS1196 has fewer active input channels, so unused channel pins on the ADS1198 footprint should be handled per the datasheet when substituting. Always verify against the specific datasheet revision before layout substitution.
What is the maximum data rate of these AFEs?
Both the ADS1198 and ADS1196 support programmable output data rates up to 8 kSPS per channel via the internal programmable gain amplifier and delta-sigma modulator settings, as specified in the Texas Instruments ADS119x datasheet. Data rate is configured through the SPI-programmable registers.
Do the ADS1198CPAG and ADS1196CPAGR include an internal reference and oscillator?
Yes. Both devices integrate an on-chip reference and an internal oscillator, reducing external component count for biopotential acquisition systems. External reference and clock options are also supported per the datasheet.
What supply voltages do the ADS1198CPAG and ADS1196CPAGR require?
Both devices operate from an analog supply (AVDD) and a digital supply (DVDD) as defined in the Texas Instruments ADS119x datasheet, with unipolar or bipolar analog supply configurations supported. Refer to the datasheet's recommended operating conditions for exact voltage ranges before design.
What interface do these AFEs use to communicate with a host controller?
Both the ADS1198CPAG and ADS1196CPAGR use an SPI-compatible serial interface for register configuration and data readout, as documented in the Texas Instruments ADS119x datasheet. This allows connection to most microcontrollers and DSPs.
What are typical applications for the ADS1198CPAG and ADS1196CPAGR?
These AFEs are intended for biopotential measurement systems such as ECG, EEG, and EMG equipment, as well as patient monitoring and portable medical instrumentation, per Texas Instruments documentation. The ADS1198's 8 channels suit higher-lead-count systems, while the ADS1196's 6 channels suit more compact designs.