Specifications
| Type | Description |
|---|---|
| Part Number | ADS1298 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 64-ball BGA 8.00 mm x 8.00 mm; TQFP-64 10.00 mm x 10.00 mm |
| ADC Resolution | 24-bit; Delta-sigma ADC architecture |
| Number of Channels | 8 channels; ADS1298 and ADS1298R variants |
| ADC Sampling Type | Simultaneous sampling; Multichannel ADC operation |
| Programmable Gain | 1, 2, 3, 4, 6, 8, or 12; Built-in PGA per channel |
| Power Consumption | 0.75 mW/channel; Low-power operation |
| Input-Referred Noise | 4 uVPP; 150 Hz bandwidth, gain = 6 |
| Input Bias Current | 200 pA; Analog input bias current |
| Data Rate | 250 SPS to 32 kSPS; Output data rate range |
| Common-Mode Rejection Ratio | -115 dB; Channel performance |
| Analog Supply Voltage | 2.7 V to 5.25 V; AVDD, unipolar or bipolar supply operation |
| Digital Supply Voltage | 1.65 V to 3.6 V; DVDD supply operation |
| Internal Reference | Built-in; Integrated reference included |
| Internal Oscillator | Built-in; Integrated oscillator included |
| Serial Interface | SPI-compatible; Digital serial interface |
| Input Multiplexer | Flexible input mux per channel; Can connect to test, temperature, and lead-off detection signals |
| Lead-Off Detection | Integrated; Implemented with pullup/pulldown resistor or excitation current sink/source |
| Right Leg Drive Amplifier | Built-in; Any input channel configuration can derive RLD output signal |
| Wilson Central Terminal | Integrated amplifiers; Three integrated amplifiers generate WCT and Goldberger central terminals |
| Respiration Impedance Measurement | Integrated; ADS129xR versions only |
| Pace Detection | Digital pace detection capability; Supported by data rates up to 32 kSPS |
| Daisy-Chain Operation | Supported; Multiple ADS129x/ADS129xR devices can be cascaded for high channel count systems |
| Commercial Temperature Range | 0°C to 70°C; ADS129x BGA version |
| Industrial Temperature Range | -40°C to +85°C; ADS129xR BGA and ADS129x TQFP versions |
| Supported Medical Standards | AAMI EC11, EC13, IEC 60601-1, IEC 60601-2-27, IEC 60601-2-51; Supports systems meeting listed standards |
| Datasheet Status | request_only |
Product Overview
The ADS1298 is a Texas Instruments Signal_Chain analog front-end with eight 24-bit delta-sigma ADC channels and simultaneous sampling. Each channel includes a built-in programmable gain amplifier with gain settings of 1, 2, 3, 4, 6, 8, or 12. The output data rate range is 250 SPS to 32 kSPS, supporting digital pace detection capability at higher data rates.
Integrated signal-chain blocks include a built-in reference, built-in oscillator, SPI-compatible serial interface, flexible per-channel input mux, lead-off detection, right leg drive amplifier, and amplifiers for Wilson Central Terminal and Goldberger central terminals. ADS129xR versions also integrate respiration impedance measurement.
Package options are 64-ball BGA 8.00 mm x 8.00 mm and TQFP-64 10.00 mm x 10.00 mm. Supply ranges are 2.7 V to 5.25 V for AVDD and 1.65 V to 3.6 V for DVDD. The device is specified with 0.75 mW/channel power consumption, 4 uVPP input-referred noise at 150 Hz bandwidth and gain 6, 200 pA input bias current, and -115 dB CMRR.
Key Features
- 8-channel 24-bit delta-sigma ADC architecture
- Simultaneous sampling across multichannel ADC operation
- Programmable gain settings from 1 to 12
- 250 SPS to 32 kSPS output data rate
- 0.75 mW per channel power consumption
- 4 uVPP input-referred noise at gain 6
- Built-in reference and internal oscillator
- SPI-compatible digital serial interface
- Integrated lead-off detection with resistor or current methods
- Built-in right leg drive amplifier
- Integrated WCT and Goldberger terminal amplifiers
- Daisy-chain operation for higher channel count systems
Typical Applications
- Multichannel biopotential measurement systems
- ECG front-end signal acquisition
- Pace detection enabled systems
- Respiration impedance measurement systems
- Medical systems targeting AAMI EC11
- Medical systems targeting IEC 60601-2-27
- High channel count cascaded acquisition systems
Procurement Notes
When requesting a quote for ADS1298, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of converter architecture does ADS1298 use?
ADS1298 uses a 24-bit delta-sigma ADC architecture with simultaneous sampling across eight channels. Each channel includes a programmable gain amplifier with gain settings of 1, 2, 3, 4, 6, 8, or 12.
What data rates are supported by ADS1298?
The ADS1298 output data rate range is 250 SPS to 32 kSPS. The extracted datasheet facts also note digital pace detection capability supported by data rates up to 32 kSPS.
Which package options are listed for ADS1298?
The listed package options are 64-ball BGA measuring 8.00 mm x 8.00 mm and TQFP-64 measuring 10.00 mm x 10.00 mm. Temperature range applicability differs by variant and package.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.