The ADS1194/6/8 are a family of multichannel, simultaneous sampling, 16-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator.
With its high levels of integration and exceptional performance, the ADS1194/6/8 family enables the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.
The ADS1194/6/8 have a flexible input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and lead-off detection. Additionally, any configuration of input channels can be selected for derivation of the right leg drive (RLD) output signal. The ADS1194/6/8 operate at data rates as high as 8kSPS, thereby allowing the implementation of software pace detection. Lead-off detection can be implemented internal to the device, either with a pull-up/pull-down resistor or an excitation current sink/source. Three integrated amplifiers generate the Wilson Center Terminal (WCT) and the Goldberger terminals (GCT) required for a standard 12-lead medical electrocardiogram (ECG).
Multiple ADS1194/6/8 devices can be cascaded in high channel count systems in a daisy-chain configuration.
Package options include a tiny 8mm × 8mm, 64-ball BGA and a TQFP-64. Both packages are specified over the temperature range of 0°C to +70°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | Low-Power, 8-Channel, 16-Bit Analog Front-End for Biopotential Measurements datasheet (Rev. C) | Nov 29, 2011 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | Mar 29, 2023 | |
| E-book | Fundamentals of Precision ADC Noise Analysis (Rev. A) | Jun 19, 2020 | ||
| Analog design Journal | How delta-sigma ADCs work, Part 1 (Rev. A) | Sep 19, 2016 | ||
| E-book | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | Mar 19, 2015 | ||
| User guide | TIPD111 Verified Design Reference Guide | Jun 18, 2013 | ||
| Analog design Journal | How delta-sigma ADCs work, Part 2 | Nov 9, 2011 | ||
| Application note | Improving Common-Mode Rejection Using the Right-Leg Drive Amplifier | Jul 6, 2011 | ||
| Application note | Thermal Noise Analysis in ECG Applications | May 3, 2011 | ||
| Application note | Respiration Rate Measurement Using Impedance Pneumography | Mar 1, 2011 | ||
| Application note | Analog Front-End Design for ECG Systems Using Delta-Sigma ADCs (Rev. A) | Apr 13, 2010 |
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TQFP (PAG) | 64 | Ultra Librarian |
| NFBGA (ZXG) | 64 | Ultra Librarian |
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