The ADS1299-4, ADS1299-6, and ADS1299 devices are a family of four-, six-, and eight-channel, low-noise, 24-bit, simultaneous-sampling delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator. The ADS1299-x incorporates all commonly-required features for extracranial electroencephalogram (EEG) and electrocardiography (ECG) applications. With its high levels of integration and exceptional performance, the ADS1299-x enables the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.
The ADS1299-x has 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 patient bias output signal. Optional SRB pins are available to route a common signal to multiple inputs for a referential montage configuration. The ADS1299-x operates at data rates from 250 SPS to 16 kSPS. Lead-off detection can be implemented internal to the device using an excitation current sink or source.
Multiple ADS1299-4, ADS1299-6, or ADS1299 devices can be cascaded in high channel count systems in a daisy-chain configuration. The ADS1299-x is offered in a TQFP-64 package specified from –40°C to +85°C.
| Part number | Order | Resolution (Bits) | Sample rate (Max) (kSPS) | Number of input channels | Interface | Operating temperature range (C) | Package Group | Approx. price (US$) | Power consumption (Typ) (mW) | Package size: mm2:W x L (PKG) | Architecture | Input type | Multi-channel configuration | Reference mode | Features | Input range (Max) (V) | Input range (Min) (V) | Analog voltage AVDD (Min) (V) | Analog voltage AVDD (Max) (V) | Digital supply (Min) (V) | Digital supply (Max) (V) | SNR (dB) | THD (Typ) (dB) | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ADS1299 |
|
24 | 16 | 8 | SPI | -40 to 85 | TQFP | 64 | 36.00 | 1ku | 41 | 64TQFP: 144 mm2: 12 x 12 (TQFP | 64) | Delta-Sigma | Differential | Simultaneous Sampling |
Ext
Int |
Daisy-Chainable
GPIO Oscillator PGA |
5.25 | 0 | 4.75 | 5.25 | 1.8 | 3.6 | 121 | -99 | Catalog |
| ADS1299-4 |
|
24 | 16 | 4 | SPI | -40 to 85 | TQFP | 64 | 18.00 | 1ku | 5 | 64TQFP: 144 mm2: 12 x 12 (TQFP | 64) | Delta-Sigma | Differential | Simultaneous Sampling |
Ext
Int |
Daisy-Chainable
GPIO Oscillator PGA |
5.25 | 0 | 4.75 | 5.25 | 1.8 | 3.6 | 121 | -99 | Catalog |
| ADS1299-6 |
|
24 | 16 | 6 | SPI | -40 to 85 | TQFP | 64 | 27.00 | 1ku | 5 | 64TQFP: 144 mm2: 12 x 12 (TQFP | 64) | Delta-Sigma | Differential | Simultaneous Sampling |
Ext
Int |
Daisy-Chainable
GPIO Oscillator PGA |
5.25 | 0 | 4.75 | 5.25 | 1.8 | 3.6 | 121 | -99 | Catalog |
