ADS1296CZXGT

低功耗， 8通道， 24位模拟前端的生物电位测量 Low-Power, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements

The ADS1294, ADS1296, ADS1298 ADS129x and ADS1294R, ADS1296R ADS1298R ADS129xR are a family of multichannel, simultaneous sampling, 24-bit, delta-sigma ΔΣ analog-to-digital converters ADCs with built-in programmable gain amplifiers PGAs, internal reference, and an onboard oscillator. The ADS129x and ADS129xR incorporate all of the features that are commonly required in medical electrocardiogram ECG and electroencephalogram EEG applications. With high levels of integration and exceptional performance, the ADS129x and ADS129xR enables the development of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS129x and ADS129xR have a flexible input multiplexer mux 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 ADS129x and ADS129xR operate at data rates as high as 32 kSPS, thereby allowing the implementation of software pace detection. Lead-off detection can be implemented internal to the device, either with a pullup or pulldown resistor, or an excitation current sink or source. Three integrated amplifiers generate the Wilson central terminal WCT and the Goldberger central terminals GCT required for a standard 12-lead ECG. The ADS129xR versions include a fully integrated, respiration impedance measurement function. Multiple ADS129x and ADS129xR devices can be cascaded in high channel count systems in a daisy-chain configuration.

Package options include a tiny 8-mm × 8-mm, 64-ball BGA, and a TQFP-64. The ADS129x BGA version is specified over the commercial temperature range of 0°C to 70°C. The ADS129xR BGA and ADS129x TQFP versions are specified over the industrial temperature range of –40°C to +85°C.