AFE918ABGA64

The AFE918 is a multi-channel, simultaneous sampling 16-bit Δ-Σ analog-to-digital converter (ADC) series, incorporating a programmable gain amplifier (PGA), internal reference, and on-board oscillator. The AFE91x encompasses all the functionalities typically required for medical electrocardiogram (ECG) and electroencephalogram applications. With its high integration and exceptional performance, the AFE91x enables the development of scalable medical instrument systems with significantly reduced size, power consumption, and overall cost. Each channel of the AFE91x features a flexible input multiplexer (mux), which can be independently connected to internally generated signals for testing, temperature, and lead-off detection. Additionally, any configuration of the input channels can be used to generate the right leg drive (RLD) output signal. Lead-off detection is internally implemented through pull-up/pull-down resistors or excitation current sinks/sources. Three integrated amplifiers are utilized to generate the Wilson Central Terminal (WCT) necessary for standard 12-lead ECG. Multiple AFE91x devices can be connected in a daisy-chain configuration in high-channel-count systems. The package is a compact 8mm × 8mm, 64-ball BGA. The BGA version is rated for industrial temperatures ranging from 0°C to +70°C.