AFE958ABGA64

The AFE958 (AFE95x) is a series of multi-channel, simultaneous sampling, 24-bit delta-sigma analog-to-digital converters (ADCs), featuring a programmable gain amplifier (PGA), an internal reference, and an onboard oscillator. The AFE95x integrates all the functions typically required for medical electrocardiogram (ECG) and electroencephalogram applications. With its high level of integration and exceptional performance, the AFE95x enables the development of scalable medical instrumentation systems with significantly reduced size, lower power consumption, and overall cost. Each channel of the AFE95x includes a flexible input multiplexer (MUX) that can independently connect to internally generated signals for testing, temperature monitoring, and lead-off detection. Additionally, the configuration of any input channel can be chosen to generate the right leg drive (RLD) output signal. The AFE95x operates at data rates up to 64kSPS, facilitating software-based pacemaker detection. Lead-off detection can be implemented internally through pull-up/pull-down resistors or excitation current sinks/sources. Three integrated amplifiers are used to generate the Wilson Central Terminal (WCT) required for standard 12-lead ECGs. Multiple AFE95x devices can be connected in a daisy-chain configuration in high-channel-count systems. The device is available in a compact 8mm × 8mm, 64-ball BGA package. The BGA version is rated for industrial temperature ranges from -40°C to +85°C.