ECG 3-in-1 Sensor Solution based on Zettasensing ZSBM8000

Overview

The ZSBM8000 is a highly integrated, high-performance analog front-end (AFE) chip. It supports blood oxygen (SpO2) and HRV measurement via PPG signals and includes a dedicated ECG measurement channel. With flexible, configurable operating modes, it is ideal for high-end smartwatches, fitness trackers, single-lead ECG monitors, PTT-based (Pulse Transit Time) blood pressure measurement, and multi-parameter patient monitors.

The ZSBM8000 contains an independent ECG channel with its own high-precision ADC, configurable for both two-electrode and three-electrode modes, and supports AC and DC lead-off detection. The photoelectric channel includes a separate high-precision ADC, supports 4 differential or 8 single-ended photodiode inputs with reverse bias, and features 12 programmable constant-current LED drivers with a maximum output of 240mA each.

Solution Advantages

High-Performance Photoelectric Measurement Front-End

Available in multiple package options (including ultra-small packages)¹ to suit various application needs.

• WLCSP-16 Ball (1.58x1.58mm): Ideal for space-constrained wearable devices.
• QFN-20 (3x3mm): Easy to manufacture.
• OQFN-20: A transparent QFN-20 package with an integrated on-chip photodiode, suitable for transmissive applications.
• QLGA-10: A dual-cavity optical LGA package integrating multi-wavelength LEDs and an on-chip photodiode, perfect for applications with strict space requirements.

Independent ECG Channel

• 129dB dynamic range (receive chain, single sample)
• Configurable sampling rate from 0.002Hz to 16KHz (single time slot)
• High-precision ADC: 16-bit output in ultra-low power mode, 24-bit output in high-performance mode²
• Independent high-precision ECG ADC
• 20GΩ high input impedance
• Supports +/-500mV differential input
• Common-Mode Rejection Ratio (CMRR) of 129dB (in three-electrode mode)
• Integrated Right Leg Drive (RLD) amplifier

Operating Temperature Range

Supports a wide operating temperature range from -40°C to 85°C.

About Zettasensing

Beijing Zettasensing Technology Co., Ltd. is an integrated circuit company specializing in the R&D and application of mid-to-high-end sensor chips. We work closely with renowned chip manufacturing, packaging, and testing partners to provide high-performance sensor solutions and a reliable chip supply to both domestic and international system integrators.