The ZSSC1856 features two high-precision 18-bit Sigma/Delta ADCs with an on-chip voltage reference. Designed for ultra-low power consumption, the ZSSC1856 uses less than 100μA in Sleep Mode and comes in a PQFN32 5mm x 5mm package only 0.85mm high.“ZMDI’s goal is to enable our customers to deliver systems that address the demand for energy efficient solutions,” says Frank Schulze, ZMDI. “The ZSSC1856 Intelligent Battery Sensor effectively offers automotive, industrial and medical customers a smaller, high-resolution and less power consuming alternative to present battery power management offerings.”
Originally designed for automotive applications such as start/stop systems, the ZSSC1856 lends itself perfectly to industrial and medical systems that require precise battery state-of-health (SOH), state-of-charge (SOC) or state-of-function (SOF) monitoring, such as emergency lighting, uninterruptable power supplies, hospital equipment and alarm systems.
The ZSSC1856 is a dual-channel ADC with an embedded microcontroller. One of the two input channels measures the battery current IBAT via the voltage drop at the external shunt resistor. The second channel measures the battery voltage VBAT and the temperature. An integrated flash memory is provided for customer-specific software. The device communication interface supports LIN 1.3, 2.0 and 2.1 specifications, as well as SPI and I²C. During Sleep Mode (e.g., engine off), the system makes periodic measurements to monitor the discharge of the battery. Measurement cycles are software-controlled and include various wake-up conditions. The ZSSC1856 is optimized for ultra-low power consumption and draws only 100μA or less in this mode. The ZSSC1856 is AEC-Q100 qualified and specified for temperatures from -40°C to +125°C.
This product is priced at 5.48 USD/piece for 1k pieces.
Evaluation kits, application notes and samples are available.
- Smallest footprint in the industry: PQFN32 5mm x 5mm package
- Lowest power consumption without sacrificing performance
- 18-bit resolution for higher accuracy
