Data Acquisition System Basis Chip

The ZSSC1750 is a System Basis Chip (SBC) with a dual-channel ADC for battery sensing/management in automotive, industrial, and medical systems. The ZSSC1750 features an SPI interface. 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. By simultaneously measuring VBAT and IBAT, it is possible to determine dynamically the internal resistance of the battery, Rdi, which is correlated with the state-of-health (SOH) of the battery. By integrating IBAT, it is possible to determine the state-of-charge (SOC) and the state-of-function (SOF) of the battery. During Sleep Mode, the system makes periodic measurements to monitor the discharge of the battery. Measurement cycles are controlled by user software and include various wake-up conditions. The ZSSC1750 is optimized for ultra-low power consumption drawing only 60μA or less in this mode.

Features

  • Two high-precision 24-bit sigma-delta ADCs (18-bit with no missing codes)
  • Sample rate: 1Hz to 16kHz
  • On-chip voltage reference (5ppm/K typical)
  • Current channel IBAT offset error: ≤ 10mA
  • Current channel IBAT resolution: ≤ 1mA
  • Current channel programmable gain: 4 to 512
  • Current channel maximum differential input stage input range: ±300mV
  • Voltage channel input range: 4 to 28.8V
  • Voltage channel accuracy: ±60ppm full-scale range = 1.73mV
  • Temperature channel external temperature sensor (NTC)
  • Temperature channel factory-calibrated internal temp. sensor: ±2°C
  • LIN 2.1/SAE J2602-1 transceiver
  • Normal Mode typical current consumption: 12mA
  • Sleep Mode typical current consumption: ≤ 60μA

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Range Carrier Type Buy Sample
ZSSC1750EA3R Active NLG36 VFQFPN 36 -40 to 125°C Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
ZSSC175X Short-form Datasheet Short Form Datasheet PDF 155 KB Apr 19, 2016
ZSSC175X Datasheet Datasheet PDF 1.37 MB Apr 19, 2016
Other
IDT CAD Altium Libraries for AID Products Rev 20160819 PCB Design Files ZIP 1.20 MB Aug 18, 2016
Automotive Solutions Overview 简体中文 Overview PDF 2.79 MB Mar 8, 2016

Software & Tools

Title Other Languages Type Format File Size Date
ZSSC175x Evaluation Software Release 4.0.14 (zip) Software ZIP 7.68 MB Aug 22, 2016

Evaluation Boards

Part Number Title Sort ascending
ZSSC175xKIT Evaluation Kit for ZSSC175x