Overview
Description
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
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 1.55 MB | |
| Guide | 7Z 1.21 MB | |
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Design & Development
Software & Tools
Boards & Kits
Evaluation
ZSSC175xKIT
Not Recommended for New Designs
Evaluation Kit for ZSSC175x
The ZSSC175xKIT Evaluation Kit provides the hardware needed for configuration, calibration and evaluation of the ZSSC1750 and ZSSC1751 Data Acquisition System Basis ICs. The only difference between these two ICs is that the ZSSC1750 also includes a LIN transceiver. The user's PC can communicate...
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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