ADUC7033BCPZ-8L

Overview

The ADUC7033BCPZ-8L is a precision automotive battery sensor integrating an ARM7TDMI microcontroller with dual-channel 16-bit Sigma-Delta ADCs. It features a dedicated current channel with programmable gain (1 to 512) and a voltage channel with an on-chip attenuator for direct 12 V battery connection. The device operates from a 3.5 V to 18 V supply, includes 96 kB Flash/EE memory, and supports LIN 2.0 communication. It is housed in a 48-lead LQFP package and specified for operation between -40°C and +115°C.

Feature Summary

• Dual-channel simultaneous sampling 16-bit Sigma-Delta ADCs with integrated digital comparators and current accumulator.
• Direct 12 V battery interface via buffered voltage channel with on-chip resistive attenuator.
• Integrated ARM7TDMI MCU core with 96 kB Flash/EE memory and LIN 2.0 slave support.
• On-chip precision voltage reference and temperature sensor options for high accuracy.

Applications

• Battery sensing and management systems for automotive applications
• Valve Regulated Lead Acid (VRLA) battery monitoring
• Electric vehicle power supply subsystems

Procurement Notes

Verify the specific suffix '8L' against the manufacturer's official ordering guide to confirm package type and temperature range variations. Ensure compatibility with automotive environmental standards required for the target application before finalizing procurement.

Selection Notes

Select this component when high-precision simultaneous current and voltage measurement is required directly from a 12 V automotive battery. The integrated LIN interface simplifies network integration, while the wide operating temperature range suits harsh automotive environments.

Part Context

This part belongs to the ADuC7033 series of integrated battery sensors. It combines analog acquisition capabilities with a standard ARM7TDMI processor, designed specifically for robust monitoring in automotive electrical systems where isolation and precision are critical.

Replacement Considerations

Consult the official datasheet for cross-reference information. Verify pinout compatibility and software register mapping if substituting with other members of the ADuC70xx family or competing automotive battery sensors.

FAQ

What is the maximum input voltage for the voltage channel?

The voltage channel can handle absolute input voltages up to 18 V and has an input voltage range of 0 to 28.8 V due to the internal resistive attenuator.

Does the device support LIN bus communication?

Yes, it includes a LIN 2.0-compatible slave interface via UART with hardware synchronization, supporting baud rates up to 20,000 bits/sec.

What is the resolution of the integrated ADCs?

The device features dual-channel, simultaneous sampling 16-bit Sigma-Delta ADCs with no missing codes across all update rates.