Integrated Precision Battery Sensor for Automotive

The ADuC7034 is a complete, system solution for battery monitoring in 12 V automotive applications. The device integrates all of the required features to precisely and intelligently monitor, process, and diagnose 12 V battery parameters including battery current, voltage and temperature over a wide range of operating conditions.

APPLICATIONS

* Battery sensing/management for automotive systems

* Dual channel, simultaneous sampling, 16-bit Σ-Δ ADC

* Programming ADC throughput: 1 Hz to 8 kHz

* On-chip 5 ppm/°C reference voltage source

* Current channel

Fully differential, buffered input

Programmable gain: 1 to 512

ADC input range: −200 mV to +300 mV

Digital comparator with built-in current accumulator function

* Voltage channel

Buffered, On-chip attenuator, suitable for 12V battery input

* Temperature channel

External and on-chip temperature sensor solution

* 16-bit/32-bit RISC architecture ARM7TDMI® core

* 20.48 MHz PLL with programmable divider

* PLL input source

On-chip precision oscillator

On-chip low-power oscillator

External (32.768 kHz) clock crystal