Configurable Impedance Network Analyzer & Potentiostat with Integrated Cortex M3 Core

The ADuCM350 is a configurable Impedance Converter and Potentiostat with current and voltage measurement capability for both Electrochemical sensors and Biosensors. It is a complete, coin cell powered, high precision, MCU integrated solution for portable device applications such as point-of-care diagnostics and body-worn devices for monitoring vital signs.

The ADuCM350 analog front end (AFE) features a 16-bit, precision, 160 kSPS analog-to-digital converter (ADC); 0.17% precision voltage reference; 12-bit, no missing codes digital-to-analog converter (DAC); and a reconfigurable ultralow leakage switch matrix. It has 4 voltage measurement channels, up to 8 current measurement channels and an impedance measurement DFT engine. The ADuCM350 also includes an ARM Cortex-M3-based processor, memory, and all I/O connectivity to support portable meters with display, USB communication, and active sensors. The ADuCM350 is available in a 120-lead, 8 mm × 8 mm CSPBGA and operates from −40°C to +85°C.

To support extremely low dynamic and hibernate power management, the ADuCM350 provides a collection of power modes and features, such as dynamic and software controlled clock gating and power gating. The AFE is connected to the ARM Cortex-M3 via an advanced high performance bus (AHPB) slave interface on the advanced microcontroller bus architecture (AMBA) matrix, as well as direct memory access (DMA) and interrupt connections.

APPLICATIONS

* Point-of-care diagnostics

* Body-worn devices for monitoring vital signs

* Amperometric, voltametric, and impedometric measurements

* Analog performance

* 160 kSPS, 16-bit, precision analog-to-digital converter (ADC)

* 4 dedicated voltage measurement channels

* 8 current measurement channels

* Impedance measurement engine

* High precision voltage reference

* Supply noise rejection filtering

* Ultralow leakage configurable switch matrix

* 12-bit digital-to-analog converter (DAC)

* Precision instrumentation amplifier control loop

* 6-channel CapTouch controller

* Temperature sensor

* Analog hardware accelerators

* Autonomous analog front-end (AFE) controller

* Independent sequencer for AFE functions

* Direct digital synthesizer (DDS)/arbitrary waveform generator

* Receive filters

* Complex impedance measurement (DFT) engine

* Processing

* 16 MHz ARM Cortex-M3 processor

* 384 kB of embedded flash memory

* 32 kB system SRAM

* 16 kB Flash configured EEPROM