Date: 25/01/2010

ARM 7 based MCUs from ADI with built-in precision analog and mixed signal functions

ADI has introduced the ADuC7023 and ADuC7122, a new high integrated precision analog microcontrollers that combine on-chip memory, data converters, and other analog peripherals to deliver the high level of programmability and small package size. The ADuC7023 and ADuC7122 MCUs use an ARM7 processor with up to 126 KB of flash memory to ensure the accurate control of optical drivers and diagnostics.

The key features of the ADuC7023 MCU are,

Multichannel, 12-bit, 1 MSPS ADC, Up to 12 ADC channels
Fully differential and single-ended modes
0 V to VREF analog input range
12-bit voltage output DACs up to 4 DAC outputs available
On-chip voltage reference
On-chip temperature sensor
Voltage comparator

For fixed frequency optical transceivers in SFP, SFP+, XFP and GPON, the ADuC7023 offers 8 KB of SRAM, 62 KB of flash/EEPROM memory, 19 general-purpose I/O (input/output) pins, three general-purpose timers and 16 programmable-logic elements. Analog peripherals include a 12-channel, 12-bit, 1-MSPS ADC, a 16-bit, 6-channel PWM and four buffered 12-bit DACs.

The suggested applications for the ADuC7023 MCU are optical networking, industrial control and automation systems, smart sensors, precision instrumentation, and base station systems.

The key features of the ADuC7122 MCU are,

13 external channel, 12-bit, 1 MSPS ADC, 2 channels with programmable gain
Fully differential and single-ended modes
0 V to VREF analog input range
12 × 12-bit voltage output DACs
On-chip voltage reference of 1.2 V/2.5 V
Buffered output reference sources for use with external circuits
On-chip temperature sensor

The ADuC7122 includes a 32-bit ARM7TDMI processor core operating at 41.78 MHz with 8 KB (kilobytes) of on-chip SRAM and 128 KB of on-chip EEPROM memory with software-triggered in-circuit re-programmability. The integration and precision of the ADuC7122 MCU eases the task, while versatile programmability allows multiple systems to use the same component.

The ADuC7122 also features five timers, including a wake-up timer and watchdog timer, as well as two I²C interfaces, one SPI, one UART and 32 GPIO signal pins that can be independently configured as inputs, outputs or open drain.

Features and Pricing:
Product ADC DAC Memory Available Temp
Range Price Each
Per 1,000
ADuC7122 13-ch 12-bit ADC 12 buff. 12-bit DAC 8 KB SRAM;
126 KB Flash EE NOW -10°C to +95°C $8.90
ADuC7023 12-ch 12-bit ADC 4 buff. 12-bit DAC 8 KB SRAM;
62 KB Flash EE NOW -10°C to +125°C $3.65


Package:
ADuC7023: 5 mm × 5 mm 32-lead LFCSP package
ADuC7122: 7 mm × 7mm 108-ball BGA package

For more details visit www.analog.com