Analog Microcontrollers feature on-chip data conversion.

Press Release Summary:

Designed to boost control functions in tunable optical modules, Model ADuC7122 includes 32-bit ARM7TDMI processor core operating at 41.78 MHz with 8 KB on-chip SRAM, 128 KB on-chip EEPROM memory, and software-triggered in-circuit re-programmability. Model ADuC7023, intended for fixed frequency laser applications, offers 8 KB SRAM, 62 KB flash/EEPROM memory, and 19 general-purpose I/O pins. Both MCUs incorporate 12-bit ADCs and 12-bit DACs to minimize size of overall solution.

Original Press Release:

Precision Analog Microcontrollers Feature On-Chip Data Conversion to Simplify Optical Module Design

- New ADI ARM7 microcontrollers integrate more ADCs and DACs in smaller footprints to provide a highly integrated, programmable option for optical modules.

NORWOOD, Mass - Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, today introduced a pair of highly integrated precision analog microcontrollers featuring on-chip memory, data converters, and other analog peripherals that combine to deliver the highest level of programmability and smallest package size. Effective for digital diagnostics in optical transceivers and modules based on both fixed and tunable frequency lasers, the ADuC7023 and ADuC7122 precision analog microcontrollers use an ARM7 processor with up to 126 KB of flash memory to ensure the accurate control of optical drivers and diagnostics.

The new microcontrollers feature on-chip 12-bit ADCs (analog-to-digital converters) and DACs (digital-to-analog converters), which reduce the size of the overall solution by up to 75 percent compared to competing discrete solutions. The devices support interrupt nesting and up to 16 levels of interrupt priority, and retain DAC and GPIO outputs during a software or watchdog reset, which are of particular benefit to optical module designers.

ADuC7122 Analog Microcontroller Boosts Control Functions in Tunable Optical Modules

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. While competing devices use PWMs (pulse-width modulators) and lower performance ADCs to perform monitoring and control functions, the ADuC7122 microcontroller features a 14-channel, 12-bit, 1-MSPS SAR (successive-approximation register) ADC, 12 buffered 12-bit DACs, a programmable gain amplifier and an on-chip temperature sensor. This high level of precision component integration allows for the robust monitoring and control of key parameters in tunable optical modules, resulting in higher overall system performance. The integration and precision of the ADuC7122 eases the task for the system engineer, 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. All of this functionality is provided in a tiny 7 mm × 7 mm 108-ball BGA (ball grid array) package.

ADuC7023 Analog Microcontroller for Fixed Frequency Laser Applications

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. All of this functionality is provided in a tiny 5 mm × 5 mm 32-lead LFCSP (lead frame chip scale package).

Features and Pricing 
Product ADC DAC Memory Available Temp Price
Range Each

ADuC7122 13-ch 12 buff. 8 KB SRAM; NOW -10°C to $8.90
12-bit 12-bit 126 KB Flash +95°C

ADuC7023 12-ch 4 buff. 8 KB SRAM NOW -10°C to $3.65
12-bit 12-bit 62 KB Flash +125°C

Complementary components include the ADN2526 laser diode driver; ADP121 CMOS linear regulator; ADP2108 step-down DC-to-DC converter; ADP3050 switching regulator; and ADP3335 voltage regulator and ADIsimPower(TM) power management design tool.

For more information, visit: or For additional information on Analog Devices' analog microcontroller offerings, visit

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Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data-conversion and signal-conditioning technologies, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Celebrating over 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices' common stock is listed on the New York Stock Exchange under the ticker "ADI" and is included in the S&P 500 Index.

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