Electronic Design

Mixed-Signal DSP Implements Analog For Embedded Control

To meet the needs of emerging embedded control and signal-processing requirements in industrial process control, robotics, and demanding high-precision control systems, Analog Devices has launched a line of integrated mixed-signal DSPs.

The ADSP-2199x merges the C-programmable 160-MIPS, 16-bit, fixed-point ADSP-219x core with a high-resolution, high-speed analog-to-digital converter (ADC), a sample-and-hold amplifier, a precision voltage reference, and power-on-reset circuitry, all on the same CMOS chip.

On-chip peripherals include a pulse-width modulator (PWM) generator, incremental encoder interfaces, timers, serial communication ports, watchdog timers, and interrupt controllers. The on-chip ADC is an eight-channel, 14-bit, 20-Msample/s converter that boasts a 70-dB typical signal-to-noise ratio.

This family features two pin-for-pin members. The ADSP-21990 has 4 kwords of program RAM and 4 kwords of data RAM, and the ADSP-21991 has 32 kwords of program RAM and 8 kwords of data RAM. Supported by the supplier's CrossCore hardware and software development tools, the devices are fabricated in 0.25-µm CMOS. They come in 196-ball mini-BGAs and 176-pin TQFPs.

The ADSP-21990 is slated for production this quarter, and the ADSP-21991 is expected to go into production in the fourth quarter. In 10,000-piece lots, the ADSP-21990 costs $18.45, and the ADSP-21991 costs $21.95.

Analog Devices Inc., www.analog.com; (800) 262-5643.

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