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ADI chip integrates DSP core, 14-bit ADC

Posted: 22 Feb 2002 ?? ?Print Version ?Bookmark and Share

Keywords:analog devices? adi? dsp? digital signal processor? digital signal processing?

Leveraging its digital signal processing and mixed-signal expertise, Analog Devices Inc. has integrated its ADSP-219X fixed-point DSP and a 20MSa/s, 14-bit ADC into a single chip built on a 0.25?m process.

Through variations in the amount and type of on-chip memory and peripherals, the company's ADSP-2199X family of devices will target applications ranging from motor control to optical networking.

The mixed-signal DSP combo is going after a portion of the embedded control/signal-processing market that ADI estimates will rise from a little over $100 million in 2001 to over $1 billion in 2004. Those figures are derived from data from iSuppli, Cahners In-Stat Group and Gartner Group.

"With the 2199X, we're basically taking our [219X] DSP cores, combining those with state-of-the art development tools and high-performance analog to create mixed-signal DSP solutions and components for a number of embedded control and embedded signal-processing applications," said Finbarr Moynihan, product line manager for ADI's mixed-signal DSP products. Other applications include intelligent sensor-control, power control, and industrial automation, the company said.

"We also see great potential in test and measurement, servos, robotics and sensors, all driven by the need for high-resolution analog and more MIPS on the DSP side," said Moynihan. "This is the start of a whole family that will target these needs."

Moynihan said ADI chose the 16-bit 219x core because its 160MHz/160MIPS capability is projected to increase to 300MHz/300MIPS performance. It is also code-compatible with ADI's existing motor-control products, he said. "Also, as a fixed-point DSP core, it has the right level of scalability across our target applications," said Moynihan.

The 8-channel A/D core, with an SNR of 70dB, is actually a standard ADI part that was migrated from a 0.35?m process to allow for its integration with the 219X.

The part's breakthrough is its integration of a high-precision, high-speed ADC on the same substrate as a DSP core, Moynihan said. "For this, we had to leverage all of ADI's expertise in analog and mixed-signal design to reduce noise," he said.

The first two devices in the family are the 21990 and 21991. The 21990 has 4Kwords of program RAM, 4Kwords of data RAM and an external memory address space of 1Mword. The pin-compatible 21991 has 32Kwords of program RAM and 8Kwords of data RAM. Both are supported by the company's Crosscore hardware and software development tools.

The 21990 is sampling now, with production slated for the second quarter. It is priced at $18.25 each in 10,000 units. The 21991 will sample in the third quarter, with production set for the fourth quarter. Pricing has been set at $21.95 each in quantities of 10,000. Each is packaged in a 196-ball, mini-BGA or a 176-pin TGF.

Patrick Mannion

EE Times

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