ADSP-21990 Series

High-Performance Mixed-Signal DSP, 160 MHz, 4K Words Program Memory RAM

Catalog

High-Performance Mixed-Signal DSP, 160 MHz, 4K Words Program Memory RAM

Part	Voltage - I/O	Clock Rate	Non-Volatile Memory	On-Chip RAM	Supplier Device Package	Mounting Type	Type	Voltage - Core	Operating Temperature [Max]	Operating Temperature [Min]	Interface	Package / Case
Analog Devices ADSP-21990BSTZ	3.3 V	160 MHz	External	20 kB	176-LQFP (24x24)	Surface Mount	Fixed Point	2.5 V	85 °C	-40 °C	SPI SSP	176-LQFP
Analog Devices ADSP-21991BBCZ	3.3 V		External	112 kB	196-MBGA (15x15)	Surface Mount	Fixed Point	2.5 V	85 °C	-40 °C	SPI SSP	196-BGA CSPBGA

Catalog

High-Performance Mixed-Signal DSP, 160 MHz, 4K Words Program Memory RAM

Key Features

• 160 MHz, ADSP-219x DSP Core

• 8-Channel, 14-Bit, 20 MSPS ADC with On-Chip Voltage Reference

• 4K Words Program Memory RAM

• 4K Words Data Memory RAM

• Three-Phase PWM Generation Unit with additional Dual Auxiliary PWM Outputs

• External Memory Interface (to 1 MWord)

• Incremental Encoder Interface Unit

• Three 32-Bit, General Purpose Timers

• 16-Bit General Purpose Flag I/O Port

• Synchronous Serial (SPORT) & SPI Communications Port

Description

The ADSP-21990 is the first high-performance mixed signal DSP product from ADI. The ADSP-21990 integrates a 160 MHz, 16-bit, ADSP-219x DSP core and an 8-channel, 14-bit, 20 MSPS ADC (with dual sample-and-hold amplifiers for simultaneous sampling). Additional mixed-signal integration includes a precision on-chip voltage reference, and a power-on-reset (POR) circuit. Various control peripherals are provided for single-chip solutions for embedded control and signal processing applications.