Analog Devices Inc. ADSP-21160MKB-80

Overview

ADSP-21160MKB-80 from Analog Devices is a 32-bit SHARC® digital signal processor with SIMD architecture, 4 Mbits on-chip dual-ported SRAM, 80 MHz core instruction rate, and 400-ball PBGA package. It serves as the computational engine in high-fidelity audio processing, medical imaging reconstruction, and real-time radar signal conditioning systems.

For engineers reviewing the ADSP-21160MKB-80 datasheet, ADSP-21160MKB-80 pinout, ADSP-21160MKB-80 application, or ADSP-21160MKB-80 equivalent, key selection criteria include its 80 MHz instruction cycle time, 3.3 V I/O / 2.5 V core voltage, 12.5 ns instruction latency, dual 32-bit IEEE floating-point computation units, and glueless multiprocessing support for up to six processors.

Technical Context

The ADSP-21160MKB-80 implements a Super Harvard architecture with four independent buses enabling concurrent dual data fetch, instruction fetch, and zero-overhead I/O. Its dual computational elements (PEX and PEY) execute identical instructions on separate data streams under SIMD control via the PEYEN bit in MODE1.

Memory subsystem includes two 2M-bit dual-ported SRAM blocks supporting single-cycle independent access by core, I/O processor, and DMA-enabling simultaneous 4×32-bit transfers per cycle across PM/DM buses. The integrated I/O processor manages 14 zero-overhead DMA channels and supports TDM serial interfaces compliant with T1/E1 framing.

Key Specifications

Pinout & Package

ADSP-21160MKB-80 is housed in a 400-ball 27 mm × 27 mm PBGA package with RoHS-compliant lead-free finish. Ball pitch is 1.27 mm; thermal pad exposed on underside for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital signal processor applications.

Compared with ADSP-21160MKB-80, ADSP-21160NKB-100 delivers 25% higher instruction throughput and reduced power per MAC, while ADSP-21065LKSZ-210 offers higher single-thread clock speed but lacks SIMD parallelism and half the on-chip memory - making it suitable only for non-parallelizable, latency-critical control loops.

Availability

ADSP-21160MKB-80 is available at Aetrix Electronics and suitable for professional audio equipment, medical ultrasound systems, defense radar modules, and industrial motor drives requiring stable component supply over extended production lifecycles.

Supply support for ADSP-21160MKB-80 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.

The ADSP-21160MKB-80 belongs to the SHARC® family of 32-bit floating-point DSPs designed for computationally intensive, real-time signal processing in audio, imaging, and communications infrastructure where deterministic latency and high MIPS/Watt efficiency are critical.

FAQ

What is the maximum operating frequency of the ADSP-21160MKB-80?

The ADSP-21160MKB-80 operates at a maximum core instruction rate of 80 MHz, corresponding to a 12.5 ns instruction cycle time. This frequency is achieved using the on-chip PLL configured for a 4:1 multiplication ratio from a 20 MHz CLKIN source. Electrical characteristics specify this rating under 2.5 V core and 3.3 V I/O supply conditions at junction temperatures ≤ 85°C.

Does the ADSP-21160MKB-80 support SIMD execution, and how is it enabled?

Yes, the ADSP-21160MKB-80 supports single-instruction, multiple-data (SIMD) execution through its dual computational units (PEX and PEY). SIMD mode is enabled by setting the PEYEN bit in the MODE1 register. When active, both units execute the same instruction on independent data streams - doubling throughput for compatible algorithms such as FIR filtering and FFT butterfly operations.

How much on-chip memory does the ADSP-21160MKB-80 integrate, and what is its architecture?

The ADSP-21160MKB-80 integrates 4 Mbits of on-chip SRAM organized as two independent 2 Mbit dual-ported blocks. Each block supports simultaneous single-cycle access by the core processor, I/O processor, and DMA controller. Memory can be configured for 16-, 32-, 48-, or 64-bit word widths and supports 16-bit floating-point storage format to effectively double data capacity for coefficient tables and buffers.

What packaging and thermal specifications apply to the ADSP-21160MKB-80?

The ADSP-21160MKB-80 uses a 400-ball 27 mm × 27 mm PBGA package with 1.27 mm ball pitch and exposed thermal pad. Its absolute maximum junction temperature is 125°C, and recommended operating junction temperature is ≤ 85°C. Thermal design requires low-thermal-resistance PCB layout with solid copper planes under the thermal pad and ≥ 6 vias connecting to internal ground planes.

Can the ADSP-21160MKB-80 interface directly with external SDRAM or DDR memory?

No, the ADSP-21160MKB-80 does not support direct interface to SDRAM or DDR memory. Its external port is optimized for asynchronous SRAM, ZBT synchronous burst SRAM, and page-mode DRAM. For SDRAM/DDR interfacing, an external memory controller FPGA or bridge IC is required. The processor's programmable wait-state generation and bank-select decoding are tailored for simpler memory types with predictable access timing.