Analog Devices Inc. ADSP-2195MBCA-140

Overview

ADSP-2195MBCA-140 from Analog Devices is a 160 MIPS fixed-point DSP microcomputer with dual 40-bit accumulators, 32K words of on-chip RAM (16K × 24-bit program RAM + 16K × 16-bit data RAM), and 16K words of on-chip 24-bit ROM. It features three full-duplex multichannel serial ports compliant with H.100, two SPI-compatible ports, one UART, and a 16-bit host port - all supporting DMA. It targets real-time voice processing, telecom infrastructure, and embedded audio systems.

For engineers reviewing the ADSP-2195MBCA-140 datasheet, ADSP-2195MBCA-140 pinout, ADSP-2195MBCA-140 application, or ADSP-2195MBCA-140 equivalent, key selection criteria include instruction cycle time (6.25 ns), on-chip memory configuration (24-/16-bit RAM split), PLL programmability (1×–32× multiplication), 144-lead LQFP package compatibility, and H.100 hardware companding support.

Technical Context

The ADSP-2195MBCA-140 implements a pipelined Harvard architecture with three independent computational units (ALU, MAC, barrel shifter), two 16-bit DAGs with 8-bit page registers for 24-bit addressing, and a zero-overhead loop sequencer. Its unified memory space supports simultaneous dual-operand fetches via transparent instruction cache and flexible address generation.

Peripherals are tightly integrated: three SPORTs each support 128-channel TDM and A-law/μ-law companding in hardware; the external memory interface provides 22-bit addressing, configurable 8-/16-bit bus width, and four user-programmable memory banks with independent waitstate logic; power management includes four low-power modes (Idle, Power-down Core, Power-down Core/Peripherals, Power-down All).

Key Specifications

Pinout & Package

ADSP-2195MBCA-140 is housed in a 144-lead Low-Profile Quad Flat Package (LQFP) with 0.5 mm pitch, 20 mm × 20 mm body size, and 1.4 mm maximum height. Pin functions are defined per Analog Devices' Preliminary Technical Data Rev. PrA (September 2001), pages 58–66.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-point DSP applications.

Compared with ADSP-2195MBCA-140, ADSP-21992SBSTZ-1A trades voice-specific peripherals for networking features, while TMS320VC549PGE offers lower cost but requires complete firmware rework and external companding - neither matches the balanced integration of 160 MIPS, H.100 SPORTs, and 24-bit ROM in ADSP-2195MBCA-140.

Availability

ADSP-2195MBCA-140 is available at Aetrix Electronics and suitable for voice gateway systems, telecom line card processing, industrial audio analytics, and embedded speech recognition edge nodes requiring stable component supply and long-term industrial lifecycle support.

Supply support for ADSP-2195MBCA-140 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 leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.

The ADSP-219x family was designed specifically for real-time voice and audio signal processing in telecom infrastructure, offering optimized instruction set extensions, hardware companding, and multi-serial-port integration unmatched in prior generations.

FAQ

What is the maximum operating frequency of the ADSP-2195MBCA-140?

The ADSP-2195MBCA-140 achieves sustained 160 MIPS performance at a 6.25 ns instruction cycle time. Its internal core clock is derived from a programmable PLL that multiplies an external CLKIN signal by factors from 1× to 32×, enabling full-speed operation from low-frequency crystals (e.g., 5 MHz input yields 160 MHz core clock). This specification is confirmed in the Preliminary Technical Data Rev. PrA, page 1.

Does the ADSP-2195MBCA-140 support hardware A-law and μ-law companding?

Yes, the ADSP-2195MBCA-140 supports hardware A-law and μ-law companding on all three serial ports (SPORT0–SPORT2), as explicitly stated in the "ADSP-2195 DSP FEATURES" section (page 2) and functional block diagram notes. This capability operates inline during data transfer, eliminating the need for software-based companding and reducing CPU load in voice applications.

What memory configuration does the ADSP-2195MBCA-140 provide on-chip?

The ADSP-2195MBCA-140 integrates 32K words of on-chip SRAM: 16K words × 24-bit configured as program RAM and 16K words × 16-bit as data RAM. It also includes 16K words × 24-bit on-chip mask-programmable ROM. This split supports simultaneous instruction and data access with optimal bit-width alignment for DSP algorithms, per General Description (page 4) and Memory Architecture (page 6).

Is the ADSP-2195MBCA-140 pin-compatible with other ADSP-219x variants?

The ADSP-2195MBCA-140 uses a 144-lead LQFP package identical in footprint and pinout to other ADSP-219x LQFP variants (e.g., ADSP-2191MBCA-133), as confirmed by the "ADSP-2195 144-Lead LQFP Pinout" (page 58) and Ordering Guide (page 68). However, electrical and functional differences (e.g., memory size, peripheral enablement) require design validation per specific variant datasheet.

What power management modes does the ADSP-2195MBCA-140 support?

The ADSP-2195MBCA-140 supports four low-power modes: Idle Mode (core clocks halted, peripherals active), Power-down Core Mode (core powered down, peripherals and memory retained), Power-down Core/Peripherals Mode (core and peripherals powered down, memory retained), and Power-down All Mode (full chip retention). These are detailed in the "Low Power Operation" section (page 13) and enable sub-mA standby current in battery-operated voice endpoints.