The TDA755X family is a high performance, fully programmable 24-bit, 50 MIPS Digital Signal Processor (DSP), designed to support several speech and audio applications, such as Automatic Speech Recognition, Speech Synthesis, Speaker Verification, Echo and Noise Cancellation. It offers an effective solution for this kind of applications because of the A/D and D/A converters and the big amount of memory integrated on chip.
The TDA7550‑TDA7553 family is a 24‑bit, 50 MIPS digital signal processor designed for speech and audio applications such as automatic speech recognition, speaker verification and echo cancellation. It integrates a stereo 16‑bit sigma‑delta ADC/DAC, up to 16 Kwords of program ROM and 16 Kwords of data RAM, and offers programmable codec sample rates from 4 kHz to 48 kHz.
The device is supplied in an 80‑pin TQFP package (0.65 mm pitch) and operates over an automotive temperature range (‑40 °C to +85 °C). It provides a 2‑wire C‑bus or SPI serial interface for external control and an external memory interface (EMI) supporting up to 4 Mbytes of external flash, SRAM or DRAM.
| DSP core word length | 24‑bit |
|---|---|
| DSP core performance | 50 MIPS (50 MHz) |
| Program ROM size | up to 16 Kwords |
| Data RAM size | up to 16 Kwords |
| Integrated ADC/DAC | Stereo 16‑bit sigma‑delta |
| Codec sample rate | 4 kHz – 48 kHz (programmable) |
| Operating temperature range | -40 °C to +85 °C |
| Package | 80‑pin TQFP, 0.65 mm pitch |
| External interface | 2‑wire C‑bus or SPI serial |
The devices are rated for an operating temperature range of –40 °C to +85 °C.
The family supports either a 2‑wire C‑bus (I²C) or an SPI serial interface.
It comes in an 80‑pin TQFP package with a 0.65 mm pitch.
The DSP core runs at 50 MHz, delivering 50 MIPS.