The AD7878 is a complete ADC with a DSP interface, using LC2MOS technology. It has a 7 microsecond A/D conversion time, 72dB SNR, and is suitable for applications such as digital signal processing, speech recognition and synthesis, spectrum analysis, high-speed modems, and DSP servo control.
The AD7878 is a fast, complete 12-bit A/D converter designed for digital signal processing applications. It features a versatile DSP interface consisting of an 8-word, first-in, first-out (FIFO) memory and associated control logic, allowing up to eight samples to be digitized before the microprocessor services the converter. The device includes an on-chip track/hold amplifier, a 3 V Zener reference, and interfaces to high-speed DSP processors like the ADSP-2100 and TMS320 series.
| Resolution | 12 Bits |
|---|---|
| Sampling Rate | 100 kHz |
| Input Voltage Range | ±3 Volts |
| Power Dissipation | 95.5 mW max |
| Data Access Time | 41 ns max |
| FIFO Size | 8-Word |
The maximum data access time is 41 ns.
The analog input has a bipolar range of ±3 V.
It interfaces to high speed DSP processors, e.g., ADSP-2100, TMS32010, TMS32020.