FX619

The FX619 is an LSI circuit designed as a *Continuously Variable Slope Delta Codec and is intended for use in military communications systems.

Designed to meet Eurocom D1-IA8 with external components, the FX619 is suitable for applications in military Delta Multiplexers,switches and phones.

Encoder input and decoder output filters are incorporated on-chip. Sampling clock rates can be programmed to 16, 32 or 64 k bits/second from an internal clock generator or may be externally applied in the range 8 to 64 k bits/second. Sampling clock frequencies are output for the synchronization of external circuits.

The encoder has an enable function for use in multiplexer applications. Encoder and Decoder forced idle facilities are provided forcing a 10101010..... pattern in encode and a VDD/2 bias in decode. The companding circuits may be operated with a 3 or 4-bit algorithm which is externally selected. The FX619 may be put in the standby mode by selection of the powersave facility. A reference 1.024MHz oscillator uses an external clock or Xtal.The FX619 is a low-power, 5 volt CMOS device and is available in 22-pin cerdip DIL,24-lead/pin plastic and 28-lead ceramic leadless SMT packages.