AM79Q021JC

The AM79Q021JC by Advanced Micro Devices is a Quad Subscriber Line Audio-Processing Circuit (QSLAC) designed for programmable linecards. This device integrates essential analog linecard functions into a high-performance, four-channel codec-filter. It is based on the reliable Legerity SLAC device families.

The AM79Q021JC features a standard microprocessor interface and supports A-law, μ-law, or linear coding. It operates on a single 5.0 V CMOS technology, offering low-power consumption. The device includes built-in test modes with loopback and tone generation capabilities, along with μP access to PCM data. It also supports mixed-state impedance scaling and offers performance characteristics guaranteed over a 12 dB gain range.

This circuit is suitable for applications requiring audio processing in programmable linecards. It supports multiplexed SLIC inputs and broadcast state functionality. The device is available in a PLCC package, designed for standard surface mounting.

Key electrical specifications include a supply voltage range of -4.0 V to +7.0 V for VCC and -0.4 V to +7.0 V for VCCD. It has an output current capability of 40 mA from VCCD. The operating temperature range is -40°C to +85°C, with a storage temperature range of -65°C to +125°C.