MSM7716

E2U0043-28-82 ¡ Semiconductor MSM7716 ¡ Semiconductor Single Rail Linear CODEC This version: Aug. 1998 MSM7716 Previous version: Nov. 1996 GENERAL DESCRIPTION The MSM7716 is a single-channel CODEC CMOS IC for voice signals that contains filters for linear A/D and D/A conversion. Designed especially for a single-power supply and low-power applications, the device is optimized for applications for the analog interfaces of audio signal processing DSPs and digital wireless systems. The analog output signal can directly drive a ceramic type handset receiver. In addition, levels for analog outputs can be set by external control. FEATURES Single power supply Low power consumption Operating mode Power down mode Digital signal input/output interface Sampling frequency(fs) Transmission clock frequency Filter characteristics : +2.7 V to +3.6 V : : : : : : 24 mW Typ. 0.05 mW Typ. 14-bit serial code in 2's complement format 4 to 16 kHz fs ¥ 14 min., 2048 kHz max. when fs = 8 kHz, complies with ITU-T Recommendation G. 714 Built-in PLL eliminates a master clock Two input circuits in transmit section Two output circuits in receive section Transmit gain adjustable using an external resistor Receive gain adjustable by external control 8 steps, 4 dB/step Transmit mic-amp is eliminated by the gain setting of a maximum of 36 dB. Analog outputs can drive a load of a minimum of 1 kW ; an amplitude of a maximum of 4.0 VPP with push-pull driving. Built-in reference vo...