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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 : +2.7 V to +3.6 V • Low power consumption Operating mode : 24 mW Typ. Power down mode : 0.05 mW Typ. • Digital signal input/output interface : 14-bit serial code in 2s complement format • Sampling frequency(fs) : 4 to 16 kHz • Transmission clock frequency : fs x 14 min., 2048 kHz max. • Filter characteristics : 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 kΩ ; an amplitude of a maximum of 4.0 VPP with push-pull driving. • Built-in reference voltage supply • Package options: 32-pin plastic TSOP (TSOPI32-P-814-0.50-1K) (Product name : MSM7716TS-K) 30-pin plastic SSOP (SSOP30-P-56-0.65-K) (Product name : MSM7716GS-K)
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