MSM7716 - Stand-alone 14-bit Linear Codec with PLL Circuit
The MSM7716 is a single-channel 14-bit linear PCM Codec LSI implemented in CMOS. Not only can this Codec be operated stand-alone without requiring a CPU and a master clock, but also maximum design flexibility is provided by its wide range of selectable sampling frequencies and differential analog outputs which can directly drive a ceramic type handset receiver. In addition, output levels can be adjusted easily by means of external control. The MSM7716 is optimized for use as analog front end for voice processing DSP applications, such as Bluetooth™ and digital wireless phone systems.
Three signal controller interface
14-bit ADC and DAC
Digital signal input/output interface:
- 14-bit serial code in 2’s complement format
Sampling frequency (fs): 4 to 16 kHz
Transmission clock frequency: fs x 14 min., 2048 kHz max.
Compliance with ITU-T Recommendation G. 714 at fs=8kHz
Built-in PLL eliminates need for master clock
Two input circuits in transmit section
Two output circuits in receive section
Adjustable transmit gain with external resistor
Adjustable receive gain in 8 steps, 4 dB/step by external control
Adjustable gain up to 32dB eliminates need for microphone-amplifier
Analog outputs can drive 1kW load; amplitude 4.0Vpp max with push-pull driving.
Built-in reference voltage supply
Single power supply : +2.7 to +3.6 V
Active current: 17mA max.
Power-save current: 11mA max.
Power-down current: 50µA max.
Operating temperature -30 to +85°C
- 32-pin plastic TSOP (TSOP(1)32-P-814-0.50-1K)
- 30-pin plastic SSOP (SSOP30-P-56-0.65-K)
Typical Application Diagram
More Audio Codecs from Oki:
Please also inquire about:
MSM7732-01 (48-TQFP/LGA/BGA, 3V, 1-ch, µ-Law/A-Law, 14-bit linear, 2’s complement, DTMF generator,
earphone output) - Highlight Page
ML7041 (48-TQFP, 3V, 1-ch, µ-Law/A-Law, 14-bit linear, earphone output) - Highlight Page
MSM7728 (30-SSOP, 3V, 1-ch, 14-bit linear (2’s complement)
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