Introduction
●The TLC320AD50C, TLC320AD50I, and TLC320AD52C provide high-resolution signal conversion from digital-to-analog (D/A) and from analog-to-digital (A/D) using oversampling sigma-delta technology. This device consists of a pair of 16-bit synchronous serial conversion paths (one for each direction) and includes an interpolation filter before the DAC and a decimation filter after the ADC. Other overhead functions on the chip include timing (sample rate, FSD delay) and control (programmable gain amplifier, PLL, communication protocol, etc.). The sigma-delta architecture produces high resolution A/D and D/A conversion at a low system cost.
●Features
●• General-purpose analog interface circuit for V.34+ modem and business audio applications
●• 16-bit oversampling sigma-delta ADC and DAC
●• Serial port interface
●• Typical 89-dB SNR (signal-to-noise ratio) for ADC and DAC
●• Typical 90-dB THD (signal to total harmonic distortion) for ADC and DAC
●• Typical 88-dB dynamic range
●• Test mode that includes a digital loopback test and analog loopback test
●• Programmable A/D and D/A conversion rate
●• Programmable input and output gain control
●• Maximum conversion rate: 22.05 kHz
●• Single 5-V power supply voltage or 5-V analog and 3-V digital power supply voltage
●• Power dissipation (PD) of 120 mW rms typical in the operating mode
●• Hardware power-down mode to 7.5 mW
●• Internal reference voltage (Vref)
●• Differential architecture throughout device
●• TLC320AD50C/I can support up to three slave devices; TLC320AD52C can support one slave
●• 2s complement data format
●• ALTDATA terminal provides data monitoring
●• Monitor amplifier to monitor input signals
●• On-chip phase locked loop (PLL)
