News Release from: Rohm Electronics (UK)
Edited by the Electronicstalk Editorial Team on 27 May 2002
Oversampling keeps stereo DAC noise down
Rohm has a new high-resolution low-noise stereo digital-to-analogue convertor that combines good frequency response characteristics with low current consumption.
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Rohm has a new high-resolution low-noise stereo digital-to-analogue convertor that combines good frequency response characteristics with low current consumption. Ideal for audio applications including CD players, radios, TVs and set top boxes (STBs), the BU9480F saves space while delivering 16bit accuracy. The BU9480F is based on CMOS technology and offers a typical current dissipation of just 3.6mA.
Low noise characteristics are achieved through a 2x oversampling technique, which shifts low frequency noise to high frequency bands giving a typical signal-to-noise ratio (SNR) of 93dB.
Supporting frequencies up to four times the sampling frequency, the BU9480F can operate at up to 200kHz.
A range of operating voltages from 3 to 5.5V can be accommodated for application flexibility.
The device uses a resistor string method for conversion and features a two-channel common phase output and a serial data input.
The BU9480F is supplied in an 8-pin plastic package with dimensions of just 5.0 x 6.2 x 1.5mm.
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