Title :
A complete single supply dual 18-bit audio DAC
Author :
Hisano, Shinichi ; Brokaw, A. Paul ; Granoff, Neal R.
Author_Institution :
Analog Devices, Wilmington, MA, USA
fDate :
8/1/1991 12:00:00 AM
Abstract :
A complete 18-bit dual voltage-out audio DAC (digital-to-analog converter) was developed on a 2 μm BiCMOS process with laser-trimmable SiCr thin film resistors. A combination of segmented elements and R-2R networks was chosen to achieve high performance while maintaining low power consumption and a small die size. The device operates from a single 5 V supply with 50 mW power dissipation. It achieves 0.004% (-88 dB) THD (total harmonic distortion)+noise, 97.5 dB signal-to-noise ratio, and 115 dB channel separation. The die size is 2.65 mm×3.43 mm (104 mil ×135mil)
Keywords :
BIMOS integrated circuits; audio equipment; digital-analogue conversion; 18 bit; 2 micron; 5 V; 50 mW; BiCMOS process; R-2R networks; SiCr thin film resistors; channel separation; digital-to-analog converter; dual voltage-out audio DAC; low power consumption; power dissipation; segmented elements; signal-to-noise ratio; single supply; small die size; total harmonic distortion; BiCMOS integrated circuits; CMOS technology; Capacitors; Laser noise; Pulse width modulation; Resistors; Shift registers; Streaming media; Thin film devices; Voltage;
Journal_Title :
Consumer Electronics, IEEE Transactions on
