DocumentCode
3414213
Title
A 110dB ternary PWM current-mode audio DAC with monolithic 2Vrms driver
Author
Lei, T. ; Melanson, J.
fYear
2004
fDate
15-19 Feb. 2004
Firstpage
372
Abstract
A ΔΣ audio DAC uses a 4b quantizer, ternary PWM encoding, and semidigital current-mode FIRs for 110dB dynamic range over 20kHz. The IC achieves -99dB THD driving a single-ended 2Vrms signal into a 5kΩ load. Die area is 5.98mm2 in a 0.35μm/3.3V process with a 3μm/18V module.
Keywords
CMOS integrated circuits; FIR filters; audio coding; current-mode circuits; delta-sigma modulation; driver circuits; feedforward; intersymbol interference; pulse width modulation; quantisation (signal); continuous-time current source DAC; fifth-order feedforward topology; fully-differential class-AB topology; intersymbol interference; large voltage swing signals; monolithic driver; multibit delta-sigma modulator; quantizer; semidigital current-mode FIR; single-ended signal; stereo DAC; ternary PWM current-mode audio DAC; ternary PWM encoding; Clocks; Driver circuits; Encoding; Finite impulse response filter; Interpolation; Intersymbol interference; MOS devices; Pulse width modulation; Shift registers; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 2004. Digest of Technical Papers. ISSCC. 2004 IEEE International
ISSN
0193-6530
Print_ISBN
0-7803-8267-6
Type
conf
DOI
10.1109/ISSCC.2004.1332749
Filename
1332749
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