The MT91L60 and MT91L61 perform A/D and D/A conversions and can reduce power consumption in telephony systems by up to 25%. They feature integrated gain control, programmable side-tone path, on-chip anti-alias filters, a reference voltage, and a bias source. Their analog output enables them to drive hands-free speaker systems, while the digital portion interfaces with different operating structures. Pricing is $3.15 each/10,000.