Sigma-Delta Modulators
AD7720Analog Devices   CMOS Sigma-Delta Modulator with 90 dB Dynamic Range 
AD7724Analog Devices   Dual, 7th-Order, Sigma-Delta Modulator 
ADS1201Texas Instruments   High Dynamic Range Delta-Sigma Modulator 
ADS1202Texas Instruments   Current Shunt Delta-Sigma Modulator, 10MHz CLK, +/-250mV Input, 16-Bit Resolution 
ADS1204Texas Instruments   Four Delta-Sigma Modulators, 10MHz CLK, 0-5V Input, 16-Bit Resolution 

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