Wideband Comp Current Output DAC to SE Interface: Impr Matching for Gain & Compliance Volt Swing

(ACTIVE) MATCHGAIN-CALC

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Description

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High-speed digital-to-analog converters (DACs) most often use a transformer-coupled output stage. In applications where this configuration is not practical, a single op amp differential to single-ended stage has often been used. This application note steps through the exact design equations required to achieve gain matching from each output as well as a matched input impedance to each of the DAC current outputs. An example high-speed design is shown in the attached document.

Technical Documents
Application notes (1)
Title Abstract Type Size (KB) Date Views TI Recommends
Multiple Files   21 Jun 2005 0

TI Devices (29)

Part Number Name Product Family
DAC2900  Dual-Channel, 10-Bit, 125-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC2902  Dual-Channel, 12-Bit, 125-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC2904  Dual-Channel, 14-Bit, 125-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC2932  Dual-Channel, 12-Bit, 40-MSPS, Ultra-Low Power Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC5652  Dual-Channel, 10-Bit, 275-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC5662  Dual-Channel, 12-Bit, 275-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC5672  Dual-Channel, 14-Bit, 275-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC5674  14-Bit, 400-MSPS, 2x-4x Interpolating Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC5675A  14-Bit, 400-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC900  10-Bit 165-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC902  12-Bit 165-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC904  14-Bit 165-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
DAC908  8-Bit 165-MSPS Digital-to-Analog Converter (DAC)   Digital-to-analog converters (DACs) 
OPA355  2.5V, 200MHz GBW, CMOS Single Op Amp With Shutdown  Operational amplifiers (op amps) 
OPA683  Very Low Power Current Feedback Amplifier with Disable  Operational amplifiers (op amps) 
OPA684  Low-Power, Current Feedback Operational Amplifier With Disable  Operational amplifiers (op amps) 
OPA820  Unity Gain Stable,Low Noise,Voltage Feedback Operational Amplifier  Operational amplifiers (op amps) 
OPA830  Low-Power, Single-Supply Operational Amplifier  Operational amplifiers (op amps) 
OPA842  Wideband, Low Distortion, Unity Gain Stable, Voltage Feedback Operational Amplifier  Operational amplifiers (op amps) 
THS3091  Single- High-Voltage, Low Distortion, Current-Feedback Operational Amplifier  Operational amplifiers (op amps) 
THS3111  Single, Low Noise, High Voltage Current-Feedback Amplifier  Operational amplifiers (op amps) 
THS3121  Single, Low Noise, High Output Drive, 475mA Current-Feedback Amplifier  Operational amplifiers (op amps) 
THS4031  100-MHz Low Noise Voltage-Feedback Amplifier  Operational amplifiers (op amps) 
THS4271  Super-Fast Ultra-Low Distortion High Speed Amplifier  Operational amplifiers (op amps) 
THS4304  Wideband Operational Amplifier  Operational amplifiers (op amps) 
THS5641A  8-Bit, 100-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
THS5651A  10-Bit, 125-MSPS Digital-to-Analog Converter (DAC)   Digital-to-analog converters (DACs) 
THS5661A  12-Bit, 125-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 
THS5671A  14-Bit, 125-MSPS Digital-to-Analog Converter (DAC)  Digital-to-analog converters (DACs) 

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