EE 435 Lect 36 Spring 2010

EE 435 Lect 36 Spring 2010 - EE 435 Lecture 36 DAC Design...

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EE 435 Lecture 36 DAC Design
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DAC Architectures (Nyquist Rate) Types Voltage Scaling Resistor String DACs (string DACs) Interpolating Current Steering Binarily Weighted Resistors R-2R Ladders Current Source Steering Thermometer Coded Binary Weighted Segmented Charge Redistribution Switched Capacitor Serial Algorithmic Cyclic or Re-circulating Pipelined Integrating Resistor Switching MDACs (multiplying DACs) .• • • Review from last lecture .•
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Switch Implementation Issues n-channel p-channel T-gate .• • • Review from last lecture .•
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Current Steering DACs Inherently Insensitive to Nonlinearities in Switches and Resistors Smaller ON resistance and less phase-shift from clock edges .• • • Review from last lecture .•
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Current Steering DACs T-gate R S 1 I 1 V REF R F 1 2 V OUT n R S 2 I 2 R S N I N R d k I 1 d k R ± k 1 k DUMP β Compensation R I 1 d k C P k 1 k I SUM I T -I SUM C P Compensation
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This note was uploaded on 01/31/2012 for the course EE 345 taught by Professor Geiger during the Fall '11 term at Iowa State.

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EE 435 Lect 36 Spring 2010 - EE 435 Lecture 36 DAC Design...

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