XRDAN30 Datasheet, PDF (1/4 Pages) Exar Corporation – CMOS Current Output D/A Converter Design Concepts for Wide Bandwidth Applications

XRDAN30


   
 

  
    
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Figure 2. Equivalent Circuit at Full Scale for
AC Analysis
The Effect of DAC Output Capacitance
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4, 
Gain
(dB)
Amp Main
Pole
P1
,(% +4 2
Figure 3. Op Amp Open Loop Characteristics
Figure 1. Typical Configuration CMOS I_OUT
DAC with External Op Amp forming Voltage
Output Configuration
20 Lo g
(
R _IN
R_IN +
Rf ⁾
,(% +4 2
Gain
(dB)
R_IN • R_f x C_O =
1
P2

Figure 4. Feedback Signal Path
Transfer Characteristics