Institute of Microelectronics
Automatic sizing of DT ΣΔ-ADCs
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New modulator...
Lock architecture
Reset...
Simulation settings...
Load from File
Save to File
Simulate
Optimize
Coefficients
Integrators
Input signal
Quantizer
D/A converters
STF/NTF shape
SNR/OSR
Maximum STF Global Gains:
Minimum STF Inband Gains:
Lower STF Out-Of-Band Constraints:
Upper STF Out-Of-Band Constraints:
Maximum Out-Of-Band NTF Gain:
Settings...
Settings...
STF
Maximum STF global gain
dB
Minimum STF inband gains
f/f
s
dB
f/f
s
dB
f/f
s
dB
Lower out-of-band constraints
f/f
s
dB
f/f
s
dB
f/f
s
dB
f/f
s
dB
f/f
s
dB
Upper out-of-band constraints
f/f
s
dB
f/f
s
dB
f/f
s
dB
f/f
s
dB
f/f
s
dB
NTF
Maximum NTF Out-of-Band-Gain (OBG)
dB
Inner TF
Calculate Inner TFs
Amplitude
min.:
FS
max.:
FS
Frequency
f/f
band
Duty Cycle
Input S/H
enable
FIR DAC:
enable
Filter order:
Active coeff. (0=disable,1=enable):
Fixed coeff. values (0 means optimize coeff.):
min. values:
max. values:
Quantizer levels
Secondary Quantizer
Levels:
Duty Cycle Primary Quant.:
Dithering
a/LSB
Desired input swing
min.:
a/FS
max.:
a/FS
Model type
CoI Filter
Sinc Filter
Matched Filter
Optimal Filter
Filter order:
Filter delays:
active
Value
optimize
fixed
same as a1
value:
min.:
max.:
D/A settings...
Desired swing
min.:
a/FS
max.:
a/FS
Lowpass
Incremental
f
center
Choose
OSR/f
s
f
b
/f
s
OSR/f
b
OSR
f
s
f
b
SNR Goal
dB
f
center
Choose
OSR/f
s
f
b
/f
s
OSR/f
b
OSR
f
s
f
b
SNR Goal
dB
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Choose the parameters you like to optimize or reset to default:
Coefficients
STF
Simulation length
2
14
2
15
2
16
A Hanning
3
window is used.
