Typical operating characteristics – Rainbow Electronics MAX1383 User Manual
Page 7
MAX1377/MAX1379/MAX1383
Dual, 12-Bit, 1.25Msps Simultaneous-Sampling
ADCs with Serial Interface
_______________________________________________________________________________________
7
MAX1377 BIPOLAR FFT
MAX1377 toc01
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
f
SAMPLE
= 1.25MHz
f
SCLK
= 20MHz
f
IN
= 100kHz
SINAD = 60.052dB
SNR = 69.073dB
THD = -92.267dB
SFDR = 93.225dB
V
REF
= 2.048V
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
500
600
MAX1377 BIPOLAR FFT
MAX1377 toc02
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
f
SAMPLE
= 1.25MHz
f
SCLK
= 20MHz
f
IN
= 250kHz
SINAD = 68.720dB
SNR = 68.769dB
THD = -88.244dB
SFDR = 91.237dB
V
REF
= 2.048V
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
500
600
MAX1377 BIPOLAR FFT
MAX1377 toc03
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
f
SAMPLE
= 1.25MHz
f
SCLK
= 20MHz
f
IN
= 500kHz
SINAD = 68.542dB
SNR = 68.554dB
THD = -90.391dB
SFDR = 94.350dB
V
REF
= 2.048V
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
500
600
Typical Operating Characteristics
(V
AVDD
= 5V/3V, V
L
= 3V, f
SCLK
= 20MHz, T
A
= +25°C, unless otherwise noted.)
MAX1377 UNIPOLAR FFT
MAX1377 toc04
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
f
SAMPLE
= 1.25MHz
f
SCLK
= 20MHz
f
IN
= 100kHz
SINAD = 69.324dB
SNR = 69.400dB
THD = -86.952dB
SFDR = 89.213dB
V
REF
= 2.048V
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
500
600
MAX1377 UNIPOLAR FFT
MAX1377 toc05
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
f
SAMPLE
= 1.25MHz
f
SCLK
= 20MHz
f
IN
= 250kHz
SINAD = 68.947dB
SNR = 69.054dB
THD = -85.101dB
SFDR = 86.718dB
V
REF
= 2.048V
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
500
600
MAX1377 UNIPOLAR FFT
MAX1377 toc06
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
f
SAMPLE
= 1.25MHz
f
SCLK
= 20MHz
f
IN
= 500kHz
SINAD = 68.645dB
SNR = 68.715dB
THD = -83.617dB
SFDR = 88.709dB
V
REF
= 2.048V
0
-20
-40
-60
-80
-100
-120
0
100
200
300
400
500
600
MAX1377 UNIPOLAR DNL
vs. OUTPUT CODE
MAX1377 toc07
CODE
DNL (LSB)
500
3500 4000
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
4500
2000 2500 3000
1000 1500
MAX1377 BIPOLAR INL
vs. OUTPUT CODE
MAX1377 toc08
CODE
INL (LSB)
3500
4500
4000
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
3000
2500
1000
2000
1500
500
0
MAX1377 UNIPOLAR INL
vs. OUTPUT CODE
MAX1377 toc09
CODE
INL (LSB)
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
3500
4500
4000
3000
2500
1000
2000
1500
500
0