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ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - AD converter (ADC) External , Internal TQFN 20 EP
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MAX1377/MAX1379/MAX1383
Dual, 12-Bit, 1.25Msps Simultaneous-Sampling
ADCs with Serial Interface
_______________________________________________________________________________________ 9
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. DIGITAL OUTPUT CODE
MAX1377 toc07
DIGITAL OUTPUT 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 45002000 2500 30001000 1500
MAX1377 BIPOLAR INL
vs. DIGITAL OUTPUT CODE
MAX1377 toc08
DIGITAL OUTPUT CODE
INL (LSB)
3500 45004000
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
300025001000 20001500500
0
MAX1377 UNIPOLAR INL
vs. DIGITAL OUTPUT CODE
MAX1377 toc09
DIGITAL OUTPUT 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 45004000300025001000 200015005000
Typical Operating Characteristics (continued)
(V
AVDD
= 5V/3V, V
L
= 3V, f
SCLK
= 20MHz, T
A
= +25°C, unless otherwise noted.)
MAX1379 UNIPOLAR INL
vs. DIGITAL OUTPUT CODE
MAX1377 toc11
DIGITAL OUTPUT CODE
INL (LSB)
307220481024
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0 4096
MAX1379 BIPOLAR INL
vs. DIGITAL OUTPUT CODE
MAX1377 toc12
DIGITAL OUTPUT CODE
INL (LSB)
307220481024
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0 4096
MAX1377 BIPOLAR DNL
vs. DIGITAL OUTPUT CODE
MAX1377 toc10
DIGITAL OUTPUT CODE
DNL (LSB)
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
3500 45004000300025001000 200015005000