Rainbow Electronics MAX1383 - Manual (Page 8)

MAX1377/MAX1379/MAX1383
Dual, 12-Bit, 1.25Msps Simultaneous-Sampling
ADCs with Serial Interface
8 _______________________________________________________________________________________
MAX1379 UNIPOLAR INTEGRAL
NONLINEARITY vs. DIGITAL OUTPUT CODE
MAX1377 toc11
DIGITAL OUTPUT CODE (LSB)
INL (LSB)
3072 2048 1024
-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 INTEGRAL
NONLINEARITY vs. DIGITAL OUTPUT CODE
MAX1377 toc12
DIGITAL OUTPUT CODE (LSB)
INL (LSB)
3072 2048 1024
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0 4096
MAX1379 UNIPOLAR DIFFERENTIAL
NONLINEARITY vs. DIGITAL OUTPUT CODE
MAX1377 toc13
DIGITAL OUTPUT CODE (LSB)
DNL (LSB)
3072 2048 1024
-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 DIFFERENTIAL
NONLINEARITY vs. DIGITAL OUTPUT CODE
MAX1377 toc14
DIGITAL OUTPUT CODE (LSB)
DNL (LSB)
3072 2048 1024
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0 4096
-1.5
-1.2
-0.6
-0.9
-0.3
0
-40 10 -15 35 60 85
MAX1379 OFFSET ERROR
vs. TEMPERATURE
MAX1377 toc15
TEMPERATURE (°C)
OFFSET ERROR (LSB)
CHANNEL 1
CHANNEL 2
0
0.4
1.2
0.8
1.6
2.0
-40 10 -15 35 60 85
MAX1379 GAIN ERROR
vs. TEMPERATURE
MAX1377 toc16
TEMPERATURE (°C)
GAIN ERROR (LSB)
CHANNEL 2
CHANNEL 1
MAX1377 BIPOLAR DNL
vs. OUTPUT CODE
MAX1377 toc10
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 4500 4000 3000 2500 1000 2000 1500 500 0
Typical Operating Characteristics (continued)
(V AVDD = 5V/3V, V L = 3V, f SCLK = 20MHz, T A = +25°C, unless otherwise noted.)
MAX1379 FFT PLOT
MAX1377 toc17
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
f SAMPLE = 1.8Msps
f SCLK = 28.8MHz
f IN = 100kHz
SINAD = 70.43dB
SNR = 70.72dB
THD = -82.33dB
SFDR = 82.78dB
V
REF = 4.096V
0
-20
-40
-60
-80
-100
-120
0 300 600 900
MAX1379 FFT PLOT
M
AX1377 toc18
ANALOG INPUT FREQUENCY (kHz)
A
M
PLITUDE (dB)
0 300 600 900
0
-20
-40
-60
-80
-100
-120
f SAMPLE = 1.8Msps
f
SCLK
= 28.8MHz
f IN = 250kHz
SINAD = 70.05dB
SNR = 70.32dB
THD = -82.35dB
SFDR = 83.22dB
V
REF = 4.096V