Rainbow-electronics MAX1314 Manual de usuario Pagina 8

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Typical Operating Characteristics (continued)
(AV
DD
= +5V, DV
DD
= +3V, AGND = DGND = 0, V
REF
= V
REFMS
= +2.5V (external reference), C
REF
= C
REFMS
= 0.1µF, C
REF+
=
C
REF-
= 0.1µF, C
REF+-to-REF-
= 2.2µF || 0.1µF, C
COM
= 2.2µF || 0.1µF, C
MSV
= 2.2µF || 0.1µF (unipolar devices), MSV = AGND (bipolar
devices), f
CLK
= 16.67MHz 50% duty cycle, INTCLK/EXTCLK = AGND (external clock), f
IN
= 500kHz, A
IN
= -0.4dBFS. T
A
= +25°C,
unless otherwise noted.) (Figures 3 and 4)
MAX1304–MAX1306/MAX1308–MAX1310/MAX1312–MAX1314
8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
8 _______________________________________________________________________________________
OUTPUT HISTOGRAM (DC INPUT)
MAX1304 toc10
DIGITAL OUTPUT CODE
COUNTS
2048204720462045
1000
2000
3000
4000
5000
6000
0
2044
00
1084
5497
1611
SMALL-SIGNAL BANDWIDTH
vs. ANALOG INPUT FREQUENCY
MAX1304 toc07
ANALOG INPUT FREQUENCY (MHz)
GAIN (dB)
101
-10
-8
-6
-4
-2
0
2
-12
0.1 100
A
IN
= -20dBFS
LARGE-SIGNAL BANDWIDTH
vs. ANALOG INPUT FREQUENCY
MAX1304 toc08
ANALOG INPUT FREQUENCY (MHz)
GAIN (dB)
101
-10
-8
-6
-4
-2
0
2
-12
0.1 100
A
IN
= -0.5dBFS
FFT PLOT
(2048-POINT DATA RECORD)
MAX1304 toc09
FREQUENCY (kHz)
AMPLITUDE (dBFS)
300
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-110
0
100 200 400 500
f
TH
= 1.04167Msps
f
IN
= 500kHz
A
IN
= -0.05dBFS
SNR = 70.7dB
SINAD = 70.6dB
THD = -87.5dBc
SFDR = 87.1dBc
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