Electrical characteristics (continued) – Rainbow Electronics MAX1208 User Manual
Page 3
MAX1208
12-Bit, 80Msps, 3.3V ADC
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3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3.3V, OV
DD
= 2.0V, GND = 0, REFIN = REFOUT (internal reference), V
IN
= -0.5dBFS, CLKTYP = high, DCE = high, PD = low,
G/T = low, f
CLK
= 80MHz (50% duty cycle), T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
fIN = 3MHz at -0.5dBFS
89.3
fIN = 32.5MHz at -0.5dBFS
78.7
88.2
Spurious-Free Dynamic Range
SFDR
fIN = 70MHz at -0.5dBFS
85.1
dBc
fIN = 3MHz at -0.5dBFS
-87.1
fIN = 32.5MHz at -0.5dBFS
-85.0
-77.2
Total Harmonic Distortion
THD
fIN = 70MHz at -0.5dBFS
-81.2
dBc
fIN = 3MHz at -0.5dBFS
-93
fIN = 32.5MHz at -0.5dBFS
-89
Second Harmonic
HD2
fIN = 70MHz at -0.5dBFS
-86.5
dBc
fIN = 3MHz at -0.5dBFS
-96.8
fIN = 32.5MHz at -0.5dBFS
-95.1
Third Harmonic
HD3
fIN = 70MHz at -0.5dBFS
-85.1
dBc
Intermodulation Distortion
IMD
fIN1 = 68.5MHz at -7dBFS
fIN2 = 71.5MHz at -7dBFS
-81.1
dBc
Third-Order Intermodulation
IM3
fIN1 = 68.5MHz at -7dBFS
fIN2 = 71.5MHz at -7dBFS
-84.4
dBc
Two-Tone Spurious-Free
Dynamic Range
SFDRTT
fIN1 = 68.5MHz at -7dBFS
fIN2 = 71.5MHz at -7dBFS
85.4
dBc
Aperture Delay
tAD
Figure 4
0.9
ns
Aperture Jitter
tAJ
Figure 4
<0.2
psRMS
Output Noise
nOUT
INP = INN = COM
0.52
LSBRM
Overdrive Recovery Time
±10% beyond full scale
1
Clock
cycles
INTERNAL REFERENCE (REFIN = REFOUT; VREFP, VREFN, and VCOM are generated internally)
REFOUT Output Voltage
VREFOUT
1.978
2.048
2.079
V
COM Output Voltage
VCOM
VDD / 2
1.65
V
Differential Reference Output
VREF
VREF = VREFP - VREFN
1.024
V
REFOUT Load Regulation
35
mV/mA
REFOUT Temperature Coefficient
TCREF
+50
ppm/°C
Short to VDD—sinking
0.24
REFOUT Short-Circuit Current
Short to GND—sourcing
2.1
mA
BUFFERED EXTERNAL REFERENCE (REFIN driven externally; VREFIN = 2.048V, VREFP, VREFN, and VCOM are generated
internally)
REFIN Input Voltage
VREFIN
2.048
V
REFP Output Voltage
VREFP
(VDD/2) + (VREFIN / 4)
2.162
V