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| MAX1206 Datasheet, PDF (3/29 Pages) Maxim Integrated Products – 40Msps, 12-Bit ADC | |||
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40Msps, 12-Bit ADC
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3.3V, OVDD = 2.0V, GND = 0, REFIN = REFOUT (internal reference), CREFOUT = 0.1µF, CL â 5pF at digital outputs, VIN =
-0.5dBFS, CLKTYP = high, DCE = high, PD = low, G/T = low, fCLK = 40MHz (50% duty cycle), CREFP = CREFN = 0.1µF to GND, 1µF
in parallel with 10µF between REFP and REFN, CCOM = 0.1µF in parallel with 2.2µF to GND, TA = -40°C to +85°C, unless otherwise
noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Second Harmonic
Third Harmonic
HD2
HD3
fIN = 3MHz at -0.5dBFS
fIN = 20MHz at -0.5dBFS (Note 3)
fIN = 3MHz at -0.5dBFS
fIN = 20MHz at -0.5dBFS (Note 3)
-92.5
dBc
-96.3 -84.9
-93.8
dBc
-92.1 -83.3
Third-Order Intermodulation
IM3
fIN1 = 69MHz at -7dBFS,
fIN2 = 71MHz at -7dBFS
-89
dBc
Two-Tone Spurious-Free
Dynamic Range
Aperture Delay
Aperture Jitter
Output Noise
SFDRTT
tAD
tAJ
nOUT
fIN1 = 69MHz at -7dBFS,
fIN2 = 71MHz at -7dBFS
Figure 14
Figure 14
INP = INN = COM
Overdrive Recovery Time
±10% beyond full scale
INTERNAL REFERENCE (REFIN = REFOUT; VREFP, VREFN, and VCOM are generated internally)
REFOUT Output Voltage
VREFOUT
1.988
COM Output Voltage
VCOM VDD / 2
Differential Reference Output
Voltage
VREF
VREF = VREFP - VREFN
88
0.9
<0.2
0.5
1
2.048
1.65
1.024
dBc
ns
psRMS
LSBRMS
Clock
cycles
2.080
V
V
V
REFOUT Load Regulation
35
mV/mA
REFOUT Temperature Coefficient TCREF
+100
ppm/°C
REFOUT Short-Circuit Current
Short to VDD
Short to GND
0.24
mA
2.1
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
REFN Output Voltage
VREFP
VREFN
(VDD / 2) + (VREFIN / 4)
(VDD / 2) - (VREFIN / 4)
2.162
V
1.138
V
COM Output Voltage
VCOM VDD / 2
1.60 1.65 1.70
V
Differential Reference Output
Voltage
VREF
VREF = VREFP - VREFN
0.970 1.024 1.070
V
Differential Reference
Temperature Coefficient
+12.5
ppm/°C
Maximum REFP Current
Maximum REFN Current
Maximum COM Current
REFIN Input Resistance
IREFP
IREFN
ICOM
Source
Sink
Source
Sink
Source
Sink
0.4
mA
1.4
1.0
mA
1.0
1.0
mA
0.4
>50
Mâ¦
_______________________________________________________________________________________ 3
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