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| MAX1444 Datasheet, PDF (3/20 Pages) Maxim Integrated Products – 10-Bit, 40Msps, 3.0V, Low-Power ADC with Internal Reference | |||
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10-Bit, 40Msps, 3.0V, Low-Power
ADC with Internal Reference
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3V; OVDD = 2.7V; 0.1µF and 1µF capacitors from REFP, REFN, and COM to GND; VREFIN = 2.048V; REFOUT connected to
REFIN through a 10k⦠resistor; VIN = 2VP-P (differential with respect to COM); CL = 10pF at digital outputs; fCLK = 40MHz; TA = TMIN
to TMAX, unless otherwise noted. ⥠+25°C guaranteed by production test, < +25°C guaranteed by design and characterization; typi-
cal values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
Third-Harmonic Distortion
HD3
fIN = 7.51MHz
fIN = 19.91MHz
fIN = 39.9MHz (Note 1)
-75
-74
dBc
-72.5
Two-Tone Intermodulation
Distortion
f1 = 11.5MHz at -6.5dBFS
IMD f2 = 13.5MHz at -6.5dBFS
(Note 2)
-76
dBc
Third-Order Intermodulation
Distortion
f1 = 11.5MHz at -6.5dBFS
IM3 f2 = 13.5MHz at -6.5dBFS
(Note 2)
Total Harmonic Distortion
(First 4 Harmonics)
Small-Signal Bandwidth
Full-Power Bandwidth
Aperture Delay
Aperture Jitter
Overdrive Recovery Time
Differential Gain
Differential Phase
Output Noise
INTERNAL REFERENCE
Reference Output Voltage
THD
FPBW
tAD
tAJ
fIN = 7.51MHz
fIN = 19.91MHz
fIN = 39.9MHz (Note 1)
Input at -20dBFS, differential inputs
Input at -0.5dBFS, differential inputs
For 1.5 Ã full-scale input
IN+ = IN- = COM
REFOUT
Reference Temperature
Coefficient
TCREF
Load Regulation
BUFFERED EXTERNAL REFERENCE (VREFIN = 2.048V)
REFIN Input Voltage
VREFIN
Positive Reference Output
Voltage
VREFP
Negative Reference Output
Voltage
Common-Mode Level
Differential Reference Output
Voltage Range
REFIN Resistance
VREFN
VCOM
âVREF âVREF = VREFP - VREFN, TA ⥠+25°C
RREFIN
-76
dBc
-73.8
-65
-72.2
-65
-70
500
400
1
2
2
±1
±0.25
0.2
2.048 ±1%
60
1.25
dBc
MHz
MHz
ns
psRMS
ns
%
Degrees
LSBRMS
V
ppm/°C
mV/mA
2.048
V
2.012
V
0.988
V
VDD / 2
V
0.98
1.024
1.07
V
>50
Mâ¦
_______________________________________________________________________________________ 3
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