Rainbow Electronics MAX1444 - Manual (Page 3)

MAX1444
10-Bit, 40Msps, +3.0V, Low-Power
ADC with Internal Reference
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ELECTRICAL CHARACTERISTICS (continued)
(V DD = +3.0V, OV DD = +2.7V; 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; V REFIN = +2.048V, REFOUT con-
nected to REFIN through a 10k Ω resistor, V
IN = 2V p-p (differential w.r.t. COM), C L = 10pF at digital outputs, f CLK = 40MHz (50% duty
cycle), T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
f IN = 7.51MHz -75
f IN = 19.91MHz -74 Third-Harmonic Distortion HD3
f IN = 39.9MHz (Note 1) -72.5
dBc
Two-Tone Intermodulation
Distortion
IMD
f 1 = 11.5MHz at -6.5dBFS
f 2 = 13.5MHz at -6.5dBFS
(Note 2)
-76 dBc
Third-Order Intermodulation
Distortion
IM3
f 1 = 11.5MHz at -6.5dBFS
f 2 = 13.5MHz at -6.5dBFS
(Note 2)
-76 dBc
f IN = 7.51MHz -73.8 -65
f IN = 19.91MHz -72.2 -65
Total Harmonic Distortion
(First 5 Harmonics)
THD
f IN = 39.9MHz (Note 1) -70
dBc
Small-Signal Bandwidth Input at -20dBFS, differential inputs 500 MHz
Full-Power Bandwidth FPBW Input at -0.5dBFS, differential inputs 400 MHz
Aperture Delay t AD 1 ns
Aperture Jitter t AJ 2 ps RMS
Overdrive Recovery Time For 1.5 × full-scale input 2 ns
Differential Gain ±1 %
Differential Phase ±0.25 degree
Output Noise IN+ = IN- = COM 0.2 LS B RM S
INTERNAL REFERENCE
Reference Output Voltage REFOUT 2.048 ±1% V
Reference Temperature
Coefficient
TC
REF
60 p p m/ °C
Load Regulation 1.25 mV/mA
EXTERNAL REFERENCE
Positive Reference REFP V REFIN = +2.048V 2.012 V
Negative Reference REFN V
REFIN
= +2.048V 0.988 V
Differential Reference Voltage ∆V
REF V REFP – V REFN , V REFIN = +2.048V 0.98 1.024 1.07 V
REFIN Resistance R REFIN >50 M Ω
DIGITAL INPUTS (CLK, PD, OE)
CLK
0.8 ×
V DD
Input High Threshold V IH
PD, OE
0.8 ×
OV DD
V
CLK
0.2 ×
V DD
Input Low Threshold V IL
PD, OE
0.2 ×
OV DD
V