Rainbow Electronics MAX1449 - Manual (Page 3)

MAX1449
10-Bit, 105Msps, Single +3.3V, Low-Power
ADC with Internal Reference
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
f IN = 7.5MHz -72
f IN = 20MHz -72
Third-Harmonic Distortion
(Note 1)
HD3
f IN = 50MHz -70
dBc
Intermodulation Distortion (First 5
Odd-Order IMDs) (Note 2)
IMD
f 1 = 38MHz at -6.5dB FS
f 2 = 42MHz at -6.5dB FS
-76 dBc
Third-Order Intermodulation
Distortion (Note 2)
IM3
f 1 = 38MHz at -6.5dB FS
f 2 = 42MHz at -6.5dB FS
-76 dBc
f IN = 7.5MHz, T A = +25 °C -70 -61.5
f IN = 20MHz, T A = +25 °C -70 -61.5 dBc
Total Harmonic Distortion
(First 5 Harmonics)
(Note 1)
THD
f IN = 50MHz -70
Small-Signal Bandwidth Input at -20dB FS, differential inputs 500 MHz
Full-Power Bandwidth FPBW Input at -0.5dB FS, differential inputs 400 MHz
Aperture Delay t AD 1 ns
Aperture Jitter t AJ 2 ps RMS
Overdrive Recovery Time For 1.5 x 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 ppm/ °C
Load Regulation 1.25 mV/mA
EXTERNAL REFERENCE
Positive Reference REFP V REFIN = +2.048V 2.162 V
Negative Reference REFN V
REFIN
= +2.048V 1.138 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 x
V DD
Input High Threshold V
IH
PD, OE
0.8 x
V DD
V
CLK
0.2 x
V DD
Input Low Threshold V IL
PD, OE
0.2 x
V DD
V
ELECTRICAL CHARACTERISTICS (continued)
(V DD = +3.3V, OV DD = +2.0V; 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; V REFIN = +2.048V, REFOUT
connected to REFIN through a 10k Ω resistor, V
IN = 2Vp-p (differential with respect to COM), C L
≈ 10pF at digital outputs, f
CLK =
105MHz, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)