Rainbow Electronics MAX1448 - Manual (Page 3)

MAX1448
10-Bit, 80Msps, Single +3.0V, Low-Power
ADC with Internal Reference
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ELECTRICAL CHARACTERISTICS (continued)
(V DD = +3.0V, 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
≈ 15pF at digital outputs (Note 5),
f CLK = 83.3MHz (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 = 7.47MHz 61 74
f IN = 20MHz 61 74
Spurious-Free Dynamic
Range
SFDR
f
IN
= 39.9MHz (Note 1) 73
dBc
f IN = 7.47MHz 74
f IN = 20MHz 74 Third-Harmonic Distortion HD3
f IN = 39.9MHz (Note 1) 73
dBc
Intermodulation Distortion
Two-Tone
IMD TT
f 1 = 24MHz at -6.5dB FS, f 2 = 26MHz at
-6.5dB FS (Note 2)
-74 dBc
Third-Order Intermodulation
Distortion
IM3
f 1 = 24MHz at -6.5dB FS, f 2 = 26MHz at
-6.5dB FS (Note 2)
-74 dBc
f IN = 7.47MHz -72 -60
f IN = 20MHz -70 -60
Total Harmonic Distortion
(first 5 harmonics)
THD
f IN = 39.9MHz (Note 1) -69
dBc
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 × full-scale input 2 ns
Differential Gain ±1 %
Differential Phase ±0.25 degrees
Output Noise IN+ = IN- = COM 0.2 LSB RMS
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 2.012 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
D IGIT A L IN PU T S ( C LK, P D , OE)
CLK
0.8 x
V
DD
Input High Threshold V
IH
PD, OE
0.8 x
OV D D
V