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| MAX1449 Datasheet, PDF (3/18 Pages) Maxim Integrated Products – 10-Bit, 105Msps, Single +3.3V, Low-Power ADC with Internal Reference | |||
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10-Bit, 105Msps, Single +3.3V, Low-Power
ADC with Internal Reference
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +3.3V, OVDD = +2.0V; 0.1µF and 1.0µF 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 â 10pF at digital outputs, fCLK =
105MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Third-Harmonic Distortion
(Note 1)
Intermodulation Distortion (First 5
Odd-Order IMDs) (Note 2)
SYMBOL
CONDITIONS
HD3
fIN = 7.5MHz
fIN = 20MHz
fIN = 50MHz
IMD
f1 = 38MHz at -6.5dB FS
f2 = 42MHz at -6.5dB FS
MIN TYP MAX UNITS
-72
-72
dBc
-70
-76
dBc
Third-Order Intermodulation
Distortion (Note 2)
Total Harmonic Distortion
(First 5 Harmonics)
(Note 1)
Small-Signal Bandwidth
Full-Power Bandwidth
Aperture Delay
Aperture Jitter
Overdrive Recovery Time
Differential Gain
Differential Phase
Output Noise
INTERNAL REFERENCE
IM3
THD
FPBW
tAD
tAJ
f1 = 38MHz at -6.5dB FS
f2 = 42MHz at -6.5dB FS
fIN = 7.5MHz, TA = +25°C
fIN = 20MHz, TA = +25°C
fIN = 50MHz
Input at -20dB FS, differential inputs
Input at -0.5dB FS, differential inputs
For 1.5 x full-scale input
IN+ = IN- = COM
-76
dBc
-70
-70
-70
500
400
1
2
2
±1
±0.25
0.2
-61.5
-61.5 dBc
MHz
MHz
ns
psRMS
ns
%
degree
LSBRMS
Reference Output Voltage
REFOUT
2.048
±1%
V
Reference Temperature
Coefficient
TCREF
60
ppm/°C
Load Regulation
EXTERNAL REFERENCE
Positive Reference
Negative Reference
Differential Reference Voltage
REFIN Resistance
DIGITAL INPUTS (CLK, PD, OE)
REFP
REFN
âVREF
RREFIN
VREFIN = +2.048V
VREFIN = +2.048V
VREFP -VREFN, VREFIN = +2.048V
1.25
mV/mA
2.162
V
1.138
V
0.98 1.024 1.07
V
>50
Mâ¦
Input High Threshold
CLK
VIH
PD, OE
0.8 x
VDD
V
0.8 x
VDD
Input Low Threshold
CLK
VIL
PD, OE
0.2 x
VDD
V
0.2 x
VDD
_______________________________________________________________________________________ 3
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