Electrical characteristics (continued) – Rainbow Electronics MAX1448 User Manual
Page 3
MAX1448
10-Bit, 80Msps, Single +3.0V, Low-Power
ADC with Internal Reference
_______________________________________________________________________________________
3
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