Rainbow Electronics MAX1444 User Manual
Page 2
MAX1444
10-Bit, 40Msps, +3.0V, Low-Power
ADC with Internal Reference
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(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.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
, OV
DD
to GND ...............................................-0.3V to +3.6V
OGND to GND.......................................................-0.3V to +0.3V
IN+, IN- to GND........................................................-0.3V to V
DD
REFIN, REFOUT, REFP,
REFN, and COM to GND.........................-0.3V to (V
DD
+ 0.3V)
OE, PD, CLK to GND..................................-0.3V to (V
DD
+ 0.3V)
D9–D0 to GND.........................................-0.3V to (OV
DD
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
32-Pin TQFP (derate 11.1mW/°C above +70°C)...........889mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC ACCURACY
Resolution
10
bits
Integral Nonlinearity
INL
f
IN
= 7.51MHz
±0.6
±1.9
LSB
Differential Nonlinearity
DNL
f
IN
= 7.51MHz, no missing codes
guaranteed
±0.4
±1.0
LSB
Offset Error
<
±0.1
±1.7
% FS
Gain Error
0
±2
% FS
ANALOG INPUT
Input Differential Range
V
DIFF
Differential or single-ended inputs
±1.0
V
Common-Mode
Voltage Range
V
COM
V
DD
/2
±0.5
V
Input Resistance
R
IN
Switched capacitor load
50
k
Ω
Input Capacitance
C
IN
5
pF
CONVERSION RATE
Maximum Clock Frequency
f
CLK
40
MHz
Data Latency
5.5
cycles
DYNAMIC CHARACTERISTICS (f
CLK
= 40MHz, 4096-point FFT)
f
IN
= 7.51MHz
57.5
59.5
f
IN
= 19.91MHz
57
59.5
Signal-To-Noise Ratio
SNR
f
IN
= 39.9MHz (Note 1)
58.5
dB
f
IN
= 7.51MHz
57
59.4
f
IN
= 19.91MHz
56.7
59
Signal-To-Noise And Distortion
(Up to 5th harmonic)
SINAD
f
IN
= 39.9MHz (Note 1)
58.3
dB
f
IN
= 7.51MHz
67
75
f
IN
= 19.91MHz
66
74
Spurious-Free Dynamic Range
SFDR
f
IN
= 39.9 MHz (Note 1)
72.5
dBc