Datasheet

MAX1444
10-Bit, 40Msps, 3.0V, Low-Power
ADC with Internal Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= 3V; OV
DD
= 2.7V; 0.1µF and 1µF capacitors from REFP, REFN, and COM to GND; V
REFIN
= 2.048V; REFOUT connected to
REFIN through a 10kΩ resistor; V
IN
= 2V
P-P
(differential with respect to COM); C
L
= 10pF at digital outputs; f
CLK
= 40MHz; T
A
= T
MIN
to T
MAX
, unless otherwise noted. ≥ +25°C guaranteed by production test, < +25°C guaranteed by design and characterization; typi-
cal 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 18.7mW/°C above +70°C).....1495.3mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC ACCURACY
Resolution 10 Bits
Integral Nonlinearity INL f
IN
= 7.51MHz, T
A
≥ +25°C ±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 T
A
≥ +25°C 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 kΩ
Input Capacitance C
IN
5pF
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 56.3 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 56.1 59
Signal-to-Noise + 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 74Spurious-Free Dynamic Range SFDR
f
IN
= 39.9 MHz (Note 1) 72.5
dBc