Datasheet

MAX1142/MAX1143
14-Bit ADC, 200ksps, +5V Single-Supply
with Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
AV
DD
to AGND, DV
DD
to DGND .............................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
AIN to AGND.....................................................................±16.5V
REFADJ, CREF, REF to AGND.................-0.3V to (AV
DD
+ 0.3V)
Digital Inputs to DGND.............................................-0.3V to +6V
Digital Outputs to DGND .........................-0.3V to (DV
DD
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
20-SSOP (derate 8.00mW/°C above +70°C) ...............640mW
Operating Temperature Ranges
MAX114_CAP ......................................................0°C to +70°C
MAX114_EAP....................................................-40°C to +85°C
Storage Temperature Range .............................-60°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(AV
DD
= DV
DD
= +5V ±5%, f
SCLK
= 4.8MHz, external clock (50% duty cycle), 24 clocks/conversion (200ksps), bipolar input, external
V
REF
= +4.096V, V
REFADJ
= AV
DD
, C
REF
= 2.2µF, C
CREF
= 1µF, 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
DC ACCURACY (Note 1)
Resolution 14 Bits
Unipolar Mode MAX114_A ±1
Relative Accuracy (Note 2) INL
MAX114_B ±2
LSB
Differential Nonlinearity DNL Unipolar Mode ±1 LSB
Transition Noise 0.34 LSB RMS
Unipolar ±4
Offset Error
Bipolar ±6
mV
Unipolar ±0.2
Gain Error (Note 3)
Bipolar ±0.3
%FSR
Offset D r i ft ( Bi p ol ar and U ni p ol ar ) Excluding reference drift ±1 ppm/
o
C
G ai n D r i ft ( Bi p ol ar and U ni p ol ar ) Excluding reference drift ±1 ppm/
o
C
DYNAMIC SPECIFICATIONS (5kHz sine-wave input, 200ksps, 4.8MHz clock, bipolar input mode).
(MAX1142, 24Vp-p. MAX1143, 8.192Vp-p)
f
IN
= 5kHz 81
SINAD
f
IN
= 100kHz 82
dB
f
IN
= 5kHz 82
SNR
f
IN
= 100kHz 82
dB
f
IN
= 5kHz -88
THD
f
IN
= 100kHz 91
dB
f
IN
= 5kHz 90
SFDR
f
IN
= 100kHz 95
dB
ANALOG INPUT
Unipolar 0 12
MAX1142
Bipolar -12 12
Unipolar 0 4.096
Input Range
MAX1143
Bipolar - 4.096 4.096
V