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| MAX1272 Datasheet, PDF (2/20 Pages) Maxim Integrated Products – Fault-Protected, 12-Bit ADCs with Software-Selectable Input Range | |||
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Fault-Protected, 12-Bit ADCs
with Software-Selectable Input Range
ABSOLUTE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V
AIN to GND (MAX1272) ...................................................... ±12V
AIN to GND (MAX1273) ........................................................ ±6V
DOUT, CS, DIN, SCLK, REF to GND..........-0.3V to (VDD + 0.3V)
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (TA = +70°C)
8-Pin Plastic DIP (derate 9.1mW/°C above +70°C) ......727mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW
Operating Temperature Ranges
MAX127_ C_ _ .....................................................0°C to +70°C
MAX127_ E_ _...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
Junction Temperature .....................................................+150°C
Stresses beyond those listed under âAbsolute Maximum Ratingsâ 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.
ELECTRICAL CHARACTERISTICS
(VDD = 4.75V to 5.25V, unipolar/bipolar input range, external reference mode, VREF = 4.096V, CREF = 1.0µF, fSCLK = 1.4MHz,
50% duty cycle, CLOAD = 50pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETERS
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
ACCURACY (Note 1)
Resolution
12
Bits
Integral Nonlinearity
INL
±0.3 ±1.0
LSB
Differential Nonlinearity
DNL No missing codes over temperature
±0.35 ±1.00 LSB
Offset Error
Unipolar
Bipolar
±5
LSB
±10
Gain Error (Note 2)
Unipolar
Bipolar
±10
LSB
±10
Gain Error Temperature
Coefficient (Note 2)
Unipolar
Bipolar
±3
ppm/°C
±5
DYNAMIC SPECIFICATIONS (10kHz sine-wave input, ±10VP-P (MAX1272), or ±4.096VP-P (MAX1273), fSAMPLE = 87ksps)
Signal-to-Noise + Distortion Ratio SINAD
69
72
dB
Total Harmonic Distortion
THD Up to the 5th harmonic
-87
-78
dB
Spurious-Free Dynamic Range
SFDR
80
88
dB
Aperture Delay
tAD
15
ns
Aperture Jitter
tAJ
<50
ps
ANALOG INPUT
T/H Acquisition Time
tACQ
2.85
µs
2 _______________________________________________________________________________________
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