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| MAX1270BCAI Datasheet, PDF (2/20 Pages) Maxim Integrated Products – Multirange, +5V, 8-Channel, Serial 12-Bit ADCs | |||
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Multirange, +5V, 8-Channel,
Serial 12-Bit ADCs
ABSOLUTE MAXIMUM RATINGS
VDD to AGND............................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
CH0âCH7 to AGND ......................................................... ±16.5V
REF, REFADJ to AGND ..............................-0.3V to (VDD + 0.3V)
SSTRB, DOUT to DGND.............................-0.3V to (VDD + 0.3V)
SHDN, CS, DIN, SCLK to DGND..............................-0.3V to +6V
Max Current into Any Pin ....................................................50mA
Continuous Power Dissipation (TA = +70°C)
24-Pin Narrow DIP (derate 13.33mW/°C above +70°C)..1067mW
28-Pin SSOP (derate 9.52mW/°C above +70°C) ..........762mW
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
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 = +5.0V ±5%; unipolar/bipolar range; external reference mode, VREF = +4.096V; 4.7µF at REF; external clock; fCLK = 2.0MHz,
50% duty cycle (MAX127_B); fCLK = 1.8MHz, 50% duty cycle (MAX127_A); 18 clock/conversion cycle, TA = TMIN to TMAX, unless
otherwise noted. Typical values are TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
ACCURACY (Note 1)
Resolution
12
Bits
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Channel-to-Channel Offset Error
Matching
Gain Error (Note 2)
Gain Error Temperature
Coefficient (Note 2)
INL
DNL
MAX127_A
MAX127_B
No missing codes over temperature
Unipolar
MAX127_A
MAX127_B
Bipolar
MAX127_A
MAX127_B
Unipolar
Bipolar
Unipolar
MAX127_A
MAX127_B
Bipolar
MAX127_A
MAX127_B
Unipolar, external reference
Bipolar, external reference
±0.1
±0.3
±3
±5
±0.5
LSB
±1.0
±1
LSB
±3
±5
LSB
±5
±10
LSB
±7
±10
LSB
±7
±10
ppm/°C
DYNAMIC SPECIFICATIONS (10kHz sine-wave input, ±10VP-P (MAX1270), or ±4.096VP-P (MAX1271), fSAMPLE = 110ksps
(MAX127_B), fSAMPLE = 100ksps (MAX127_A))
Signal-to-Noise + Distortion Ratio SINAD
70
dB
Total Harmonic Distortion
THD Up to the 5th harmonic
-87
-78
dB
Spurious-Free Dynamic Range
SFDR
80
dB
Channel-to-Channel Crosstalk
Aperture Delay
50kHz (Note 3)
DC, VIN = ±16.5V
External clock mode
-86
dB
-96
15
ns
Aperture Jitter
External clock mode
Internal clock mode
<50
ps
10
ns
2 _______________________________________________________________________________________
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