MAX1148BEUP 查看數據表（PDF） - Maxim Integrated
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MAX1148BEUP Datasheet PDF : 25 Pages
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Multichannel, True-Differential,
Serial, 14-Bit ADCs
ABSOLUTE MAXIMUM RATINGS
VDD to AGND, DGND ............................................-0.3V to +6.0V
AGND to DGND.....................................................-0.3V to +0.3V
CH0–CH7, COM to AGND..........................-0.3V to (VDD + 0.3V)
REF, REFADJ to AGND ..............................-0.3V to (VDD + 0.3V)
Digital Inputs to DGND...............................-0.3V to (VDD + 0.3V)
Digital Outputs to DGND ............................-0.3V to (VDD + 0.3V)
Digital Output Sink Current .................................................25mA
Continuous Power Dissipation (TA = +70°C)
20 TSSOP (derate 10.9mW/°C above +70°C) .............879mW
Operating Temperature Ranges
MAX114_ BC_ _ ..................................................0°C to +70°C
MAX114_ BE_ _ ...............................................-40°C to +85°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°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.
ELECTRICAL CHARACTERISTICS
(VDD = 5V (MAX1146/MAX1148), VDD = 3.3V (MAX1147/MAX1149), SHDN = VDD, VCOM = 0, fSCLK = 2.1MHz, external clock (50%
duty cycle), 18 clocks/conversion (116ksps), VREFADJ = VDD, CREF = 2.2µF, external +4.096V reference at REF (MAX1146/
MAX1148), external 2.500V reference at REF (MAX1147/MAX1149), TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.)
PARAMETER
DC ACCURACY (Note 1)
Resolution
Relative Accuracy (Note 2)
Differential Nonlinearity
Offset Error
Offset Temperature Coefficient
Gain Error
Gain Temperature Coefficient
SYMBOL
CONDITIONS
INL
DNL
No missing codes over temperature
(Note 3)
MIN TYP MAX UNITS
14
Bits
±0.7
±2
LSB
-1.0 ±0.5 +1.5 LSB
±10
LSB
0.3
ppm/°C
±20
LSB
±0.8
ppm/°C
Channel-to-Channel Offset
Matching
±1
LSB
Channel-to-Channel Gain
Matching
±1
LSB
DYNAMIC SPECIFICATIONS (1kHz sine-wave input, 2.5VP-P, full-scale analog input, 116ksps, 2.1MHz external clock)
Signal-to-Noise Plus Distortion
Ratio
SINAD
77
81
dB
Total Harmonic Distortion
THD
Up to the 5th harmonic
-96
-88
dB
Spurious-Free Dynamic Range
SFDR
84
98
dB
Channel-to-Channel Crosstalk
(Note 4)
-85
dB
Small-Signal Bandwidth
SSBW -3dB point
3.0
MHz
Full-Power Bandwidth
CONVERSION RATE
FPBW SINAD > 68dB
2.0
MHz
Conversion Time (Note 5)
External clock, 2.1MHz 15 SCLK cycles
7.2
tCONV Internal clock
6
µs
8
2 _______________________________________________________________________________________
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