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| MAX148 Datasheet, PDF (2/24 Pages) Maxim Integrated Products – +2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs | |||
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+2.7V to +5.25V, Low-Power, 8-Channel,
Serial 10-Bit ADCs
ABSOLUTE MAXIMUM RATINGS
VDD to AGND, DGND................................................. -0.3V to 6V
AGND to DGND ...................................................... -0.3V to 0.3V
CH0âCH7, COM to AGND, DGND ............ -0.3V to (VDD + 0.3V)
VREF, REFADJ to AGND ........................... -0.3V to (VDD + 0.3V)
Digital Inputs to DGND .............................................. -0.3V to 6V
Digital Outputs to DGND ........................... -0.3V to (VDD + 0.3V)
Digital Output Sink Current .................................................25mA
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 11.11mW/°C above +70°C) ......... 889mW
SSOP (derate 8.00mW/°C above +70°C) ................... 640mW
CERDIP (derate 11.11mW/°C above +70°C) .............. 889mW
Operating Temperature Ranges
MAX148_C_P/MAX149_C_P .............................. 0°C to +70°C
MAX148_E_P/MAX149_E_P............................ -40°C to +85°C
MAX148_MJP/MAX149_MJP ........................ -55°C to +125°C
Storage Temperature Range ............................ -60°C to +150°C
Lead Temperature (soldering, 10sec) ............................ +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 = +2.7V to +5.25V; COM = 0V; fSCLK = 2.0MHz; external clock (50% duty cycle); 15 clocks/conversion cycle (133ksps);
MAX149â4.7µF capacitor at VREF pin; MAX148âexternal reference, VREF = 2.500 V applied to VREF pin; TA = TMIN to TMAX; unless
otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DC ACCURACY (Note 1)
Resolution
10
Bits
Relative Accuracy (Note 2)
MAX14_A
INL
MAX14_B
±0.5
LSB
±1.0
Differential Nonlinearity
DNL No missing codes over temperature
±1 LSB
Offset Error
MAX14_A
MAX14_B
±0.15 ±1
LSB
±0.15 ±2
Gain Error (Note 3)
MAX14_A
MAX14_B
±1
LSB
±2
Gain Temperature Coefficient
±0.25
ppm/°C
Channel-to-Channel Offset
Matching
±0.05
LSB
DYNAMIC SPECIFICATIONS (10kHz sine-wave input, 0V to 2.500Vp-p, 133ksps, 2.0MHz external clock, bipolar input mode)
Signal-to-Noise + Distortion Ratio SINAD
66
dB
Total Harmonic Distortion
THD Up to the 5th harmonic
-70
dB
Spurious-Free Dynamic Range
SFDR
70
dB
Channel-to-Channel Crosstalk
Small-Signal Bandwidth
65kHz, 2.500Vp-p (Note 4)
-3dB rolloff
-75
dB
2.25
MHz
Full-Power Bandwidth
1.0
MHz
CONVERSION RATE
Conversion Time (Note 5)
Internal clock, SHDN = FLOAT
5.5
tCONV Internal clock, SHDN = VDD
35
External clock = 2MHz, 12 clocks/conversion
6
7.5
65
µs
Track/Hold Acquisition Time
Aperture Delay
tACQ
1.5
µs
30
ns
Aperture Jitter
<50
ps
2 _______________________________________________________________________________________
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