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| MAX1248 Datasheet, PDF (2/24 Pages) Maxim Integrated Products – 2x4-Channel, Simultaneous-Sampling 14-Bit DAS | |||
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+2.7V to +5.25V, Low-Power, 4-Channel,
Serial 10-Bit ADCs in QSOP-16
ABSOLUTE MAXIMUM RATINGS
VDD to AGND, DGND .............................................. -0.3V to +6V
AGND to DGND.................................................... -0.3V to +0.3V
CH0âCH3, COM to AGND, DGND ............ -0.3V to (VDD + 0.3V)
VREF 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 10.53mW/°C above +70°C) ......... 842mW
QSOP (derate 8.30mW/°C above +70°C) ................... 667mW
CERDIP (derate 10.00mW/°C above +70°C) .............. 800mW
Operating Temperature Ranges
MAX1248_C_E/MAX1249_C_E .......................... 0°C to +70°C
MAX1248_E_E/MAX1249_E_E........................ -40°C to +85°C
MAX1248_MJE/MAX1249_MJE .................... -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);
MAX1248â4.7µF capacitor at VREF pin; MAX1249âexternal reference, VREF = 2.500V applied to VREF pin; TA = TMIN to TMAX,
unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DC ACCURACY (Note 1)
Resolution
Relative Accuracy (Note 2)
Differential Nonlinearity
Offset Error
Gain Error (Note 3)
Gain Temperature Coefficient
Channel-to-Channel Offset
Matching
INL
DNL
MAX124_A
MAX124_B
No missing codes over temperature
MAX124_A
MAX124_B
MAX124_A
MAX124_B
10
Bits
±0.5
LSB
±1.0
±1 LSB
±1
LSB
±2
±1
LSB
±2
±0.25
ppm/°C
±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
65kHz, 2.500Vp-p (Note 4)
-75
dB
Small-Signal Bandwidth
-3dB rolloff
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
Internal Clock Frequency
External Clock Frequency
SHDN = FLOAT
SHDN = VDD
Data transfer only
<50
ps
1.8
0.225
MHz
0.1
2.0
MHz
0
2.0
2 _______________________________________________________________________________________
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