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MAX1391/MAX1394
2
_______________________________________________________________________________________
1.5V to 3.6V, 416ksps, 1-Channel True-Differential/
2-Channel Single-Ended, 8-Bit, SAR ADCs
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD = +1.5V to +3.6V, VREF = VDD, CREF = 0.1F, fSCLK = 5MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
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.
VDD to GND ..............................................................-0.3V to +4V
SCLK, CS, OE, CH1/CH2, UNI/BIP,
DOUT to GND.........................................-0.3V to (VDD + 0.3V)
AIN+, AIN-, AIN1, AIN2, REF to GND ........-0.3V to (VDD + 0.3V)
Maximum Current into Any Pin .........................................±50mA
Continuous Power Dissipation (TA = +70°C)
10-Pin TDFN (derate 18.5mW/°C above +70°C) ....1481.5mW
Operating Temperature Ranges
MAX139_E_ _...................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC ACCURACY (Note 2)
Resolution
8
Bits
Integral Nonlinearity
INL
±0.2
LSB
Differential Nonlinearity
DNL
No missing code overtemperature
±0.2
LSB
Offset Error
±0.15
LSB
Gain Error
Offset nulled
±0.15
LSB
Total Unadjusted Error
TUE
±0.25
LSB
Offset-Error Temperature
Coefficient
±25
mLSB/°C
Gain-Error Temperature
Coefficient
±0.06
mLSB/°C
Channel-to-Channel Offset
Matching
MAX1394 only
±0.05
LSB
Channel-to-Channel Gain
Matching
MAX1394 only
±0.05
LSB
Input Common-Mode Rejection
CMR
VCM = 0 to VDD, MAX1391 only
±0.1
mV/V
DYNAMIC SPECIFICATIONS (Note 3)
Signal-to-Noise Plus Distortion
SINAD
49
dB
Signal-to-Noise Ratio
SNR
49
dB
Total Harmonic Distortion
THD
-65
dBc
Spurious-Free Dynamic Range
SFDR
-66
dBc
Intermodulation Distortion
IMD
fIN1 = 98kHz at -6.5dBFS,
fIN2 = 102kHz at -6.5dBFS
-73
dB
Channel-to-Channel Crosstalk
MAX1394 only
-70
dB
Full-Power Bandwidth
-3dB point
4
MHz
MAX1391
200
Full-Linear Bandwidth
SINAD > 48dB
MAX1394
150
kHz
CONVERSION RATE
Conversion Time
tCONV
9 clock cycles per conversion
1.8
s
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