+2.7V, Low-Power, 8-Channel,
Serial 12-Bit ADCs
ABSOLUTE MAXIMUM RATINGS
DD
V
to AGND, DGND................................................. -0.3V to 6V
Continuous Power Dissipation (T = +70°C)
A
AGND to DGND...................................................... -0.3V to 0.3V
CH0–CH7, COM to AGND, DGND ............ -0.3V to (V + 0.3V)
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
DD
VREF, REFADJ to AGND ........................... -0.3V to (V + 0.3V)
DD
Digital Inputs to DGND .............................................. -0.3V to 6V
Digital Outputs to DGND ........................... -0.3V to (V + 0.3V)
Digital Output Sink Current .................................................25mA
MAX146_C_P/MAX147_C_P.............................. 0°C to +70°C
MAX146_E_P/MAX147_E_P............................ -40°C to +85°C
MAX146_MJP/MAX147_MJP........................ -55°C to +125°C
Storage Temperature Range............................ -60°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
DD
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
(V = +2.7V to +3.6V (MAX146); V = +2.7V to +5.25V (MAX147); COM = 0; f = 2.0MHz; external clock (50ꢀ duty cycle); 15
DD
DD
SCLK
clocks/conversion cycle (133ksps); MAX146—4.7µF capacitor at VREF pin; MAX147—external reference, VREF = 2.500V applied to
VREF pin; T = T
to T ; unless otherwise noted.)
A
MIN
MAX
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
)
DC ACCURACY (Note 1
Resolution
12
Bits
0.5
MAX14_A
MAX14_B
MAX147C
1.0
2.0
Relative Accuracy (Note 2)
INL
LSB
No Missing Codes
NMC
DNL
12
Bits
MAX14_A/MAX14_B
MAX147C
1.0
Differential Nonlinearity
LSB
0.8
0.5
MAX14_A
3
4
4
Offset Error
LSB
MAX14_B/MAX147C
0.5
Gain Error (Note 3)
0.5
LSB
Gain Temperature Coefficient
0.25
ppm/°C
Channel-to-Channel Offset
Matching
0.25
LSB
DYNAMIC SPECIFICATIONS (10kHz sine-wave input, 0V to 2.500Vp-p, 133ksps, 2.0MHz external clock, bipolar input mode)
MAX14_A/MAX14_B
MAX147C
70
73
73
Signal-to-Noise + Distortion Ratio
Total Harmonic Distortion
SINAD
THD
dB
dB
dB
MAX14_A/MAX14_B
MAX147C
-88
-88
90
-80
Up to the 5th
harmonic
MAX14_A/MAX14_B
MAX147C
80
Spurious-Free Dynamic Range
SFDR
90
Channel-to-Channel Crosstalk
Small-Signal Bandwidth
Full-Power Bandwidth
65kHz, 2.500V
-3dB rolloff
(Note 4)
-85
2.25
1.0
dB
p-p
MHz
MHz
CONVERSION RATE
5.5
35
6
7.5
65
Internal clock, SHDN = FLOAT
Conversion Time (Note 5)
t
µs
Internal clock, SHDN = V
CONV
DD
External clock = 2MHz, 12 clocks/conversion
2
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