Relative Accuracy (Note 2)
M
Low-Power, 8-Channel,
S erial 12-Bit ADCs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V
DD
to AGND............................................................-0.3V to +6V
V
SS
to AGND ............................................................+0.3V to -6V
V
DD
to V
SS
..............................................................-0.3V to +12V
AGND to DGND.....................................................-0.3V to +0.3V
CH0–CH7 to AGND, DGND.............(V
SS
- 0.3V) to (V
DD
+ 0.3V)
CH0–CH7 Total Input Current ..........................................±20mA
VREF to AGND ...........................................-0.3V to (V
DD
+ 0.3V)
REFADJ to AGND.......................................-0.3V to (V
DD
+ 0.3V)
Digital Inputs to DGND...............................-0.3V to (V
DD
+ 0.3V)
Digital Outputs to DGND............................-0.3V to (V
DD
+ 0.3V)
Digital Output Sink Current.................................................25mA
ELECTRICAL CHARACTERISTICS
(V
DD
= 5V ±5%; V
SS
= 0V or -5V; f
CLK
= 2.0MHz, external clock (50% duty cycle); 15 clocks/conversion cycle (133ksps); MAX186—
4.7μF capacitor at VREF pin; MAX188—external reference, VREF = 4.096V applied to VREF pin; T
A
= T
MIN
to T
MAX
, unless otherwise
noted.)
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.
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
±1.0
±1
±2.0
±3.0
±3.0
±3.0
±3.0
±1.5
±2.0
±2.0
±3.0
LSB
±0.75
±1.0
±0.5
Differential Nonlinearity
DNL
LSB
Resolution
12
Bits
±0.5
Offset Error
LSB
Gain Error (Note 3)
LSB
Gain Temperature Coefficient
Channel-to-Channel
Offset Matching
DYNAMIC SPECIFICATIONS
(10kHz sine wave input, 4.096V
P-P
, 133ksps, 2.0MHz external clock, bipolar input mode)
±0.8
ppm/°C
±0.1
LSB
SINAD
70
dB
THD
-80
dB
Spurious-Free Dynamic Range
Channel-to-Channel Crosstalk
SFDR
80
dB
dB
-85
CONDITIONS
MAX186D/MAX188D
MAX186 (all grades)
MAX186D/MAX188D
No missing codes over temperature
MAX186A/MAX188A
MAX186B/MAX188B
MAX186C/MAX188C
MAX188C
MAX186C
MAX186B/MAX188B
External reference
4.096V (MAX188)
External reference, 4.096V
MAX186A/MAX188A
65kHz, V
IN
= 4.096V
P-P
(Note 4)
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 11.11mW/°C above +70°C) ...........889mW
SO (derate 10.00mW/°C above +70°C)........................800mW
SSOP (derate 8.00mW/°C above +70°C) .....................640mW
CERDIP (derate 11.11mW/°C above +70°C)................889mW
Operating Temperature Ranges:
MAX186_C/MAX188_C ........................................0°C to +70°C
MAX186_E/MAX188_E......................................-40°C to +85°C
MAX186_M/MAX188_M..................................-55°C to +125°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
MAX188A
MAX188B
MAX188C
MAX188D
Signal-to-Noise + Distortion Ratio
Total Harmonic Distortion
(up to the 5th harmonic)
DC ACCURACY
(Note 1)