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| MAX11644 Datasheet, PDF (2/21 Pages) Maxim Integrated Products – 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 1-/2-Channel, 2-Wire Serial, 12-Bit ADCs | |||
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2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
ABSOLUTE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V
AIN0, AIN1, REF to GND ..............................-0.3V to the lower of
(VDD + 0.3V) and 6V
SDA, SCL to GND.....................................................-0.3V to +6V
Maximum Current into Any Pin .........................................±50mA
Continuous Power Dissipation (TA = +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°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 3.6V (MAX11645), VDD = 4.5V to 5.5V (MAX11644), VREF = 2.048V (MAX11645), VREF = 4.096V (MAX11644), fSCL =
1.7MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C, see Tables 1â5 for programming notation.)
PARAMETER
DC ACCURACY (Note 1)
Resolution
Relative Accuracy
Differential Nonlinearity
Offset Error
Offset-Error Temperature
Coefficient
SYMBOL
CONDITIONS
INL
DNL
(Note 2)
No missing codes over temperature
Relative to FSR
MIN TYP MAX UNITS
12
Bits
±1
LSB
±1
LSB
±4
LSB
0.3
ppm/°C
Gain Error
Gain-Temperature Coefficient
(Note 3)
Relative to FSR
±4
LSB
0.3
ppm/°C
Channel-to-Channel Offset
Matching
±0.1
LSB
Channel-to-Channel Gain
Matching
±0.1
LSB
DYNAMIC PERFORMANCE (fIN(SINE-WAVE) = 10kHz, VIN(P-P) = VREF, fSAMPLE = 94.4ksps)
Signal-to-Noise Plus Distortion
SINAD
70
Total Harmonic Distortion
THD Up to the 5th harmonic
-78
Spurious-Free Dynamic Range
SFDR
78
Full-Power Bandwidth
SINAD > 68dB
3
Full-Linear Bandwidth
-3dB point
5
CONVERSION RATE
Conversion Time (Note 4)
tCONV
Internal clock
External clock
7.5
10.6
Throughput Rate
Internal clock, SCAN[1:0] = 01
fSAMPLE External clock
51
94.4
Track/Hold Acquisition Time
800
Internal Clock Frequency
2.8
External clock, fast mode
60
Aperture Delay (Note 5)
tAD
External clock, high-speed mode
30
dB
dB
dB
MHz
MHz
µs
ksps
ns
MHz
ns
2 _______________________________________________________________________________________
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