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| MAX1245_09 Datasheet, PDF (2/21 Pages) Maxim Integrated Products – +2.375V, Low-Power, 8-Channel, Serial 12-Bit ADC | |||
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+2.375V, Low-Power, 8-Channel,
Serial 12-Bit ADC
ABSOLUTE MAXIMUM RATINGS
VDD to AGND, DGND .............................................. -0.3V to +6V
AGND to DGND.................................................... -0.3V to +0.3V
CH0âCH7, 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 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
MAX1245_C_P ................................................... 0°C to +70°C
MAX1245_E_P ................................................ -40°C to +85°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 = +2.375V to +3.3V, COM = 0V, fCLK = 1.5MHz, external clock (50% duty cycle), 15 clocks/conversion cycle (100ksps),
VREF = 2.048V 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
MAX1245A
MAX1245B
No missing codes over temperature
12
Bits
±0.5
LSB
±1.0
±1 LSB
±0.5
±4
LSB
±0.5
±4
LSB
±0.25
ppm/°C
±0.2
LSB
DYNAMIC SPECIFICATIONS (10kHz sine-wave input, 0Vp-p to 2.048Vp-p, 100ksps, 1.5MHz external clock, bipolar input mode)
Signal-to-Noise + Distortion Ratio SINAD
68
dB
Total Harmonic Distortion
THD Up to the 5th harmonic
-76
dB
Spurious-Free Dynamic Range
SFDR
76
dB
Channel-to-Channel Crosstalk
Small-Signal Bandwidth
50kHz, 2Vp-p (Note 4)
-3dB rolloff
-85
dB
2.25
MHz
Full-Power Bandwidth
1.0
MHz
CONVERSION RATE
Conversion Time (Note 5)
Track/Hold Acquisition Time
Aperture Delay
Aperture Jitter
Internal Clock Frequency
External Clock Frequency
Internal clock, SHDN = FLOAT
5.5
7.5
tCONV Internal clock, SHDN = VDD
35
65
µs
External clock = 1.5MHz, 12 clocks/conversion 8
tACQ External clock = 1.5MHz
2.0
µs
40
ns
<50
ps
SHDN = FLOAT
SHDN = VDD
1.5
0.225
MHz
Data transfer only
0.1
1.5
MHz
0
1.5
2 _______________________________________________________________________________________
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