MAX189BCPA Ver la hoja de datos (PDF) - Maxim Integrated
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MAX189BCPA Datasheet PDF : 20 Pages
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+5V, Low-Power, 12-Bit Serial ADCs
ABSOLUTE MAXIMUM RATINGS
VDD to GND .............................................................-0.3V to +6V
AIN to GND................................................-0.3V to (VDD + 0.3V)
REF to GND ...............................................-0.3V to (VDD + 0.3V)
Digital Inputs to GND.................................-0.3V to (VDD + 0.3V)
Digital Outputs to GND..............................-0.3V to (VDD + 0.3V)
SHDN to GND.............................................-0.3V to (VDD + 0.3V)
REF Load Current (MAX187) .........................4.0mA Continuous
REF Short-Circuit Duration (MAX187)................................20sec
DOUT Current ..................................................................±20mA
Continuous Power Dissipation (TA = +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ..500mW
16-Pin Wide SO (derate 8.70mW/°C above +70°C) ...478mW
8-Pin CERDIP (derate 8.00mW/°C above +70°C) ......440mW
Operating Temperature Ranges:
MAX187_C_ _/MAX189_C_ _.............................0°C to +70°C
MAX187_E_ _/MAX189_E_ _ ..........................-40°C to +85°C
MAX187_MJA/MAX189_MJA .......................-55°C to +125°C
Storage Temperature Range............................-60°C to +150°C
Lead Temperature (soldering, 10sec) ............................+300°C
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
(VDD = +5V ±5%; GND = 0V; unipolar input mode; 75ksps, fCLK = 4.0MHz, external clock (50% duty cycle); MAX187—internal
reference: VREF = 4.096V, 4.7µF capacitor at REF pin, or MAX189—external reference: VREF = 4.096V applied to REF pin, 4.7µF
capacitor at REF pin; TA = TMIN to TMAX; unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
DC ACCURACY (Note 1)
Resolution
MAX18_A
12
Bits
±1⁄2
Relative Accuracy (Note 2)
MAX18_B
±1
LSB
MAX18_C
±2
Differential Nonlinearity
Offset Error
DNL
No missing codes over temperature
MAX18_A
MAX18_B/C
±1
LSB
±11⁄2
LSB
±3
MAX187
±3
Gain Error (Note 3)
MAX189A
±1
LSB
MAX189B/C
±3
Gain Temperature Coefficient
External reference, 4.096V
±0.8
ppm/°C
DYNAMIC SPECIFICATIONS (10kHz sine wave input, 0V to 4.096Vp-p, 75ksps)
Signal-to-Noise plus
Distortion Ratio
SINAD
70
dB
Total Harmonic Distortion
(up to the 5th harmonic)
THD
-80
dB
Spurious-Free Dynamic Range SFDR
80
dB
Small-Signal Bandwidth
Rolloff -3dB
4.5
MHz
Full-Power Bandwidth
0.8
MHz
2 _______________________________________________________________________________________
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