MAX1246 Datasheet, PDF (2/24 Pages) Maxim Integrated Products – +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16

+2.7V, Low-Power, 4-Channel,
Serial 12-Bit ADCs in QSOP-16
ABSOLUTE MAXIMUM RATINGS
V_DD to AGND, DGND................................................. -0.3V to 6V
AGND to DGND ...................................................... -0.3V to 0.3V
CH0–CH3, COM to AGND, DGND ............ -0.3V to (V_DD + 0.3V)
VREF to AGND........................................... -0.3V to (V_DD + 0.3V)
Digital Inputs to DGND .............................................. -0.3V to 6V
Digital Outputs to DGND ........................... -0.3V to (V_DD + 0.3V)
Digital Output Sink Current .................................................25mA
Continuous Power Dissipation (T_A = +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ......... 842mW
QSOP (derate 8.36mW/°C above +70°C) ................... 667mW
CERDIP (derate 10.00mW/°C above +70°C) .............. 800mW
Operating Temperature Ranges
MAX1246_C_E/MAX1247_C_E .......................... 0°C to +70°C
MAX1246_E_E/MAX1247_E_E........................ -40°C to +85°C
MAX1246_MJE/MAX1247_MJE .................... -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
(V_DD = +2.7V to +3.6V (MAX1246); V_DD = +2.7V to +5.25V (MAX1247); COM = 0V; f_SCLK = 2.0MHz; external clock (50% duty cycle);
15 clocks/conversion cycle (133ksps); MAX1246—4.7µF capacitor at VREF pin; MAX1247—external reference, VREF = 2.500 V
applied to VREF pin; T_A = T_MIN to T_MAX; unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DC ACCURACY (Note 1)
Resolution
12
Bits
Relative Accuracy (Note 2)
MAX124_A
INL
MAX124_B
±0.5
LSB
±1.0
Differential Nonlinearity
DNL No missing codes over temperature
±1 LSB
Offset Error
Gain Error (Note 3)
Gain Temperature Coefficient
MAX124_A
MAX124_B
±0.5
±0.5
±0.5
±0.25
±3
LSB
±4
±4 LSB
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)
Signal-to-Noise + Distortion Ratio SINAD
70
73
dB
Total Harmonic Distortion
THD Up to the 5th harmonic
-88
-80
dB
Spurious-Free Dynamic Range
SFDR
80
90
dB
Channel-to-Channel Crosstalk
Small-Signal Bandwidth
65kHz, 2.500V_p-p (Note 4)
-3dB rolloff
-85
dB
2.25
MHz
Full-Power Bandwidth
1.0
MHz
CONVERSION RATE
Conversion Time (Note 5)
Internal clock, SHDN = FLOAT
5.5
t_CONV Internal clock, SHDN = V_DD
35
External clock = 2MHz, 12 clocks/conversion
6
7.5
65
µs
Track/Hold Acquisition Time
Aperture Delay
t_ACQ
1.5
µs
30
ns
Aperture Jitter
Internal Clock Frequency
External Clock Frequency
SHDN = FLOAT
SHDN = V_DD
Data transfer only
<50
ps
1.8
0.225
MHz
0.1
2.0
MHz
0
2.0
2 _______________________________________________________________________________________