+2.7V, Low-Power, 4-Channel,
Serial 12-Bit ADCs in QSOP-16
MAX1246/MAX1247
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, 10s) ................................ +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 = 2.5V applied
to VREF pin; T
A
= T
MIN
to T
MAX
; unless otherwise noted.)
PARAMETER
DC ACCURACY
(Note 1)
Resolution
MAX124_A
Relative Accuracy (Note 2)
No Missing Codes
Differential Nonlinearity
Offset Error
Gain Error (Note 3)
Gain Temperature Coefficient
Channel-to-Channel Offset
Matching
MAX124_A/MAX124_B
MAX1247C
Up to the 5th
harmonic
MAX1247C
65kHz, 2.500V
P-P
(Note 4)
-3dB rolloff
MAX124_A/MAX124_B
MAX1247C
80
70
INL
NMC
DNL
MAX124_A/MAX124_B
MAX124_C
MAX124_A
MAX124_B
±0.8
±0.5
±0.5
±0.5
±0.25
±0.25
±3
±4
±4
MAX124_B
MAX1247C
12
±1
12
±0.5
±1.0
±2.0
Bits
LSB
LSB
LSB
ppm/°C
LSB
LSB
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DYNAMIC SPECIFICATIONS
(10kHz sine-wave input, 0V to 2.500Vp-p, 133ksps, 2.0MHz external clock, bipolar input mode)
Signal-to-Noise + Distortion
Ratio
Total Harmonic Distortion
Spurious-Free Dynamic Range
Channel-to-Channel Crosstalk
Small-Signal Bandwidth
Full-Power Bandwidth
SINAD
THD
SFDR
73
73
-88
-88
90
90
-85
2.25
1.0
-80
dB
dB
dB
dB
MHz
MHz
MAX124_A/MAX124_B
2
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
