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| MAX1261 Datasheet, PDF (2/20 Pages) Maxim Integrated Products – 250ksps, +3V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface | |||
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250ksps, +3V, 8-/4-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
ABSOLUTE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V
VLOGIC to GND.........................................................-0.3V to +6V
CH0âCH7, COM to GND ............................-0.3V to (VDD + 0.3V)
REF, REFADJ to GND ................................-0.3V to (VDD + 0.3V)
Digital Inputs to GND ...............................................-0.3V to +6V
Digital Outputs (D0âD11, INT) to GND...-0.3V to (VLOGIC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
24-Pin QSOP (derate 9.5mW/°C above +70°C) ..........762mW
28-Pin QSOP (derate 8.0mW/°C above +70°C) ..........667mW
Operating Temperature Ranges
MAX1261_C_ _/MAX1263_C_ _ ..........................0°C to +70°C
MAX1261_E_ _/MAX1263_E_ _ .......................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+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 = VLOGIC = +2.7V to +3.6V, COM = GND, REFADJ = VDD, VREF = +2.5V, 4.7µF capacitor at REF pin, fCLK = 4.8MHz (50% duty
cycle); TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
DC ACCURACY (Note 1)
Resolution
SYMBOL
RES
CONDITIONS
MIN TYP MAX UNITS
12
Bits
Relative Accuracy (Note 2)
Differential Nonlinearity
Offset Error
Gain Error
Gain Temperature Coefficient
INL
DNL
MAX126_A
MAX126_B
No missing codes overtemperature
(Note 3)
±2.0
±0.5
±1
±1
±4
±4
LSB
LSB
LSB
LSB
ppm/°C
Channel-to-Channel Offset
Matching
±0.2
LSB
DYNAMIC SPECIFICATIONS (fIN(sine wave) = 50kHz, VIN = 2.5VP-P, 250ksps, external fCLK = 4.8MHz, bipolar input mode)
Signal-to-Noise Plus Distortion SINAD
67
70
dB
Total Harmonic Distortion
(Including 5th-Order Harmonic)
THD
-78
dB
Spurious-Free Dynamic Range SFDR
80
dB
Intermodulation Distortion
Channel-to-Channel Crosstalk
Full-Linear Bandwidth
Full-Power Bandwidth
CONVERSION RATE
Conversion Time (Note 5)
Track/Hold Acquisition Time
Aperture Delay
Aperture Jitter
External Clock Frequency
Duty Cycle
IMD fIN1 = 49kHz, fIN2 = 52kHz
fIN = 125kHz, VIN = 2.5VP-P (Note 4)
SINAD > 68dB
-3dB rolloff
tCONV
tACQ
fCLK
External clock mode
External acquisition/internal clock mode
Internal acquisition/internal clock mode
External acquisition or external clock mode
External acquisition or external clock mode
Internal acquisition/internal clock mode
76
dB
-78
dB
250
kHz
3
MHz
3.3
2.5
3.0
3.5
µs
3.2
3.6
4.1
625
ns
50
ns
<50
ps
<200
0.1
4.8 MHz
30
70
%
2 _______________________________________________________________________________________
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