MAX1280 Datasheet, PDF (2/24 Pages) Maxim Integrated Products – 400ksps/300ksps, Single-Supply, Low-Power, 8-Channel, Serial 12-Bit ADCs with Internal Reference

400ksps/300ksps, Single-Supply, Low-Power, 8-Channel,
Serial 12-Bit ADCs with Internal Reference
ABSOLUTE MAXIMUM RATINGS
V_{DD_} to GND ............................................................ -0.3V to +6V
V_DD1 to V_DD2 ........................................................ -0.3V to +0.3V
CH0–CH7, COM to GND.......................... -0.3V to (V_DD1 + 0.3V)
REF, REFADJ to GND .............................. -0.3V to (V_DD1 + 0.3V)
Digital Inputs to GND .............................................. -0.3V to +6V
Digital Outputs to GND ............................ -0.3V to (V_DD2 + 0.3V)
Digital Output Sink Current .................................................25mA
Continuous Power Dissipation (T_A = +70°C)
20-Pin TSSOP (derate 7.0mW/°C above +70°C) .........559mW
Operating Temperature Ranges
MAX128_BCUP .................................................. 0°C to +70°C
MAX128_BEUP ............................................... -40°C to +85°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—MAX1280
(V_DD1 = V_DD2 = +4.5V to +5.5V, COM = GND, f_SCLK = 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), external
+2.5V at REF, REFADJ = V_DD1, T_A = T_MIN to T_MAX, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DC ACCURACY (Note 1)
Resolution
12
Bits
Relative Accuracy (Note 2)
INL
±1.0 LSB
Differential Nonlinearity
DNL No missing codes over temperature
±1.0 LSB
Offset Error
±6.0 LSB
Gain Error (Note 3)
±6.0 LSB
Gain-Error Temperature
Coefficient
±0.8
ppm/°C
Channel-to-Channel Offset-Error
Matching
±0.1
LSB
DYNAMIC SPECIFICATIONS (100kHz sine-wave input, 2.5Vp-p, 400ksps, 6.4MHz clock, bipolar input mode)
Signal-to-Noise plus Distortion
Ratio
Total Harmonic Distortion
Spurious-Free Dynamic Range
Intermodulation Distortion
Channel-to-Channel Crosstalk
(Note 4)
SINAD
THD
SFDR
IMD
Up to the 5th harmonic
f_IN1 = 99kHz, f_IN2 = 102kHz
f_IN = 200kHz, V_IN = 2.5Vp-p
70
dB
-81
dB
80
dB
76
dB
-78
dB
Full-Power Bandwidth
Full-Linear Bandwidth
CONVERSION RATE
Conversion Time (Note 5)
Track/Hold Acquisition Time
Aperture Delay
Aperture Jitter
Serial Clock Frequency
Duty Cycle
-3dB point
SINAD > 68dB
t_CONV
t_ACQ
f_SCLK
6
MHz
350
kHz
2.5
µs
468
ns
10
ns
<50
ps
0.5
6.4 MHz
40
60
%
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