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| MAX1280 Datasheet, PDF (4/24 Pages) Maxim Integrated Products – 400ksps/300ksps, Single-Supply, Low-Power, 8-Channel, Serial 12-Bit ADCs with Internal Reference | |||
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400ksps/300ksps, Single-Supply, Low-Power, 8-Channel,
Serial 12-Bit ADCs with Internal Reference
ELECTRICAL CHARACTERISTICSâMAX1280 (continued)
(VDD1 = VDD2 = +4.5V to +5.5V, COM = GND, fSCLK = 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), external
+2.5V at REF, REFADJ = VDD1, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
POWER SUPPLY
Positive Supply Voltage
(Note 9)
Supply Current
Supply Current
Power-Supply Rejection
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
VDD1,
VDD2
4.5
5.5
V
Operating mode (Note 10)
2.5
4.0
IVDD1 + VDD1 =
Reduced-power mode (Note 11)
IVDD2 VDD2 = 5.5V Fast power-down (Note 11)
1.3
2.0
mA
0.9
1.5
Full power-down (Note 11)
2
10
µA
PSR VDD1 = VDD2 = 5V ±10%, midscale input
±0.5 ±2.0
mV
ELECTRICAL CHARACTERISTICSâMAX1281
(VDD1 = VDD2 = +2.7V to +3.6V, COM = GND, fSCLK = 4.8MHz, 50% duty cycle, 16 clocks/conversion cycle (300ksps), external
+2.5V at REF, REFADJ = VDD1, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +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
±1.6
ppm/°C
Channel-to-Channel Offset-
Error Matching
±0.2
LSB
DYNAMIC SPECIFICATIONS (75kHz sine-wave input, 2.5Vp-p, 300ksps, 4.8MHz clock, bipolar input mode)
Signal-to-Noise plus
Distortion Ratio
SINAD
70
dB
Total Harmonic Distortion
Spurious-Free Dynamic
Range
THD
SFDR
Up to the 5th harmonic
-81
dB
80
dB
Intermodulation Distortion
IMD
Channel-to-Channel Crosstalk
(Note 4)
Full-Power Bandwidth
Full-Linear Bandwidth
fIN1 = 73kHz, fIN2 = 77kHz
fIN = 150kHz, VIN = 2.5Vp-p
-3dB point
SINAD > 68dB
76
dB
-78
dB
3
MHz
250
kHz
4 _______________________________________________________________________________________
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