Datasheet
Typical Operating Characteristics
(MAX1280: V
DD1
= V
DD2
= 5.0V, f
SCLK
= 6.4MHz; MAX1281: V
DD1
= V
DD2
= 3.0V, f
SCLK
= 4.8MHz; C
LOAD
= 20pF, 4.7µF capacitor
at REF, 0.01µF capacitor at REFADJ, T
A
= +25°C, unless otherwise noted.)
MAX1280/MAX1281
400ksps/300ksps, Single-Supply, Low-Power, 8-Channel,
Serial 12-Bit ADCs with Internal Reference
8 _______________________________________________________________________________________
0 1500 2000500 1000 2500 3000 3500 4000 4500
INTEGRAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
MAX1280/1-01
DIGITAL OUTPUT CODE
INL (LSB)
-0.1
-0.3
0.1
0.3
0.5
-0.2
0
0.2
0.4
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0 1000500 1500 2000 2500 3000 3500 4000 4500
DIFFERENTIAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
MAX1280/1-02
DNL (LSB)
DIGITAL OUTPUT CODE
3.5
3.0
2.5
2.0
1.5
2.5 4.03.0 3.5 4.5 5.0 5.5
SUPPLY CURRENT vs. SUPPLY
VOLTAGE (CONVERTING)
MAX1280/1-03
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
2.0
2.4
2.2
2.8
2.6
3.0
3.2
-40 20 40-20 0 60 80 100
SUPPLY CURRENT vs. TEMPERATURE
MAX1280/1-04
TEMPERATURE (
°
C)
SUPPLY CURRENT (mA)
MAX1281
MAX1280
NORMAL OPERATION (PD1 = PD0 = 1)
REDP (PD1 = 1, PD0 = 0)
FASTDP (PD1 = 0, PD0 = 1)
0
0.5
1.5
1.0
2.0
2.5
2.5 3.53.0 4.0 4.5 5.0 5.5
SUPPLY CURRENT vs. SUPPLY
VOLTAGE (STATIC)
MAX1280/1-05
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
0
0.5
1.5
1.0
2.0
2.5
-40 0-20 20406080100
SUPPLY CURRENT vs. TEMPERATURE
(STATIC)
MAX1280/1-06
TEMPERATURE (
°
C)
SUPPLY CURRENT (mA)
MAX1280 (PD1 = 1, PD0 = 1)
MAX1280 (PD1 = 1, PD0 = 0)
MAX1280 (PD1 = 0, PD0 = 1)
MAX1281 (PD1 = 1, PD0 = 1)
MAX1281 (PD1 = 1, PD0 = 0)
MAX1281 (PD1 = 0, PD0 = 1)
0
1
3
2
4
5
2.5 3.53.0 4.0 4.5 5.0 5.5
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1280/1-07
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (µA)
(PD1 = PD0 = 0)
0
0.5
1.5
1.0
2.0
2.5
-40 0-20 20406080100
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX1280/1-08
TEMPERATURE (°C)
SHUTDOWN CURRENT (µA)
MAX1281
MAX1280
(PD1 = PD0 = 0)
2.4995
2.4997
2.5001
2.4999
2.5003
2.5005
2.5 3.53.0 4.0 4.5 5.0 5.5
REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
MAX1280/1-09
SUPPLY VOLTAGE (V)
REFERENCE VOLTAGE (V)