MAX1136_09 Datasheet, PDF (6/22 Pages) Maxim Integrated Products – 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial 10-Bit ADCs

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial 10-Bit ADCs
Typical Operating Characteristics
(V_DD = 3.3V (MAX1137/MAX1139), V_DD = 5V (MAX1136/MAX1138), f_SCL = 1.7MHz, external clock, f_SAMPLE = 94.4ksps, single-
ended, unipolar, T_A = +25°C, unless otherwise noted.)
DIFFERENTIAL NONLINEARITY
vs. DIGITAL CODE
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
0
200 400 600 800 1000
DIGITAL OUTPUT CODE
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
INTEGRAL NONLINEARITY
vs. DIGITAL CODE
200 400 600 800 1000
DIGITAL OUTPUT CODE
0
-20
-40
-60
-80
-100
-120
-140
-160
0
FFT PLOT
f_SAMPLE = 94.4ksps
f_IN = 10kHz
10k 20k 30k 40k 50k
FREQUENCY (Hz)
SUPPLY CURRENT vs. TEMPERATURE
800
750
INTERNAL REFERENCE
MAX1138/1136
700
SETUP BYTE
650
EXT REF: 10111011
600
INT REF: 11011011
INTERNAL REFERENCE
MAX1139/1137
550
500 EXTERNAL REFERENCE MAX1138/1136
450
400 _{EXTERNAL REFERENCE}
350
MAX1139/1137
300
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
AVERAGE SUPPLY CURRENT vs.
CONVERSION RATE (EXTERNAL CLOCK)
800
750
A) INTERNAL REFERENCE ALWAYS ON
B) EXTERNAL REFERENCE
700
A
650
600
550
500
B
450
400
350
300
250
MAX1138
200
0 10 20 30 40 50 60 70 80 90 100
CONVERSION RATE (ksps)
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
0.6
SDA = SCL = V_DD
0.5
0.4
0.3
0.2
0.1
0
2.7 3.2 3.7 4.2 4.7 5.2
INPUT VOLTAGE (V)
1.0010
1.0008
1.0006
1.0004
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
NORMALIZED TO REFERENCE VALUE
AT +25°C
MAX1138
1.0002
1.0000
0.9998
0.9996
0.9994
0.9992
MAX1139
0.9990
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
0.50
0.45
0.40 ^MAX1138
0.35
0.30
0.25
0.20
MAX1139
0.15
0.10
0.05
0
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
1.00010
1.00008
1.00006
1.00004
NORMALIZED REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
MAX1138/MAX1136,
NORMALIZED TO
REFERENCE VALUE AT
V_DD = 5V
1.00002
1.00000
0.99998
0.99996
0.99994
0.99992
MAX1139/MAX1137,
NORMALIZED TO
REFERENCE VALUE AT
V_DD = 3.3V
0.99990
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4
V_DD (V)
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