Owner manual

MAX1136–MAX1139
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial 10-Bit ADCs
6 _______________________________________________________________________________________
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.)
-0.3
-0.1
-0.2
0.1
0
0.2
0.3
0 1000
DIFFERENTIAL NONLINEARITY
vs. DIGITAL CODE
MAX1136 toc01
DIGITAL OUTPUT CODE
DNL (LSB)
400200 600 800
-0.5
-0.2
-0.3
-0.4
-0.1
0
0.1
0.2
0.3
0.4
0.5
0400200 600 800 1000
INTEGRAL NONLINEARITY
vs. DIGITAL CODE
MAX1136 toc02
DIGITAL OUTPUT CODE
INL (LSB)
-160
-140
-120
-100
-80
-60
-40
-20
0
0 10k 20k 30k 40k 50k
FFT PLOT
MAX1136 toc03
FREQUENCY (Hz)
AMPLITUDE (dBc)
f
SAMPLE
= 94.4ksps
f
IN
= 10kHz
300
400
350
500
450
600
550
650
750
700
800
-40 -10 5-25 20 35 50 65 80
SUPPLY CURRENT vs. TEMPERATURE
(MAX1138/MAX1139)
MAX1136 toc04
TEMPERATURE (
°
C)
SUPPLY CURRENT (µA)
INTERNAL REFERENCE
MAX1138/1136
MAX1139/1137
MAX1138/1136
MAX1139/1137
INTERNAL REFERENCE
EXTERNAL REFERENCE
EXTERNAL REFERENCE
SETUP BYTE
EXT REF: 10111011
INT REF: 11011011
0
0.2
0.1
0.4
0.3
0.5
0.6
2.7 5.2
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1136 toc05
INPUT VOLTAGE (V)
I
DD
(µA)
3.73.2 4.2 4.7
SDA = SCL = V
DD
0
0.10
0.05
0.20
0.15
0.30
0.25
0.35
0.45
0.40
0.50
-40 -10 5
-25
20 35 50 65 80
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX1136 toc06
TEMPERATURE (
°
C)
SUPPLY CURRENT (µA)
MAX1138
MAX1139
200
300
250
350
400
450
500
550
600
650
700
750
800
02030406080100
AVERAGE SUPPLY CURRENT vs.
CONVERSION RATE (EXTERNAL CLOCK)
MAX1136 toc07
CONVERSION RATE (ksps)
AVERAGE I
DD
(µA)
010 50 70 90
A
B
A) INTERNAL REFERENCE ALWAYS ON
B) EXTERNAL REFERENCE
MAX1138
0.9990
0.9994
0.9992
0.9998
0.9996
1.0002
1.0000
1.0004
1.0008
1.0006
1.0010
-40 -10 5-25 20 35 50 65 80
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1136 toc08
TEMPERATURE (°C)
V
REF
NORMALIZED
MAX1138
MAX1139
NORMALIZED TO REFERENCE VALUE
AT +25
°
C
0.99990
0.99994
0.99992
0.99998
0.99996
1.00002
1.00000
1.00004
1.00008
1.00006
1.00010
2.7 3.3 3.6 3.93.0 4.2 4.5 4.8 5.1 5.4
NORMALIZED REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
MAX1136 toc09
V
DD
(V)
V
REF
NORMALIZED
MAX1138/MAX1136,
NORMALIZED TO
REFERENCE VALUE AT
V
DD
= 5V
MAX1139/MAX1137,
NORMALIZED TO
REFERENCE VALUE AT
V
DD
= 3.3V