MAX11646 Datasheet, PDF (6/20 Pages) Maxim Integrated Products – 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 1-/2-Channel, 2-Wire Serial, 10-Bit ADCs

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
1-/2-Channel, 2-Wire Serial, 10-Bit ADCs
Typical Operating Characteristics
(V_DD = 3.3V (MAX11647), V_DD = 5V (MAX11646), f_SCL = 1.7MHz, external clock, f_SAMPLE = 94.4ksps, single-ended, unipolar,
T_A = +25°C, unless otherwise noted.)
DIFFERENTIAL NONLINEARITY
vs. DIGITAL OUTPUT 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 OUTPUT 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
700
650
SETUP BYTE
EXT REF: 10111011
600 ^{INT REF: 11011011}
550 ^{INTERNAL REFERENCE}
MAX11646
MAX11647
500 EXTERNAL REFERENCE
MAX11646
450
400 _{EXTERNAL REFERENCE}
350
MAX11647
300
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
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
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
0.50
0.45
0.40
MAX11646
0.35
0.30
0.25
0.20
0.15
MAX11647
0.10
0.05
0
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
AVERAGE SUPPLY CURRENT
vs. CONVERSION RATE (EXTERNAL CLOCK)
1000
900
A) INTERNAL REFERENCE ALWAYS ON
B) EXTERNAL REFERENCE
A
800
700
600
B
500
400
300
200
100
0
0
20
40
60
80
100
CONVERSION RATE (ksps)
1.0010
1.0008
1.0006
1.0004
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
NORMALIZED TO REFERENCE VALUE
T_A = +25°C
MAX11646
1.0002
1.0000
0.9998
0.9996
0.9994
0.9992
MAX11647
0.9990
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
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