MAX11645 Maxim Integrated Products, MAX11645 Datasheet - Page 6

• Manufacturer Part Number: MAX11645
• Description: 2-Wire Serial 12-Bit ADCs
• Manufacturer: Maxim Integrated Products

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
1-/2-Channel, 2-Wire Serial, 12-Bit ADCs
(V
T
6
A
DD
= +25°C, unless otherwise noted.)
-0.4
-0.5
-0.1
-0.2
-0.3
0.5
0.4
0.3
_______________________________________________________________________________________
0.2
0.1
0
= 3.3V (MAX11645), V
0
500
DIFFERENTIAL NONLINEARITY
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
800
750
700
650
600
550
500
450
400
350
300
1000 1500
0
-40
-40
DIGITAL OUTPUT CODE
vs. DIGITAL CODE
MAX11644
INTERNAL REFERENCE MAX11644
MAX11645
EXTERNAL REFERENCE MAX11644
EXTERNAL REFERENCE MAX11645
INTERNAL REFERENCE MAX11645
-25
-25
SHUTDOWN SUPPLY CURRENT
2000 2500 3000 3500
-10
-10
vs. TEMPERATURE
vs. TEMPERATURE
SUPPLY CURRENT
TEMPERATURE (°C)
TEMPERATURE (°C)
5
5
DD
20
20
= 5V (MAX11644), f
35
35
SETUP BYTE
EXT REF: 10111011
INT REF: 11011011
4000
50
50
65
65
80
80
-0.2
-0.4
-0.6
-0.8
-1.0
1.0
0.8
0.6
0.4
0.2
0
0
SCL
500
= 1.7MHz, 50% duty cycle, f
INTEGRAL NONLINEARITY
1000 1500
DIGITAL OUTPUT CODE
vs. DIGITAL CODE
2000 2500 3000 3500
Typical Operating Characteristics
4000
1000
900
800
700
600
500
400
300
200
100
0.6
0.5
0.4
0.3
0.2
0.1
0
0
2.7
SAMPLE
0
0
CONVERSION RATE (EXTERNAL CLOCK)
SDA = SCL = V
INTERNAL REFERENCE ALWAYS ON
ANALOG SUPPLY CURRENT vs.
SHUTDOWN SUPPLY CURRENT
-100
-120
-140
3.2
-20
-40
-60
-80
20
vs. SUPPLY VOLTAGE
= 94.4ksps, single-ended, unipolar,
CONVERSION RATE (ksps)
0
SUPPLY VOLTAGE (V)
3.7
DD
40
10k
4.2
EXTERNAL REFERENCE
60
FREQUENCY (Hz)
20k
4.7
FFT PLOT
www.DataSheet4U.com
80
f
f
5.2
SAMPLE
IN
30k
= 10kHz
100
= 94.4ksps
40k
50k