
MAX1167/MAX1168
Multichannel, 16-Bit, 200ksps Analog-to-Digital
Converters
_______________________________________________________________________________________
9
Typical Operating Characteristics (continued)
(AVDD = DVDD = +5V, fSCLK = 4.8MHz, CDOUT = 30pF, external VREF = +4.096V, TA = +25°C, unless otherwise noted.)
OFFSET ERROR vs. SUPPLY VOLTAGE
MAX1167/68
toc17
AVDD (V)
OFFSET
ERROR
(μ
V)
5.15
4.85
5.05
4.95
200
100
0
-100
-200
-300
-400
4.75
5.25
VREF = +4.096V
GAIN ERROR vs. SUPPLY VOLTAGE
MAX1167/68
toc18
AVDD (V)
GAIN
ERROR
(%FSR)
5.15
4.85
5.05
4.95
0.05
0.04
0.03
0.02
0.01
0
-0.01
-0.02
4.75
5.25
VREF = +4.096V
OFFSET ERROR vs. TEMPERATURE
MAX1167/68
toc19
TEMPERATURE (
°C)
OFFSET
ERROR
(μ
V)
60
35
10
-15
200
150
100
50
0
-50
-100
-150
-40
85
VREF = +4.096V
GAIN ERROR vs. TEMPERATURE
MAX1167/68
toc20
TEMPERATURE (
°C)
GAIN
ERROR
(%FSR)
60
35
10
-15
0
-0.001
-0.002
-0.003
-0.004
-0.005
-40
85
VREF = +4.096V
CHANNEL-TO-CHANNEL ISOLATION
vs. FREQUENCY
MAX1167/68
toc21
FREQUENCY (kHz)
ISOLATION
(dB)
80
60
40
20
0
-20
-40
-60
-80
-100
-120
0
100
INTERNAL +4.096V REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
MAX1167/68
toc22
AVDD (V)
V
REF
(V)
5.15
5.05
4.95
4.85
4.092
4.096
4.100
4.104
4.088
4.75
5.25
DVDD = +5V
TA = 0
°C
TA = -40
°C
TA = +85
°C
TA = +25
°C
TA = +70
°C
EXTERNAL REFERENCE INPUT CURRENT
vs. EXTERNAL REFERENCE VOLTAGE
MAX1167/68
toc23
VREF (V)
I REF
(μ
A)
5.0
4.5
2.5
3.0
3.5
4.0
20
40
60
80
100
120
140
160
0
2.0
5.5
VAIN = 0
fSCLK = 4.8MHz
AVDD = DVDD = +5V
199ksps, EXTERNAL CLOCK
87.19ksps, INTERNAL CLOCK
INTERNAL REFERENCE VOLTAGE
vs. REF LOAD
MAX1167/68
toc24
IREF (mA)
V
REF
(V)
12
10
6
8
4
2
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
014
fSCLK = 0
INTERNAL REFERENCE MODE
LOAD APPLIED TO REF
CREF = 1
μF
INTERNAL CLOCK CONVERSION TIME
(8th RISING SCLK TO FALLING EOC)
MAX1167/68
toc25
NUMBER OF SCAN-MODE CONVERSIONS
t CONV
(ms)
8
7
6
5
4
3
2
10
20
30
40
50
60
70
0
1
fSCLK = 4.8MHz
8-BIT DATA-TRANSFER MODE
16-BIT DATA-TRANSFER MODE
6
10
12
17 17
24
22
31
28
39
33
46
38
53
44
60