MAX14920 Datasheet, PDF (7/29 Pages) Maxim Integrated Products – High-Accuracy 12-/16-Cell Measurement AFEs

MAX14920 / MAX14921
High-Accuracy 12-/16-Cell Measurement AFEs
Typical Operating Characteristics
(V_CVn - V_{CV(n - 1)} = +3.3V (where n = 1–12 (MAX14920) and n = 1–16 (MAX14921)), T_A = +25°C, unless otherwise noted.)
IP vs. VP
60
SAMPLE MODE
50 ^{LDO DISABLED}
40
TA = +25°C ^{TA = +85°C}
30 _{TA = -40°C}
20
10
0
5
25
45
65
VP (V)
VOLTAGE ERROR vs. CELL VOLTAGE
0.4
VCVn-1 = 40V
0.3
0.2
0.1
VCVn-1 = 60V
0
VCVn-1 = 20V
-0.1
VCVn-1 = 0V
-0.2
-0.3
-0.4
0.5
tSAMPLE = 4ms
1.5
2.5
3.5
4.5
CELL VOLTAGE (V)
200
180
160
140
120
100
80
60
40
20
0
0
T_ ON-RESISTANCE vs. VT_
IT_ = 0.1mA
1
2
3
4
5
VT_ (V)
IP vs. TEMPERATURE
60
SAMPLE MODE
LDO DISABLED
50
40
VP = 65V
VP = 24V VP = 6V
30
20
10
0
-40 -15
10
35
60
85
TA (°C)
VAOUT SETTLING TIME
vs. TEMPERATURE
6
5
4
3
2
tSAMPLE = 4ms
1
V_CVn - V_CVn-1 = 1.5V
VP = 24V
SETTLE TO 1mV
0
-40 -15
10
35
60
85
TA (°C)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
VBAn - VCVn-1 vs. IBAn
V_OH
VCVn - VCVn-1 = 3.3V
1
2
3
4
5
IBAn (mA)
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
LDO OUTPUT VOLTAGE CHANGE
vs. LOAD CURRENT
VP = 10V
2
4
6
8
10
IOUT (mA)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-40
VAOUT DROOP TIME
vs. TEMPERATURE
tSAMPLE = 4ms
VCVn - VCVn-1 = 1.5V
VP = 24V
-15 10
35
60
85
TA (°C)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-40
VL SUPPLY CURRENT
vs. TEMPERATURE
SAMPL = VL
VL = 5V
VL = 3.3V
VL = 1.8V
-15 10
35
60
85
TA (°C)
Maxim Integrated
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