Datasheet

LTC6803-2/LTC6803-4
6
680324fa
TYPICAL PERFORMANCE CHARACTERISTICS
Cell Voltage Measurement Error
vs Common Mode Voltage
Cell Measurement Error
vs Cell Voltage
Cell 1 Voltage Measurement Error
vs Temperature
Cell 12 Measurement Error vs V
+
Cell 2 Voltage Measurement Error
vs Temperature
Cell 3 to Cell 12 Voltage
Measurement Error vs Temperature
Measurement Gain Error
Hysteresis
Cell Measurement Common Mode
Rejection
Measurement Gain Error
Hysteresis
V
+
– V
C12
(V)
–0.8
–0.6 –0.4
CELL 12 MEASUREMENT ERROR (mV)
1
10
100
–0.2 0 0.2 0.4 0.6 1.00.8
680324 G04
0.1
T
A
= 25°C
V
CELL
= 3.3V
COMMON MODE VOLTAGE (V)
0
CELL MEASUREMENT ERROR (mV)
–8
–6
–4
3
5
680324 G05
–10
–12
–14
1 2 4
–2
0
2
CELL2 ERROR vs V
C1
CELL3 ERROR vs V
C2
CELLn ERROR VS V
Cn–1
,
n = 4 TO 12
V
CELL
= 3.6V
T
A
= 25°C
V
IN
CELL6 (V)
1
CELL VOLTAGE MEASUREMENT ERROR (mV)
10
100
1000
–1.0 –0.2 0.2 0.6
0.1
–0.6
1.0–0.4 0 0.4–0.8 0.8
680324 G06
CELL6
ALL OTHER CELLS = 3V
TEMPERATURE (°C)
–50
–2.00
CELL MEASUREMENT ERROR (mV)
–1.25
0.25
1.00
1.75
–10
30
50 130
680324 G07
–0.50
–30 10
70
90
110
V
CELL
= 0.8V
V
+
= 9.6V
4 SAMPLES
TEMPERATURE (°C)
–50
–2.00
CELL MEASUREMENT ERROR (mV)
–1.25
0.25
1.00
2.50
1.75
–10
30
50 130
680324 G08
–0.50
–30 10
70
90
110
V
CELL
= 0.8V
V
+
= 9.6V
4 SAMPLES
TEMPERATURE (°C)
–50
–2.00
CELL MEASUREMENT ERROR (mV)
–1.25
0.25
1.00
1.75
–10
30
50 130
680324 G09
–0.50
–30 10
70
90
110
V
CELL
= 0.8V
V
+
= 9.6V
4 SAMPLES
CHANGE IN GAIN ERROR (ppm)
–250
NUMBER OF UNITS
25
20
15
10
5
0
–50 150–150 50
680324 G10
200–100 100–200 0
T
A
= 85°C TO 25°C
CHANGE IN GAIN ERROR (ppm)
–250
NUMBER OF UNITS
20
16
12
8
4
18
14
10
6
2
0
–50 150–150 50
680324 G11
200–100 100–200 0
T
A
= –45°C TO 25°C
0
–10
–30
–50
–20
–40
–60
–70
FREQUENCY (Hz)
REJECTION (dB)
680324 G12
10 10k 10M1M100k1k100
V
CM(IN)
= 5V
P-P
72dB REJECTION
CORRESPONDS TO
LESS THAN 1 BIT
AT ADC OUTPUT