ltc6803g-3 Linear Technology Corporation, ltc6803g-3 Datasheet - Page 6

• Manufacturer Part Number: ltc6803g-3
• Description: Ltc6803-1/ltc6803-3 - Multicell Battery Stack Monitor
• Manufacturer: Linear Technology Corporation

LTC6803-1/LTC6803-3
TYPICAL PERFORMANCE CHARACTERISTICS
6
–0.50
–2.00
–1.25
1.75
1.00
0.25
100
0.1
25
20
15
10
10
5
0
–250
1
–0.8 –0.6 –0.4
–50
Cell 12 Measurement Error vs V
Cell 1 Voltage Measurement Error
vs Temperature
Measurement Gain Error
Hysteresis
T
A
–200
–30
= 85°C TO 25°C
CHANGE IN GAIN ERROR (ppm)
–150
–10
–100
TEMPERATURE (°C)
–0.2 0
10
V
+
–50
30
– V
C12
0.2 0.4 0.6
50
0
(V)
70
50
V
V
4 SAMPLES
T
V
A
CELL
+
100
CELL
90 110
= 9.6V
= 25°C
= 0.8V
= 3.3V
680313 G07
150
680313 G04
680313 G10
0.8
+
200
130
1.0
–0.50
–2.00
–1.25
1.00
0.25
2.50
1.75
–10
–12
–14
–2
–6
–8
20
18
16
14
12
10
–4
2
0
8
6
4
2
0
–250
–50
0
Cell Voltage Measurement Error
vs Common Mode Voltage
Cell 2 Voltage Measurement Error
vs Temperature
Measurement Gain Error
Hysteresis
T
A
–200
–30
= –45°C TO 25°C
CHANGE IN GAIN ERROR (ppm)
–150
COMMON MODE VOLTAGE (V)
–10
1
–100
TEMPERATURE (°C)
10
2
–50
30
CELL2 ERROR vs V
CELL3 ERROR vs V
CELLn ERROR VS V
n = 4 TO 12
V
T
CELL
A
= 25°C
50
0
= 3.6V
3
70
50
V
V
4 SAMPLES
100
CELL
+
90 110
= 9.6V
4
= 0.8V
680313 G05
150
C1
C2
680313 G08
680313 G11
Cn–1
,
130
200
5
–0.50
–2.00
1000
–1.25
1.00
1.75
0.25
100
0.1
–10
–20
–30
–40
–50
–60
–70
10
1
–1.0
0
–50
10
Cell Measurement Error
vs Cell Voltage
Cell 3 to Cell 12 Voltage
Measurement Error vs Temperature
Cell Measurement Common Mode
Rejection
ALL OTHER CELLS = 3V
V
72dB REJECTION
CORRESPONDS TO
LESS THAN 1 BIT
AT ADC OUTPUT
V
V
4 SAMPLES
–0.8
CM(IN)
CELL
+
–30
= 9.6V
100
–0.6
= 0.8V
–10
= 5V
–0.4
CELL6
TEMPERATURE (°C)
P-P
10
1k
FREQUENCY (Hz)
V
–0.2
IN
30
CELL6 (V)
10k
0
50
0.2
100k
70
0.4
90 110
0.6
1M
680313 G06
680313 G09
680313 G12
0.8
680313f
10M
130
1.0