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LTC6820 Datasheet(PDF) 11 Page - Analog Devices

Part # LTC6820
Description  12-Cell Battery Stack Monitors
PDF  92 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC6820 Datasheet(HTML) 11 Page - Analog Devices

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LTC6811-1/LTC6811-2
11
Rev. C
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Measurement Gain Error
Hysteresis, Hot
Measurement Gain Error
Hysteresis, Cold
Noise Filter Response
Measurement Error vs VREG
Measurement Error vs V+
Top Cell Measurement Error vs V+
Measurement Error vs Common
Mode Voltage
Measurement Error Due to a
VREG AC Disturbance
Measurement Error Due to a V+
AC Disturbance
TA = 85°C TO 25°C
CHANGE IN GAIN ERROR (ppm)
–40 –20
0
20
40
60
80
100
0
10
20
30
40
50
68111 G10
TA = –40°C TO 25°C
CHANGE IN GAIN ERROR (ppm)
–75
–50
–25
0
25
50
75
0
5
10
15
20
25
30
35
40
45
68111 G11
INPUT FREQUENCY (Hz)
10
100
1k
10k
100k
1M
–70
–60
–50
–40
–30
–20
–10
0
68111 G12
26Hz
2kHz
14kHz
422Hz
3kHz
27kHz
1kHz
7kHz
VIN = 2V
VIN = 3.3V
VIN = 4.2V
VREG (V)
4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
68111 G13
MEASUREMENT ERROR OF
CELL1 WITH 3.3V INPUT
VREG GENERATED FROM
DRIVE PIN, FIGURE 28
V+ (V)
5
10
15
20
25
30
35
40
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
68111 G14
C12–C11 = 3.3V
C12 = 39.6V
V+ (V)
36
38
40
42
44
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
68111 G15
C12 – C11 = 3.3V
V+ = 43.3V
C11 VOLTAGE (V)
0
5
10
15
20
25
30
35
40
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
68111 G16
VREG(DC) = 5V
VREG(AC) = 0.5Vp–p
1BIT CHANGE < –70dB
FREQUENCY (Hz)
100
1k
10k
100k
1M
10M
–80
–70
–60
–50
–40
–30
–20
–10
0
68111 G17
V+DC = 39.6V
V+AC = 5Vp–p
1BIT CHANGE < –90dB
VREG GENERATED FROM
DRIVE PIN, FIGURE 28
FREQUENCY (Hz)
100
1k
10k
100k
1M
10M
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
68111 G18
TA = 25°C, unless otherwise noted.



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