Linear Technology LTC6804-1 - Page 12

LTC6804-1/LTC6804-2
12
680412fc
For more information www.linear.com/LTC6804-1
Typical perForMance characTerisTics
Cell Measurement Error
vs Common Mode Voltage
Cell Measurement CMRR
vs Frequency Measurement Error vs V
+
Sleep Supply Current vs V
+
Standby Supply Current vs V
+
REFUP Supply Current vs V
+
T
A
= 25°C, unless otherwise noted.
C11 VOLTAGE (V)
0
–1.0
CELL 12 MEASUREMENT ERROR (mV)
–0.8
–0.4
–0.2
0
1.0
0.4
10 20
680412 G19
–0.6
0.6
0.8
0.2
30
C12-C11 = 3.3V
V
+
= 39.6V
FREQUENCY (Hz)
100
–90
REJECTION (dB)
–80
–60
–50
–40
10k
1M
10M
0
680412 G20
–70
1k 100k
–30
–20
–10
V
CM(IN)
= 5V
P-P
NORMAL MODE CONVERSIONS
V
+
(V)
5
MEASUREMENT ERROR (mV)
1.5
20
680412 G21
0
–1.0
10 15 25
–1.5
–2.0
2.0
1.0
0.5
–0.5
30 35 40
MEASUREMENT ERROR OF
CELL 1 WITH 3.3V INPUT.
V
REG
GENERATED FROM
DRIVE PIN, FIGURE 28
V
+
(V)
5 15
2
SLEEP SUPPLY CURRENT (µA)
4
7
25
45
55
680412 G22
3
6
5
35
65
75
125°C
85°C
25°C
–45°C
SLEEP SUPPLY CURRENT =
V
+
CURRENT + V
REG
CURRENT
V
+
(V)
155
40
STANDBY SUPPLY CURRENT (µA)
50
80
25
45
55
680412 G23
70
60
35
65
75
125°C
85°C
25°C
–45°C
STANDBY SUPPLY CURRENT =
V
+
CURRENT + V
REG
CURRENT
V
+
(V)
155
850
REFUP SUPPLY CURRENT (µA)
1000
25
45
55
680412 G24
950
900
35
65
75
125°C
85°C
25°C
–45°C
REFUP SUPPLY CURRENT =
V
+
CURRENT + V
REG
CURRENT
Measure Mode Supply Current
vs V
+
Measurement Time vs Temperature
Internal Die Temperature
Measurement Error vs Temperature
V
+
(V)
5
MEASURE MODE SUPPLY CURRENT (mA)
12.00
12.25
12.50
35 55
680412 G25
11.75
11.50
15 25
45 65 75
11.25
11.00
125°C
85°C
25°C
–45°C
MEASURE MODE SUPPLY CURRENT =
V
+
CURRENT + V
REG
CURRENT
TEMPERATURE (°C)
–50
MEASUREMENT TIME (µs)
2420
25
680412 G26
2360
2320
–25 0 50
2300
2280
2440
2400
2380
2340
75 100 125
V
REG
= 5V
V
REG
= 4.5V
V
REG
= 5.5V
12 CELL NORMAL MODE TIME
SHOWN. ALL ADC MEASURE
TIMES SCALE PROPORTIONALLY
TEMPERATURE (°C)
–50
–10
TEMPERATURE MEASUREMENT ERROR (DEG)
–8
–4
–2
0
10
4
0
50
75 100
680412 G27
–6
6
8
2
–25
25
125
5 TYPICAL UNITS