Datasheet

LTC2941
4
2941fa
Typical perFormance characTerisTics
Total Charge Error
vs Differential Sense Voltage
Total Charge Error
vs Supply Voltage
Total Charge Error vs Temperature
Supply Current vs Supply Voltage
Shutdown Supply Current
vs Supply Voltage
V
SENSE
(mV)
0.1
–1
CHARGE ERROR (%)
0
–2
2
1
1 10 100
2941 G01
–3
3
V
SENSE
+ = 2.7V
V
SENSE
+ = 4.2V
V
SENSE
+
(V)
2.5
CHARGE ERROR (%)
–1.00
–0.50
–0.25
0
1.00
0.25
3.5
4.5
5.0
2941 G02
–0.75
0.50
0.75
3.0
4.0
5.5
6.0
V
SENSE
= –50mV
V
SENSE
= –10mV
TEMPERATURE (°C)
–50
CHARGE ERROR (%)
–1.00
–0.50
–0.25
0
0.50
25
50
2941 G03
–0.75
0.75
1.00
0.25
–25 0
75
100
V
SENSE
= –50mV
V
SENSE
= –10mV
V
SENSE
+
(V)
2.5
I
SUPPLY
(µA)
80
90
100
4.0 5.0
2941 G04
70
60
3.0 3.5
4.5 5.5 6.0
50
40
T
A
= 25°C
T
A
= –40°C
T
A
= 85°C
V
SENSE
+
(V)
2.5
0
I
SHUTDOWN
(µA)
1.0
2.0
3.5
4.5
5.0
2941 G05
0.5
1.5
3.0
4.0
5.5
6.0
T
A
= 25°C
T
A
= –40°C
T
A
= 85°C
Timing Diagram
t
SU, DAT
t
SU, STO
t
SU, STA
t
BUF
t
HD, STA
t
HD, DATO,
t
HD, DATI
t
HD, STA
START
CONDITION
STOP
CONDITION
REPEATED START
CONDITION
START
CONDITION
SDA
SCL
2941 F01
t
of
Figure 1. Definition of Timing on I
2
C Bus