Rainbow Electronics DS2781 User Manual
Page 3
DS2781: Two-Cell Standalone Fuel Gauge IC
3 of 30
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Voltage Full-Scale
V
FS
0
9.9902 V
Voltage Error
V
ERR
±100 mV
Current Resolution
I
LSB
1.56
µV
Current Full-Scale
I
FS
±51.2 mV
Current Gain Error
I
GERR
(Note
2)
±1
% Full-
Scale
Current Offset Error
I
OERR
0°C ≤ T
A
≤ +70°C,
(Note 4)
- 7.82
+ 12.5
µV
Accumulated Current Offset
q
OERR
0°C ≤ T
A
≤ +70°C,
VSNS = VSS (Notes 3, 4)
- 188
+ 0
µVhr/
day
T
A
= +25°C, V
PLS
= 7.6V
±1
Timebase Error
t
ERR
±2
%
ELECTRICAL CHARACTERISTICS: 1-WIRE INTERFACE, STANDARD
(V
PLS
= 2.5V to 10V, T
A
= -20°C to +70°C.)
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Time Slot
t
SLOT
60
120
ms
Recovery Time
t
REC
1
ms
Write-0 Low Time
t
LOW0
60
120
ms
Write-1 Low Time
t
LOW1
1
15
ms
Read Data Valid
t
RDV
15
ms
Reset Time High
t
RSTH
480
ms
Reset Time Low
t
RSTL
480
960
ms
Presence Detect High
t
PDH
15
60
ms
Presence Detect Low
t
PDL
60
240
ms
ELECTRICAL CHARACTERISTICS: 1-WIRE INTERFACE, OVERDRIVE
(V
PLS
= 2.5V to 10V, T
A
= -20°C to +70°C.)
PARAMETER SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Time Slot
t
SLOT
6
16
ms
Recovery Time
t
REC
1
ms
Write-0 Low Time
t
LOW0
6
16
ms
Write-1 Low Time
t
LOW1
1
2
ms
Read Data Valid
t
RDV
2
ms
Reset-Time High
t
RSTH
48
ms
Reset-Time Low
t
RSTL
48
80
ms
Presence-Detect High
t
PDH
2
6
ms
Presence-Detect Low
t
PDL
8
24
ms