DS2786B Maxim Integrated Products, DS2786B Datasheet - Page 8

• Manufacturer Part Number: DS2786B
• Description: Stand-Alone OCV-Based Fuel Gauge
• Manufacturer: Maxim Integrated Products

Stand-Alone OCV-Based Fuel Gauge
The DS2786B uses a sigma-delta A/D converter to
make measurements. The measurement sequence
shown in Figure 4 repeats continuously while the
DS2786B is in Active Mode. The V
t
Figure 4. Measurement Sequence
8
PRE
TEMPERATURE REGISTER
ALTERNATING AIN0 OR
_______________________________________________________________________________________
AIN1/TEMPERATURE
before the AIN0 and AIN1 conversion to allow for
MEASUREMENT
MEASUREMENT
MEASUREMENT
DIFFERENTIAL
AIN0 OR AIN1/
REGISTER
REGISTER
CURRENT
CURRENT
VOLTAGE
V
OUT
V
IN
PIN
PIN
Parameter Measurement
0.86ms
DELAY
NEW REGISTER VALUE
AVERAGE OVER 440ms
INACTIVE
440ms
OUT
pin is activated
t
PRE
CYCLE OF MEASUREMENTS REPEATS EVERY 880ms.
(INACTIVE FOR TEMPERATURE MEASUREMENT)
0.86ms
DELAY
NEW REGISTER VALUE
AVERAGE OVER 220ms
the V
configured to measure temperature using its on-chip
sensor instead of the AIN1 input. When the internal tem-
perature measurement uses the AIN1 conversion time-
slot, V
measurements nominally takes 1760ms to complete.
ACTIVE
220ms
OUT
OUT
output voltage to settle. The DS2786B can be
is not activated. A full sequence of voltage
0.86ms
DELAY
NEW REGISTER VALUE
AVERAGE OVER 220ms
220ms
INACTIVE
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0.86ms
DELAY