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DS2740 fiches techniques PDF

Dallas Semiconducotr - High-Precision Coulomb Counter

Numéro de référence DS2740
Description High-Precision Coulomb Counter
Fabricant Dallas Semiconducotr 
Logo Dallas Semiconducotr 





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DS2740 fiche technique
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FEATURES
§ 15-Bit Bidirectional Current Measurement
(DS2740)
§ 1.56mV LSB and ±51.2mV Dynamic
Range
§ 78mA LSB and ±2.56A Dynamic
Range with External 20mW Sense
Resistor (RSNS)
§ 156mA LSB and ±5.12A Dynamic
Range with External 10mW Sense
Resistor (RSNS)
§ 13-Bit Bidirectional Current Measurement
(DS2740B)
§ 6.25mV LSB and ±51.2mV Dynamic
Range
§ 312mA LSB and ±2.56A Dynamic
Range with External 20mW Sense
Resistor (RSNS)
§ 625mA LSB and ±5.12A Dynamic
Range with External 10mW Sense
Resistor (RSNS)
§ Analog Input Filter (IS1, IS2) Extends
Dynamic Range for Pulse-Load
Applications
§ Current Accumulation Register
Resolution
§ 6.25mVhr (Both DS2740 and
DS2740B)
§ 0.3125mAhr with External 20mW
RSNS
§ 0.6250mAhr with External 10mW
RSNS
§ Dallas 1-Wire® Interface
§ Unique 64-Bit Device Address
§ Standard and Overdrive Timings
(OVD)
§ Low Power Consumption:
§ Active Current: 65mA max
§ Sleep Current: 1mA max
DS2740
High-Precision Coulomb Counter
PIN CONFIGURATION
OVD 1
8 VDD
PIO 2
7 DQ
SNS
IS2
3
4
6 VSS
5 IS1
mMAX
(DS2740U, DS2740BU)
See Table 1 for Ordering Information.
See Table 2 for Detailed Pin Descriptions.
PIN DESCRIPTION
OVD- 1-Wire Bus Speed Select
PIO - Programmable I/O Pin
SNS - Sense Resistor Input
IS2 - Current-Sense Input
IS1 - Current-Sense Input
VSS - Device Ground, Current-Sense Resistor
Return
DQ - Data Input/Output
VDD - Power-Supply Input (2.7V to 5.5V)
1-Wire is a registered trademark of Dallas Semiconductor.
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