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DS2740BU/T&R Datasheet

  • DS2740BU/T&R

  • High-Precision Coulomb Counter

  • 15頁(yè)

  • DALLAS   DALLAS

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DS2740
High-Precision Coulomb Counter
www.maxim-ic.com
FEATURES
摟
15-Bit Bidirectional Current Measurement
(DS2740)
摟
1.56mV LSB and 鹵51.2mV Dynamic
Range
摟
78mA LSB and 鹵2.56A Dynamic
Range with External 20mW Sense
Resistor (R
SNS
)
摟
156mA LSB and 鹵5.12A Dynamic
Range with External 10mW Sense
Resistor (R
SNS
)
13-Bit Bidirectional Current Measurement
(DS2740B)
摟
6.25mV LSB and 鹵51.2mV Dynamic
Range
摟
312mA LSB and 鹵2.56A Dynamic
Range with External 20mW Sense
Resistor (R
SNS
)
摟
625mA LSB and 鹵5.12A Dynamic
Range with External 10mW Sense
Resistor (R
SNS
)
Analog Input Filter (IS1, IS2) Extends
Dynamic Range for Pulse-Load
Applications
Current Accumulation Register
Resolution
摟
6.25mVhr (Both DS2740 and
DS2740B)
摟
0.3125mAhr with External 20mW
R
SNS
摟
0.6250mAhr with External 10mW
R
SNS
Dallas 1-Wire
廬
Interface
摟
Unique 64-Bit Device Address
摟
Standard and Overdrive Timings
(OVD)
Low Power Consumption:
摟
Active Current: 65mA max
摟
Sleep Current: 1mA max
PIN CONFIGURATION
OVD
PIO
SNS
IS2
1
2
3
4
8
7
6
5
V
DD
DQ
V
SS
IS1
mMAX
(DS2740U, DS2740BU)
See Table 1 for Ordering Information.
See Table 2 for Detailed Pin Descriptions.
摟
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
V
SS
- Device Ground, Current-Sense Resistor
Return
DQ - Data Input/Output
V
DD
- Power-Supply Input (2.7V to 5.5V)
摟
摟
摟
摟
1-Wire is a registered trademark of Dallas Semiconductor.
1 of 15
033103

DS2740BU/T&R 產(chǎn)品屬性

  • Maxim Integrated Products

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