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DS2740U/R

Description
High-Precision Coulomb Counter
Categoryaccessories   
File Size245KB,15 Pages
ManufacturerDALLAS
Websitehttp://www.dalsemi.com
Download Datasheet Compare View All

DS2740U/R Overview

High-Precision Coulomb Counter

DS2740
High-Precision Coulomb Counter
www.maxim-ic.com
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 (R
SNS
)
§
156mA LSB and ±5.12A Dynamic
Range with External 10mW Sense
Resistor (R
SNS
)
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 (R
SNS
)
§
625mA LSB and ±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
§
6.25mVhr (Both DS2740 and
DS2740B)
§
0.3125mAhr with External 20mW
R
SNS
§
0.6250mAhr with External 10mW
R
SNS
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
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.
§
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)
§
§
§
§
1-Wire is a registered trademark of Dallas Semiconductor.
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DS2740U/R Related Products

DS2740U/R DS2740 DS2740B DS2740BU DS2740BU/T&R DS2740U DS2740U/T&R DS2740BU/R DS2740BU/T DS2740U/T
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