2760A25 查看數據表（PDF） - Maxim Integrated
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2760A25 Datasheet PDF : 25 Pages
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ELECTRICAL CHARACTERISTICS:
1-WIRE INTERFACE
PARAMETER
SYMBOL MIN
Time Slot
tSLOT
60
Recovery Time
tREC
1
Write 0 Low Time
tLOW0
60
Write 1 Low Time
tLOW1
1
Read Data Valid
tRDV
Reset Time High
tRSTH
480
Reset Time Low
tRSTL
480
Presence Detect High
tPDH
15
Presence Detect Low
tPDL
60
SWAP timing pulse width
tSWL
0.2
SWAP timing pulse
tSWOFF
0
falling edge to DC release
SWAP timing pulse rising tSWON
0
edge to DC engage
DQ Capacitance
CDQ
DS2760
(-20°C to +70°C; 2.5V £ VDD £ 5.5V)
TYP
MAX UNITS NOTES
120
ms
ms
120
ms
15
ms
15
ms
ms
960
ms
60
ms
240
ms
120
ms
1
ms
12
1
ms
12
60
pF
EEPROM RELIABILITY SPECIFICATION
PARAMETER
SYMBOL MIN
Copy to EEPROM Time
tEEC
EEPROM Copy Endurance
NEEC
25000
(-20°C to +70°C; 2.5V £ VDD £ 5.5V)
TYP
MAX UNITS NOTES
2
10
ms
cycles
11
NOTES
1) All voltages are referenced to VSS.
2) See “Ordering Information” section of datasheet to determine corresponding part number for each VOV value.
3) Internal current sense resistor configuration.
4) External current sense resistor configuration.
5) Self heating due to output pin loading and sense resistor power dissipation can alter the reading from ambient conditions.
6) Voltage offset measurement is with respect to VOV at +25°C.
7) The current register supports measurement magnitudes up to 2.56A using the internal sense resistor option and 64mV with
the external resistor option. Compensation of the internal sense resistor value for process and temperature variation can
reduce the maximum reportable magnitude to 1.9A.
8) Current offset error null to ±1LSB typically requires 3.5s in-system calibration by user.
9) Current gain error specification applies to gain error in converting the voltage difference at IS1 and IS2, and excludes any
error remaining after the DS2760 compensates for the internal sense resistor’s temperature coefficient of 3700ppm/°C to
an accuracy of ±500ppm/°C. The DS2760 does not compensate for external sense resistor characteristics, and any error
terms arising from the use of an external sense resistor should be taken into account when calculating total current
measurement error.
10) Typical value for tERR is at 3.6V and +25°C.
11) 4-year data retention at +70°C.
12) Typical load capacitance on DC and CC is 1000pF.
13) Test conditions are PLS = 4.1V, VDD = 2.5V. Maximum current for conditions of PLS = 15V, VDD =0V is 10mA.
14) Error at time of shipment from Dallas Semiconductor is 3% max. Board mounting processes may cause the current gain
error to widen to as much as 10% for devices with the internal sense resistor option. Contact factory for on-board
recalibration procedure for devices with the internal sense resistor option to improve accuracy.
25
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