DS2761

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ELECTRICAL CHARACTERISTICS:

1-WIRE INTERFACE

(-20

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Time Slot

60

120

Recovery Time

1

Write 0 Low Time

60

120

Write 1 Low Time

115

Read Data Valid

15

Reset Time High

480

Reset Time Low

480

960

Presence Detect High

15

60

Presence Detect Low

60

240

SWAP Timing Pulse Width

0.2

120

SWAP Timing Pulse Falling

Edge to DC Release

01

ms

12

SWAP Timing Pulse Rising Edge

to DC Engage

01

ms

12

DQ Capacitance

60

pF

EEPROM RELIABILITY SPECIFICATION

(-20

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Copy to EEPROM Time

210

ms

EEPROM Copy Endurance

25000

cycles

11

NOTES

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.

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 DS2761 compensates for the internal sense resistor’s

temperature coefficient of 3700ppm/

°C to an accuracy of ±500ppm/°C. The DS2761 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.

°C.

11) Four year data retention at +70

°C.

12) Typical load capacitance on DC and CC is 1000pF.

13)