DS2746 datasheet(8/16 Pages) DALLAS

Part #	DS2746

Description	Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs

Download	16 Pages

Scroll/Zoom	100%

Manufacturer	DALLAS [Dallas Semiconductor]

Direct Link	https://www.maximintegrated.com/en.html

Logo

8 / 16 page

DS2746 Low-Cost 2-Wire Battery Monitor

8 of 16

Figure 5. Measurement Timing

VOLTAGE MEASUREMENT

Battery voltage is measured at the VIN input with respect to VSS over a range of 0V to 4.997V and with a resolution

of 2.44mV. The result is updated every 660ms with the average voltage over the last 220ms and placed in the

VOLTAGE register in two’s compliment form. Voltages above the maximum register value are reported as 7FFFh.

Figure 6. Voltage Register Format

MSB—Address 0Ch

LSB—Address 0Dh

S

210 29

28

27

26

25

24

23

22

21

20

X

MSb

LSb

MSb

LSb

“S”: sign bit(s), “X”: reserved

Units: 2.44mV

The input impedance of VIN is sufficiently large (>15MΩ) to be connected to a high impedance voltage divider in

order to support multiple cell applications. The pack voltage should be divided by the number of series cells to

present a single cell average voltage to the VIN input.

Similar Part No. - DS2746

Manufacturer	Part #	Datasheet	Description
Vishay Siliconix	DS2746	278Kb / 15P	Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs REV: 122706
Maxim Integrated Produc...	DS2746	306Kb / 17P	Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs 5/09
Vishay Siliconix	DS2746G++	278Kb / 15P	Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs REV: 122706
Maxim Integrated Produc...	DS2746G++	306Kb / 17P	Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs 5/09
Vishay Siliconix	DS2746G+TANDR	278Kb / 15P	Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs REV: 122706

Manufacturer	Part #	Datasheet	Description
Vishay Siliconix	DS2746	278Kb / 15P	Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs REV: 122706
Maxim Integrated Produc...	DS2746	306Kb / 17P	Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs 5/09
	DS2745	237Kb / 15P	Low-Cost I2C Battery Monitor 5/09
	DS2745	223Kb / 14P	Low-Cost I2C Battery Monitor 091405
	DS2745EVKIT	150Kb / 11P	Low-Cost I2C Battery Monitor Evaluation Kit Rev 11/09
MEMSIC Semiconductor (T...	MXR7999VW	367Kb / 6P	Low Cost Dual-Axis Accelerometer with Ratiometric Outputs Rev C
Maxim Integrated Produc...	DS2764	191Kb / 20P	High-Precision Li Battery Monitor with 2-Wire Interface 2006
Maxim Integrated Produc...	DS2764	246Kb / 20P	High-Precision Li Battery Monitor with 2-Wire Interface 011005
MEMSIC Semiconductor (T...	MXR7999V	95Kb / 6P	Low Cost 짹1.7 g Dual-Axis Accelerometer with Ratiometric Outputs Rev.A
List of Unclassifed Man...	MXR9500G	243Kb / 5P	Low Cost 짹1.5 g Tri Axis Accelerometer with Ratiometric Outputs