ADBMS1818ASWZ-R7 datasheet(12/89 Pages) AD

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12 / 89 page

Data Sheet

ADBMS1818

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

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Rev. 0 | 12 of 89

Table 12. Pin Function Descriptions

Pin No.

Mnemonic

Description

ICMP

Isolated Interface Comparator Voltage Threshold Set. Tie ICMP to the resistor divider between IBIAS and V– to set the voltage

threshold of the isoSPI receiver comparators. The comparator thresholds are set to half the voltage on the ICMP pin.

59, 60

V–

Negative Supply Pins. The V– pins must be shorted together, external to the IC.

61, 62

IMA, IPA

Isolated 2-Wire Serial Interface Port A. IMA (negative) and IPA (positive) are a differential input/output pair.

63, 64

IMB, IPB

Isolated 2-Wire Serial Interface Port B. IMB (negative) and IPB (positive) are a differential input/output pair.

Exposed Pad

V–. The exposed pad must be soldered to the PCB.

Table 13. Serial Port Pins

Port

ISOMD = VREG

ISOMD = V–

Port B

IPB

(Pin 57, Pin 58, Pin 63, and Pin 64)

IMB

ICMP

IBIAS

Port A

SDO

(Pin 53, Pin 54, Pin 61, and Pin 62)

SDI

IPA

SCK

IMA

CSB

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