ADM3053

Data Sheet

Rev. E | Page 8 of 18

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

GND2

20

19

18

CANH

17

GND2

16

CANL

15

14

GND2

13

12

GND2

11

ADM3053

TOP VIEW

(Not to Scale)

NOTES

1. NC = NO CONNECT. DO NOT

CONNECT TO THIS PIN.

2. PIN 12 AND PIN 19 MUST BE

CONNECTED EXTERNALLY.

Figure 4. Pin Configuration

Table 8. Pin Function Descriptions

Pin No.

Mnemonic

Description

1, 3, 7, 9, 10

GND1

Ground, Logic Side.

2

NC

No Connect. Do not connect to this pin.

4

RxD

Receiver Output Data.

5

TxD

Driver Input Data.

6

iCoupler Power Supply. It is recommended that a 0.1 μF and a 0.01 μF decoupling capacitor be fitted

between Pin 6 and GND1. See Figure 28 for layout recommendations.

8

isoPower Power Supply. It is recommended that a 0.1 μF and a 10 μF decoupling capacitor be fitted

between Pin 8 and Pin 9.

11, 13

GND2

Ground for Isolated DC-to-DC Converter. It is recommended to connect Pin 11 and Pin 13 together through

one ferrite bead to the PCB ground.

12

bead reservoir capacitor of 10 μF and a decoupling capacitor of 0.1 μF be fitted between Pin 12 and Pin 11.

14

Reference Voltage Output. It is recommended not to connect to this pin.

15

CANL

Low-Level CAN Voltage Input/Output.

16, 20

GND2

Ground, Bus Side.

17

CANH

High-Level CAN Voltage Input/Output.

18

Slope Control Pin. Short this pin to GND2 (Pin 16 or Pin 20) for full speed operation. Use a weak pull-down for

slope control. An input high places the transceiver in standby. This pin must not be left floating.

19

have a 0.1 μF capacitor to GND2 (Pin13 or Pin 11). Connect this pin through a ferrite bead and short trace