ADUM1234BRWZ View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADUM1234BRWZ

Isolated, Precision Half-Bridge Driver, 0.1 A Output

Analog Devices 

ADuM1234

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

VIA 1

VIB 2

VDD1 3

GND1 4

DISABLE 5

NC 6

NC 7

VDD1 8

ADuM1234

TOP VIEW

(Not to Scale)

16 VDDA

15 VOA

14 GNDA

13 NC

12 NC

11 VDDB

10 VOB

9 GNDB

NC = NO CONNECT

Figure 2. Pin Configuration

Table 8. ADuM1234 Pin Function Descriptions

Pin No.

Mnemonic Description

1

VIA

Logic Input A.

2

31, 81

VIB

VDD1

Logic Input B.

Input Supply Voltage, 4.5 V to 5.5 V.

4

GND1

Ground Reference for Input Logic Signals.

5

DISABLE

Input Disable. Disables the isolator inputs and refresh circuits. Outputs take on default low state.

6, 7, 122, 132 NC

No Connect.

9

GNDB

Ground Reference for Output B.

10

VOB

Output B.

11

VDDB

Output B Supply Voltage, 12 V to 18 V.

14

GNDA

Ground Reference for Output A.

15

VOA

Output A.

16

VDDA

Output A Supply Voltage, 12 V to 18 V.

1 Pin 3 and Pin 8 are internally connected. Connecting both pins to VDD1 is recommended.

2 Pin 12 and Pin 13 are floating and should be left unconnected.

Table 9. Truth Table (Positive Logic)

VIA/VIB Input VDD1 State

DISABLE

H

Powered

L

L

Powered

L

X

Unpowered X

X

Powered

H

VOA/VOB Output

H

L

L

L

Notes

Output returns to input state within 1 μs of VDD1 power restoration.

Rev. 0 | Page 6 of 12

Share Link: