AD5424/AD5433/AD5445

Data Sheet

Rev. D | Page 8 of 28

9

12

DB4

DB1

10

11

DB3

DB2

1

2

3

4

5

6

7

8

20

13

14

15

16

17

18

19

AD5433

(Not to Scale)

GND

DB9

DB8

DB7

DB6

DB5

R/W

CS

NC

NC

DB0 (LSB)

NC = NO CONNECT

Figure 5. AD5433 Pin Configuration (TSSOP)

14

13

12

1

3

4

CS

15 R/W

NC

NC

11 DB0

GND

DB8

2

DB9

DB7

5

DB6

NOTES

1. NC = NO CONNECT.

2. THE EXPOSED PAD MUST BE CONNECTED TO AGND.

AD5433

TOP VIEW

(Not to Scale)

Figure 6. AD5433 Pin Configuration (LFCSP)

Table 5. AD5433 Pin Function Descriptions

Pin No.

TSSOP

LFCSP

Mnemonic

Description

1

19

DAC Current Output.

2

20

DAC Analog Ground. This pin should normally be tied to the analog ground of the system.

3

1

GND

Ground.

4 to 13

2 to 11

DB9 to DB0

Parallel Data Bits 9 to 0.

14, 15

12, 13

NC

Not Internally Connected.

16

14

CS

Chip Select Input. Active low. Use in conjunction with R/W to load parallel data to the input

latch or to read data from the DAC register. Rising edge of CS loads data.

17

15

R/W

Read/Write. When low, used in conjunction with CS to load parallel data. When high, use with CS

to read back contents of DAC register.

18

16

Positive Power Supply Input. These parts can be operated from a supply of 2.5 V to 5.5 V.

19

17

DAC Reference Voltage Input Terminal.

20

18

DAC Feedback Resistor Pin. Establish voltage output for the DAC by connecting to external amplifier

output.

Not applicable

EPAD

Exposed Pad. The exposed pad must be connected to AGND.