REV. 0

AD5424/AD5433/AD5445

–7–

TSSOP

GND

DB9

DB6

1

2

3

4

5

20

14

NC

DB5

DB4

DB3

6

7

8

15

16

17

18

19

R/

W

CS

DB0 (LSB)

NC = NO CONNECT

12

DB1

DB2

9

10

13

11

DB8

DB7

NC

AD5433

(Not to Scale)

LFCSP

PIN 1

INDICATOR

TOP VIEW

AD5433

1

GND

2

DB9

3

DB8

4

DB7

5

DB6

15 R/

W

14

CS

13 NC

12 NC

11 DB0

NC = NO CONNECT

PIN CONFIGURATIONS

AD5433 PIN FUNCTION DESCRIPTIONS

Pin No.

TSSOP

LFCSP

Mnemonic Function

119

DAC Current Output.

220

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

31

GND

Ground

4–13

2–11

DB9–DB0

Parallel Data Bits 9 to 0.

14, 15

12, 13

NC

Not Internally Connected.

16

14

CS

Chip Select Input. Active low. Used 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 readback 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.