REV. B

–4–

AD7008

ABSOLUTE MAXIMUM RATINGS*

AGND to DGND . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V

Operating Temperature Range

Industrial (A Version) . . . . . . . . . . . . . . . . . –40

°C to +85°C

Commercial (J Version) . . . . . . . . . . . . . . . . . . 0

°C to +70°C

Storage Temperature Range . . . . . . . . . . . . . –65

°C to +150°C

Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . +300

°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +115

°C

PLCC

θ

. . . . . . . . . . . . . . . +53.8

°C/W

θ

. . . . . . . . . . . . . . . +24.1

°C/W

*Stresses above those listed under “Absolute Maximum Ratings” may cause

permanent damage to the device. This is a stress rating only and functional

operation of the device at these or any other conditions above those listed in the

operational sections of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

ORDERING GUIDE

Temperature

Package

Package

Model

Range

Description

Option

AD7008AP20

–40

°C to +85°C

44-Pin PLCC P-44A

AD7008JP50

0

°C to +70°C

44-Pin PLCC P-44A

AD7008/PCB*

1–3.5" Disk

*AD7008/PCB DDS Evaluation Kit, assembled and tested. Kit includes an

AD7008JP50.

PIN CONFIGURATION

PLCC

PIN NO. 1 IDENTIFIER

6

40

18

28

7

39

17

29

AD7008 PLCC

TOP VIEW

(NOT TO SCALE)

RESET

SLEEP

LOAD

TC3

TC2

TC1

TC0

FSELECT

CLOCK

DGND

DGND

D8

D9

D10

D11

D12

D13

D14

D15

WR

MSB

LSB

A WORD

D15–D0

← A WORD*

B WORD

D15–D0

← B WORD

A WORD

32-BIT PARALLEL ASSEMBLY REGISTER

*MOST SIGNIFICANT WORD IS LOADED FIRST

Figure 5. 16-Bit Parallel Port Loading Sequence

A BYTE

A BYTE

A BYTE

A BYTE

B BYTE

B BYTE

B BYTE

C BYTE

C BYTE

D BYTE

D7–D0

← A BYTE*

D7–D0

← B BYTE

D7–D0

← C BYTE

D7–D0

← D BYTE

MSB

LSB

32-BIT PARALLEL ASSEMBLY REGISTER

*MOST SIGNIFICANT BYTE IS LOADED FIRST

Figure 6. 8-Bit Parallel Port Loading Sequence

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection.

Although the AD7008 features proprietary ESD protection circuitry, permanent damage may

occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD

precautions are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE