AD8401 datasheet(4/12 Pages) AD

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AD8401

–4–

REV. 0

WARNING!

ESD SENSITIVE DEVICE

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 AD8401 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.

TIMING ELECTRICAL SPECIFICATIONS

(@ VDD = +5.0 V

5%, AGDAC = AGADC = 0.0 V; fCLK = 5 MHz; –40 C ≤ TA ≤ +85 C,

unless otherwise noted)

Parameters

1, 2, 3

Symbol

Condition

Min

Typ

Max

Units

DAC TIMING (See Figure 8 Timing Diagram)

Pulse Width

to WR Setup Time

0ns

to WR Hold Time

0ns

Data Setup Time

Data Hold Time

0ns

ADC TIMING (See Figures 6 and 7 Timing Diagrams)

Pulse Width

to BUSY Delay

110

BUSY

to INT Delay

BUSY

to CS Delay

0ns

to RD Setup Time

t10

0ns

Pulse Width

t11

to RD Hold Time

t12

0ns

Data Access after RD

t13

CL = 20 pF

Data Access after RD

t13

CL = 100 pF

135

Bus Relinquish after RD

t14

to INT Delay

t15

to BUSY Delay

t16

110

Data Valid after BUSY

t17

CL = 20 pF

Data Valid after BUSY

t17

CL = 100 pF

135

NOTES

1All input control signals are specified with t

R = tF = 5 ns (10% to 90% of +5 V) and timed from a voltage level of 1.6 V.

13 and t17 are measured with the load circuits of Figure 1 and defined as the time required for an output to cross either 0.8 V or 2.4 V.

14 is defined as the time required for the data line to change 0.5 V when loaded with the circuit of Figure 2.

15 is determined by t13.

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage (VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . +8 V

Input Voltages . . . . . . . . . . . . . . . . . . . –0.3 V to VDD + 0.3 V

Output Short-Circuit Duration . . . . . . . . . . . . . . . . Indefinite

Package Power Dissipation . . . . . . . . . . . . . . (TJ max–TA)/

Thermal Resistance

28-Lead SOIC (R) . . . . . . . . . . . . . . . . . . . . . . . . . 53

°C/W

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

°C to +150°C

Operating Temperature Range . . . . . . . . . . . . –40

°C to +85°C

Junction Temperature Range (TJ max) . . . . –65

°C to +150°C

Lead Temperature Range (Soldering, 60 sec) . . . . . . +300

°C

*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 indicated 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

Model*

Range

Description

Option

AD8401AR

–40

°C to +85°C 28-Lead SOIC SOL-28

AD8401Chips

+25

°C

Die

*The AD8401 contains 1257 transistors.

Figure 1. Load Circuits for Data Access Time Test

a. VOH to High Z

a. High Z to VOH

b. High Z to VOL

DGND

Ω

DBN

Ω

+5V

DGND

10pF

Ω

DBN

10pF

Ω

+5V

DGND

b. VOL to High Z

Figure 2. Load Circuits for Bus Relinquish Time Test

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