AD7861AP datasheet(3/6 Pages) AD

3 / 6 page

AD7861

REV. B

–3–

Table I. AD7861 Timing Parameters (TA = –40 C to +85 C and VDD = +5 V unless otherwise noted)

Number

Symbol

AD7861 Timing Requirements

Min

Max

Units

1tsucsb_rdb

CS Low Before Falling Edge of RD

0–

2tsuaddr_rdb

ADDR Valid Before Falling Edge of

0–

3tdlyrdb_data

DATA Valid After Falling Edge of

–25

4tpwlrdb

RD Pulsewidth, Low

–

5tpwhrdb

RD Pulsewidth, High

–

6thdrdb_data

DATA Hold After Rising Edge of

–

7thdrdb_addr

ADDR Hold After Rising Edge of

0–

8thdrdb_csb

CS Hold After Rising Edge of RD

0–

9tperclk

CLK Period

160

tpwhclk

CLK Pulsewidth, High

–

tpwlclk

CLK Pulsewidth, Low

–

tpwlresetb

RESET Pulsewidth, Low

× tperclk –

7, 8

1, 2

CLK

A0–A1

DATA

BUS

Figure 1. Clock and Reset Timing

CLK

RESET

Figure 2. Write Cycle Timing Diagram

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 AD7861 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.

ORDERING GUIDE

Model

Temperature Range

Package Option

AD7861AP

–40

°C to +85°C

P-44A

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage (VDD) . . . . . . . . . . . . . . . . . . –0.3 V to +7.0 V

Digital Input Voltage . . . . . . . . . . . . . . . . . . . . . –0.3 V to VDD

Analog Input Voltage . . . . . . . . . . . . . . . . . . . . . –0.3 V to VDD

Analog Reference Input Voltage . . . . . . . . . . .

–0.3 V to VDD

Digital Output Voltage Swing . . . . . . . . . . . . . . –0.3 V to VDD

Analog Reference Output Swing . . . . . . . . . . .

–0.3 V to VDD

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

°C to +85°C

Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +280

°C

*Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only; functional operation of the

device at these or any other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

WARNING!

ESD SENSITIVE DEVICE

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