AD7674ASTZ datasheet(8/29 Pages) AD

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Data Sheet

AD7674

Rev. B | Page 7 of 28

ABSOLUTE MAXIMUM RATINGS

Table 5. AD7674 Absolute Maximum Ratings

Parameter

Rating

Analog Inputs

IN+1, IN−1, REF, REFBUFIN, REFGND

to AGND

AGND − 0.3 V to

AVDD + 0.3 V

Ground Voltage Differences

AGND, DGND, OGND

±0.3 V

Supply Voltages

AVDD, DVDD, OVDD

−0.3 V to +7 V

AVDD to DVDD, AVDD to OVDD

±7 V

DVDD to OVDD

−0.3 V to +7 V

Digital Inputs

−0.3 V to DVDD + 0.3 V

Internal Power Dissipation2

700 mW

Internal Power Dissipation3

2.5 W

Junction Temperature

150°C

Storage Temperature Range

−65°C to +150°C

Lead Temperature Range

(Soldering 10 sec)

300°C

See the Analog Inputs section.

Specification is for device in free air: 48-Lead LQFP: θJA = 91°C/W,

θJC = 30°C/W.

Specification is for device in free air: 48-Lead LFCSP: θJA = 26°C/W.

Stresses at or above those listed under Absolute Maximum

Ratings may cause permanent damage to the product. This is a

stress rating only; functional operation of the product at these

or any other conditions above those indicated in the operational

section of this specification is not implied. Operation beyond

the maximum operating conditions for extended periods may

affect product reliability.

TO OUTPUT

60pF1

500

µA

IOH

1.6mA

IOL

1.4V

IN SERIAL INTERFACE MODES,THE SYNC, SCLK, AND

SDOUT TIMINGS ARE DEFINED WITH A MAXIMUM LOAD

CL OF 10pF; OTHERWISE,THE LOAD IS 60pF MAXIMUM.

NOTE

03083–0–002

Figure 2. Load Circuit for Digital Interface Timing, SDOUT, SYNC, SCLK

Outputs, CL = 10 pF

0.8V

DELAY

0.8V

DELAY

03083–0–003

Figure 3. Voltage Reference Levels for Timing

ESD CAUTION

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