AD7676 datasheet(7/28 Pages) AD

부품명	AD7676

상세설명	18-Bit, 2.5 LSB INL, 570 kSPS SAR ADC

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AD7679

Rev. A | Page 7 of 28

ABSOLUTE MAXIMUM RATINGS

Table 5.AD7679 Absolute Maximum Ratings1

TO OUTPUT

CL

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.

1

03085–0–002

Parameter

Rating

Analog Inputs

IN+2, IN–2, REF, REFBUFIN, REFGND to

AGND

AVDD + 0.3 V to AGND

– 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 Dissipation3

700 mW

Internal Power Dissipation4

2.5 W

Junction Temperature

150°C

Storage Temperature Range

–65°C to +150°C

Lead Temperature Range

(Soldering 10 sec)

300°C

Figure 2. Load Circuit for Digital Interface Timing

SDOUT, SYNC, SCLK Outputs, CL = 10 pF

0.8V

2V

0.8V

t

DELAY

2V

0.8V

t

DELAY

03085–0–003

Figure 3. Voltage Reference Levels for Timing

1 Stresses above those listed under Absolute Maximum Ratings may cause

permanent 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.

ESD CAUTION

2 See Analog Inputs section.

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

θJC = 30°C/W.

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

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