AD9954 Просмотр технического описания (PDF) - Analog Devices

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AD9954

400 MSPS, 14-Bit, 1.8 V CMOS, Direct Digital Synthesizer

Analog Devices 

ABSOLUTE MAXIMUM RATINGS

Table 2.

Parameter

Maximum Junction Temperature

DVDD_I/O (Pin 43)

AVDD, DVDD

Digital Input Voltage (DVDD_I/O = 3.3 V)

Digital Input Voltage (DVDD_I/O = 1.8 V)

Digital Output Current

Storage Temperature Range

Operating Temperature Range

Lead Temperature (10 sec Soldering)

θJA

θJC

Rating

150°C

4V

2V

–0.7 V to +5.25 V

–0.7 V to +2.2 V

5 mA

–65°C to +150°C

–40°C to +105°C

300°C

38°C/W

15°C/W

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.

AD9954

EXPLANATION OF TEST LEVELS

I

100% production tested.

II

100% production tested at 25°C and sample tested at

specified temperatures.

III

Sample tested only.

IV

Parameter is guaranteed by design and characterization

testing.

V

Parameter is a typical value only.

VI

Devices are 100% production tested at 25°C and

guaranteed by design and characterization testing

for industrial operating temperature range.

ESD CAUTION

DIGITAL

INPUTS

DVDD_I/O

DIGITAL

OUTPUTS

IOUT

IOUT

COMPARATOR

INPUTS

INPUT

COMP IN

COMP IN

COMPARATOR

OUTPUT

AVDD

AVOID OVERDRIVING

DIGITAL INPUTS.

FORWARD BIASING

ESD DIODES MAY

COUPLE DIGITAL NOISE

ONTO POWER PINS.

MUST TERMINATE

OUTPUTS TO AVDD FOR

CURRENT FLOW. DO

NOT EXCEED THE

OUTPUT VOLTAGE

COMPLIANCE RATING.

Figure 3. Equivalent Input and Output Circuits

Rev. B | Page 7 of 40

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