AD9958

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ABSOLUTE MAXIMUM RATINGS

Table 2.

Parameter

Rating

Maximum Junction Temperature

150°C

DVDD_I/O (Pin 49)

4 V

AVDD, DVDD

2 V

Digital Input Voltage (DVDD_I/O = 3.3 V)

−0.7 V to +4 V

Digital Output Current

5 mA

Storage Temperature

–65°C to +150°C

Operating Temperature

–40°C to +85°C

Lead Temperature (10 sec Soldering)

300°C

21°C/W

2°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.

ESD 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 this product 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.

EQUIVALENT INPUT AND OUTPUT CIRCUITS

CMOS

DIGITAL

INPUTS

AVOID OVERDRIVING

DIGITAL INPUTS.

FORWARD BIASING

DIODES MAY COUPLE

DIGITAL NOISE ON

POWER PINS.

DVDD_I/O = 3.3V

INPUT

OUTPUT

DAC OUTPUTS

TERMINATE OUTPUTS

INTO AVDD. DO NOT

EXCEED OUTPUTS'

VOLTAGE COMPLIANCE.

IOUT

IOUT

REF_CLK INPUTS

REF_CLK INPUTS ARE

INTERNALLY BIASED AND

NEED TO BE AC-COUPLED.

OSC INPUTS ARE DC-

COUPLED.

AMP

REF_CLK

REF_CLK

OSC

AVDD

1.5k

Ω

AVDD

1.5k

Ω

AVDD

Z

Z

Figure 2.

Figure 3.

Figure 4.