Preliminary Technical Data

AD9959

Rev. PrB | Page 5 of 9

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 +4V

Digital Output Current

5 mA

Storage Temperature

–65°C to +150°C

Operating Temperature

–40°C to +105°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 and

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.

Iout

Iout

INPUT

OUTPUT

DVDD_I/O= 3.3V

TERMINATE OUTPUTS

INTO AVDD. DO NOT

EXCEED OUTPUT

VOLTAGE COMPLIANCE.

AVOID OVERDRIVING

DIGITAL INPUTS.

FORWARD BIASING

DIODES MAY COUPLE

DIGITAL NOISE ON

POWER PINS.

1.5 k

1.5 k

REF_CLK

REF_CLK

zz

AVDD

REF_CLK INPUTS ARE

INTERNALLY BIASED AND

NEED TO BE AC-COUPLED.

OSC INPUTS ARE DC

COUPLED

CMOS

DIGITAL

INPUTS

DAC OUPUTS

OSC / REF_CLK

INPUTS

AMP

OSC

OSC

AVDD

AVDD

Figure 1 Equivalent input and output circuits