AD9388A(RevF) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD9388A
(Rev.:RevF)

Dual HDMI Receiver, Multiformat HDTV Video Decoder, And RGB Graphics Digitizer

Analog Devices 

ABSOLUTE MAXIMUM RATINGS

Table 4.

Parameter

AVDD to AGND

DVDD to DGND

PVDD to PGND

DVDDIO to DGND

CVDD to CGND

TVDD to TGND

DVDDIO to AVDD

DVDDIO to TVDD

DVDDIO to DVDD

CVDD to DVDD

PVDD to DVDD

AVDD to CVDD

AVDD to PVDD

AVDD to DVDD

AVDD to TVDD

TVDD to DVDD

Digital Inputs

Voltage to DGND

Digital Outputs

Voltage to DGND

Analog Inputs

Voltage to AGND

Maximum Junction

Temperature (TJ_MAX)

Storage Temperature Range

Infrared Reflow,

Soldering (20 sec)

Rating

2.2 V

2.2 V

2.2 V

4V

2.2 V

4V

−0.3 V to +3.6 V

−3.6 V to +3.6 V

−2 V to +2 V

−2 V to +0.3 V

−2 V to +0.3 V

−2 V to +2 V

−2 V to +2 V

−2 V to +2 V

−3.6 V to +0.3 V

−2 V to +2 V

DGND − 0.3 V to DVDDIO + 0.3 V

DGND − 0.3 V to DVDDIO + 0.3 V

AGND − 0.3 V to AVDD + 0.3 V

119°C

−65°C to +150°C

260°C

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.

THERMAL RESISTANCE

Table 5.

Package Type

ΨJT1

144-Lead LQFP (ST-144)

1.62

1 Junction-to-package surface thermal resistance.

Unit

°C/W

AD9388A

PACKAGE THERMAL PERFORMANCE

To reduce power consumption during AD9388A operation,

turn off unused ADCs.

On a 4-layer PCB that includes a solid ground plane, the θJA

value is 25.3°C/W. However, due to variations within the PCB

metal and, therefore, variations in PCB heat conductivity, the

value of θJA may differ for various PCBs.

The most efficient measurement technique is to use the surface

temperature of the package to estimate the die temperature

because it is not affected by the variance associated with the

θJA value.

The maximum junction temperature (TJ_MAX) of 119°C must not

be exceeded. The following equation calculates the junction

temperature using the measured surface temperature of the

package and applies only when no heat sink is used on the

device under test:

TJ_MAX = TS + (ΨJT × WTOTAL)

where:

TS is the surface temperature of the package expressed in

degrees Celsius.

ΨJT is the junction-to-package surface thermal resistance.

WTOTAL = {(AVDD × IAVDD) + (DVDD × IDVDD) + (DVDDIO ×

IDVDDIO) + (PVDD × IPVDD) + (CVDD × ICVDD) + (TVDD × ITVDD)}

The AD9388A can be operated in ambient temperatures up to

+85°C. However, in video modes where highest power is consumed

and there is higher than nominal power supply voltages and worst-

case video data, operation at these ambient temperatures may

cause the junction temperature to exceed its maximum allowed

value (119°C). One way to avoid this is to restrict the ambient

temperature to be below +79°C. However, even if the ambient

temperature is kept below +79°C, the user still needs to observe

the thermally efficient PCB design recommendations outlined

in this section to ensure that the maximum allowed junction

temperature is not exceeded in any video mode.

Contact an Analog Devices, Inc., representative or field appli-

cations engineer (FAE) for more details on package thermal

performance.

ESD CAUTION

Rev. F | Page 9 of 24

Share Link: