ADV7172 View Datasheet(PDF) - Analog Devices

Part Name

Description

View to exact match

ADV7172

Digital PAL/NTSC Video Encoder with Six DACs (10 Bits), Color Control and Enhanced Power Management

Analog Devices 

ADV7172/ADV7173

ABSOLUTE MAXIMUM RATINGS1

VAA to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V

Voltage on Any Digital Input Pin . GND – 0.5 V to VAA + 0.5 V

Storage Temperature (TS) . . . . . . . . . . . . . . –65°C to +150°C

Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . 150°C

Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . . 260°C

Analog Outputs to GND2 . . . . . . . . . . . GND – 0.5 V to VAA

NOTES

1Stresses 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 listed in the operational sections of this

specification is not implied. Exposure to absolute maximum rating conditions for

extended periods may affect device reliability.

2Analog output short circuit to any power supply or common can be of an

indefinite duration.

PIN CONFIGURATION

PACKAGE THERMAL PERFORMANCE

The 48-lead LQFP package is used for this device. The junc-

tion-to-ambient (θJA) thermal resistance in still air on a four

layer PCB is 54.6°C/W. The junction-to-case thermal resistance

(θJC) is 16.7°C.

To reduce power consumption when using this part the user is

advised to run the part on a 3.3 V supply, turn off any unused

DACs. However, if 5 V operation is required the user can enable

Low Power mode by setting MR16 to a Logic 1. Another alter-

native way to further reduce power is to use external buffers that

dramatically reduce the DAC currents, the current can be low-

ered to as low as 5 mA (see AN-551 and Appendix 8 for more

details) from a nominal value of 36 mA.

The user must at all times stay below the maximum junction

temperature of 110°C. The following equation shows how to

calculate this junction temperature:

Junction Temperature = [VAA (IDAC + ICCT) × θJA ] 70°C

where

IDAC = 10 mA + (sum of the average currents consumed by each

powered-on DAC).

48 47 46 45 44 43 42 41 40 39 38 37

VAA 1

P0 2

P1 3

P2 4

P3 5

P4 6

P5 7

P6 8

P7 9

CSO HSO 10

VAA 11

GND 12

PIN 1

IDENTIFIER

ADV7172/ADV7173

TOP VIEW

(Not to Scale)

36 COMP1

35 DAC A

34 VAA

33 DAC B

32 VAA

31 GND

30 VAA

29 DAC C

28 DAC D

27 VAA

26 GND

25 DAC E

13 14 15 16 17 18 19 20 21 22 23 24

ORDERING GUIDE

Model

Temperature

Range

ADV7172KST 0°C to 70°C

ADV7173KST 0°C to 70°C

Package

Description

Plastic Thin

Quad Flatpack

Plastic Thin

Quad Flatpack

Package

Option

ST-48

ST-48

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 the ADV7172/ADV7173 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.

WARNING!

ESD SENSITIVE DEVICE

REV. B

–9–

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