AD1981B データシートの表示（PDF） - Analog Devices

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AD1981B

AC ’97 SoundMAX® Codec

Analog Devices 

AD1981B

ABSOLUTE MAXIMUM RATINGS*

(TA = 25°C, unless otherwise noted.)

Power Supplies

Digital (DVDD) . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +3.6 V

Analog (AVDD) . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6.0 V

Input Current (Except Supply Pins) . . . . . . . . . . . . . . ± 10 mA

Signals Pins

Digital Input Voltage . . . . . . . . . . . . . –0.3 V to DVDD + 0.3 V

Analog Input Voltage . . . . . . . . . . . . –0.3 V to AVDD + 0.3 V

Ambient Temperature Range (Operating) . . . . . . . 0°C to 70°C

*Stresses greater than 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.

ENVIRONMENTAL CONDITIONS*

Ambient Temperature Rating (LQFP Package)

TCASE = Case Temperature in °C

PD = Power Dissipation in W

␪JA Thermal Resistance (Junction to Ambient)

␪JC Thermal Resistance (Junction to Case)

Package

LQFP

␪JA

50.1°C/W

␪JC

17.8°C/W

*All measurements per EIA-JESD51 with 2S2P test board per EIA-JESD51-7

Model

ORDERING GUIDE

Temperature Range

Package Description

Package Option1

AD1981BJST

AD1981BJST-REEL

AD1981BJSTZ2

AD1981BJSTZ-REEL2

0°C to 70°C

0°C to 70°C

0°C to 70°C

0°C to 70°C

48-Lead LQFP (Tray)

48-Lead LQFP (Reel)

48-Lead LQFP (Tray)

48-Lead LQFP (Reel)

ST-48

ST-48

ST-48

ST-48

1ST = Low Profile Quad Flatpack.

2The AD1981BJSTZ is a lead-free environmentally friendly product. It is manufactured using the most up-to-date materials and processes. The coating on the leads of

each device is 100% pure tin electroplate. The device is suitable for lead-free applications and is able to withstand surface-mount soldering at up to 255 °C (± 5°C). In

addition, it is backward compatible with conventional tin-lead soldering processes. This means that the electroplated tin coating can be soldered with tin-lead solder

pastes at reflow temperatures of 220°C to 235°C.

PIN CONFIGURATION

48-Lead LQFP

DVDD1 1

XTL_IN 2

XTL_OUT 3

DVSS1 4

SDATA_OUT 5

BIT_CLK 6

DVSS2 7

SDATA_IN 8

DVDD2 9

SYNC 10

RESET 11

NC 12

NC = NO CONNECT

AD1981B

TOP VIEW

(Not to Scale)

36 LINE_OUT_R

35 LINE_OUT_L

34 AVDD4

33 AVSS4

32 AFILT4

31 AFILT3

30 AFILT2

29 AFILT1

28 VREFOUT

27 VREF

26 AVSS1

25 AVDD1

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 AD1981B 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.

REV. B

–7–

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