AD1985JST datasheet(6/48 Pages) AD

No. de pieza	AD1985JST

Descripción Electrónicos	AC ??7 SoundMAX Codec

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Fabricante Electrónico	AD [Analog Devices]

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AD1985

Rev. A | Page 6 of 48

ANALOG OUTPUT

Table 9.

Parameter

Min

Typ

Max

Unit

FULL-SCALE OUTPUT VOLTAGE: LINE OUT, MONO OUT, CENTER, LFE

1

V rms

2.83

V p-p

Output Impedance1

300

500

Ω

External Load Impedance1

2

10

kΩ

Output Capacitance1

15

pF

External Load Capacitance

1000

pF

FULL-SCALE OUTPUT VOLTAGE: HP_OUT

1

V rms

2.83

V p-p

External Load Capacitance1

1000

pF

External Load Impedance1

32

Ω

VREF

2.1

2.25

2.4

V

VREFOUT (VREFH, VREFD = 00 in REGISTER 0x76)

2.25

V

VREFOUT (VREFH, VREFD = 10)

3.70

V

VREFOUT (VREFH, VREFD = 11)

0.0

V

VREFOUT CURRENT DRIVE

5

mA

MUTE CLICK (MUTED OUTPUT UNMUTED MIDSCALE DAC OUTPUT)

±5

mV

Note that setting VREFOUT to 0 V reduces crosstalk when Center/LFE is sharing the MIC jack. The Center/LFE crosstalk should be better than −60 dB at 100 Hz when sharing

with a stereo microphone application circuit.

STATIC DIGITAL SPECIFICATIONS

Table 10.

Parameter

Min

Typ

Max

Unit

DIGITAL INPUTS/OUTPUTS

High Level Input Voltage (VIH)

0.65 × DVDD

V

Low Level Input Voltage (VIL)

0.35 × DVDD

V

High Level Output Voltage (VOH), IOH = 2 mA

0.9 × DVDD

V

Low Level Output Voltage (VOL), IOL = 2 mA

0.1 × DVDD

V

INPUT LEAKAGE CURRENT

–10

+10

µA

OUTPUT LEAKAGE CURRENT

–10

+10

µA

INPUT/OUTPUT PIN CAPACITANCE

7.5

pF

POWER SUPPLY

Table 11.

Parameter

Min

Typ

Max

Unit

POWER SUPPLY RANGE—ANALOG (AVDD)

4.5

5.5

V

POWER SUPPLY RANGE—DIGITAL (DVDD)

2.97

3.63

V

POWER DISSIPATION—5 V/3.3 V

465

mW

POWER SUPPLY REJECTION (100 mV p-p SIGNAL @ 1 kHz)1

40

dB

1 Guaranteed, not tested.

Número de pieza similar - AD1985JST

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Descripción similar - AD1985JST

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