AD1989BJCPZ datasheet(5/20 Pages) AD

No. de pieza	AD1989BJCPZ

Descripción Electrónicos	High Definition Audio SoundMAX Codec

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AD1989B

Rev. 0

|

Page 5 of 20

|

August 2008

DAC VOLUMES

Step Size (DAC0, DAC1, DAC2, DAC3)

1.5

dB

Output Gain/Attenuation Range

–58.5

0

dB

Mute Attenuation of 0 dB Fundamental1

–80

dB

ADC VOLUMES

Step Size (ADCSEL-0, ADCSEL-1)

1.5

dB

PGA Gain/Attenuation Range

–58.5

+22.5

dB

Mute Attenuation of 0 dB Fundamental1

–80

dB

ANALOG MIXER

Signal-to-Noise Reduction (SNR) Input to Output

95

dB

Step Size: All Mixer Inputs

–1.5

dB

Input Gain/Attenuation Range: All Mixer Inputs

–34.5

+12.0

dB

ANALOG LINE LEVEL OUTPUTS

Full-Scale Output Voltage: Line-Out Drive Enabled

1.0

V rms3

Output Impedance1

190

Ω

External Load Impedance1

10

k

Ω

Output Capacitance

1

15

pF

External Load Capacitance

1

1000

pF

ANALOG HP DRIVE OUTPUTS

Full-Scale Output Voltage: Line-Out Drive Enabled

1.0

V rms3

Ports A, B and D (when HP Drive is Enabled)

2.83

V p-p

Output Impedance1

0.5

Ω

External Load Impedance

1

32

Ω

Output Capacitance

1

15

pF

External Load Capacitance

1

1000

pF

ANALOG INPUTS

Input Voltages—Ports A, B, C, or E

Mic Boost = 0 dB

1

2.83

V rms3

V p-p

Input Voltages—Microphone Boost

Amplifier, Ports B, C, or E

Mic Boost = +10 dB

0.316

0.894

V rms3

V p-p

Mic Boost = +20 dB

0.1

0.283

V rms

3

V p-p

Mic Boost = +30 dB

0.032

0.089

V rms3

V p-p

Input Impedance

PCBEEP

Ports A, B, C, E (Mic Boost = 0 dB)

23

150

k

Ω

k

Ω

Input Capacitance1

57.5

pF

MICROPHONE BIAS

MIC_BIAS-B, MIC_BIAS-C

MIC_BIAS_IN (Pin 33) = +5 V or +3.3 V

VREF Setting = High-Z

High-Z

VREF Setting = 0 V

0

V dc

VREF Setting = 50%

1.65

V dc

MIC_BIAS_IN (Pin 33) = +5 V

VREF Setting = 80%

3.7

V dc

VREF Setting = 100%

3.9

V dc

MIC_BIAS_IN (Pin 33) = +3.3 V

VREF Setting = 80%

2.86

V dc

VREF Setting = 100%

3.0

V dc

MIC_BIAS-E (When enabled as BIAS)

VREF Setting = High-Z

High-Z

VREF Setting = 0 V

0

V dc

VREF Setting = 50%

1.65

V dc

VREF Setting = 80%

2.86

V dc

VREF Setting = 100%

3.0

V dc

Output Drive Current

VREF Setting = 50%, 80%, or 100%

1.6

mA

Parameter

Min

Typ

Max

Unit

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