AD1845 datasheet(3/40 Pages) AD

Il numero della parte	AD1845

Spiegazioni elettronici	Parallel-Port 16-Bit SoundPort Stereo Codec

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Produttore elettronici	AD [Analog Devices]

Homepage	http://www.analog.com

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ANALOG-TO-DIGITAL CONVERTERS

Min

Typ

Max

Units

Resolution

16

Bits

Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale, A-Weighted)

73

81

dB

THD+N (Referenced to Full Scale)

0.025

%

–76

–72

dB

Signal-to-Intermodulation Distortion

85

dB

ADC Crosstalk*

Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L)

–90

–80

dB

Line to MIC (Input LINE, Ground and Select MIC, Read ADC)

–90

–80

dB

Line to AUX1

–90

–80

dB

Line to AUX2

–90

–80

dB

Gain Error (Full-Scale Span Relative to Nominal Input Voltage)

–18.5

+10

%

Interchannel Gain Mismatch (Difference of Gain Errors)

±0.9

dB

ADC Offset Error

10

mV

DIGITAL-TO-ANALOG CONVERTERS

Min

Typ

Max

Units

Resolution

16

Bits

Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale, A-Weighted)

74

82

dB

THD+N (Referenced to Full Scale)

0.032

%

–78

–70

dB

Signal-to-Intermodulation Distortion

90

dB

Gain Error (Full-Scale Span Relative to Nominal Output Voltage)

–14.5

+10

%

Interchannel Gain Mismatch (Difference of Gain Errors)

±0.6

dB

DAC Crosstalk* (Input L, Zero R, Measure R_OUT; Input R, Zero L, Measure L_OUT)

–80

dB

Total Out-of-Band Energy (Measured from 0.6

× F

S to 100 kHz)*

–50

dB

Audible Out-of-Band Energy (Measured from 0.6

× F

S to 20 kHz)*

–70

dB

DAC ATTENUATOR

Min

Typ

Max

Units

Step Size (0 dB to –22.5 dB)

1.3

1.5

1.7

dB

Step Size (–22.5 dB to –94.5 dB)*

1.0

1.5

2.0

dB

Output Attenuation Range Span*

93.5

94.5

95.5

dB

ANALOG OUTPUT

Min

Typ

Max

Units

Full-Scale Output Voltage

OL = 0

1.7

2.0

2.2

V p-p

OL = 1

2.4

2.83

3.11

V p-p

Output Impedance*

600

Ω

External Load Impedance

10

k

Ω

Output Capacitance*

15

pF

External Load Capacitance

100

pF

VREF

2.05

2.25

2.60

V

VREF Current Drive

100

µA

VREF Output Impedance

4k

Ω

Mute Attenuation of 0 dB Fundamental* (L_OUT, R_OUT, M_OUT)

–80

dB

Mute Click (Muted Output Minus Unmuted Midscale DAC Output)*

±5mV

*Guaranteed, not tested.

AD1845

–3–

REV. C

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