eKA8564A

USB Audio Controller

8

•

Product Specification (V0.1) 09.08.2006

(This specification is subject to change without further notice)

9.2 Analog Electrical Characteristic

Parameter

Condition

Min

Typ

Max

Unit

ADC

ADC Resolution

−

−

10

−

Bits

ADC Sampling Frequency

−

−

48

−

kHz

Internal High Reference Voltage for ADC

−

−

2.55

−

V

Internal Low Reference Voltage for ADC

−

−

0.75

−

V

Pre-Amplifier Spec.

Pre-Amplifier Voltage Gain

−

19.5

20

20.5

dB

Gain Amplifier Spec.

Voltage Amplifier Gain

−

49

50

51

dB

Output Voltage Swing

−

−

1.6

−

Vp-p

Output Voltage

−

0.85

−

2.45

V

ALC Circuit Spec.

ALC Detection Level

MIC input = 7.5mV

-40

−

dBm

ALC Operating Range

−

36

40

44

dB

LPF Spec

Pass-Band Ripple

−

−

−

0.5

dB

Pass-Band Cutoff Frequency

−

−

4

−

kHz

Stop-Band Attenuation @ 24kHz

−

70

−

−

dB

Stop-Band Attenuation @ 48kHz

−

90

−

−

dB

DAC

DAC Resolution

−

−

10

−

Bits

DAC Sampling Frequency

−

−

48

−

kHz

Reference Voltage (Vref)

−

1.45

1.65

1.85

V

Minimum Analog Output Voltage

−

0.45

0.65

0.85

V

Maximum Analog Output Voltage

−

2.45

2.65

2.85

V

Full Scale Voltage Range

VDA=3.3V

-5%

2.0

+5%

V

Analog Output Impedance at Each Output Pin

−

−

−

200

Ω

Analog Output Capacitance at Each Output Pin

−

−

−

20

pF

External Load Impedance

−

−

32

−

Ω

Volume Control Step

−

−

16

−

Step