7

CS4361

Confidential Draft

2/12/08

COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE

The filter characteristics have been normalized to the sample rate (Fs) and can be referenced to the desired sam-

ple rate by multiplying the given characteristic by Fs. (See Note 5)

2.

Response is clock-dependent and will scale with Fs.

3.

For Single-Speed Mode, the measurement bandwidth is 0.5465 Fs to 3 Fs.

For Double-Speed Mode, the measurement bandwidth is 0.577 Fs to 1.4 Fs.

For Quad-Speed Mode, the measurement bandwidth is 0.7 Fs to 1 Fs.

4.

De-emphasis is available only in Single-Speed Mode.

5.

Amplitude vs. Frequency plots of this data are available in “Performance Plots” on page 18.

Parameter

Symbol

Min

Typ

Max

Unit

Single-Speed Mode

Passband (Note 2)

to -0.05 dB corner

to -3 dB corner

0

0

-

-

.4780

.4996

Fs

Fs

Frequency Response 10 Hz to 20 kHz

-.01

-

+.08

dB

StopBand

.5465

-

-

Fs

StopBand Attenuation

(Note 3)

50

-

-

dB

Group Delay

tgd

-

10/Fs

-

s

De-emphasis Error (Note 4)

Fs = 44.1 kHz

-

-

+.05/-.25

dB

Double-Speed Mode

Passband (Note 2)

to -0.1 dB corner

to -3 dB corner

0

0

-

-

.4650

.4982

Fs

Fs

Frequency Response 10 Hz to 20 kHz

-.05

-

+.2

dB

StopBand

.5770

-

-

Fs

StopBand Attenuation

(Note 3)

55

-

-

dB

Group Delay

tgd

-

5/Fs

-

s

Quad-Speed Mode

Passband (Note 2)

to -0.1 dB corner

to -3 dB corner

0

0

-

-

0.397

0.476

Fs

Fs

Frequency Response 10 Hz to 20 kHz

0

-

+0.00004

dB

StopBand

0.7

-

-

Fs

StopBand Attenuation

(Note 3)

51

-

-

dB

Group Delay

tgd

-

2.5/Fs

-

s