CXA3010 データシートの表示（PDF） - Sony Semiconductor

部品番号

コンポーネント説明

メーカー

CXA3010

Read/Write Amplifier (with Built-in Filters) for FDDs

Sony Semiconductor 

CXA3010Q

Filter Frequency Response

The LPF characteristics are set to Chebyshev (1dB ripple) for 1.6M, 2M/inner track mode only, and to

Butterworth for the other modes. In addition, a custom selection can be made between Chebyshev (1dB ripple)

and Butterworth for the filter characteristics for 1.6M, 2M/inner track mode only; in that case, it is not possible

to change between 1.6M/inner track and 2M/inner track. As a result, the 1.6M and 2M characteristics and fc

ratio are identical.

B.P.F

Q = 0.577

(Differential characteristics)

fOB

1M/outer track, inner track

1.6M, 2M/outer track

L.P.F

Tertiary Butterworth

1.6M, 2M/inner track

L.P.F

Tertiary Chebyshev

1dBRp

(High-band noise cutoff)

fcn

(n = 1, 2, 3)

fc4

(Comprehensive characteristics)

fon

fo4

The BPF center frequency fOB is fixed at 1.2 times the LPF cutoff frequency.

fOB = 1.2fc

In the comprehensive characteristics, the relationship between the peak frequencies fo and fc is as follows,

depending on the differences of the LPF type:

Butterworth characteristics

fcn = 1.28fon (n = 1, 2, 3)

Chebyshev (1dB ripple characteristics) fc4 = 1.12fo4

– 18 –

Share Link: