CXA1940N 查看數據表（PDF） - Sony Semiconductor

零件编号

产品描述 (功能)

生产厂家

CXA1940N

4ch. Read/Write Amplifier for Thin Film Head of Hard Disk Drive

Sony Semiconductor 

CXA1940N

Electrical Characteristics

(Unless otherwise specified, VCC=5V, Ta=25°C, Write current IW=20mA)

No.

Item

Current consump-

1-1 tion for Read

Sym-

SW Conditions

bol

12

345

678

Measurement conditions

9 101112

Min.

Test point : I4

IR b a a a a b a a a a b a

12

Current consump-

Test point : I4

17

1-2 tion for Write

IW b a a a a b a a a a a a

+IW

Current consump-

Test point : I4

1-3 tion for Power save IP b a a a a b a a a a b b

0.6

Digital input “Low”

2-1 input voltage

VIL

Digital input :

Pins 12, 14, 15, 19, 20

Digital input “High”

2-2 input voltage

VIH

2.0

Digital input “Low”

2-3 input current

IIL

“High” applied voltage : 5V

aa aaa aaa aa aa

–20

“Low” applied voltage : 0V

Digital input “High”

Test point : I3, I5, I6, I7, I8

2-4 input current

IIH a a a a a b a b b a b b

Write unsafe output

Output current : 1mA

3-1 saturation voltage VWUS b a a a b c a a a a a a Test point : V1

Write unsafe output

Test point : I2

3-2 leak current

IWUS b a a a e c a a a a a a

When VCC is lowered

from 5V in Write mode

Supply power

4 ON/OFF detector

threshold voltage

and IW does not flow

anymore, VCC voltage is

VTH b a a a a b a a a a a a set to VTHOFF. When

3.6

VCC is raised from 3V

and IW starts to flow, VCC

voltage is set to VTHON.

Write current setting

5 range

IW b a a a a b a a a a a a

5

Typ. Max. Unit

19 26 mA

26

+IW

35

+IW

mA

1.1 1.5 mA

0.8 V

V

µA

70 µA

0.5 V

20 µA

3.9 4.3 V

20 mAo-p

Write current

6 tolerance

∆Iw b a a a a b a a a a a a

-8

8%

Read amplifier

7 differential voltage

gain

Input voltage SG1 :

1mVp-p, 300kHz

Load resistance (RDX,

AV b a a a c b a a a b b a RDY) : 1kΩ

Test point : V4 [Vp-p]

AV= V4

SG1

245 290 335 V/V

Frequency

8 band width (–3dB)

BW b a a a c b a a a b b a Frequency at which AV

lowers by 3dB

30

MHz

—5—

Share Link: