Operating Conditions at Pins 22, 45 = GND

Parameter

Symbol

Conditions

Ratings

Unit

Recommended supply voltage

5V

Operating supply voltage

3.6 to 5.5

V

* Operating Supply Voltage at Limit of Operating Temperature at Pins 22, 45 = GND

Parameter

Symbol

Conditions

Ratings

Unit

Operating temperature

Topr2

–5 to +75

°C

Operating supply voltage

Set resistance R between DSP and

CLK interface to 5.1 k

Ω

3.4 to 5.5

V

Operating Characteristics at Ta = 25°C, Pins 22, 45 = GND, V

Parameter

Symbol

Conditions

min

typ

max

Unit

Current drain

22

32

42

mA

Reference voltage

VR

2.3

2.5

2.7

V

[Interface]

CE-Vth

CEvth

CE

0.8

V

CL-Vth

CLvth

CL

0.8

V

DAT-Vth

DATvth

DAT

0.8

V

Maximum CL frequency

CLmax

500

kHz

[RF amplifier]

RFSM no signal voltage

RFSMo

1.35

1.60

1.85

V

Minimum gain

FIN1, FIN2:1M

Ω-input, PH1=4V

freq = 200 kHz, RFSM

–14.0

–12.5

–11.0

dB

[Focus amplifier]

FDO gain

FIN2:1M

Ω-input, FDO

3.5

5.0

6.5

dB

FDO offset

FDost

Difference from reference voltage, servo on

–170

0

+170

mV

Off time offset

FDofost

Difference from reference voltage, servo off

–40

0

+40

mV

Offset adjustment step

FEstep

FE

3

mV

F search voltage H1

FSmax1

FDO, FSS = GND

0.8

V

F search voltage L1

FSmin1

FDO, FSS = GND

–0.8

V

F search voltage H2

FSmax2

0.8

V

F search voltage L2

FSmin2

0V

[Tracking amplifier]

TE gain MAX

f = 10 kHz, E: 1 M

Ω-input, PH1=4V

6.0

7.5

9.0

dB

TE gain MIN

f = 10 kHz, E: 1 M

Ω-input, PH1=1V

–0.5

+1.8

+4.0

dB

TE−3 dB

TEfc

E: 1 M

Ω-input

60

kHz

TO gain

TH

→ TO gain, THLD mode

4.0

6.0

8.0

dB

TGL offset

TGLost

Servo on, TGL = H, TO

–250

0

+250

mV

TGH offset

TGHost

TGL = L, difference from TGL offset, TO

–50

0

+50

mV

THLD offset

THLDost

THLD mode, difference from TGL offset, TO

–50

0

+50

mV

Off 1 offset

OFF1ost

TOFF = H

–50

0

+50

mV

Off 2 offset

OFF2ost

TOFF2 off (IF)

–50

0

+50

mV

Offset adjustment step

TEstep

TE

30

mV

Balance range H

BAL-H

∆ Gain E/F input, TB=5V, TBC= open

3.5

dB

Balance range L

BAL-L

∆ Gain E/F input, TB=0V, TBC= open

–3.5

dB

TOFF-VTH

TOFFvth

1.0

2.5

3.0

V

TGL-VTH

TGLvth

1.0

2.5

3.0

V

[PH]

No signal voltage

PHo

Difference from RFSM

–0.85

–0.65

–0.45

V

[BH]

No signal voltage

BHo

Difference from RFSM

0.45

0.65

0.85

V

[DRF]

Detection voltage

DRFvth

Difference from VR at RFSM

–0.60

–0.35

–0.20

V

Output voltage H

DRF-H

4.5

4.9

V

Output voltage L

DRF-L

0

+0.5

V

Continued on next page.

LA9240M

No.5482 - 2/20