AN8807SB 参数 Datasheet PDF下载

AN8807SB

• Envelope Detection

ICs for CD-ROM Player

The envelope detection circuit extracts fluctuation of RF signal required for adjustment of focus balance.

Pin11 and 12 are connecting pins with capacity for constructing the filter. It is recommended that for Pin11, a capacitor of

100pF around, and for Pin12, an external capacitor of 0.027µF around should be connected against V

CC

.

Pin19 is for output and must have external capacity for constructing the filter, and it is recommended that an external capacitor

of 0.027µF around should be connected to it for V

REF

.

CENV

11

CEA

12

ENV

19

AGC

ENV Detection

Figure 6 : Envelope Detection

• CROSS Detection

24

CROSS

Track cross signals are detected from tracking error output. Pin4 is a connecting pin for constructing the filter, and it is

recommended that a capacitor of 2.2µF around should be connected to it for V

REF

.

+

–

4

C.CRS

25

TEOUT

Figure 7 : CROSS Detection