Panasonic AN8839NSB Datasheet

ICs for Compact Disc/CD-ROM Player

AN8839NSB

CD-DA head amplifier IC for 3-beam system optical pick-up

■ Overview

The AN8839NSB is a head amplifier IC for digital
servo. It can configure an efficient CD system in combi­nation with the MN6627XX series, and allows a full­automatic adjustment of tracking balance-gain-offset and
focus balance-gain-offset with fewer external parts.

■ Features

• Operating supply voltage VCC = 2.4 V to 5.5 V

• Balance adjustment function built-in

Focus error amp./tracking error amp.

• OFTR/BDO detection

• Standby function built in

• APC amp.

■ Applications

• CD player

1

(0.45)

14 15

0.1±0.1

0.3

7.2±0.3

9.3±0.3

SSOP028-P-0375

Unit: mm

28

0.3±0.1

11.6±0.3

0.8

0.15

0.9

2.0±0.2

1

AN8839NSB ICs for Compact Disc/CD-ROM Player

■ Block Diagram

REF

ENV

19

20

N.C.

25

FEN

FEOUT

24

CC

V

V

3

26

14

GND

LDON

13

CEA

OFTR

CSBRT

BDO

RFDET

RFIN

RF

11
17

10
12

15

9

8

RF

detection

3TENV

OFTR

detection

BDO

detection

Sub-

A-ch.

traction

VCBA

B-ch.

Band

gap

Sub-

E-ch.

traction

F-ch.

VCBA

7

6
18

16
21

23

22

28
27

LD

LPD
N.C.

PDOWN
N.C.

TEOUT

TEN

FBAL

TBAL

A

4

PDA

B

5

PDB

E

1

PDE

F

2

PDF

2

ICs for Compact Disc/CD-ROM Player AN8839NSB

■ Pin Descriptions

Pin No. Description

1 Tracking signal input pin 1
2 Tracking signal input pin 2
3 Power supply pin
4 Focus signal input pin 1
5 Focus signal input pin 2
6 APC amp. input pin
7 APC amp. output pin
8 RF adding output pin

9 Input pin for the detection circuits
10 Capacitor connection pin for OFTR
11 Capacitor connection pin for HPF amp.
12 BDO output pin
13 APC control pin
14 GND pin

Pin No. Description

15 NRFDET output pin
16 Power-down input pin
17 OFTR output pin
18 N.C.
19 3TENV output pin
20 N.C
21 N.C
22 TE amp. input pin
23 TE amp. output pin
24 FE amp. output pin
25 FE amp. input pin
26 V

output pin

REF

27 TBAL control pin
28 FBAL control pin

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

Supply voltage V
Supply current I
Power dissipation P
Operating ambient temperature
Storage temperature

Note)*: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.

*

*

CC

CC

D

T

opr

T

stg

5.8 V
20 mA

116 mW

−20 to +75 °C

−55 to +125 °C

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage V

CC

2.4 to 5.5 V

3