Philips tda1602a DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA1602A

Double-deck playback/record IC
(DDPR)

Product specification
File under Integrated Circuits, IC01

April 1992

Philips Semiconductors Product specification

Double-deck playback/record IC (DDPR) TDA1602A

FEATURES

• Two stereo playback preamplifiers

• Stereo playback amplifier

• High speed dubbing headswitch for channel A

• Record/playback headswitch for channel B

• Dubbing switch

• Stereo record amplifier

• Automatic level control

• Erase and bias oscillator

• Tape selector

• Reference voltage source (1/2 VP)

• Logic part.

ORDERING INFORMATION

EXTENDED TYPE

NUMBER

TDA1602A 40 DIL plastic SOT129

Note

1. SOT129-1; 1996 August 29.

PINS PIN POSITION MATERIAL CODE

GENERAL DESCRIPTION

The TDA1602A is a Dolby B compatible recorder IC, which
has been designed for use in double-deck recorders for
Ferro/Chrome with high speed dubbing. The device
performs all the basic recorder functions and needs only a
very simple peripheral circuit of a few components. The
DDPR may also be used in applications with automatic
reverse.

All functions of the DDPR are selected by externally
applied DC voltage levels. The circuit is designed for use
with a mains-fed asymmetrical power supply but can also
be used with a symmetrical power supply (because of its
own 1/2 VP reference voltage source).

PACKAGE

(1)

April 1992 2

Philips Semiconductors Product specification

Double-deck playback/record IC (DDPR) TDA1602A

QUICK REFERENCE DATA

All voltages referenced to pin 12, all currents positive into the IC

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

P

Playback amplifier

G gain f = 315 Hz − 57 − dB
S/N signal-to-noise ratio − 53 − dB
THD total harmonic distortion V

Headswitch

V

ON(p-p)

Record amplifier

G gain f = 315 Hz − 14 − dB
S/N signal-to-noise ratio − 65 − dB
THD total harmonic distortion V

Automatic level control

∆V

O

Oscillator

f

OSC

I

O(peak)

V

O(p-p)

Reference voltage

V

ref

Logic part

I

I

supply voltage range 7.0 − 18.0 V

= 150 mV − 0.1 − %

O

maximum voltage (peak-to-peak value) record mode −−90 V

= 1.5 mV − 0.3 − %

Orecord

output voltage variation ∆V

= 20 dB − 1 − dB

line

frequency range 60 − 120 kHz
output current (peak value) 140 −−mA
output voltage (peak-to-peak value) −−36 V

output voltage − 1/2 V

P

− V

input current

pins 8 and 10 − 100 −µA
pins 7 and 9 −−900 µA

April 1992 3

Philips Semiconductors Product specification

Double-deck playback/record IC (DDPR) TDA1602A

handbook, full pagewidth

connection for high speed

dubbing capacitor left

signal ground for deck A

connection for high speed

dubbing capacitor right

deck A right input

playback equalization

left: HF adjustment

playback equalization

right: HF adjustment

record equalization

right: HF adjustment

record equalization

right: LF adjustment

record amplifier right output

deck A left 

input

playback equalization

left: LF adjustment

38

LS/HS

37

36

35

LS/HS

34
33

32

31
21

29

AL

A

AR

LS/HS

AHS

BR

∑

BL

L

Fe/Cr

∑

R

Fe/Cr LS/HS

ALC

R

L

playback equalization
right: LF adjustment

39 40

LS/HS

TDA1602A

VR

VR

1/2

1/2

S/M

1

line out left

2

line out right

3

line in right

4

source-selector out 
right

5

source-selector out left

record amplifier left output

record equalization
left: HF adjustment

record equalization

left: LF adjustment

deck B left input:

connection input playback

deck B left input:

connection HF biasing

signal ground for deck B

deck B right input:

connection HF biasing

deck B right input:

connection input playback

VTR

28

30
22

27

P/R

26

25

24

P/R

23

K

ALC

LS/HS

BL

B

BR

adjustment of limiting

and setting time

20 19

adjustment of
release time

S/M

Fe/Cr

LS/HS

R/P

LOGIC

S/M

A/B

Fe/Cr

P/R/HSR

I

V

V

control

OSCILLATOR

ref
ref

V–

V–

10

11
12
13
14

15

16

17
18

MLA335

6

line in left

signal/mute input

7

for line out

8

channel selection input

9

tape selection input
playback/record/high speed

record selection input

equalization adjustment
reference voltage source
ground; substrate
supply voltage

amplitude control
input for oscillator

oscillator output
oscillator ground
oscillator output

Fig.1 Block diagram.

April 1992 4

Philips Semiconductors Product specification

Double-deck playback/record IC (DDPR) TDA1602A

PINNING

SYMBOL PIN DESCRIPTION

LOL 1 line out left
LOR 2 line out right
LIR 3 line in right
SOR 4 source-selector out right
SOL 5 source-selector out left
LIL 6 line in left
S/M 7 signal/mute input for line out
A/B 8 channel selection input
TS 9 tape selection input
P/R/HSR 10 playback/record/high-speed record selection input
EQUADJ 11 equalization adjustment
V

ref

GND 13 ground; substrate
V

P

OSCCON 15 amplitude control input for oscillator
OSCO1 16 oscillator output 1
OSCGND 17 oscillator ground
OSCO2 18 oscillator output 2
ADJRT 19 adjustment of release time
ADJLST 20 adjustment of limiting and setting time
RECERLF 21 record equalization right: LF adjustment
RECELLF 22 record equalization left: LF adjustment
BRIP 23 deck B right input: connection input playback
BRIBHF 24 deck B right input: connection HF biasing
SGNDB 25 signal ground for deck B
BLIBHF 26 deck B left input: connection HF biasing
BLIP 27 deck B left input: connection input playback
RECOL 28 record amplifier left output
RECOR 29 record amplifier right output
RECELHF 30 record equalization left: HF adjustment
RECERHF 31 record equalization right: HF adjustment
PERHF 32 playback equalization right: HF adjustment
PELHF 33 playback equalization left: HF adjustment
ARI 34 deck A right input
HSDR 35 connection for high speed dubbing capacitor right
SGNDA 36 signal ground for deck A
HSDL 37 connection for high speed dubbing capacitor left
ALI 38 deck A left input
PELLF 39 playback equalization left: LF adjustment
PERLF 40 playback equalization right: LF adjustment

12 reference voltage source

14 supply voltage

April 1992 5

Philips Semiconductors Product specification

Double-deck playback/record IC (DDPR) TDA1602A

handbook, halfpage

P / R / HSR

EQUADJ

OSCCON

OSCGND

LOL

LOR

LIR

SOR

SOL

LIL

S / M

A / B

TS

V

GND

V

OSCO1

ref

1
2
3
4
5
6
7
8
9

10

TDA1602A

11
12

13

P

15
16
17

40
39
38
37
36
35
34
33
32
31
30
29
28
2714
26
25
24

PERLF
PELLF

ALI
HSDL
SGNDA
HSDR

ARI
PELHF
PERHF
RECERHF
RECELHF
RECOR
RECOL
BLIP

BLIBHF
SGNDB
BRIBHF

MLA336

23
22
21

BRIP
RECELLF

ADJRT

18
19
20

OSCO2

ADJLST RECERLF

Fig.2 Pin configuration.

April 1992 6

Philips Semiconductors Product specification

Double-deck playback/record IC (DDPR) TDA1602A

FUNCTIONAL DESCRIPTION
Playback pre-amplifier

The playback preamplifier is a linear low-noise amplifier
with an internal fixed gain of 26.4 dB. The relevant
preamplifier for playback of channel A or B can be selected
externally.

Playback amplifier

The frequency response of the playback amplifier is
determined by two external capacitors (Right: C6 and C21,
Left: C5 and C20). The different equalization curves for
Ferro and Chrome (with time constants of 120 µs and 70
µs respectively) are controlled by the logic part of the
circuit.

High speed dubbing headswitch

This electronic switch is used to connect, or disconnect, an
extra external capacitor (Right: C4, Left: C1) in parallel
with the gap-loss correction capacitor.

Record/playback headswitch

This is a two position electronic switch which switches the
relevant side of the head to the signal ground.

ECORD POSITION

R
In the record mode the input of the playback amplifier is

switched to the signal ground. In this way the bias and
audio signal current can be applied to the head.

LAYBACK POSITION

P

Automatic level control

The automatic level control (ALC) has a control range of 20
dB. The variation in the output voltage is less than 2 dB
(see Fig.5). The attack and recovery time of the ALC can
be adjusted externally.

Erase and bias oscillator

The erase and bias oscillator provides the following:
A high frequency bias current to enable a linear magnetic

recording process on the tape.
A sinusoidal voltage, the amplitude of which is determined

by the applied voltage at pin 15 (see also Fig.6).
The necessary current for erasing the tape which is only

activated when the circuit is switched to the record mode.

Reference voltage source

This circuit delivers an output voltage which is half the
supply voltage. The output voltage can be taken as signal
ground. In this way a symmetrical power supply is
available for the total recorder application.

Logic part

The logic part converts the incoming information from the
logic input into the necessary switching signals, used in the
analog parts of the circuit. The conversion is determined
by the level of the input signal (see Fig.7). The logic inputs
(pins 8 and 10) are independent of signal rise and fall
times. The inputs at pins 7 and 9 enable smooth switching
between signal/mute and Ferro/Chrome respectively.

In the playback mode the biasing side of the head is
switched to the signal ground.

Record amplifier

The frequency response of the record amplifier is
determined by means of two external capacitors (Right:
C11 and C12; Left: C17 and C18).

By omitting these capacitors a flat frequency response is
obtained for Dolby application.

April 1992 7