HIT HA12219NT Datasheet

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HA12219NT

Audio Signal Processor for Cassette Deck

ADE-207-258A

2nd Edition July 1998

Description

HA12219NT is silicon monolithic bipolar IC providing PB equalizer, REC equalizer system and each electronic control switch in one chip.

Functions

PB equalizer

×

2 channel

REC equalizer

×

2 channel

Each electronic control switch to change REC/PB etc.

REC MUTE

REC head return switch

Features

REC equalizer is very small number of external parts, built-in 2 types of frequency characteristics.

PB equalizer circuit built-in.

REC /PB are possible with TYPE I/II.

Controllable from direct micro-computer output.

Available to reduce substrate-area because of high integration and small external parts.

HA12219NT

Pin Description, Equivalent Circuit (VCC = 12 V, Vref = 5.6 V, Ta = 25°C, No signal, The value in the table show typical value.)

Pin No.

Pin Name

Note

Equivalent Circuit

 

 

 

Pin Description

1

VCC

V = VCC

 

 

 

 

 

 

 

 

 

VCC pin

2

REC-OUT(L)

V = Vref

 

 

 

 

 

 

 

 

VCC

REC-EQ output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

3

REC-OUT(R)

 

 

 

 

4

REC-RETURN

V = Vref

 

VCC

REC return

 

 

V’ = Vref

I

 

 

 

 

 

 

 

 

 

 

V

4 V,

 

 

 

 

5 pin, 6 pin

 

 

 

 

 

I

 

 

 

 

 

GND

 

 

5

PB-IN B(L)

 

 

 

PB B deck input

6

PB-IN B(R)

 

 

 

 

7

VREF

V = Vref

 

VCC

Reference

 

 

V’ = VCC / 2

 

 

 

 

 

 

10 k

 

 

 

 

 

V

V,

 

 

 

 

10 k

 

 

 

 

 

 

GND

 

8

PB-IN A(L)

V = Vref

VCC

 

PB A deck input

PB-NF

9

PB-IN A(R)

 

 

Rev.2, Jul. 1998, page 2 of 29

HA12219NT

Pin Description, Equivalent Circuit (VCC = 12 V, Vref = 5.6 V, Ta = 25°C, No signal, The value in the table show typical value.) (cont)

Pin No.

Pin Name

Note

Equivalent Circuit

 

 

 

 

 

 

Pin Description

12

PB-NF(R)

PB-IN = Vref

 

 

 

 

 

VCC

 

 

 

 

 

 

PB-EQ feed back

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PB-IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

17

PB-NF(L)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

PB-EQ(R)

PB-OUT = Vref

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NAB output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PB-OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16

PB-EQ(L)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

REC-IN(R)

V = Vref

 

 

 

 

 

 

 

 

 

 

 

 

VCC

REC-EQ input

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 k

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vref 7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22

REC-IN(L)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

PB-OUT(R)

V = Vref

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

PB output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

PB-OUT(L)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

A 120/70

I = 20 A

 

 

 

 

 

 

VCC

Mode control input

 

 

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

22k

100 k

GND

19A/B

20B I/II

Rev.2, Jul. 1998, page 3 of 29

HA12219NT

Pin Description, Equivalent Circuit (VCC = 12 V, Vref = 5.6 V, Ta = 25°C, No signal, The value in the table show typical value.) (cont)

Pin No.

Pin Name

Note

Equivalent Circuit

Pin Description

10

IREF

V = 1.2 V

 

 

 

Equalizer

 

 

 

 

 

 

reference current

 

 

 

 

 

 

 

 

 

 

 

 

input

 

 

 

 

 

 

 

 

 

 

 

 

 

11

GND

GND pin

 

 

 

Rev.2, Jul. 1998, page 4 of 29

HIT HA12219NT Datasheet

HA12219NT

Block Diagram

 

 

 

 

 

 

 

 

 

 

 

 

R : Ω C : F

 

 

12

 

 

 

 

A

 

GND

11

Unit

 

 

 

 

 

 

B

 

 

 

 

 

+ −

 

 

 

 

 

 

 

 

13

120/70

 

 

 

 

 

IREF

10

 

 

 

 

 

 

 

 

 

 

 

 

14

PB-OUT(R)

 

 

 

 

 

PB-INA(R)

9

 

 

 

 

 

 

 

 

 

 

 

 

 

15

PB-OUT(L)

 

 

 

 

 

PB-INA(L)

8

 

 

 

 

 

 

 

 

 

 

 

 

 

16

120/70

 

 

 

 

 

VREF

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

− +

 

 

 

 

 

 

 

 

 

17

 

 

 

 

 

 

 

 

6

PB-INB(R)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

/70

A

18

 

 

 

 

B

SW

 

 

5

PB-INB(L)

 

 

 

 

 

 

 

 

 

 

A/

19

 

 

 

 

 

Return

 

 

4

REC-RETURN

 

 

 

 

 

 

 

 

 

 

 

/II

B

20

 

 

 

 

 

 

REC-OUT(R)

3

+

 

 

 

 

 

 

 

 

 

 

+

21

REC-IN(R)

REC-EQ(R)

 

REC-OUT(L)

2

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

22

 

)

L

REC-EQ

 

CC

V

1

 

 

 

 

 

 

 

REC-IN(L)

 

(

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CC

 

 

 

 

 

 

 

 

 

 

 

 

V

 

 

 

 

 

 

 

 

 

 

 

 

Rev.2, Jul. 1998, page 5 of 29

HA12219NT

Parallel Data Format

Pin No.

Pin Name

Lo

Mid

Hi

18

A 120/70

*

*

 

 

 

 

 

19

A/B

B

A

A

 

 

Return SW OFF

Return SW ON

Return SW ON

 

 

REC Mute ON

REC Mute ON

REC Mute OFF

 

 

 

 

 

20

B I/II

REC-EQ *

REC-EQ *

 

 

TYPE I

 

TYPE II

 

 

 

 

Note: PB-EQ 120/70 logic

 

 

 

 

 

A/B

 

 

A 120/70

B I/II

 

 

 

Lo

Mid

Hi

 

 

 

 

 

Lo

Lo

120

120

120

Lo

Hi

70

120

120

Hi

Lo

120

70

70

Hi

Hi

70

70

70

Rev.2, Jul. 1998, page 6 of 29

HA12219NT

Functional Description

Power Supply Range

HA12219NT is designed to operate on single supply, shown by table 1.

Table 1

Supply Voltage

 

Item

 

Power Supply Range

 

 

Single Supply

9.5 V to 15.0 V

 

 

 

Reference Voltage

As AC reference (Vref) of this IC has not a current drivability, Vref fluctuates by A/B switching of PB-EQ. Provided it causes you anxiety, please supply 7 pin with approximate 1/2 VCC voltage.

For example, a suitable circuit is shown by figure 1.

This IC has a capacitor charger for the Vref, indicated to the pin interface circuit figure.

VCC

 

 

1

 

Lch PB-EQ Reference voltage

 

 

470 Ω

 

Lch REC-EQ Reference voltage

 

 

 

 

Rch REC-EQ Reference voltage

11 GND

7 Vref

Rch PB-EQ Reference voltage

 

 

+470

µ F

Figure 1 Reference Voltage Circuit

Rev.2, Jul. 1998, page 7 of 29

HA12219NT

Operating Mode Control

HA12219NT provides fully electronic switching circuits. And each operating mode control is controlled by parallel data (DC voltage).

Table 2 shows the control voltage of each control input pin.

Table 2

Control Voltage (Vth)

 

 

 

 

 

 

 

 

 

 

Pin No.

Lo

Mid

Hi

Unit

Test Condition

 

 

 

 

 

 

18, 20

0.0 to 0.5

2.4 to V CC

V

Input Pin Measure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19

0.0 to 0.5

1.2 to 1.8

2.4 to VCC

V

 

 

 

 

 

 

 

 

 

 

 

Note: 1. Each pin is pulled down with 100 kΩ

internal resistor.

16 to 18 pins are low-level when each pin

 

is open.

 

 

 

 

 

 

 

 

 

 

 

2.Over shoot level and under shoot level of input signal must be the standardized. (High: Less than VCC, Low: More than –0.2 V)

Block Diagram

Figure 2 shows the block diagram.

As this IC is built-in REC return switch, the configuration system can be simple system using a few external component and the REC/PB head.

About these logics, please look at the Parallel Data Format.

 

REC-OUT(L)

 

 

REC - EQ

REC-IN

 

 

2

 

22

 

 

4

 

 

 

B head

 

 

Return SW

 

 

5

B

 

 

 

PB-IN B(L)

 

PB-OUT

 

 

+

 

 

 

 

 

 

 

15

 

 

8

A

A head

PB-IN A(L)

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

10

13

Normal Speed

 

 

 

PB-A

 

 

 

 

 

Vref

 

 

 

 

 

Figure 2 Block Diagram (Lch)

Rev.2, Jul. 1998, page 8 of 29

HA12219NT

Level Block Diagram

The gain establishment of PB-EQ considers PB output level

{(external AMP+PB AMP <HA12136A>) = 580 mV (Dolby Level)} like figure 3 as the target.

Regarding REC-EQ adjust the gain in front of input to this IC.

Similarly to PB, it consider Dolby level as a standard. And R1 needs the value more than 5.6 k.

Because mode establishment resistances are built-in, REC-EQ frequency characteristics are respectively fixed value.

In case the change of the frequency characteristics are necessary, please inquire the responsible agent because the adjustment of resistors is necessary.

580 mV

(Dolby level)

HA12136A

63.6 mV

0.6 mV

40.5 dB

26 dB

PB-EQ

Dolby IC

Figure 3 PB Level Block Diagram (120 s, 1 kHz)

Rev.2, Jul. 1998, page 9 of 29

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