HIT HA12209F Datasheet

HA12209F

Audio Signal Processor for Cassette Deck

(Dolby B-type NR with Recording System)

ADE-207-221A (Z)

2nd Edition

Jun. 1999

Description

HA12209F is silicon monolithic bipolar IC providing Dolby noise reduction system*, music sensor system, REC equalizer system and each electronic control switch in one chip.

Functions

• Dolby B-NR × 2 channel

• REC equalizer × 2 channel

• Music sensor × 1 channel

• Each electronic control switch to change REC equalizer, bias, etc.

Features

• REC equalizer is very small number of external parts and have 4 types of frequency characteristics

built-in.

• 2 types of input for PB, 1 type of input for REC.

• 70µ-PB equalizer changing system built-in.

• Dolby NR with dubbing double cassette decks.

Unprocessed signal output available from recording out terminals during PB mode.

• Provide stable music sensor system, available to design music sensing time and level.

• Controllable from direct micro-computer output.

• Bias oscillator control switch built-in.

• NR ON/OFF and REC/PB fully electronic control switching built-in.

• Normal-speed/high-speed, TYPE I/TYPE II and PB equalizer fully electron ic control switching built-in.

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

* Dolby is a trademark of Dolby Laboratories Licensing Corporation.

A license from Dolby Laboratories Licensing Corporation is required for the use of this IC.

HA12209F

Ordering Information

Standard Level

Operating Voltage

Product Package PB-OUT Level REC-OUT Level Dolby Level Min Max

HA12209F FP-56 580mVrms 300mVrms 300mVrms 10V 15V

Function

Product Dolby B-NR REC-EQ Music Sensor REC/PB Selection

HA12209F ❍❍❍❍ Note: Depending on the employed REC/PB head and test tape characteristics, there is a rare case that the

REC-EQ characteristics of this LSI can not be matched to the required characteristics because of built-in resistors which determined the REC-EQ parameters in this case, please inquire the responsible agent because the adjustment of built-in resistor is necessary.

Rev.2, Jun. 1999, page 2 of 49

HA12209F

Pin Description, Equivalent Circuit (VCC=12V, Ta=25°C, No signal, The value in the

table show typical value.)

Pin No. Pin Name Note Equivalent Circuit Pin Description

52 AIN (R) V = V

/ 2

CC

V

100k

VCC/2

48 AIN (L) 54 BIN (R) PB B deck input 45 BIN (L) 56 RIN (R) REC input 44 RIN (L) 6 EQIN (R) REC equalizer

37 EQIN (L) 4 DET (R) V = 2.6V

V

CC

PB A deck input

input

Time constant pin for Dolby-NR

V

GND

39 DET (L) 49 RIP V = VCC / 2 Ripple filter 1 BIAS1 V = 0.6V

Dolby bias current input

V

42 BIAS2 V = 1.3V

GND

REC equalizer bias current input

V

GND

Rev.2, Jun. 1999, page 3 of 49

HA12209F

Pin Description, Equivalent Circuit (VCC=12V, Ta=25°C, No signal, The value in the

table show typical value.) (cont)

Pin No. Pin Name Note Equivalent Circuit Pin Description

3 PBOUT (R) V = V

/ 2

CC

V

40 PBOUT (L) 5 RECOUT (R) REC output 38 RECOUT (L) 8 EQOUT (R) Equalizer output 35 EQOUT (L) 32 MAOUT MS amp. input * 53 ABO (R) V = VCC / 2

V

CC

GND

PB output

V

CC

Time constant pin for PB equalizer

1

46 ABO (L) 25 BIAS (C) V = VCC –

0.7

26 BIAS (N) Note: 1. MS : Music Sensor

V

12k15k

GND

V

CC

REC bias current output

V

Rev.2, Jun. 1999, page 4 of 49

HA12209F

Pin Description, Equivalent Circuit (VCC=12V, Ta=25°C, No signal, The value in the

table show typical value.) (cont)

Pin No. Pin Name Note Equivalent Circuit Pin Description

29 MSDET I = 0µA

31 MSIN V = VCC / 2

V

I

V

100k

CC

GND

CC

VCC/2

Time constant pin for MS *

1

MS input

33 MAI V = VCC / 2

27 MSOUT I = 0µA

Note: 1. MS : Music Sensor

MAOUT

V

CC

100k

V

45k

VCC/2

V

CC

V

I

DGND

MS amp. output

MS output (to MPU)

Rev.2, Jun. 1999, page 5 of 49

HA12209F

Pin Description, Equivalent Circuit (VCC=12V, Ta=25°C, No signal, The value in the

table show typical value.) (cont)

Pin No. Pin Name Note Equivalent Circuit Pin Description

10 PB A/B I = 20µA

V

22k

100k

I

GND

11 A 120/70 12 NORM/HIGH 14 B 120/70 16 BIAS

ON/OFF 17 RM ON/OFF 19 NR ON/OFF 20 REC/PB 21 LM ON/OFF 22, 23 V

CC

V = V

CC

50, 51 GND V = 0V GND pin 2, 7, 9, 13,

NC No connection 15, 18, 24, 28, 30, 34, 36, 41, 43, 47, 55

Mode control input

Power supply

Rev.2, Jun. 1999, page 6 of 49

Block Diagram

MAOUT

MAI

NC

EQOUT (L)

NC

EQIN (L)

RECOUT (L)

DET (L)

PBOUT (L)

NC

BIAS2

+

42

41 40 39 38 37 36 35 34 33 32 31 30 29

+

++

MSIN

NC

HA12209F

MSDET

+

NC

RIN (L)

BIN (L)

ABO (L)

NC

AIN (L)

RIP

AIN (R)

ABO (R)

BIN (R)

NC

RIN (R)

43

44

45

15k

46

47

48

49

+

50

51

52

53

54

55

56

12k

15k

1 2 3 4 5 6 7 8 9 10 11 12 13 14

DOLBY

B-NR

DOLBY

B-NR

EQ

+

EQ

+ + +

LPF

45k

100k

–

MS DET

+

BIAS

SW

28

27

26

25

24

23

22

21

20

19

18

17

16

15

NC

MSOUT

BIAS (N)

BIAS (C)

NC

V

CC

LM ON/

REC/

NR ON/

NC

RM /OFF

BIAS ON/

NC

BIASOUT

BIAS1

NC

DET (R)

PBOUT (R)

EQIN (R)

RECOUT (R)

NC

EQOUT (R)

/B PB

/70

A

/HIGH

B

/70

NC

Rev.2, Jun. 1999, page 7 of 49

HA12209F

Functional Description

Power Supply Range

HA12209F is designed to operate on single supply.

Table 1 Spply Voltage

Item Power Supply Range

Single Supply 10V to 15V Note: The lower limit of supply voltage depends on the line output reference level.

The minimum value of the overload margin is specified as 12dB by Dolby Laboratories.

Reference Voltage

For this IC, the reference voltage (V

/2) occurrence device is built-in as AC grand. A capacitor for a

CC

ripple filter is greatly small characteristic with 1/1 00 co mpar ed with co nventional device.

And, the reference voltage are provided for the left channel and the right channel separately.

The block diagram is shown as figure 1.

V

22 23

V

CC

50 51 49

GND PIR

CC

+

–

+

–

+

–

+

1µ

L channel Reference voltage

Music sensor Reference voltage

R channel Reference voltage

Unit

C : F

Figure 1 Reference Voltage

Rev.2, Jun. 1999, page 8 of 49

HA12209F

Operating Mode Control

HA12209F provides fully electronic switching circuits. And each operating mode control is controlled by parallel data (DC voltage).

Table 2 Control Voltage

Pin No. Lo Hi Unit Test Condition

10, 11, 12, 14, 16,

–0.2 to 1.0 4.0 to 5.3 V

17, 19, 20, 21

Note: 1. Each pins are on pulled down with 100kΩ internal resistor. Therefore, it will be low-level when

each pins are open.

2. Over shoot level and under shoot level of input signal must be the standardized. (High: 5.3V, Low: –0.2V)

3. For reduction of pop noise, connect 1µF to 22µF capacitor with mode control pins. But it is impossible to reduce completely in regard to Line mute, therefore, use external mute at the same time.

Input Block Diagram and Lev e l Diagram

Input Pin Measure

MS REF

5.7dB

REC

300mVrms

12k

FLAT

(120µ)

70µs

15k

CEX1

0dB

PB

REC

PB/REC=0dB/17dB

42.4mVrmsABO

RIN

AIN

BIN

Note: The each level shown above is typical value when offering PBOUT level to PBOUT pin.

25.9mVrms

21.3dB

300mVrms

PB

300mVrms

DOLBY

B-NR

Figure 2 Input Block Diagram

PBOUT 580mVrms

RECOUT 300mVrms

Unit

R : Ω C : F

Rev.2, Jun. 1999, page 9 of 49

HA12209F

PB Equalizer

By switching logical input level of 11 pin (for Ain) and 14 pin (for Bin), you can equalize corresponding to tape position at play back mode.

With the capacity CEX1 capacitance that we showed for figure 2 70 µs by the way figure seem to 3 they are decided.

Gv

t1 = CEX1 · (12k + 15k) t2 = CEX1 · 15k

(t1) (t2)

Figure 3 Frequency Characteristic of PB Equalizer

The sensitivity Adjustment of Music Sensor

Adjusting MS amp. gain by external resistor, the sensitivity of music sensor can set up.

f

PB(L)

–6dB

PB(R)

REP

45k

LPF

25kHz

MAI

100k

–

+

MS AMP

C26

0.01µ

MA OUT

R12

330k

MSIN

100k

Figure 4 Music Sensor Block Diagram

V

CC

DET

MS DET

+

C10

0.33µ

MS OUT

GND

DV

CC

R

L

Microcomputer

GND

Unit

R : Ω C : F

Rev.2, Jun. 1999, page 10 of 49

The sensitivity of Music Senso r

Gv

HA12209F

f1 = f2 = 25k [Hz]

f

f1 f2

1

2π · C26 · 100k

[Hz]

Figure 5 Frequency Characteristic of MSIN

Occasion of the external component of figure 4, f1 is 159Hz. A standard level of MS input pin

25.9mVrms, therefore, the sensitivity of music sensor (S) can request it, b y lower formulas.

A = MS Amp Gain B = PB input Gain × (1/2)* C = Sensed voltage

20log (A × B) = D [dB] PB input Gain = 21.3 [dB]

1

S = 20log

S = 14 – D [dB]

C

25.9 · A · B

[dB]

Note: 1. Case of one-sided channel input.

Time Constant of Detection

Figure 6(1) generally shows that detection time is in proportion to value of capacitor C10. But, with Attack*

2

and Recovery*3 the detection time differs exceptionally.

Recovery

Attack

Detection time

C10

Function Characteristic of MS (1) Function Characteristic of MS (2) Function Characteristic of MS (3)

Recovery Recovery

Attack Attack

Detection time

R12

Detection level

Detection time

Input level

Figure 6 Function Characteristics of MS

Like the figure 6(2), Recovery time is variably possible by value of resistor R12. But Attack time gets about fixed value. Attack time has dependence by input level. When a large signal is inputted, Attack time is short tendency.

Note: 2. Attack : Non-music → Music

3. Recovery : Music → Non-music

Rev.2, Jun. 1999, page 11 of 49

HA12209F

Music Sensor Output (MSOUT)

As for internal circuit of music sensor block, music sensor out pin is connected to the collector of NPN type directly, output level will be “high” when sensing no signal. And ou tput lev el will be “low” when sensing signal.

Connection with microcomputer, it is requested to use external pull up resistor (R

Note: Supply voltage of MSOUT pin must be less than V

voltage.

CC

= 10k to 22kΩ)

L

The Tolerances of External Components

For Dolby NR precision securing, please use external components shown at figure 7.

If leak-current are a few electrolytic-capacitor, it can be applicable to C2 and C15.

C15

0.1µ ±10%

39

DET (L)

HA12209

BIAS1

R1

33k

±2%

DET (R)

1 4

C2

0.1µ ±10%

Unit

R : Ω C : F

Figure 7 Tolerance of External Components

Low-Boost

+

CEX2

2.2µ

Vin

Rev.2, Jun. 1999, page 12 of 49

EQIN

REX1

20k

REX2

6.8k

GND

REX3

5.1k

+

CEX3

0.47µ

+

CEX4

0.47µ

REC EQ

Figure 8 Example of Low Boost Circuit

EQOUT

Unit

R : Ω C : F

HA12209F

External components shown figure 8 gives frequency response to take 6dB boost. And cut off frequency can request it, by lower formulas.

Gv

1

REX1 · REX2

R0 = [Ω]

REX1 + REX2

f1 f2

f1 = [Hz]

2π · CEX3 · (REX3 + R0)

f2 = [Hz]

2π · CEX3 · REX3

f

Figure 9 Frequency Characteristic of Low-Boost

Bias Switch

This series built-in DC voltage gene rator for bias oscillator and its bias switches.

External resistor R8, R10 which corresponded with tape positions and bias out voltage are relater with below.

Vbias = × (VCC – 0.7) [V]

R9

(R10 or R8) + R9

Bias switch follows to a logic of 14 pin (B 120/70).

Note: A current that flows at bias out pin, please use it less than 5mA.

BIAS (N)

BIAS (C)

26

25

R10

R8

Vbias

R9

GND

Figure 10 External Components of Bias Block

Rev.2, Jun. 1999, page 13 of 49

HA12209F

Absolute Maximum Rating (Ta=25°C)

Item Symbol Rating Unit Note

Max supply voltage V Power dissipation P Operating temperature Topr –40 to +75 °C Storage temperature Tstg –55 to +125 °C

max 16 V

CC

T

500 mW Ta ≤ 75°C

Rev.2, Jun. 1999, page 14 of 49

HA12209F

Electrical Characteristics (Ta = 25°C, VCC = 12V, Dolby Level = REC-OUT Level =

300mVrms = 0dB)

2

Other

No signal

RECOUT

level (dB)

——

fin

(Hz)

MUTE

120µ/

120 ON

70µ

–20

0

1k1k2k

OFF

120

–30

2k5k5k

OFF

120

THD=1%*

Rg=5.1kΩ, CCIR/ARM

——0

–20

–30

1k1k1k1k1k1k1k

OFF

120

OFF

120

OFF

120

OFF

120

+12

OFF

120

+12

OFF

120

+1200——

+12

1k1k10k5k—

ON

OFF

1207070

120

OFF

120

OFF

120

—

OFF

120

—

1

IC Condition*

A/B

A

A/BAA

REC/PB

NR

PB

ON/OFF

OFF

OFFQuiescent current

mAdBdB

30.0

28.5

23.0

27.0

15.0

25.5

PB

Q

I

G

V

REC

OFF

ON

dB

24.2

5.8

22.7

4.3

21.2

2.8

REC

V

G

ENC 2k (1)

AAA

REC

ON

dBdBdB

10.0

4.7

9.7

8.5

3.2

8.2

7.0

1.7

6.7

ENC 2k (2)

ENC 5k (1)

ENC 5k (2)

AAA

REC

ONONON

dBdB%dBdB

REC

RECPBREC

A/BAA/B

PB

OFF

dB

——0.3————

13.0

70.0

0.05

80.0

85.0

70.0

12.0

64.0Ñ70.0

Vo max

S/N

T.H.D.

CTRL (1)

75.0

60.0

CTRL (2)

CT A/B

A

A/B

REC/PB

OFF

dB

80.0

70.0

CT R/P

A/BAA

PBPBPBPBPB

OFF

dBdBdBdBV

—

27.0

23.8

80.0

25.5

22.3

70.0

24.0

20.8

EQ 1k

EQ 10k

V

G

MUTE

G

OFF

–7.4

–11.4

–15.4

ONVOL

V

3

OFF

1.5

1.0

—

A

PB

OFF

2.0 µA

—

OH

I

—

V

1.0

—

–0.2

ILVIH

V

—

V

5.3

—

4.0

=10V

CC

3. For inputting signal to one side channel

2. V

Item Symbol Min Typ Max Unit Test Condition

B type

Input AMP. gain

Encode boost

Signal handling

Signal to noise ratio

Total harmonic distortion

Channel separation

Crosstalk

Mute attenuation

MS sensing level*

70µ EQ gain

MS output low level

MS output leak current

Note: 1. Other IC condition : REC-MUTE OFF, TYPE I, Normal speed, Bias OFF

Control voltage —

Rev.2, Jun. 1999, page 15 of 49