HIT HA12209F Datasheet

REC equalizer

bias current input

bias current input

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 electronic 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 = VCC / 2		PB A deck input
52	AIN (R)	V = VCC / 2		PB A deck input

V 100k

VCC/2

48	AIN (L)

54	BIN (R)

45	BIN (L)

56	RIN (R)

44	RIN (L)

6	EQIN (R)

37	EQIN (L)

PB B deck input

REC input

REC equalizer input

DET (R)

V = 2.6V

VCC

Time constant

pin for Dolby-NR

GND

DET (L)

RIP

V = VCC / 2

Ripple filter

BIAS1

V = 0.6V

Dolby bias

current input

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 = VCC / 2			VCC	PB output
			V
					GND
40	PBOUT (L)
5	RECOUT (R)					REC output
38	RECOUT (L)
8	EQOUT (R)					Equalizer output
35	EQOUT (L)
32	MAOUT					MS amp. input *1
53	ABO (R)	V = VCC / 2			VCC	Time constant
						pin for PB
						equalizer
			V
			15k	12k
					GND
46	ABO (L)
25	BIAS (C)	V = VCC –			VCC	REC bias current
		0.7				output

26	BIAS (N)

Note:	1. MS : Music Sensor

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

MSDET

I = 0 A

VCC

Time constant

GND

pin for MS *1

MSIN

V = VCC / 2

VCC

MS input

V 100k

				VCC/2
33	MAI	V = VCC / 2	MAOUT	MS amp. output
				VCC
			100k
			V
			45k
			VCC/2
27	MSOUT	I = 0 A	VCC	MS output (to
		V		MPU)
		V		I

DGND

Note: 1. MS : Music Sensor

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

PB A/B

I = 20 A

Mode control

input

22k

100k

GND

A 120/70

NORM/HIGH

B 120/70

BIAS

ON/OFF

RM ON/OFF

NR ON/OFF

REC/PB

LM ON/OFF

22, 23

VCC

V = VCC

Power supply

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

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

HA12209F

Block Diagram

BIAS2

PBOUT (L)

DET (L)

RECOUT (L)

EQIN (L)

EQOUT (L)

MAI

MAOUT

MSIN

MSDET

RIN (L)

100k

MS DET

MSOUT

BIN (L)

– +

BIAS (N)

15k

BIAS

ABO (L)

45k

BIAS (C)

BIASOUT

12k

DOLBY

B-NR

AIN (L)

VCC

RIP

LPF

LM ON/

REC/

AIN (R)

DOLBY

NR ON/

B-NR

15k

12k

ABO (R)

BIN (R)

/OFF

BIAS ON/

RIN (R)

BIAS1

PBOUT (R)

DET (R)

RECOUT (R)

EQIN (R)

EQOUT (R)

PB /B

A /70

/HIGH

B /70

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 (VCC/2) occurrence device is built-in as AC grand. A capacitor for a ripple filter is greatly small characteristic with 1/100 compared with conventional device.

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

The block diagram is shown as figure 1.

22	23	VCC
22	23
				+
				–
				L channel Reference voltage
VCC				+
				–
				Music sensor Reference voltage
				+
				–
GND 50	51	49		R channel Reference voltage
GND 50	51	49	PIR
		+
			1	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.

Unit

Test Condition

10, 11, 12, 14, 16, –0.2 to 1.0

4.0 to 5.3

Input Pin

Measure

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.

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 1µ F to 22µ F 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 Level Diagram

			MS	REF
				5.7dB	PBOUT
				5.7dB	580mVrms
				REC	580mVrms
				REC
			300mVrms	PB
AIN		FLAT		300mVrms
AIN	300mVrms	(120µ )
	300mVrms		PB
	21.3dB	0dB	PB	DOLBY	RECOUT
	21.3dB

BIN	25.9mVrms	70µ s	REC	B-NR	300mVrms
			REC
			PB/REC=0dB/17dB
	12k
		15k
	ABO		42.4mVrms
		CEX1	RIN		Unit	R : Ω
						C : F

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

Figure 2 Input Block Diagram

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 s by the way figure seem to 3 they are decided.

Gv
	f
(t1)	(t2)

t1 = CEX1 ·(12k + 15k)

t2 = CEX1 ·15k

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.

		VCC		DVCC
REP
	C26	R12		+ C10
	0.01µ	330k		0.33µ
PB(L)
MAI	MA	MSIN	MS	RL
	OUT		DET
100k
45k
–		DET		MS OUT
+		DET		Microcomputer
+	MS AMP
–6dB
–6dB				GND
LPF				GND
25kHz		100k
		100k		GND
				GND
				Unit	R : Ω
PB(R)					C : F

Figure 4 Music Sensor Block Diagram

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

HA12209F

The sensitivity of Music Sensor

f1	=		1	[Hz]
		2π	·C26 ·100k

f2	= 25k		[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, by lower formulas.

A = MS Amp Gain

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

20log (A × B) = D [dB]

PB input Gain = 21.3 [dB]

S = 20log	C	[dB]

25.9 ·A ·B

S = 14 – D [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.

	time	Recovery
	Detection	Recovery
	Detection	Attack
		Attack

		C10

Function Characteristic of MS (1)

time	Recovery	time	Recovery
time		time
Detection	Attack	Detection	Attack
	Attack		Attack
	R12	Detection level	Input level
			Input level

Function Characteristic of MS (2)

Function Characteristic of MS (3)

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 output level will be “low” when sensing signal.

Connection with microcomputer, it is requested to use external pull up resistor (RL = 10k to 22kΩ )

Note: Supply voltage of MSOUT pin must be less than VCC voltage.

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	DET (R)
1	4
R1	C2
33k	0.1µ	Unit	R : Ω
±2%	±10%	Unit	R : Ω
±2%	±10%		C : F
			C : F

Figure 7 Tolerance of External Components

Low-Boost

CEX2 REX1 2.2µ 20k

Vin

EQIN

CEX4 0.47µ

REX2 REX3 6.8k 5.1k

+ CEX3 0.47µ

GND

EQOUT

REC EQ

Unit R : Ω

C : F

Figure 8 Example of Low Boost Circuit

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

HA12209F

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

Gv
	f1 =		1		[Hz]
	f1 =	2π	·CEX3 ·(REX3 + R0)		[Hz]
	f2 =	2π	1	[Hz]	R0 = REX1 ·REX2	[Ω	]
		2π	·CEX3 ·REX3		REX1 + REX2
	f
f1	f2

Figure 9 Frequency Characteristic of Low-Boost

Bias Switch

This series built-in DC voltage generator 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 =	R9	× (VCC – 0.7) [V]
	(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.

R10
BIAS (N) 26
R8	Vbias
R8
BIAS (C) 25
	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	VCC max	16	V

Power dissipation	PT	500	mW	Ta ≤ 75°C
Operating temperature	Topr	–40 to +75	°C

Storage temperature	Tstg	–55 to +125	°C

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

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

Item

Symbol

Min

Typ

Max

Unit

Test Condition

IC Condition*1

REC/PB A/B

120µ /

MUTE

fin

RECOUT Other

ON/OFF

70µ

(Hz)

level (dB)

Quiescent current

15.0

23.0

30.0

OFF

120

—

No signal

Input AMP. gain

GV PB

25.5

27.0

28.5

OFF

A/B

120

OFF

GV REC

21.2

22.7

24.2

OFF

REC

120

OFF

B type

ENC 2k (1)

2.8

4.3

5.8

REC

120

OFF

–20

Encode boost

ENC 2k (2)

7.0

8.5

10.0

REC

120

OFF

–30

ENC 5k (1)

1.7

3.2

4.7

REC

120

OFF

–20

ENC 5k (2)

6.7

8.2

9.7

REC

120

OFF

–30

Signal handling

Vo max

12.0

13.0

—

REC

120

OFF

—

THD=1%*2

Signal to noise ratio

S/N

64.0

70.0

—

REC

120

OFF

—

Rg=5.1kΩ , CCIR/ARM

Total harmonic distortion

T.H.D.

0.05

0.3

REC

120

OFF

Channel separation

CTRL (1)

70.0

80.0

—

OFF

A/B

120

OFF

+12

CTRL (2)

75.0

85.0

—

OFF

REC

120

OFF

+12

Crosstalk

CT A/B

60.0

70.0

—

OFF

A/B

120

OFF

+12

CT R/P

70.0

80.0

—

OFF

REC/PB

A/B

120

OFF

+12

Mute attenuation

MUTE

70.0

80.0

—

OFF

120

+12

70µ EQ gain

GV EQ 1k

24.0

25.5

27.0

OFF

A/B

OFF

GV EQ 10k

20.8

22.3

23.8

OFF

A/B

OFF

10k

MS sensing level*3

VON

–15.4

–11.4

–7.4

OFF

120

OFF

—

MS output low level

VOL

—

1.0

1.5

OFF

120

OFF

—

MS output leak current

IOH

—

2.0

µ A

OFF

120

OFF

—

Control voltage

VIL

–0.2

—

1.0

—

VIH

4.0

—

5.3

—

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

2.VCC=10V

3.For inputting signal to one side channel

Characteristics Electrical 0dB) = 300mVrms
V 25°C, = (Ta
CC
= Level OUT-REC = Level Dolby 12V, =	HA12209F

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