HIT HA12177, HA12175, HA12174, HA12173 Datasheet

HA12173 Series

Audio Signal Processor for Car Deck and Cassette Deck (Dolby B/C-type NR with PB Amp)

ADE-204-016

1st Edition Nov. 1992

Description

HA12173 series are silicon monolithic bipolar IC providing Dolby noise reduction system*, music sensor and PB equalizer system in one chip.

Functions

•	PB equalizer	×	2 channel
•	Dolby B/C-NR	×	2 channel
•	Music sensor	×	1 channel

Features

•Different type of PB equalizer characteristics selection (normal/chrome or metal) is available with fully electronic control switching built-in.

•2 type of input selection (RADIO/TAPE) is available.

•Changeable to Forward, Reverse-mode for PB head with fully electronic control switching built-in.

•Available to change music sensing level by external resistor.

•Music sensing level selection is available with fully electronic control switching built-in.

•Available to change frequency response of music sensor.

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

•4 type of PB-out level.

•Available to allow common PCB designs with HA12163 series.

*Dolby is a trademark of Dolby Laboratories Licensing Corporation.

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

HA12173 Series

Ordering Information

				Operating voltage range*1
Products	PB-OUT level	REC-OUT level	Dolby-level	Min	Max
HA12173	300 mVrms	300 mVrms	300 mVrms	7.0V	16V
HA12174	450 mVrms	300 mVrms	300 mVrms	8.0V	16V
HA12175	580 mVrms	300 mVrms	300 mVrms	9.5V	16V
HA12177	775 mVrms	300 mVrms	300 mVrms	12.0V	16V

Note: 1. The minimum operating voltage of HA12173 series are defferent from the HA12163 series (Dolby B - type).

Pin Description (VCC = 9 V Single supply, Ta = 25°C, No signal, The value in the table show typical value)

	Terminal		DC
Pin No.	name	Zin	voltage Equivalent circuit	Description
2, 41	TAI	100 kΩ	VCC/2	Tape input

VCC / 2

4, 39

RAI

Radio input

25

MSI

Music sensor

rectifier input

10, 33

HLS DET

—

2.5 V

Time constant

pin for rectifier

11, 32	LLS DET
3	BIAS	—	0.28 V						Reference
									current input

GND

Rev.1, Nov. 1992, page 2 of 66

HA12173 Series

Pin Description (VCC = 9 V Single supply, Ta = 25°C, No signal, The value in the table show typical value) (cont)

Terminal

DC

Pin No.

name

Zin

voltage Equivalent circuit

Description

24

MS DET

—

V CC

Time constant

pin for rectifier

GND

19

MS GV

100 kΩ —

Mode control

input

DGND

GND

40	RIP	—	V CC/2															Ripple filter

Rev.1, Nov. 1992, page 3 of 66

HA12173 Series

Pin Description (VCC = 9 V Single supply, Ta = 25°C, No signal, The value in the table show typical value) (cont)

	Terminal		DC
Pin No.	name	Zin	voltage Equivalent circuit					Description
43, 56	EQ OUT	—	V CC/2			V CC		Equalizer output

GND

6, 37	PB OUT
30	MS VREF
26	MA OUT
47, 52	VREF

Play back (Decode) output

Reference voltage buffer output

Music sensor amp output

Reference voltage buffer output

12, 31	REC OUT									Recording
										(Encode) output
8, 35	SS2									Spectral skewing
										amp. output
44, 55	EQ OUT-M —		V CC/2					VCC		Equalizer output
										(Metal)

GND

Rev.1, Nov. 1992, page 4 of 66

HA12173 Series

Pin Description (VCC = 9 V Single supply, Ta = 25°C, No signal, The value in the table show typical value) (cont)

	Terminal		DC
Pin No.	name	Zin	voltage Equivalent circuit								Description
21	MS OUT	—	—						MS	VCC	Music sensor
											output to MPU

									D GND
22	VCC	—	V CC	—					Power supply
23	MS VCC
20	D GND	—	0V	—					Digital (Logic)
										ground
27	MS GND									Music sensor
										ground
49, 50	GND									Ground
48, 51	FIN	—	V CC/2							PB - EQ input for
										forward

46, 53	RIN		PB - EQ input for
			reverse
45, 54	NFI		Negative
			feedback
			terminal of PB -
			EQ amp.
28	NOI		Negative
			feedback input
			for normal speed
29	FFI		Negative
			feedback input
			for FF or REW

Rev.1, Nov. 1992, page 5 of 66

HA12173 Series

Pin Description (VCC = 9 V Single supply, Ta = 25°C, No signal, The value in the table show typical value) (cont)

	Terminal		DC
Pin No.	name	Zin	voltage Equivalent circuit							Description
13	C/B	100 kΩ	—							Mode control
										input

D GND

GND

14

ON/OFF

15

REC/PB

16

TAPE/RADIO

17

120 µ/170 µ

18

F/R

7, 36

SS1

—

V CC/2

Spectral skewing

amp. input

9, 34	CCR	—	V CC/2				Current
							controled
							resistor output

1, 5, 38, 42 NC	No connection

Rev.1, Nov. 1992, page 6 of 66

HA12173 Series

Block Diagram

					RADIO		PBOUT(L)
					IN(L)							RECOUT(L)
EQOUT(L)			+
	42	41	40		39	38	37	36	35	34	33	32	31	30	29
43			RIP										MS VREF		28
	120/70
44															27
														MS GND
	–	+
45								DOLBY B/C-NR							26
					T/R
															25
46
	R/F
47	VREF(L)														24	+
			×	1
48															23		VCC
										S/R				DET MS V
															CC
49	GND										–				22
						+									VCC		To Microcomputer
									LPF		+				21	MS OUT
50	GND					–
											MS AMP
51															D GND 20
	VREF(R)		×	1											19	MS GV (S/R)
52
					T/R
	R/F							DOLBY B/C-NR								F/R
53															18
54															17	120 µ/70 µ
	–	+
																TAPE/RADIO
55															16		From
																	Microcomputer
	120/70															REC/PB
															15
56
			BIAS
	1	2	3		4	5	6	7	8	9	10	11	12	13	14
															ON/OFF
EQOUT(R)
															C/B
					RADIO		PBOUT(R)						RECOUT(R)
					IN(R)

Absolute Maximum Ratings

Item	Symbol	Ratings	Unit	Condition
Supply voltage	VCC max	16	V
Power dissipation	PT	500	mW	Ta≤ 85°C
Operating temperature	Topr	–40 to +85	°C
Storage temperature	Tstg	–55 to +125	°C

Rev.1, Nov. 1992, page 7 of 66

HA12173 Series

Electrical Characteristics (Ta = 25°C Dolby level 300 mVrms (Rec-out pin))

						HA12173 VCC = 9.0 V						HA12174 VCC = 9.0 V
						HA12175 VCC = 12.0 V						HA12177 VCC = 14.0 V
Item		Symbol		Min	Typ	Max		Unit		Test Condition				Note
Quiescent current		IQ		10.0	16.0	24.0		mA		No input				No Signal
														NR-B70 µ
Input	HA12173	GvIA TAI		18.5	20.0	21.5		dB		Vin = 0 dB, f = 1 kHz
Amp.		GvIA RAI		15.5	17.0	18.5
gain	HA12174	GvIA TAI		22.0	23.5	25.0				Vin = 0 dB, f = 1 kHz
		GvIA RAI		19.0	20.5	22.0
	HA12175	GvIA TAI		24.2	25.7	27.2				Vin = 0 dB, f = 1 kHz
		GvIA RAI		21.2	22.7	24.2
	HA12177	GvIA TAI		26.7	28.2	29.7				Vin = 0 dB, f = 1 kHz
		GvIA RAI		23.7	25.2	26.7
B-type Encode		ENC –2k		2.8	4.3	5.8		dB		Vin = –20 dB, f = 2 kHz
boost		ENC –5k		1.7	3.2	4.7				Vin = –20 dB, f = 5 kHz
C-type Encode		ENC –1k (1)		3.9	5.9	7.9		dB		Vin = –20 dB, f = 1 kHz
boost		ENC –1k (2)		18.1	19.6	21.6				Vin = –60 dB, f = 1 kHz
		ENC –700		9.8	11.8	13.8				Vin = –30 dB, f = 700 Hz
Signal handling		Vo max		12.0	13.0	—	dB		THD = 1%, f = 1 kHz				*1
Signal to noise		S/N		60.0	64.0	—	dB		Rg = 5.1 k Ω		, CCIR/ARM
ratio
THD		THD		—	0.05	0.3	%		Vin = 0 dB, f = 1 kHz
Channel		CT RL (1)		70.0	85.0	—	dB		Vin = 0 dB, f = 1 kHz				RAI input
separation		CT RL (2)		50.0	60.0	—			Vin = 0.6 mVrms, f = 1 kHz				EQ input
Crosstalk		CT EQ →	RAI	70.0	80.0	—			Vin = 0.6 mVrms, f = 1 kHz				EQ input
		CT RAI →	EQ	50.0	60.0	—			Vin = 0 dB, f = 1 kHz				RAI input
PB - EQ gain		Gv EQ 1k		37.0	40.0	43.0		dB		Vin = 0.6 mVrms, f = 1 kHz			120 µ
		Gv EQ 10k (1)		33.0	36.0	39.0				Vin = 0.6 mVrms, f = 10 kHz
		Gv EQ 10k (2)		29.0	32.0	35.0							70 µ
PB - EQ maximum VoM				300	600	—	mVrms		THD = 1%, f = 1 kHz				*1
output
PB - EQ THD		THD - EQ		—	0.05	0.3	%		Vin = 0.6 mVrms, f = 1 kHz
Noise voltage level VN				—	0.7	1.5	µVrms		Rg = 680 Ω		, DIN - AUDIO
converted in input
MS sensing level		VON (1)		–36.0	–32.0	–28.0		dB		f = 5 kHz, Normal speed
		VON (2)		–18.0	–14.0	–10.0				f = 5 kHz, High speed

Rev.1, Nov. 1992, page 8 of 66

HA12173 Series

Electrical Characteristics (Ta = 25°C Dolby level 300 mVrms (Rec-out pin)) (cont)

					HA12173 VCC = 9.0 V			HA12174 VCC = 9.0 V
					HA12175 VCC = 12.0 V			HA12177 VCC = 14.0 V
Item	Symbol	Min	Typ	Max		Unit	Test Condition	Note
MS output low	VOL	—	1.0	1.5	V
level
MS output leak	IOH	—	0.0	2.0	µA
current
Control voltage	VIL	–0.2	—	1.5	V
	VIH	3.5	—	5.3

Note: 1. HA12173 VCC = 7.0 V, HA12174 VCC = 8.0 V, HA12175 VCC = 9.5 V, HA12177 VCC = 12.0 V

Rev.1, Nov. 1992, page 9 of 66

66 of 10 page 1992, .Nov 1,.Rev

5.1 k

R30

2200 p

R29

R28

R27

CircuitTest

SeriesHA12173

10 k

10 k

EQOUT (L)

PBOUT (L)

SW22

RECOUT (L)

ON

SW21

DC VM1

EQOUT(L)

SW23

SW24

OFF

RAI (L)

PBOUT(L)

L

R

SW25

EQIR (L)

R33

C21

RECOUT(L)

EQIF(L)

18 k

330 k

DC SOURCE1

R39

R34

R26

R38

R35

C20

C18

180

330 k

5.1 k

5.1 k

33 k

+

2200 p

2200 p

C29

C27

R41

R40

C25

R36

C15

C28

R25

C14

R24

+

100 µ

22 µ

680

680

C24

C23

C19

2.2 µ

4700 p

47 k

0.01 µ

330 k

0.01 µ

12 k

+

C26 +

0.1 µ

0.47 µ +

2.2 µ

+

R32

+

A GND

C13

22 µ

22 k

R31

C17

R37

C22

560

C16

0.33 µ

18 k

1 µ

+

0.1 µ

0.1 µ

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

GND

FIN

VREF

RIN

NFI

EQ

EQ

N.C.

TAI

RIP

RAI

N.C.

PB

SS1

SS2

CCR

HLS

LLS

REC

MS

FFI

NOI

MS

MA

MSI

MS

MS

V CC

(L)

(L)

(L)

(L)

OUT-M

OUT

(L)

(L)

OUT

(L)

(L)

(L)

DET

DET

OUT

VREF

GND

OUT

DET VCC

(L)

(L)

(L)

(L)

(L)

(L)

HA12173/4/5/7 (PB 1 Chip)

EQ

EQ

PB

HLS

LLS

REC

FIN

VREF

RIN

NFI

OUT-M

OUT

TAI

RAI

OUT

SSI

SS2

CCR

DET

DET

OUT

ON/

REC TAPE/ 120µ

MS

D

MS

Note : The capacitor (C29) should

GND

(R)

(R)

(R)

(R)

(R)

(R)

N.C.

(R)

BIAS

(R)

N.C.

(R)

(R)

(R)

(R)

(R)

(R)

(R)

C/B

OFF

/PB

RADIO

/70µ

F/R

GV

GND

OUT

be connected.

50

51

52

53

54

55

56

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

It's recommended to be

C32

C33

connected close to the IC.

C10

C11

+

+

22 µ

22 µ

+

0.1 µ

0.1 µ

R12

22 k

C31

R16

R17

R18

R19

R20

R21

R22

C3

R6

R13

C2

C4

22 µ

22 k

22 k

22 k

22 k

22 k

22 k

22 k

0.01 µ

18 k

C8

22 µ

560

0.1 µ

+

2.2 µ

+

+

SW7

SW6

SW5

SW4

SW3

SW2

SW1

+

+

R8

R23

C1

R1

R2

R7

R11

C12

5.1 k

C5

PB

REC

120 µ

70 µ

SER

REP

3.9 k

22 µ

680

680

12 k

18 k

2.2 µ

R9

0.47 µ

B

C OFF

ON

TAP

RAD

FOR

REV

R3

R5

C7

EQIF(R)

180

330 k

5.1 k

2200 p

SW16

L

R

EQIR (R)

C6

C9

RAI (R)

2200 p

2200 p

SW14

SW13

SW12

SW11

SW10

SW9

SW8

SW15

ON

OFF

R10

DC SOURCE2

5 V

5.1 k

SW17

MSOUT

DC SOURCE3

RECOUT(R)

PBOUT(R)

SW18

AC VM1

AUDIO SG

EQOUT(R)

D GND

				RECOUT(R)
				PBOUT(R)	R	L
				EQOUT(R)	SW19	SW20
	R14	R15
	10 k	10 k
	Unit R: Ω	NOISE METER	OSCILLO SCOPE	DISTORTION	AC VM2
	C: F			ANALYZER

Noise meter
with CCIR/ARM filter	Note
and DIN-AUDIO filter	1) Resistor tolerance are ± 1%
	2) Capacitor tolerance are ± 1%

HA12173 Series

Functional Description

Power Supply Range

HA12173 series are provided with four line output level, which will permit on optimum overload margin for power supply conditions. And this series are designed to operate on either single supply or split supply.

Table 1	Supply Voltage
Item			HA12173	HA12174	HA12175	HA12177
Single supply			7.0 V to 16.0 V	8.0 V to 16.0 V	9.5 V to 16.0 V	12.0 V to 16.0	V
Split supply		GND level	±5.0 V to 8.0 V	±5.0 V to 8.0 V	±5.0 V to 8.0 V	±6.0 V to 8.0 V
		VEE level	±3.5 V to ±8.0 V	±4.0 V to 8.0 V	±4.8 V to 8.0 V	±6.0 V to 8.0 V

A.The lower limit of supply voltage depends on the line output reference level.

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

B.In case of using digital GND terminal referring to GND level, operating voltage range varies depending on the condition at power on. On using the HA12173/174/175, use within the following ranges to avoid latch-ups.

When power on in NR-OFF mode: ±5.0 V to ±8.0 V When power on in NR-ON mode: ±5.7 V to ±8.0 V

C.In the reverse-voltage conditions such as ‘D-GND is higher than VCC’ or ‘D-GND is lower than GND’, excessive current flows into the D-GND to destory this IC. To prevent such destruction, pay

attention to the followings on using.

Single power supply : Short-circuit the D-GND and GND directory on the board mounting this IC.

Split power supply : Avoid reverse conditions of D-GND and VCC or VEE voltage, including transient-time of power ON/OFF.

Reference Voltage

For the single supply operation these devices provide the reference voltage of half the supply voltage that is the signal grounds. As the peculiarity of these devices, the capacitor for the ripple filter is very small about 1/100 compared with their usual value. The Reference voltage are provided for the left channel and the right channel separately. The block diagram is shown as figure 1.

Rev.1, Nov. 1992, page 11 of 66

HA12173 Series

22	VCC			47	VREF(L)
				+
				–	L channel
				+	reference
					52 MS VREF
				–
					Music sensor
					reference
				+	R channel
				–	reference
GND 49	50	40 RIP		52	VREF(R)
		+
		C22
		1	F

Figure 1 The Block Diagram of Reference Voltage Supply

Operating Mode Control

HA12173 series provide fully electronic switching circuits. And each operating mode control are controlled by parallel data (DC voltage).

Table 2

Threshold Voltage (VTH)

Pin No.

Low

High

Unit

Test condition

13, 14, 15, 16,

–0.2 to 1.5

3.5 to 5.3

V

Input Pin

Measure

17, 18, 19

22 k

V

Rev.1, Nov. 1992, page 12 of 66

HA12173 Series

Table 3	Switching Truth Table
Pin No.	Low	High
13	B - NR	C - NR
14	NR - OFF	NR - ON
15	PB	REC
16	TAPE	RADIO
17	120 µ (NORMAL)	70 µ (METAL or CHROME)
18	FORWARD	REVERSE
19	SER (FF or REV)	REP (NORMAL SPEED)

Notes: 1. Voltages shown above are determined by internal circuits of LSI when take pin 20 (DGND pin) as reference pin. On split supply use, same VTH can be offered by connecting DGND pin to GND pin.

This means that it can be controlled directly by microprocessor. But power supply should be over ±5 V, notwithstanding the prescription of table 1.

2. Each pins are on pulled down with 100 kΩ internal resistor.

Therefore, it will be low-level when each pins are open.

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

4.When connecting microcomputer or Logic-IC with HA12173 series directly, there is apprehension of rush-current under some transition timming of raising voltage or falling voltage at VCC ON/OFF.

On using, connect protective resistors of 10 to 22 kΩ to all the control pins. It is shown is test circuit on this data sheet. And pins fixed to low level should be preferably open.

5. Pay attention not to make digital GND voltage lower than GND voltage.

Rev.1, Nov. 1992, page 13 of 66

HA12173 Series

Input Block Diagram and Level Diagram

					HA12173: 300 mVrms (–8.2 dBs)
					HA12174: 450 mVrms (–4.7 dBs)
R34			C24		HA12175: 580 mVrms (–2.5 dBs)
					HA12177: 775 mVrms (0.0 dBs)
5.1 k	R35		0.1 µ
	5.1 k	EQ OUT	TAI	RAI	PBOUT
	R36		30 mVrms	42.4 mVrms
			(–28.2 dBs)	(–25.2 dBs)
R38	12 k	EQ OUT-M
330 k	R37
		EQ AMP		INPUT AMP
	18 k
R39
	C25	–	+	+	RECOUT
180	0.01 µ	NFI
				–	NR circuit
					300 mVrms
		RIN			(–8.2 dBs)
			0.6 mVrms
		VREF	(–62.2 dBs)
		FIN
	Unit R: Ω			The each level shown above is typical value
	C: F			when offering PBOUT level to PBOUT pin.
				(EQ AMP Gv = 40 dB f = 1 kHz)

Figure 2 Input Block Diagram

Adjustment of Playback Dolby Level

After replace R34 and R35 with a half-fix volume of 10 kΩ , adjust RECOUT level to be Dolby level with playback mode.

Note on Connecting with Tape Head to IC

This IC has no internal resistor to give the DC bias current to equalizer amp., therefore the DC bias current will give through the head. This IC provides the Vref buffer output pin for Rch and Lch separately (has two Vref terminal). In case of use that the Rch and Lch reference of head are connected commonly, please use one of Vref terminals of IC (47 pin or 52 pin) for head reference. If both 47 pin and 52 pin of IC are connected, rush current give the great damage to IC. The application circuit is shown in figure 3.

Rev.1, Nov. 1992, page 14 of 66

HA12173 Series

43

44

45

– +

46 R/F

47 VREF(L)

48

49 GND

50 GND

51

52 VREF(R)

53	R/F
54	– +
55
56

Figure 3 Application Circuit

Rev.1, Nov. 1992, page 15 of 66

HA12173 Series

The Sensitivity Adjustment of a Music Sensor

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

				C14		VCC		DVCC
		R28	R27	0.01 µ
		R26	R25		R24		+C13
					330 k		0.33 µ
	C28
	4700 p
TAI (L)	MS	FFI	NOI	MA	MSI	MS
X1	VREF			OUT		DET		I L
								R L
	L·R signal addition circuit
–6 dB	+		+			DET	MS OUT
		LPF	–					Microcomputer
	–
								D GND
	26 dB	25 kHz	MS AMP
X1					100 k			D GND
TAI (R)
							Unit	R: Ω
								C: F

Figure 4 Music Sensor Block Diagram

Rev.1, Nov. 1992, page 16 of 66

HA12173 Series

Gv1	f 1			f 2
Gv		Normal speed
[dB]
Gv2		f 3		f 4
		FF or REV
10	100	1 k	10 k	25 k	100 k
	f	[Hz]

Figure 5 Frequency Response

1. Normal mode

Gv1 =

20 log 1 +

R27

[dB]

R28

f1 =

1

[Hz], f 2 =

25 k [Hz]

π

2

C14 100 k

2. FF or REW mode

Gv2 =

+

R25

20 log 1

[dB]

R26

f3 =

1

[Hz], f4 =

25k [Hz]

π

2

C28 R26

A standard level of TAI pin is 30 mVrms and the gain for TAI to MS AMP input is 10, therefore, the other channel sensitivity of music sensor (S) is computed by the formula mentioned below.

S = 20 log	C			1		[dB]
30 10					A
A = MS AMP. gain (B dB)
S = –7.3–B [dB]					C = 130 mVrms (typ.)

S is 6 dB up in case of the both channels.

C = The sensing level of music sensor

Rev.1, Nov. 1992, page 17 of 66

HA12173 Series

Music Sensor Output (MS OUT)

As for the 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, design IL at 1 mA typ.

IL = DVCC – MSOUTLo *

R L

* MSOUTLo: Sensing signal (about 1 V)

Notes: 1. Supply voltage of MS OUT pin must be less than VCC voltage. 2. MS VCC pin and VCC pin are required the same voltage.

The Tolerances of External Components for Dolby NR-block

For adequate Dolby NR tracking response, take external components shown below.

		C21
		2200 p
	R32	±5%					C16
		C20	R31	C18		C17
	22 k
	±2%	2200 p	560	2200 p		0.1 µ	0.1 µ
		±5%	±2%	±5%		±10%	±10%
	37	36	35	34		33	32
	PB OUT	SS1	SS2	CCR		HLS	LLS
	(L)	(L)	(L)	(L)	DET (L)		DET (L)
		HA12173 Series (PB 1 Chip)
	PB OUT	SS1	SS2	CCR		HLS	LLS
BIAS	(R)	(R)	(R)	(R)	DET(R)		DET(R)
3	6	7	8	9		10	11
R11		C7	R13	C9		C10	C11
18 k	R12
±2%		2200 p	560	2200 p		0.1 µ	0.1 µ
	22 k
		±5%	±2%	±5%		±10%	±10%
	±2%	C6
							Unit	R: Ω
		2200 p
		±5%						C: F

Figure 6 Tolerances of External Components

PB Equalizer for Double Speed

PB equalizer can be design for double speed by using external components shown in figure 7. Application data is shown in figure 8.

Rev.1, Nov. 1992, page 18 of 66

HA12173 Series

	R35	No : Normal speed
	5.1 k
		Do : Double speed

	0.015	µ		22 k	* Please ajust RECOUT level to
				VR1
4.7 µ		R				be Dolby level with volume of
	No			0.1 µ		VR 1.
+		Do			+
	EQ OUT			TAI	RAI	PBOUT
	R36	EQ
R38	12 k	OUT-M
330 k	R37	EQ
R39					INPUT AMP.
	18 k	AMP.
			–	+
180	C25	NFI			+	NR	RECOUT
	0.01 µ				–	circuit
		RIN
		VREF
		FIN					Unit R: Ω
							C: F

Figure 7 Application Circuit for Double Speed

	60
	50
(dB)	40
V
G	30
					120 µ
						Normal speed
					70 µ
	20				R = 2.7 k
					R = 2.2 k
							Double speed
					R = 1.8 k
	10				R = 1.3 k
	20	100	1 k	10 k	100 k
			Frequency (Hz)		* OUTPUT = TAIpin

Figure 8 Application data

Rev.1, Nov. 1992, page 19 of 66

66 of 20 page 1992, .Nov 1,.Rev

R30

R29

10 k

10 k

EQOUT (L)

PBOUT (L)

SW22

RECOUT (L)

ON

SW21

DC VM1

EQOUT(L)

SW23

SW24

OFF

RAI (L)

PBOUT(L)

L

R

SW25

EQIR (L)

R33

C21

RECOUT(L)

5.1 k

R28

R27

2200 p

EQIF(L)

18 k

330 k

DC SOURCE1

R39

R34

R26

R38

R35

C20

C18

180

330 k

5.1 k

5.1 k

33 k

+

C29

(V

)

C27

R41

R40

2200 p

2200 p

C15

R25

C14

R24

+

100 µ

CC

C25

R36

C28

22 µ

680

680

C24

C23

C19

2.2 µ

4700 p

47 k

0.01 µ

330 k

+

C26 +

0.01 µ

12 k

0.1 µ

0.47 µ +

2.2 µ

+

R32

+

A GND

R31

C13

22 µ

22 k

C17

R37

560

C16

0.33 µ

18 k

0.1 µ

0.1 µ

+

C30

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

100 µ

GND

FIN

VREF

RIN

NFI

EQ

EQ

N.C.

TAI

RIP

RAI

N.C.

PB

SS1

SS2

CCR

HLS

LLS

REC

MS

FFI

NOI

MS

MA

MSI

MS

MS

V CC

DC SOURCE2

(L)

(L)

(L)

(L)

OUT-M

OUT

(L)

(L)

OUT

(L)

(L)

(L)

DET

DET

OUT

VREF

GND

OUT

DET

VCC

(VEE)

(L)

(L)

(L)

(L)

(L)

(L)

HA12173/4/5/7 (PB 1 Chip)

EQ

EQ

PB

HLS

LLS

REC

FIN

VREF

RIN

NFI

OUT-M

OUT

TAI

RAI

OUT

SSI

SS2

CCR

DET

DET

OUT

ON/

REC TAPE/ 120µ

MS

D

MS

Note : In case of using digital GND

GND

(R)

(R)

(R)

(R)

(R)

(R)

N.C.

(R)

BIAS

(R)

N.C.

(R)

(R)

(R)

(R)

(R)

(R)

(R)

C/B

OFF

/PB

RADIO

/70µ

F/R

GV

GND

OUT

50

51

52

53

54

55

56

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

terminal referring to VEE level,

separate

digital GND and

C32

C33

analog GND and connect

C10

C11

+

+

22 µ

22 µ

+

digital GND terminal to VEE .

R12

0.1 µ

0.1 µ

C3

R6

22 k

C31

R16

R17

R18

R19

R20

R21

R22

C2

0.01 µ

18 k

C4

R13

22 µ

22 k

22 k

22 k

22 k

22 k

22 k

22 k

22 µ

C8

560

0.1 µ

SW2

SW1

+

2.2 µ

+

+

SW7

SW6

SW5

SW4

SW3

+

+

R7

R8

R23

C1

R1

R2

R11

C12

PB

REC

120 µ

70 µ

SER

REP

12 k

5.1 k

C5

3.9 k

22 µ

680

680

18 k

2.2 µ

R9

0.47 µ

B

C OFF

ON

TAP

RAD

FOR

REV

R3

R5

C7

EQIF(R)

180

330 k

5.1 k

2200 p

SW16

L

R

EQIR (R)

C6

C9

RAI (R)

2200 p

2200 p

SW14

SW13

SW12

SW11

SW10

SW9

SW8

SW15

ON

OFF

R10

DC SOURCE2

5 V

5.1 k

SW17

MSOUT

DC SOURCE3

RECOUT(R)

PBOUT(R)

SW18

AC VM1

AUDIO SG

EQOUT(R)

D GND

RECOUT(R)

PBOUT(R)

R

L

EQOUT(R)

SW19

SW20

R14

R15

10 k

10 k

Unit

R: Ω

NOISE METER

OSCILLO SCOPE

DISTORTION

AC VM2

C: F

ANALYZER

Noise meter

with CCIR/ARM filter and DIN-AUDIO filter

HA12173	For Circuit	HA12173
	Supply Split	Series