HIT HA12215F Datasheet

HA12215F

Audio Signal Processor for Cassette Deck

(Dolby B-type NR with Recording System)

ADE-207-253D (Z)

Target Specification

5th Edition

Oct. 1999

Description

HA12215F is silicon monolithic bipolar IC providing Dolby noise reduction system*1, music sensor system, REC equalizer system and each electronic control switch in one chip.

Note: 1. Dolby is a trademark of Dolby Laboratories Licensing Corporation.

A license from Dolby Laboratories Licensing Co r por ation is required for the use of this IC.

Functions

• Dolby B-NR × 2 channel

• REC equalizer × 2 channel

• Music sensor × 1 channel

• Pass amp. × 2 channel

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

Features

• REC equalizer is very small number of external parts and have 6 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 / OF F and REC / PB fully electronic control switch ing built-in.

• Normal-speed / high-speed, Normal / Crom / Metal and PB equalizer fully electronic control switching

built-in.

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

HA12215F

Ordering Information

Operating Voltage

Product VCC (V) VEE (V) Note

HA12215F +6.0 to +7.5 –7.5 to –6.0 | V

Standard Level

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

HA12215F FP-56 580 mVrms 300 mVrms 300 mVrms

Function

+ VEE | < 1.0 V

CC

Music

Product Dolby B-NR REC-EQ

HA12215F ❍❍❍❍❍❍ 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 built-in resistor is necessary.

Sensor Pass Amp.

REC / PB Selection ALC

Rev.5, Oct. 1999, page 2 of 69

HA12215F

Pin Description, Equivalent Circuit (VCC = ±7 V, A system of split supply voltage,

Ta = 25°C, No Signal, The value in the show typical value.)

Pin No. Terminal Name Note Equivalent Circuit Pin Description

51 AIN (R) V = GND

V

100k

GND

48 AIN (L) 53 BIN (R) V = GND PB B Deck input 46 BIN (L) 56 RIN (R) V = GND REC input 43 RIN (L) 5 EQIN (R) V = GND REC equalizer input 38 EQIN (L) 1DET (R) V = V

+2.7V

EE

V

PB A Deck input

Time constant pin for

CC

Dolby-NR

42 DET (L) 2 BIAS1 V = VEE+0.6V

41 BIAS2 V = VEE+1.3V

V

EE

Dolby bias current input

V

EE

REC equalizer bias current input

V

EE

Rev.5, Oct. 1999, page 3 of 69

HA12215F

Pin Description, Equivalent Circuit (VCC = ±7 V, A system of split supply voltage,

Ta = 25°C, No Signal, The value in the show typical value.) (cont)

Pin No. Terminal Name Note Equivalent Circuit Pin Description

3 PBOUT (R) V = GND

V

CC

V

EE

40 PBOUT (L) 4 RECOUT (R) V = GND REC output 39 RECOUT (L) 7 EQOUT (R) V = GND REC equalizer output 36 EQOUT (L) 28 MAOUT V = GND MS Amp. output * 8 ROUT (R) V = GND Input Amp. output 35 ROUT (L) 52 ABO (R) R1 = 15 k

R2 = 12 k

PB output

Time constant pin for

V

CC

PB equalizer (70µ)

1

47 ABO (L) 6 BOOST (R) R1 = 4.8 k

R2 = 4.8 k 37 BOOST (L) 31 BIAS (M) V = VCC – 0.7V

32 BIAS (C) 33 BIAS (N) Note: 1. MS: Music Sensor

V

R2R1

V

EE

Time constant pin for low boost

V

CC

REC bias current output

V

Rev.5, Oct. 1999, page 4 of 69

HA12215F

Pin Description, Equivalent Circuit (VCC = ±7 V, A system of split supply voltage,

Ta = 25°C, No Signal, The value in the show typical value.) (cont)

Pin No. Terminal Name Note Equivalent Circuit Pin Description

21 V

CC

V = V

CC

49 GND V = 0V GND pin 50 V

EE

V = V

EE

45, 54 NC No connection No connection 15 ALC ON/OFF I = 50 µA

V

I

22 k

100 k

GND

16 PB A/B 17 A 120/70 18 NORM/HIGH 19 B NORM/CROM/

METAL 20 BIAS ON/OFF 22 RM ON/OFF 23 NR ON/OFF 25 LM ON/OFF 24 REC/PB/PASS

2.5 V

+

−

Power supply

Negative power supply

Mode control input

26 MSOUT I = 0 µA

Note: 1. MS: Music Sensor

100 k

22 k

V

CC

I

MSGND

V

EE

MS output (to MPU) *

1

Rev.5, Oct. 1999, page 5 of 69

HA12215F

Pin Description, Equivalent Circuit (VCC = ±7 V, A system of split supply voltage,

Ta = 25°C, No Signal, The value in the show typical value.) (cont)

Pin No. Terminal Name Note Equivalent Circuit Pin Description

10 GPCAL R = 110 kΩ

R

2.5 V

11 RECCAL R = 110 kΩ REC gain calibration

12 ALCCAL R = 140 kΩ ALC operation level

14 MSDET n = 6

0 µA

V

CC

n

V

EE

13 ALCDET n = 2 27 MSIN R = 50 kΩ

V

CC

GP gain calibration terminal

terminal

calibration terminal Time constant pin for

1

MS *

MS input *

1

9 ALCIN (R) R = 100 kΩ 34 ALCIN (L) 30 MAI V = GND

29 MS GND I = ±100 µA

55 ALC (R) V = GND

44 ALC (L) Note: 1. MS: Music Sensor

V

R

GND

MAOUT

V

CC

MS Amp. input *

1

100 k

V

8.2 k GND

MS output voltage level control pin *

I

1

Variable impedance

V

for attenuation

Rev.5, Oct. 1999, page 6 of 69

Block Diagram

DET (L)

BIAS2

42 41 39 38 37 36 35 34 33 32 31 30 2940

PBOUT (L)

RECOUT (L)

EQIN (L)

BOOST (L)

EQOUT (L)

ROUT (L)

ALCIN (L)

BIAS (N)

BIAS (C)

BIAS (M)

MAI

HA12215F

MSGND

RIN (L)

ALC (L)

BIN (L)

ABO (L)

AIN (L)

GND

V

AIN (R)

ABO (R)

BIN (R)

ALC (R)

RIN (R)

43 44 45NC 46 47 48 49

EE

50 51 52 53 54NC 55 56

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

BIAS1

DET (R)

PBOUT (R)

EQ

Dolby B-NR

EQ

EQIN (R)

RECOUT (R)

BOOST (R)

+

LPF

EQOUT (R)

ROUT (R)

BIAS

GPCAL

ALCIN (R)

−

+

ALC

ALCCAL

RECCAL

MS

MSDET

ALCDET

28

MAOUT

27

MSIN

26

MSOUT

25

LM ON / OFF

24

REC / PB / PASS

23

NR ON / OFF

22

RM ON / OFF

21

V

CC

20

BIAS ON / OFF B NORM / CROM / METAL

19

NORM / HIGH

18 17

A 120 / 70

16

PB A / B

15

ALC ON / OFF

Rev.5, Oct. 1999, page 7 of 69

HA12215F

Parallel-Data Format

MODE

Pin No. Pin Name Lo Mid Hi

15 ALC ON/OFF ALC ON — ALC OFF Lo 16 PB A/B Ain *

1

—Bin *1Lo 17 A 120/70 *1 — *1 Lo 22 RM ON/OFF REC MUTE ON — REC MUTE OFF Lo 20 BIAS ON/OFF BIAS OFF — BIAS ON Lo 23 NR ON/OFF NR OFF — NR ON Lo 24 REC/PB/PASS REC MODE PB MODE REC MODE PASS Mid 25 LM ON/OFF LINE MUTE OFF — LINE MUTE ON Lo 18 NORM/HIGH Normal speed — High speed Lo 19 B NORM/CROM/

METAL

REC EQ Normal * Bias Normal

1

REC EQ CROM *

Bias CROM

1

REC EQ METAL * Bias METAL

Note: 1. PB EQ logic

PB EQ Logic

“Pin Open”

1

Lo

PB

A 120

120/70 B NORM

120120

NORM / CROM / METAL Lo Hi

NORM NORM

Lo Lo FLAT FLAT Lo Hi or Mid FLAT 70 µ Hi Lo 70 µ FLAT Hi Hi or Mid 70 µ 70 µ

Rev.5, Oct. 1999, page 8 of 69

HA12215F

Functional Description

Power Supply Range

HA12215F is designed to operate on split supply.

Table 1 Supply Voltage

Product VCC (V) VEE (V) Note

HA12215F +6.0 to +7.5 –7.5 to –6.0 | V Note: 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.

Reference Voltage

The reference voltage are provided for the left channel and the right channel separately. The block diagram is shown as figure 1.

+ VEE | < 1.0 V

CC

21

V

49

50

CC

GND

V

EE

V

CC

V

EE

+

−

L channel reference

+

−

Music sensor reference

+

−

R channel reference

Figure 1 Reference Voltage

Rev.5, Oct. 1999, page 9 of 69

HA12215F

Operating Mode Control

HA12215F provide fully electronic switching circuits. And each operating mode control is controlled by parallel data (DC voltage).

Table 2 Control Voltage

Pin No. Lo Mid Hi Unit Test Condition

15, 16, 17, 18, 20, 22, 23, 25

–0.2 to 1.0 — 4.0 to V

CC

V

Input Pin Measure

19, 24 –0.2 to 1.0 2.0 to 3.0 4.0 to V

CC

Notes: 1. Each pins are on pulled down with 100 kΩ inter nal resi stor.

Therefore, it will be low-level when each pins are open. But pin 24 is mid-level when it is open.

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

3. For reduction of pop noise, connect 1 µF to 22 µF 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

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

AIN

BIN

25.9mVrms

21.3dB

300mVrms

4700pF

R3

12k

C2

FLAT

(120µ)

70µs

R4 15k

25.5mVrms

200mVrms

MS REF

300mVrms

PB/REC, PASS=0dB/21.4dB

0dB

PB

REC PASS

C1

0.1µF R1

15k

RIN

R2

2.2k

PASS

300mVrms

0.1µF

V

Dolby B-NR

ALC

C3

REC PB

PASS/REC, PB=5.7dB/5.7dB

300mVrms

,

CC

PBOUT 580mVrms

RECOUT 300mVrms

Rev.5, Oct. 1999, page 10 of 69

Figure 2 Input Block Diagram

HA12215F

PB Equalizer

By switching logical input level of pin 17 (for Ain) and pin 19 (for Bin), you can equalize corresponding to tape position at play back mode.

With the capacity C2 capacitance that we showed for figure 2 70 µs by the way figure seem to 3 they are decided.

G

V

t1 = C2 ⋅ (12k + 15k) t2 = C2 ⋅ 15k

t1 t2

Figure 3 Frequency Characteristic of PB Equalizer

The Sensitivity Adjustment o f Music Sensor

f

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

REP

V

CC

DET

MS DET

+

C13

0.33µ

MS OUT

GND

PB (L)

−6dB

PB (R)

8.2k

LPF

25kHz

MAI

100k

−

+

MS AMP

C16

1000p

MA OUT

R13

330k

MSIN

50k

Figure 4 Music Sensor Block Diagram

D V

CC

R

L

Microcomputer

GND

Rev.5, Oct. 1999, page 11 of 69

HA12215F

The Sensitivity of Music Sensor

A standard level of MS input pin 25.9 mVrms, therefore, the sensitivity of music sensor (S) can request it, by lower formulas.

A = MS Amp Gain* B = PB input Gain × (1/2)* C = Sensed voltage 20log (A × B) = D [dB] C = 130 [mVrms] (Intenally voltage in a standard) PB input Gain = 21.3 [dB]

Notes: 1. When there is not a regulation outside.

2. Case of one-sided channel input.

But necessary to consider the same attenuation quantity practically, on account of A(B) h ave made frequency response.

37.7dB

1

2

S = 20log S = 14 − D [dB]

G

V

C

25.9 ⋅ A ⋅ B

[dB]

f1 = f2 = 25k [Hz]

f

f1 f2

1

2π ⋅ C16 ⋅ 50k

[Hz]

Figure 5 Frequency Characteristic of MSIN

Occasion of the external component of figure 4, f1 is 3.18 kHz.

Time constant of detection

Figure 6(1) generally shows that detection time is in proportion to value of capacitor C13. But, with Attack*

2

and Recovery*3 the detection time differs exceptionally.

Notes 2. Attack : Non- music to Music

3. Recovery : Music to Non-music

Recovery

Attack

Detection time

C13

(1) (2) (3)

Recovery Recovery

Attack Attack

Detection time

R13

Detection level

Detection time

Input level

Figure 6 Function Characteristic of MS

Like the figure 6(2), Recovery time is variably possible by value of resistor R13. 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.

Rev.5, Oct. 1999, page 12 of 69

HA12215F

Music Sensor Output (MSOUT)

As for internal circuit of music sensor block, music sensor output 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 (R

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

voltage.

CC

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 C5 and C23.

V

EE

C23

0.1µ ±10%

42

DET (L)

HA12215F

= 10 kΩ to 22 kΩ)

L

DET (R)

C5

0.1µ

±10%

BIAS1

1

2

R5 33k ±2%

V

EE

Figure 7 Tolerance of External Components

Low-Boost

EQIN

24.6dB

4.8k

BOOST

+

C9(C19)

0.47µ

REC EQ

EQOUT

Figure 8 Example of Low Boost Circuit

External components shown figure 8 gives frequency response to take 6 dB boost. And cut off frequency can request it, by C9 (C19).

Rev.5, Oct. 1999, page 13 of 69

HA12215F

REC Equalizer

The outlines of REC Equalizing frequency characteristics are sh own by figure 9. Those peak level can be set up by supplying voltage. (0 V to 5 V, GND = 0 V) to pin 10 (GPCAL).

And whole band gain can be set up by supplying voltage (0 V to 5 V, GND = 0 V) to pin 11 (RECCAL).

Both setting up range are ±4.5 dB. In case that you do not need setting up, pin 10, pin 11 should be open bias.

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 care, please inquire the responsible agent because of the adjustment of built-in resistor is necessary.

RECCAL GPCAL

Gain (dB)

Frequency (Hz)

Figure 9 Frequency Characteristics of REC Equalizer

Bias Switch

HA12215F built-in DC voltage generator for bias oscillator and its bias switches.

External resistor R19, R20, R21 which corresponded with tape positions and bias out voltage are relater with below.

.

Vbias = × (VCC − VEE − 0.7) + VEE [V]

.

(R19 or R20 or R21) + R22

R22

Bias switch follows to a logic of pin 19 (B / Norm / Crom / Metal).

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

Rev.5, Oct. 1999, page 14 of 69

HA12215F

BIAS (N)

Pin 33

BIAS (C)

Pin 32

BIAS (M)

Pin 31

R21

R20

R19

R22

V

Vbias

EE

Figure 10 External Components of Bias Block

Automatic Level Control

ALC is the input decay rate variable system. It has internal variable resistors of pin 55 (pin 44) by RECOUT signal that is inputted to p in 9 (pin 34 ) .

The operation is similitude to MS, detected by pin 13.

The signal input pin is pin 56 (pin 43). Resistor R1, R2 and capacitor C2, external components, for the input circuit are commended as figure 12. There are requested to use value of the block diagram figure for performance maintenance of S/N, T.H.D. etc.

Figure 11 shows the relation with R1 front RIN point and ROUT.

ALC operation level acts for the center of +4.5 dB at tape position TYPE I, IV and the center of +2.5 dB at tape position TYPE II, to standard level (300 mVrms).

Then, adopted maximum value circuit, ALC is operated by a large channel of a signal.

ALC ON/OFF can switch it by pin 15. Please do ALC ON, after it does for one time ALC OFF inevitably, for ALC time to start usefully (when switching PB → PASS, when switching PB → PASS), in order to reset ALC circuit.

TYPE I, IV

4.5dB

RIN

300mV

ROUT

TYPE II

2.5dB

Figure 11 ALC Operation Level

Rev.5, Oct. 1999, page 15 of 69

HA12215F

R1

15k

RIN ROUT

25.5mV 21.4dB

C2

0.1µ R2

2.2k

56

55

ALC

8 OutputInput

9

13

300mV

C4

ALCIN

ALCDET

R12

C12

V

+

CC

Figure 12 ALC Block Diagram

ALC Operation Level Necessary

ALC operation level is variable to pin 12 bias (ALC-CAL: 0 to 5 V), and its range is ±4.0 dB.

Unnecessary, pin 12 is unforced.

ALC-CAL = 5V

ALC-CAL = 0V

ROUT

RIN

Figure 13 ALC-CAL Characteristics

Rev.5, Oct. 1999, page 16 of 69

HA12215F

Absolute Maximum Ratings

Item Symbol Rating Unit Note

Max supply voltage V Power dissipation Pd 625 mW Ta ≤ 75°C Operating temperature Topr –40 to +75 °C Storage temperature Tstg –55 to +125 °C

max 16 V

CC

Rev.5, Oct. 1999, page 17 of 69

HA12215F

Electrical Characteristics

Remark



Input Output

COM L

R L

R

Unit

Max Typ

Min



404039 334

 

48/46



51/53 dB

mA

28.5

35.0



27.0



25.5

43

56

28.0

26.5

25.0



393939 444

43

434343

56

565656

dB

5.8

10.0

4.3

8.5

2.8

7.0

= ±7 V, Dolby Level = REC-OUT Level = 300 mVrms = 0 dB)

CC

Other

No signal

(Ta = 25°C, V



RECOUT

level (dB)



fin

(Hz)

0

1k1k2k

−20

−30

2k5k5k



3939394040 4

434343

565656

dB 2



4.7

9.7

3.2

8.2

13.0

1.7

6.7

12.0

THD=1%



−20

−30

1k





4

433

dB%dB



0.3

70.0

0.05

64.070.0

Rg=5.1kΩ,

CCIR/ARM

0



1k

1k1k1k1k1k



40 3

48/464348/46

51/535651/53

dB



80.0

85.0

80.0

70.0

+12



340

48/43

51/56



80.0

70.0

+12



40 3

48/46

51/53 dB

28.5

27.0

25.5 PB

V

G

−

PA

V

G 0

1k



40 3

48/46

51/53 dB

1.0

0.0

−1.0

0

1k



404040 333

48

48/46

51

51/53

dB



27.0

80.0

25.5

70.0

24.0

0

+12

1k

48/46

51/53

23.8

22.3

20.8

0

10k

 3



48

51

51 V

dB

1.5

−18.0

1.0

−22.0 

−26.0





5k



µA

2.0



39 4

43

56

dB

7.0

4.5

2.0

+12

1k



39 4

43

56

5.0

2.5

0.0

+12

1k

B

N/C/M

NORM

Test Condition Application Terminal

1

IC Condition *

OFF

LINE

MUTE

120

120 OFF

70µ

120µ/

A

A/B

PB

/PASS

REC/PB

NR

OFFQuiescent current

OFF

ON/OFF

PB

Q

G

I

V

Item Symbol

Input AMP. gain

NORM

OFF

120

A

REC

ON

OFF

REC

V

G

ENC 2k (1)

B-type

Encode boost

NORM

OFF

120

AAA

REC

ON

ENC 2k (2)

ENC 5k (1)

ENC 5k (2)

NORM

OFF

120

A

A/BAA/B

REC

RECPBREC

ONONON

Vo max

Signal handling

OFF

S/N

THD

CTRL (1)

Signal to noise ratio

Total Harmonic Distortion

Channel separation

NORM

OFF

120

PB

OFF

CTRL (2)

CT A/B

Crosstalk

NORM

OFF

120

A

REC/PB

OFF

CT R/P

ON

OFF

120

A

A/B

PBPBPBPBPB

PASS

OFF

V

PA

V

∆G

G

MUTE

Pass AMP. gain

Gain deviation

MUTE ATT.

CROM

NORM/

NORM

OFF

70

120

AAA

A/B

OFF

EQ 1k

EQ 10k

V

ONVOL

G

V

G

70µ EQ gain

MS sensing level

NORM,

METAL

NORM

OFF

120

PB

OFF

OH

I

OFFALC (2) REC A 120 OFF CROM

OFF

= ±6.0 V

2. V

MS output low level

MS output leak current

ALC operate level OFFALC (1) REC A 120 OFF

Notes: 1. Other IC-condition : REC-MUTE OFF, Normal tape, Normal speed, Bias OFF

CC

3. For inputting signal to one side channel

Rev.5, Oct. 1999, page 18 of 69

Electrical Characteristics (cont)

HA12215F

= ±7 V)

CC

(Ta = 25°C, V

Remark

COM L

R L

Application Terminal

Input Output

R

Unit

Max Typ

Min



36 7

38 5

538736

dB



58

12.5

55

10.5

SW22 (L), SW23 (R) OFF



0.5



538736

%

0.5

0.2



SW22 (L), SW23 (R) OFF

538736

%

mV

500

21.8

0

20.3

 0.2

18.8

−500

SW22 (L), SW23 (R) OFF



538736

dBdBdB

27.9

25.9

23.9

SW22 (L), SW23 (R) OFF

538736

35.1

32.6

30.1

SW22 (L), SW23 (R) OFF

538736

dBdBdBdBdBdBdB

26.3

32.5

39.0

24.8

30.5

36.5

23.3

28.5

34.0

SW22 (L), SW23 (R) OFF



538736

27.1

29.9

33.3

25.6

27.9

30.8

24.1

25.9

28.3

SW22 (L), SW23 (R) OFF



538736

18.0

16.5

15.0

SW22 (L), SW23 (R) OFF



538736

dB

23.9

28.4

22.9

21.9

25.9

21.4

19.9

23.4

19.9

SW22 (L), SW23 (R) OFF

538736

dBdBdB

27.7

25.7

23.7

SW22 (L), SW23 (R) OFF

538736

31.9

24.4

29.4

22.9

26.9

21.4

SW22 (L), SW23 (R) OFF



538736

dBdBdB



26.0

28.5 70

24.0

26.0 60

22.0

23.5

SW22 (L), SW23 (R) OFF

Test Condition

f = 1kHz, THD = 1%,

Rg = 5.1kΩ, A-WTG Filter

(0dB = −5dBs at EQOUT)

NORM

TAPE SPEED

NORM

NORMEqualizer S/N

Vin max (EQ)

S/N (EQ)

Item Symbol

Equalizer maximum input

Vin = −26dBs = 0dB

f = 1kHz, Vin = −26dBs

NORM

T.H.D.1 (EQ)

Equalizer total harmonic

f = 3kHz, Vin = −46dBs

No-Signal

f = 1kHz, Vin = −30dBs

T.H.D.2 (EQ)

distortion

f = 8kHz, Vin = −46dBs

NORM

NORMG

VEQ-NN1GVEQ-NN2GVEQ-NN3

Vofs (EQ)

Equalizer offset voltage

Equalizer

frequency response

(NORM - NORM)

f = 3kHz, Vin = −46dBs

f = 12kHz, Vin = −46dBs

CROM NORM

VEQ-CN1GVEQ-CN2GVEQ-CN3GVEQ-MN1GVEQ-MN2GVEQ-MN3GVEQ-NH1

G

Equalizer

f = 3kHz, Vin = −46dBs

f = 8kHz, Vin = −46dBs

f = 12kHz, Vin = −46dBs

f = 8kHz, Vin = −46dBs

f = 12kHz, Vin = −46dBs

METAL NORM

frequency response

(CROM - NORM)

Equalizer

frequency response

(METAL - NORM)

f = 5kHz, Vin = −46dBs

NORM HIGH

Equalizer

f = 5kHz, Vin = −46dBs

f = 15kHz, Vin = −46dBs

f = 20kHz, Vin = −46dBs

f = 15kHz, Vin = −46dBs

CROM HIGH

VEQ-NH2GVEQ-NH3

VEQ-CH1GVEQ-CH2GVEQ-CH3GVEQ-MH1GVEQ-MH2GVEQ-MH3

G

Equalizer

frequency Response

frequency response

(NORM - High)

(CROM - High)

f = 5kHz, Vin = −46dBs

f = 20kHz, Vin = −46dBs

f = 15kHz, Vin = −46dBs

f = 20kHz, Vin = −46dBs

METAL HIGH

Equalizer

frequency response

(METAL - High)

f = 1kHz, Vin = −14dBs

REC-MUTE attenuation NORMREC-MUTE NORM

Rev.5, Oct. 1999, page 19 of 69

HA12215F

Electrical Characteristics (cont)

= ±7 V)

CC

Remark

(Ta = 25°C, V

Application Terminal

Input Output

Unit

Min Typ R L R L COMMax





363636

36

777

7

383838

38

555

5

dBdBdB

dB

6.0

−3.0

4.5

−4.5

3.0

−6.0

= 0dB

V EQ-NN1

= 0V

= 5V G

REC-CAL

V

6.0

−3.0

4.5

−4.5

3.0

−6.0

= 0dB

V EQ-NN3

G

= 0V

= 5V

GP-CAL

V



39 4

43

56

dB

−3.0

−4.0

ALC (1) = 0dB 



39 4

43

56

dB



4.0

3.0

31 to 33



 



V



−0.7

CC

V

−1.4

CC

V

31 to 33

15 to 20





 





V

EE

+0.1

1.0

V

EE



V

EE

−0.1

−0.2

V

15 to 20

22 to 25

19, 24



V

3.0



2.0

22 to 25



V

5.3



4.0

Test Condition

Vin = −46dBs,

f = 3kHz,

f = 3kHz, Vin = −46dBs,

NORM

TAPE SPEED

NORM

R-CAL1

R-CAL2

Item Symbol

REC CAL response

= 0V

= 5V

ALC-CAL

V

Vin = −46dBs,

V

f = 1kHz,

f = 12kHz,

NORM

GP-CAL1

GP CAL response

f = 1kHz,

f = 12kHz,

NORM

= 2.4kΩ + 270Ω

L

R

NORM

ALC-CAL1

ALC-CAL2

GP-CAL2

Bias on

Bias out maximum level

ALC CAL response

= 2.4kΩ + 270Ω

L

R

ILVIMVIH

Bias off

Bias out offset

Control voltage V

Rev.5, Oct. 1999, page 20 of 69

Test Circuit

SW20

Lch

AC VM2

Distortion

Rch

Oscillo

analyzer

scope

Noise

meter

noise meter

with ccir/arm filter

and a-wtg filter

HA12215F

Lch

DC VM1

SW20

Rch

BIAS

EQPB

SW7

EQPB

SW5

REC

JP2

10k

DC +5V

DC +2.5V

SOURCE3

SOURCE4

R18

3.9k

MAOUT

C16

1000p

DC VM2

MSOUT

MSIN

ON

PB

OFF LM ON / OFF

PASS

REC REC / PB / PASS

SW18

SW17

ON

OFF NR ON / OFF

R17

22k

OFF

SW16

R16

22k

++

C15

22µ

282726172520242322

ON RM ON / OFF

SW15

C14

22µ

CC

V

21

R15

ON

R14

B NORM / CROM / METAL

C

OFF BIAS ON / OFF

H

M

N

SW14

SW13

19

18

10k

N NORM / HIGH

70

120 A 120 / 70

SW12

SW11

OFF

ON ALC ON / OFF

A

B PB A / B

SW9

SW10

16

15

MSDET

MS

56

RIN (R)

EQ

ALCDET

ALCCAL

RECCAL

GPCAL

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

C4

0.1µ

R4

13k

−

C26

0.0047µ

+

AIN (L)

+

ALC

LPF

+

B-NR

Dolby

50

52

+

EE

V

C27

0.47µ

10k

R33

Rch

Lch

SW2 ON

SW1

SG

Audio

OFF

C1

0.47µ

AIN (R)

R1

AC VM1

C2

0.0047µ

BIN (R)

10k

55

53

ALC (R)

+

R3

2.2k

C3

0.47µ

R2

10k

B

R

EQ

A

SW4

R19

270

C

R20

910

BIAS

R21

2k

2.4k

C17

0.47µ

SW21

R22

M

N

ALCIN (L)

ROUT (L)

+

C18

2.2µ

ON

OFF

+

µ

R24

5.1k

C19

0.47

R27

20k

R26

7.5k

16k

R25

C21

10k

R28

C22

22k

R29

EQ

22

SW

JP3

+

µ

C20

0.47

2.2µ

+ +

2.2µ

42 41 39 38 37 36 35 34 33 32 31 30 2940

C23

0.1µ

RIN (L)

13k

R30

43

C24

0.1µ

C29

100µ

+

DC −7V

SOURCE2

B-NR

Dolby

44

45544651474849

+

C25

0.47µ

R31

2.2k

BIN (L)

10k

R32

R

B

A

EQ

SW3

DC +7V

SOURCE1 +

C28

100µ

C13

0.33µ

+

R13

330k

+

C12

10µ

1M

R12

ALCIN (R)

C11

0.47µ

ROUT (R)

+

C10

ON

OFF

+

23

SW

JP1

+

µ

0.47

C8

+

R9

C7

2.2µ

+

R6

C6

2.2µ

R5

33k

C5

0.1µ

10k

REC

R11

2.2µ

µ

C9

R10

5.1k

0.47 R7

20k

R8

7.5k

16k

10k

REC

EQ EQPBPB

SW8

SW6

2. Capacitor tolerance are ±1%.

3. Unit R: Ω, C: F.

Notes: 1. Resistor tolerance are ±1%.

Rev.5, Oct. 1999, page 21 of 69

HIT HA12215F Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual

Operating Voltage

Parallel-Data Format

PB EQ Logic

Power Supply Range

Reference Voltage

Operating Mode Control

Input Block Diagram and Lev e l Diagram

PB Equalizer

The Sensitivity Adjustment o f Music Sensor

The Sensitivity of Music Sensor

Time constant of detection

Music Sensor Output (MSOUT)

The Tolerances of External Components

Low-Boost

REC Equalizer

Bias Switch

Automatic Level Control

ALC Operation Level Necessary

Test Circuit