Datasheet BH7760KV Datasheet (ROHM)

1

Multimedia ICs

Analog signal I / O interface for
portable audio applications

BH7760KV

The BH7760KV contains the complete audio I / O analog block on a single-chip IC. Therefore, all necessary func­tions for a DVC audio analog I / O interface are provided on one chip.

•

Applications

Portable audio applications

•

Features

1) Contains the input amplifier, wind noise deletion fil­ter, ALC, 30kHz LPF, line amplifier, stereo head­phone amplifier, and BTL monaural speaker amplifi­er required to configure a analog signal I / O inter­face (audio I / O) all on one chip.

2) With the internal 3-line serial control decoder circuit,
serial control enables the setting of the various
modes for the IC.

•

Absolute maximum ratings (Ta = 25°C)

•

Recommended operating conditions (Ta = 25°C)

Parameter Symbol Limits

Unit
Applied voltage
Power dissipation
Operating temperature
Storage temperature

V

CC

Pd
Topr
Tstg

+ 7.0

– 10 ~ + 70

– 55 ~ + 125

V

mW

°C
°C

∗

Reduced by 9.0mW for each increase in Ta of 1°C over 25°C with the IC unmounted.

∗

When mounted on a 70mm × 70mm × 1.6mm glass epoxy board.

900

∗

Parameter Symbol Limits Unit
Power supply voltage (analog system)
Power supply voltage (for SP)
Power supply voltage (digital system)

AVcc

SPVcc

DVcc

+ 4.0 ~ + 6.0
+ 4.0 ~ + 6.0
+ 2.7 ~ + 3.3

V
V
V

䊊 Not designed for radiation resistance.

2

Multimedia ICs BH7760KV

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Block diagram

36 35 34 33 32 31 30 29 28 27 26 25

24

23

22

21

20

19

18

17

16

15

14

13

12

1110987654321

48

47

46

45

44

43

42

41

40

39

38

37

+

INT

INT

EXT

INT

EXT

INT

AVCC

EXT

EXT

AMP

AMP

AMP

AMP

+ 8.7dB

HPAMP
+ 8.7dB

HPAMP

SPAMP

SPAMP

+ 8.7dB

+ 8.7dB

+ 21.3dB

+ 21.3dB

ATT

LPF

ALC

ALC

LPF

ATT

VREF
POWER
ON / OFF
MUTE GEN

SERIAL

DATA

I / F

BIAS

WIND

CUT

WIND

CUT

A

A

ALC FILTER

REC NFB L

REC NFB R

REC OUT L

REC OUT R

PB IN L

PB IN R

DV

CC

DGND

DATA IN

CLK

CS

INT MIC IN L

INT MIC IN R

MIC SEL

EXT MIC IN L

EXT MIC IN R

LINE OUT L

LINE OUT R

MUTE OUT

HP OUT L

HP OUT R

SP OUT 1

SP OUT 2

EXT NFB L

INT NFB L

EXT NFB R

INT NFB R

WINDC IN L

WINDC1 L

WINDC2 L

WINDC IN R

WINDC1 R

WINDC2 R

FADE CTRL

FADE DELAY

SP V

CC

SP ON / OFF

SP GND

BEEP IN

MIX OUT

MUTEGENC

MUTE CTRL

BIAS

VREFC

AGND1

AGND2

AV

CC

FADER

3

Multimedia ICs BH7760KV

•

Pin descriptions

Pin No. Pin name Function

Pin voltage

Pin type
1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16

17
19,18
21,20
23,22

24

25

26
32,29
31,28
30,27

SP V

CC

SP ON / OFF

SP GND
BEEP IN

MIX OUT

MUTE GENC

MUTE CTRL

BIAS
VREFC
AGND1
AGND2

AV

CC

CS

CLK

DATAIN

DGND

DV

CC

PBIN L / R
REC OUT L / R
REC NFB L / R

ALC FILTER

FADE DELAY

FADE CTRL

WIND CIN L / R

WIND C1 L / R
WIND C2 L / R

Speaker V

CC

SP ON / OFF control
Speaker GND
Speaker input
HP amplifier L / R mixer output
POWER ON MUTE delay
Mute control input
Bias
V

CC / 2 reference

Analog GND1
Analog GND2
Analog V

CC

Serial control CS input
Serial control CLK input
Serial control DATE input
Serial control GND
Serial control V

CC

PB input
REC output
ALC amplifier feedback
ALC constant setting
FADE delay
FADE control input
WIND CUT FILTER input
WIND CUT FILTER constant 1
WIND CUT FILTER constant 2

5.0V

5.0V

0.0V

2.5V

2.5V

2.5V
—

2.5V

2.5V

0.0V

0.0V

5.0V
—
—
—

0.0V

3.0V

2.5V

2.5V

2.5V

0.0V
—

0.0V

2.5V

2.5V

2.5V

—
100kΩ PULL UP
—
B (NPN)
EF (NPN)
EF (NPN)
10

k

Ω

EF (NPN)
100

k

Ω

—
—
—
G ~ 10

k

Ω

G ~ 10

k

Ω

G ~ 10

k

Ω

—
—
75

k

Ω

EF (P-P)
B (NPN) ~ 3.9kΩ
EF (NPN) ~ 200Ω
B (NPN) ~ 1kΩ
B (NPN) ~ 10kΩ
EF (P-P)
EF (NPN) ~ 8.2kΩ
B (NPN)

Note: EF: Emitter follower, P-P: Push-pull, B: Base, G: gate.

4

Multimedia ICs BH7760KV

•

Pin descriptions

Pin No. Pin name Function

Pin voltage

Pin type
36, 34
35, 33
37, 38

39
40, 41
42, 43

44
45, 46

47

48

EXT NFB L / R

INT NFB L / R

INT MIC IN L / R

MIC SEL

EXT MIC IN L / R

LINE OUT L / R

MUTE OUT

HP OUT L / R

SP OUT 1
SP OUT 2

MIC amplifier feedback (EXT)
MIC amplifier feedback (INT)
INT MIC input
MIC SEL control input
EXT MIC input
LINE amplifier output
MUTE output
HP amplifier output
BTL speaker output (forward side)
BTL speaker output (reverse side)

2.5V

2.5V

2.5V

5.0V

2.5V

2.5V
—

2.5V

2.5V

2.5V

B (NPN)
B (NPN)
75kΩ
200kΩ PULL UP
75kΩ
EF (NPN)
C (NPN)
EF (NPN)
EF (NPN)
EF (NPN)

Note: EF: Emitter follower, P-P: Push-pull, B: Base, G: gate.

•

Electrical characteristics (unless otherwise noted, AVCC = SPVCC, VCC = 5.0V, DVCC = 3.0V, Ta = 25°C)

Parameter

Symbol Min. Typ. Max. Unit Conditions

Circuit current
Circuit current power save

∗

1 B.W. = 400Hz to 30kHz

∗

2 DIN AUDIO

ICC

ICCS

6.0

0.8

11.0

1.6

[Circuit current]

[MIC amplifier] INPUT: EXT MIC IN L / R, INT MIC IN L / R OUTPUT: REC OUT L / R

[Line amplifier (during EE)] INPUT: EXT MIC IN L / R, INT MIC IN L / R OUTPUT: LINE OUT L / R

[Line amplifier (during PB)] INPUT: PB IN L / R OUTPUT: LINE OUT L / R

20.0

3.2

mAmANo input

No input and during power save

Output voltage level
ALS level

V

OREC

VORECALC

– 21.7
– 10.7

– 18.7

– 6.7

– 15.7

– 2.7

dBV
dBV

VIN = – 70.0dBV, with MIC amplifier at 30dB
V

IN = – 50.0dBV, with MIC amplifier at 30dB

Output voltage level
Distortion
Output residual noise
Crosstalk
Maximum output level

V

OLINEEE

THDLINEEE

VONLINEEE

CTLINEEE

VOMLINEEE

– 13.0

—
—
—

– 3.0

– 10.0

0.50
– 60.0
– 31.0

2.3

– 7.0

1.50
– 50.0
– 20.0

—

dBV

%
dBV
dBV
dBV

V

IN = – 70.0dBV, with MIC amplifier at 30dB

V

IN = – 70.0dBV, with MIC amplifier at 30dB

∗

1

With MIC amplifier at 30dB

∗

2

VIN = – 60.0dBV, with MIC amplifier at 30dB

∗

1

THD = 3%,

∗

1

, with ALC OFF

Output voltage level
Distortion
Channel balance
Output residual noise

V

OLINEPB

THDLINEPB

CBLINEPB

VONLINEPB

– 12.0

—

– 0.5

—

– 10.0

0.017

0.0

– 90.0

– 8.0

0.20

+ 0.5

– 73.0

dBV

%

dB

dBV

V

IN = – 18.7dBV

V

IN = – 18.7dBV

∗

1

VOLINE L / R difference

∗

2

5

Multimedia ICs BH7760KV

•

Electrical characteristics (unless otherwise noted, AVCC = SP, VCC = 5.0V, DVCC = 3.0V, Ta = 25°C)

Parameter

Symbol Min. Typ. Max. Unit Conditions

Output voltage level
Distortion
Maximum output level
Output residual noise
Crosstalk between channels
Muting level

∗

1 B.W. = 400Hz to 30kHz

∗

2 DIN AUDIO

VOHP

THDHP

VOMHP
VONHP

CTHP
MTHP

– 12.5

—

– 3.0

—
—
—

– 10.0

0.7

– 1.2
– 91.0
– 87.0

– 100.0

[HP amplifier] INPUT: PB IN L / R OUTPUT: HP OUT L / R

[MIX OUT] INPUT: PB IN L / R OUTPUT: MIX OUT

[SP amplifier] INPUT: BEEP IN OUTPUT: SP OUT 1 / 2 (BML)

– 7.5

2.0
—

– 73.0
– 70.0
– 83.0

dBV

%
dBV
dBV
dBV
dBV

V

IN = – 18.7dBV

V

IN = – 18.7dBV

∗

1

THD = 3%

∗

1

Rg = 1kΩ

∗

2

VIN = – 8.7dBV

∗

2

VIN = – 8.7dBV, V7 = H

∗

2

Output voltage level
Distortion
Maximum output level
Output residual noise
SP off level

V

OSP

THDSP

VOMSP
VONSP

VOOFFSP

– 4.5

—

+ 3.0

—
—

– 1.0

0.8

+ 4.8
– 95.0
– 65.0

+ 2.5

2.0
—

– 80.0
– 55.0

dBV

%
dBV
dBV
dBV

V

IN = – 10.0dBV

V

IN = – 10.0dBV

∗

1

THD = 10%

∗

1

Rg = 1kΩ

∗

2

VIN = – 6.0dBV

∗

2

Output voltage level VOMIX – 12.5 – 10.0 – 7.5 dBV VIN = – 18.7dBV

〈CS〉
Low mode hold voltage
High mode hold voltage
〈CLK〉
Low mode hold voltage
High mode hold voltage
〈DATA IN〉
Low mode hold voltage
High mode hold voltage
〈SP ON / OFF〉
SP off hold voltage
SP on hold voltage
〈MUTE control〉
MUTE hold voltage
MUTE hold voltage
〈FADE control〉
FADE off hold voltage
FADE on hold voltage
〈MIC SEL〉
EXT hold voltage
INT hold voltage

V

H14L

VH14H

VH15L
VH15H

VH16L
VH16H

VH3L

VH3H

VH7L

VH7H

VH26L
VH26H

VH39L
VH39H

0.0

1.8

0.0

1.8

0.0

1.8

0.0

2.0

0.0

2.0

0.0

2.0

0.0

2.0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

[Control mode hold voltage]

0.5

DV

CC

0.5

DV

CC

0.5

DV

CC

0.5

AV

CC

0.5

AV

CC

0.5

AV

CC

0.5

AV

CC

V
V

V
V

V
V

V
V

V
V

V
V

V
V

6

Multimedia ICs BH7760KV

36 35 34 33 32 31 30 29 28 27 26 25

24

23

22

21

20

19

18

17

16

15

14

13

12

1110987654321

48

47

46

45

44

43

42

41

40

39

38

37

+

INT

INT

EXT

INT

EXT

INT

AVCC

EXT

EXT

AMP

AMP

AMP

AMP

+ 8.7dB

HPAMP
+ 8.7dB

HPAMP

SPAMP

SPAMP

+ 8.7dB

+ 8.7dB

+ 21.3dB

+ 21.3dB

ATT

LPF

ALC

ALC

LPF

ATT

VREF
POWER
ON / OFF
MUTE GEN

SERIAL

DATA

I / F

BIAS

WIND

CUT

WIND

CUT

A

A

INT MIC IN L

INT MIC IN R

EXT MIC IN L

EXT MIC IN R

LINE OUT L

LINE OUT R

HP OUT L

HP OUT R

SP OUT 1

SP OUT 2

+++

+

1µ

100µ

22k

22k

1k

1k

+

1µ

1k

+

1µ

1k

+

1µ

1k

+

1µ

1k

+

1µ

22k

+

1µ

22k

+

47µ

100

+

47µ

8

100

+

1µ

+

1µ

+

1µ

REC OUT L

REC OUT R

PB IN L

PB IN R

DV

CC

DGND

DATA IN

CLK

CS

2.2M

4.7µ

22µ

+

10µ

22µ

+ +

+

+

+

+

SP VCC

SP ON / OFF

AGND1

AGND2

AV

CC

MUTE CTRL

SP GND

15k1k

22k

0.47µ

0.47µ

BEEP IN

MIX OUT

10µ

100µ 100µ

100µ

10µ

BIAS

MIC SEL

MUTE OUT

1k

0.047µ 0.047µ

0.047µ 0.047µ

33k

33k

1k 1k 1k

33k

33k

BIAS

FADE CTRL

FADER

Fig.1

•

Measurement circuit

7

Multimedia ICs BH7760KV

1

0.1

1.4 ± 0.1

48

0.5

36

9.0 ± 0.3

7.0 ± 0.2

37

9.0 ± 0.3

7.0 ± 0.2

0.2 ± 0.1

12

13

0.125 ± 0.1

0.5

25

24

0.1

VQFP48C

•

External dimensions (Units: mm)