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 func-
tions for a DVC audio analog I / O interface are provided on one chip.
•
Applications applications
Portable audio
•
Features the input amplifier, wind noise deletion fil-
1) Contains
ter, ALC, 30kHz LPF, line amplifier, stereo head-
phone amplifier, and BTL monaural speaker amplifi-
er required to configure a analog signal I / O inter-
face (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)
Parameter
Applied voltage
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
Pd
Topr
Tstg
Limits
+ 7.0
900
∗
– 10 ~ + 70
– 55 ~ + 125
Unit
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.
•
Recommended operating conditions (Ta = 25°C)
Parameter
Power supply voltage (analog system)
Power supply voltage (for SP)
Power supply voltage (digital system)
Not designed for radiation resistance.
Symbol
AVcc
SPVcc
DVcc
Limits
+ 4.0 ~ + 6.0
+ 4.0 ~ + 6.0
+ 2.7 ~ + 3.3
Unit
V
V
V
1
Multimedia ICs
BH7760KV
•
Block diagram
FADE DELAY
25
WINDC IN R
FADE CTRL
26
WINDC IN L
EXT NFB L
EXT NFB R
WINDC1 R
WINDC2 R
27
INT NFB R
WINDC1 L
WINDC2 L
30
INT NFB L
35
36
34
33
32
31
29
28
A
EXT
INT
INT MIC IN L
37
EXT
INT MIC IN R
38
INT
WIND
CUT
FADER
+ 21.3dB
AMP
24
ALC FILTER
ALC
23
A
EXT
INT
WIND
CUT
ALC
+ 21.3dB
AMP
21
REC NFB L
MIC SEL
39
22
REC NFB R
EXT MIC IN L
40
INT
REC OUT L
EXT MIC IN R
41
EXT
AMP
20
REC OUT R
LINE OUT L
42
+ 8.7dB
LPF
19
PB IN L
LINE OUT R
43
AMP
+ 8.7dB
LPF
18
PB IN R
MUTE OUT
44
HPAMP
+ 8.7dB
+
HPAMP
+ 8.7dB
SPAMP
17
DV
CC
HP OUT L
45
ATT
SERIAL
DATA
I/F
BIAS
AVCC
VREF
16
DGND
HP OUT R
46
ATT
15
DATA IN
SP OUT 1
47
14
CLK
SP OUT 2
48
SPAMP
POWER
ON / OFF
MUTE GEN
3
SP GND
4
BEEP IN
5
MIX OUT
6
MUTEGENC
7
MUTE CTRL
8
BIAS
13
CS
1
SP V
CC
2
SP ON / OFF
9
VREFC
10
AGND1
11
AGND2
12
AV
CC
2
Multimedia ICs
BH7760KV
•
Pin descriptions
Pin No.
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
Pin name
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
Function
Pin voltage
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
75kΩ
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)
Pin type
—
100kΩ PULL UP
—
B (NPN)
EF (NPN)
EF (NPN)
10kΩ
EF (NPN)
100kΩ
—
—
—
G ~ 10kΩ
G ~ 10kΩ
G ~ 10kΩ
—
—
Note: EF: Emitter follower, P-P: Push-pull, B: Base, G: gate.
3
Multimedia ICs
BH7760KV
•
Pin descriptions
Pin No.
36, 34
35, 33
37, 38
39
40, 41
42, 43
44
45, 46
47
48
Pin name
EXT NFB L / R
INT NFB L / R
Function
MIC amplifier feedback (EXT)
MIC amplifier feedback (INT)
Pin voltage
2.5V
2.5V
2.5V
5.0V
2.5V
2.5V
—
2.5V
2.5V
2.5V
Pin type
B (NPN)
B (NPN)
75kΩ
200kΩ PULL UP
75kΩ
EF (NPN)
C (NPN)
EF (NPN)
EF (NPN)
EF (NPN)
INT MIC IN L / R INT MIC input
MIC SEL
MIC SEL control input
EXT MIC IN L / R EXT MIC input
LINE OUT L / R
MUTE OUT
HP OUT L / R
SP OUT 1
SP OUT 2
LINE amplifier output
MUTE output
HP amplifier output
BTL speaker output (forward side)
BTL speaker output (reverse side)
Note: EF: Emitter follower, P-P: Push-pull, B: Base, G: gate.
•
Electrical characteristics (unless otherwise noted, AV
Parameter
[Circuit current]
Circuit current
Circuit current power save
I
CC
I
CCS
6.0
0.8
11.0
1.6
Symbol
Min.
Typ.
CC
= SPV
CC
, V
CC
= 5.0V, DV
CC
= 3.0V, Ta = 25°C)
Max.
Unit
Conditions
20.0
3.2
mA
mA
No input
No input and during power save
[MIC amplifier] INPUT: EXT MIC IN L / R, INT MIC IN L / R
Output voltage level
ALS level
V
OREC
– 21.7
– 18.7
– 6.7
OUTPUT: REC OUT L / R
– 15.7
– 2.7
dBV
dBV
V
IN
= – 70.0dBV, with MIC amplifier at 30dB
V
IN
= – 50.0dBV, with MIC amplifier at 30dB
V
ORECALC
– 10.7
[Line amplifier (during EE)] INPUT: EXT MIC IN L / R, INT MIC IN L / R
Output voltage level
Distortion
Output residual noise
Crosstalk
Maximum output level
V
OLINEEE
THD
LINEEE
V
ONLINEEE
CT
LINEEE
V
OMLINEEE
– 13.0
—
—
—
– 3.0
– 10.0
0.50
– 60.0
– 31.0
2.3
– 7.0
1.50
– 50.0
– 20.0
—
OUTPUT: LINE OUT L / R
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
V
IN
= – 60.0dBV, with MIC amplifier at 30dB
∗
1
THD = 3%,
∗
1
, with ALC OFF
[Line amplifier (during PB)] INPUT: PB IN L / R
Output voltage level
Distortion
Channel balance
Output residual noise
V
OLINEPB
THD
LINEPB
CB
LINEPB
V
ONLINEPB
– 12.0
—
– 0.5
—
OUTPUT: LINE OUT L / R
– 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
V
OLINE
L / R difference
∗
2
∗
1 B.W. = 400Hz to 30kHz
∗
2 DIN AUDIO
4
Multimedia ICs
BH7760KV
CC
•
Electrical characteristics (unless otherwise noted, AV
Parameter
Symbol
Min.
Typ.
[HP amplifier] INPUT: PB IN L / R
Output voltage level
Distortion
Maximum output level
Output residual noise
Crosstalk between channels
Muting level
[MIX OUT] INPUT: PB IN L / R
Output voltage level
V
OHP
THD
HP
V
OMHP
V
ONHP
CT
HP
MT
HP
– 12.5
—
– 3.0
—
—
—
– 10.0
0.7
– 1.2
– 91.0
– 87.0
– 100.0
= SP, V
CC
= 5.0V, DV
CC
= 3.0V, Ta = 25°C)
Max.
Unit
Conditions
OUTPUT: HP OUT L / R
– 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
R
g
= 1kΩ
∗
2
V
IN
= – 8.7dBV
∗
2
V
IN
= – 8.7dBV, V
7
= H
∗
2
OUTPUT: MIX OUT
V
OMIX
– 12.5
– 10.0
– 7.5
dBV
V
IN
= – 18.7dBV
[SP amplifier] INPUT: BEEP IN
Output voltage level
Distortion
Maximum output level
Output residual noise
SP off level
[Control mode hold voltage]
〈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
OUTPUT: SP OUT 1 / 2 (BML)
V
OSP
– 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
R
g
= 1kΩ
∗
2
V
IN
= – 6.0dBV
∗
2
THD
SP
V
OMSP
V
ONSP
V
OOFFSP
V
H14L
V
H14H
0.0
1.8
—
—
0.5
DV
CC
V
V
—
—
V
H15L
V
H15H
0.0
1.8
—
—
0.5
DV
CC
V
V
—
—
V
H16L
V
H16H
0.0
1.8
—
—
0.5
DV
CC
V
V
—
—
V
H3L
V
H3H
0.0
2.0
—
—
0.5
AV
CC
V
V
—
—
V
H7L
V
H7H
0.0
2.0
—
—
0.5
AV
CC
V
V
—
—
V
H26L
V
H26H
0.0
2.0
—
—
0.5
AV
CC
V
V
—
—
V
H39L
V
H39H
0.0
2.0
—
—
0.5
AV
CC
V
V
—
—
∗
1 B.W. = 400Hz to 30kHz
∗
2 DIN AUDIO
5
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