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Sound Processors for Home Theater Systems

6ch

Electronic Volume

BD3814FV

No.10081EAT05

●Description

BD3814FV is a 1-chip sound processor incorporating such functions as volume, bass, and treble, necessary for AV receivers,

home theater systems, and mini-audio systems. This IC adopts the Bi-CMOS process, and realizes low distortion, low noise,

and a wide dynamic range.

●Features

1) Dynamic range: 132dB (tone bypath, VOL = MUTE, IHF-A)

2) Master volume 6ch independent (0 to -95dB, MUTE 1dB/step)

3) Low current consumption design achieved by adopting the BiCMOS process

4) Maximum output voltage: 4.3Vrms (Vcc=7V, VEE=-7V, RL=10kΩ)

5) Built-in 2 OP amplifiers

6) 2-line serial control (for both 3.3V and 5V)

●Applications

AV receivers, home theater systems, mini-audio systems, TVs etc.

●Absolute

maximum ratings (Ta=25℃)

Parameter

Power supply voltage

Input signal voltage

Power dissipation

Operating temperature range

Storage temperature range

Symbol

VCC

VEE

VIN

Topr

Tastg

Ratings

7.5

-7.5

VCC+0.3 to VEE-0.3

900

-20 to +75

-55 to +125

Unit

℃

*1 Even in the specified range of Power Supply Voltage, applying voltage only to the VCC side may cause an excessive current

to give a permanent damage to the IC.

When starting up power supplies, VEE and VCC should be powered on simultaneously or VEE first; then followed by VCC.

*2 Reduced by 9 mW/C over 25C, when installed on the standard board (size: 70x70x1.6mm).

●Operating

conditions

Must function normally at Ta=25℃.

Parameter

Operating source voltage

Symbol

VCC

VEE

Ratings

Min.

-7.3

Typ.

-7

Max.

7.3

-5

Unit

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2010.06 - Rev.A

BD3814FV

Technical Note

●Electrical

characteristics

Ta=25℃, VCC=7V, VEE=-7V, f=1kHz, Vin=1Vrms, RL=10kΩ, Rg=600Ω, Master volume=0dB,

Bass and Treble=0dB unless otherwise noted.

Limits

Parameter

Symbol

Unit.

Conditions

Min.

Typ.

Max.

VCC

Circuit current

VEE

L input current(CL,DA)

IIL

-17

―

-7

0.5

―

No signal

µA

CL=DA=0V

H input current(CL,DA)

IIH

―

µA

CL=DA=5V

Output voltage gain 1

Gv1

-2

Measure: Pin27,28,29,30, 31,32

Output voltage gain 2

Total harmonic distortion

ratio 1

Total harmonic distortion

ratio 2

Maximum output voltage 1

Gv2

-2

Measure: Pin3, 7

Measure: Pin27,28,29,30,31,32

BW=400 ~ 30kHz

Measure: Pin3, 7

BW=400 ~ 30KHz

Measure: Pin27,28,29,30,31,32

THD=1%

Measure: Pin 3,7

THD=1%

Measure: Pin 27, 28

Tone: By-pass, Rg=0Ω, BW=IHF-A

Measure: Pin 27, 28

Tone: ON, Rg=0Ω, BW=IHF-A

Measure: Pin3, 7, 29, 30, 31, 32

Rg=0Ω, BW=IHF-A

Measure: Pin27(OUTFL)

Rg=0Ω, BW=IHF-A

Reference: Pin28(OUTFR)=1Vrms

Measure: Pin28(OUTFR)

Rg=0Ω, BW=IHF-A

Reference: Pin27(OUTFL)=1Vrms

Measure: Pin 30(OUTSL)

Rg=0Ω, BW=IHF-A

Reference: Pin31(OUTSR)=1Vrms

Measure: Pin 31(OUTSR)

Rg=0Ω, BW=IHF-A

Reference: Pin30(OUTSL)=1Vrms

Measure: Pin 32(OUTSW)

Rg=0Ω, BW=IHF-A

Reference: Pin29(OUTC) =1Vrms

THD1

―

0.001

0.03

THD2

―

0.001

0.03

Total output

Vomax1

3.6

4.3

―

Vrms

Maximum output voltage 2

Vomax2

3.6

―

4.3

1.0

1.7

1.0

―

6.0

Vrms

µVrms

Output noise voltage 1

Vno1

―

Output noise voltage 2

Cross talk between channels

Rch→Lch

Cross talk between channels

Lch→Rch

Cross talk between channels

SRch→SLch

Cross talk between channels

SLch→SRch

Cross talk between channels

Cch→SWch

Vno2

―

CTCRL

―

-95

-80

CTCLR

―

-95

-80

CTCSRL

―

-95

-80

CTCSLR

―

-95

-80

CTCCSW

―

-95

-80

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2010.06 - Rev.A

BD3814FV

Technical Note

Parameter

Symbol

Limits

Min.

Typ.

Max.

Unit.

Conditions

Input impedance V

RinV

kΩ

Measure: Pin27,28,29,30,31,32

Vin=3Vrms

Measure: Pin27,28,29,30, 31,32

0 to –53dB, Vin=3Vrms

Measure: Pin27,28,29,30,31,32

-54 to –95dB,

Vin =3Vrms

Measure: Pin27,28,29,30,31,32

Vin =3Vrms, BW=IHF-A

Measure: Pin27, 28

Tone: By-Pass, Rg=0Ω, BW=IHF-A

Measure: Pin29, 30, 31, 32

Rg=0Ω, BW=IHF-A

Measure: Pin 29(OUTC)

Rg=0Ω, BW=IHF-A

Reference: Pin32(OUTSW)=1Vrms

Measure: Pin 27, 28

f=15kHz, Vin =0.4Vrms

Measure: Pin 27, 28

f=15kHz, Vin =0.4Vrms

Measure: Pin 27, 28

f=15kHz, Vin =0.4Vrms

Measure: Pin 27, 28

f=15kHz, Vin =0.4Vrms

Measure: Pin 27, 28

f=100Hz, Vin=0.4Vrms

Measure: Pin 27, 28

f=100Hz, Vin =0.4Vrms

Measure: Pin 27, 28

f=100Hz, Vin =0.4Vrms

Measure: Pin 27, 28

f=100Hz, Vin =0.4Vrms

Volume control range

GVR

-98

-95

-92

Volume set error 1

Volume output

VE1

-1.5

1.5

Volume set error 2

Maximum attenuation

amount

Residual noise voltage 1

VE2

-2.5

2.5

Vmin

―

-115

-105

Vnom1

―

1.0

6.0

µVrms

Residual noise voltage 2

Cross talk between channels

SWch→Cch

Treble maximum boost gain

Vnom2

―

1.0

6.0

µVrms

CTCSWC

―

-95

-80

GTB

Treble

Treble maximum cut gain

GTC

-16

-14

-12

Treble step resolution

―

Treble gain set error

-2

Bass maximum boost gain

GBB

Bass maximum cut gain

Bass

GBC

-16

-14

-12

Bass step resolution

―

Bass gain set error

-2

* Note: This IC is not designed to be radiation-resistant.

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BD3814FV

●Timing

chart

1. Signal timing conditions

・Data

is read on the rising edge of the clock.

・Latch

is read on the falling edge of the clock.

・Latch

signal must terminate with the LOW state.

* To avoid malfunctions, clock and data signals must terminate with the LOW state.

Technical Note

(CLOCK)

90%

twc

10%

twc

10%

thd

tsd

thd

tsl

thl

DATA

LATCH

90%

twd

90%

twh

10%

90%

twl

90%

DATA

10%

LATCH

Terminate

with Low.

Fig.1

Parameter

Minimum clock width

Minimum data width

Minimum latch width

LOW hold width

Data setup time (DATA→CLK)

Data hold time (CLK→DATA)

Latch setup time (CLK→LATCH)

Latch hold time (DATA→LATCH)

Latch low setup time

Latch low hold time

Symbol

twc

twd

twl

twh

tsd

thd

tsl

thl

Limits

Min.

2.0

1.0

Typ.

－

Max.

－

Unit

μs

2. Voltage conditions for control signal

Parameter

“H” input voltage

“L” input voltage

Condition

Vcc=5 ~ 7.3V

VEE=-5 ~ -7.3V

Limits

Min.

2.2

Typ.

－

Max.(≦Vcc)

5.5

1.0

Unit

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BD3814FV

3. Basic configuration of control data format

Data input direction

MSB

D16

Data

D15

D14

D13

D12

D11

D10

Technical Note

LSB

Data

Select Address

・Control

data format

Data input direction

Data

①

Data

②

Data

③

Data

④

D16

D15

D14

D13

D12

D11

D10

Tone

Select Address

Treble

D16

D15

D14

D13

D12

Bass

D11

D10

Master Volume FRch

D16

D15

D14

D13

D12

D11

D10

Master Volume FLch

Master Volume SRch

D16

D15

D14

D13

D12

D11

D10

Master Volume SLch

Master Volume Cch

Master Volume SWch

By changing select address, 4 control data formats can be selected.

Do not set the select address data to any format other than that specified above.

At power-on sequence, initialize all data.

* is 0 or 1.

Example:

Data input direction

MSB

LSB

MSB

LSB

Data①

Data②

MSB

LSB

MSB

LSB

Data③

Data④

“L” shows latch.

After power-on, for the second and subsequent times, only the necessary data can be selected for setting

Example: When to change bus,

Input direction

MSB

LSB

Data①

“L” shows latch.

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2010.06 - Rev.A