ROHM BD3813KS, BD3815KS Technical data

Sound Processors for Home Theater Systems

5.1ch Sound Processors

BD3813KS,BD3815KS

●Description

The BD3813KS and BD3815KS sound processors integrate a gain amp and volume/bass/treble controls on a single chip, making them optimally suited for use in audio applications, such as AV receivers, home theater systems and mini-component systems. Used in combination with the BD3812F, a 2ch volume IC, the units enable 6.1ch and 7.1ch operation. In addition, utilization of a BiCMOS process ensures a wide dynamic range (129dB).

●Features

1) Wide dynamic range: 129dB (Tone Bypass, VOL=MUTE, IHF-A)

2) Independent 6 channels for Master Volume (0 to -95 dB, MUTE 1dB/Step) Implementation of a resistance ladder type circuit reduces residual noise and shock sounds during switching.

3) Low current consumption achieved through utilization of BiCMOS processes

4) Maximum output voltage: 4.2Vrms (Vcc=7V, VEE=-7V, RL=10kΩ)

5) Built-in 5ch independent input gain amplifier - useful for amplifying input signals

6) Built-in 2ch output port

7) 2-wire serial control (for both 3.3V and 5V)

●Applications

AV receivers, home theater systems and mini-component systems

●Line up matrix

Parameter BD3813KS BD3815KS

No.10081EAT04

Mode Selector Yes Yes

Input Gain 0 6 12dB 0 6 18dB

Volume 0 to -95dB 1dB/Step 0 to -95dB 1dB/Step

Bass, Treble 14dB 2dB/Step 14dB 2dB/Step

Number of Ports 2 2

Package SQFP56 SQFP56

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BD3813KS,BD3815KS

●Absolute maximum ratings (Ta=25℃)

Parameter Symbol Ratings Unit

Power Supply Voltage

Input Signal Voltage VIN

Power Dissipation Pd

VCC

VEE

7.5

-7.5

+0.3 to VEE-0.3

V

CC

1000

Technical Note

*1

*2

V

mW

Operating Temperature Range Topr

Storage Temperature Range Tastg

*1 Applying voltage only to the VCC side, even if within the specified power supply voltage range, may cause excessive current to flow, resulting in permanent damage to the IC. Therefore, when starting up the power supplies, VEE and V should either be powered ON simultaneously, or VEE first, followed by V *2 Please note the derating characteristics above Ta=25℃: 10mW/℃ (Mounted on a 70mmx70mmx1.6mm sized board).

20 to 75

55 to 125

.

CC

●Operating conditions

(Normal function at Ta=25℃)

Parameter Symbol

Operating Supply Voltage

Min. Typ. Max.

VCC 5 7 7.3

VEE -7.3 -7 -5

Ratings

°C

Unit

V

CC

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●Electrical Characteristics

Ta =2 5℃, VCC=7V, VEE=-7V, f=1kHz, VIN=1Vrms, RL=10kΩ, Rg=600Ω Input Gain=0dB, Master Volume=0dB, Bass bnd Treble=0dB, Unless otherwise noted.

Circuit Current

Output Voltage Gain 1 Gv1 -2 0 2 dB Measure : Pin31, 29, 27, 25, 23, 21

Output Voltage Gain 2 Gv2 -2 0 2 dB Measure : Pin19

Parameter Symbol

VCC

IQ

VEE -20 -10 ―

Limits

Min. Typ. Max.

― 10 20

Unit Conditions

mA No signal

Technical Note

Total Harmonic Distortion ratio 1

Total Harmonic Distortion ratio 2

Maximum Output Voltage 1 Vomax1 3.4 4.2 ― Vrms

Maximum Output Voltage 2 Vomax2 3.4 4.2 ― Vrms

Output Noise Voltage 1 Vno1

Total Output

Output Noise Voltage 2 Vno2 ― 1.5 8.0 µVrms

Output Noise Voltage 3 Vno3 ― 1.0 5.0 µVrms

Crosstalk between Channels RchLch

Crosstalk between Channels LchRch

Crosstalk between Selectors DVD

Crosstalk between Selectors D/A

THD1 ― 0.004 0.05 %

THD2 ― 0.004 0.05 %

― 2.0 12 µVrms

― 1.5 8.0 µVrms

CTCRL ― -95 -80 dB

CTCLR ― -95 -80 dB

CTSA ― -95 -80 dB

CTSB ― -95 -80 dB

Measure : Pin31, 29, 27, 25, 23, 21 BW=400～30kHz

Measure : Pin19 BW=400～30kHz

Measure : Pin31, 29, 27, 25, 23, 21 THD=1%

Measure : Pin19 THD=1%

Measure : Pin 31,29 Rg=0Ω, Tone: ON, BW=IHF-A Measure : Pin 31,29 Rg=0Ω, Tone: By-pass, BW=IHF-A

Measure : Pin 27,25,23,21 Rg=0Ω, BW=IHF-A

Measure : Pin 19 Rg=0Ω, BW=IHF-A

Measure : Pin29(OUTFL) Rg=0Ω, BW=IHF-A Reference : Pin31(OUTFR)=1Vrms

Measure : Pin31(OUTFR) Rg=0Ω, BW=IHF-A Reference : Pin29(OUTFL)=1Vrms

Measure : Pin 31,29,27,25, 23,21,19 Rg=0Ω, BW=IHF-A

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2010.06 - Rev.A

BD3813KS,BD3815KS

Parameter Symbol

Limits

Min. Typ. Max.

Technical Note

Unit Conditions

Volume Control Range GVR -98 -95 -92 dB

Volume Setting Error 1 VE1 -2 0 2 dB

Volume Setting Error 2 VE2 -3 0 3 dB

Volume Output

Channel Balance VCB -0.5 0 0.5 dB

Maximum Attenuation Vmin ― -115 -105 dB

Input Gain Control Range (BD3813KS)

Input Gain Control Range (BD3815KS)

Input Gain Setting Error

Input Gain

(BD3813KS)

Input Gain Setting Error (BD3815KS)

GIG 10 12 14 dB

16 18 20 dB

GIE -2 0 2 dB

-2 0 2 dB

Measure : Pin31, 29, 27, 25, 23, 21 Vin=3Vrms

0 to –53dB Measure : Pin31, 29, 27, 25, 23, 21 Vin=3Vrms

-54 to –95dB Measure : Pin31, 29, 27, 25, 23, 21 Vin=3Vrms

Measure : Pin31, 29, 27, 25, 23, 21 Vin=3Vrms, Volume=0dB

BW=IHF-A Measure : Pin31, 29, 27, 25, 23, 21 Vin=3Vrms

Measure : Pin31, 29, 27, 25, 23, 21, 19 Vin=0.4Vrms

Treble Maximum Boost Gain GTB 12 14 16 dB

Treble Maximum Cut Gain GTC -16 -14 -12 dB

Treble

Treble Step Resolution TR ― 2 ― dB

Treble Gain Setting Error TE -2 0 2 dB

Bass Maximum Boost Gain GBB 12 14 16 dB

Bass Maximum Cut Gain GBC -16 -14 -12 dB

Bass

Bass Step Resolution BR ― 2 ― dB

Bass Gain Setting Error BE -2 0 2 dB

Port H Output PH 4.5 4.9 ― V

Port

* This product is not designed to be resistant against radiation

Measure : Pin 31, 29 f=15kHz, VIN=0.4Vrms

Measure : Pin 31, 29 f=100Hz, Vi=0.4Vrms

Measure : Pin 31, 29 f=100Hz, VIN=0.4Vrms

Measure : Pin11,12 VDD=5V, RL=47kΩ

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BD3813KS,BD3815KS

●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. ・The latch signal must terminate with the Low state.

*To avoid malfunction, the clock and data signals must terminate with the Low state.

CL

（Clock）

90% 90% 90% 90%

twc

10% 10% 10%

twc

thd thdth ts tsl thl tsd

DA

Data Latch

90% 90% 90%

twd

Data Data

twh

10%

Fig.1

Parameter Symbol

Min. Typ. Max.

90% 90%

twl

Latch

10% 10%

Limits

Technical Note

Terminate with Low

Unit

Minimum Clock Width twc 2.0   µs

Minimum Data Width twd 2.0   µs

Minimum Latch Width twl 2.0   µs

Low Hold Width twh 2.0   µs

Data Set-up Time (DataClock) tsd 1.0   µs

Data Hold Time ( Clock  Data ) thd 1.0   µs

Latch Set-up Time ( Clock Latch) tsl 1.0   µs

Latch Hold Time ( Data  Latch ) thl 1.0   µs

Latch Low Set-up Time ts 1.0   µs

Latch Low Hold Time th 1.0   µs

2) Control Signal Voltage Conditions

Parameter

Condition

Limits

Min. Typ. Max.(≤Vcc)

Unit

“H” Input Voltage

“L” Input Voltage 0  1.0 V

Vcc=57.3V

=-5-7.3V

V

EE

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2.2  5.5 V

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3) Control Data Format - Basic Configuration Input direction

MSB LSB

D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Data

・Control Data Formats

Input direction

D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Data

Input Gain

1

2

3

4

FR/FL

D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Input Gain

SR/SL

Treble Bass

Master Volume FRch Master Volume FLch 0 0 1

Master Volume SRch Master Volume SLch 0 1 0

Data Select Address

Input GainC Input Gain

SW

Input Gain

SB

Port A

TON

E

0:L

1:H

SW1

0:A 1:B

Port B

0:L 1:H

Technical Note

Select Address

SW3

SW2

0:A

1:B

* * 1 0 0 0

0 0 0 0

D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Data

5

Changing the Select Address settings allows selection of four different control formats. For Select Address, values except those shown above must not be specified. The address data must be initialized after every power ON. * Indicates 0 or 1.

(Example)

Input direction

MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB

Data1 L Data 2 L Data 3 L Data 4 L Data 5 L

“L” means latch.

After power ON, only the desired data can be set for the second and subsequent times,.

(Example) When changing the bass,

Input direction

Master Volume Cch Master Volume SWch 0 1 1

MSB LSB

Data 2 L

“L” means latch.

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