ROHM BD3816K1, BD3817KS Technical data

Sound Processors for Home Theater Systems

6.1ch
Sound Processor

BD3816K1,BD3817KS

●Description

The BD3816K1 and BD3817KS are 6.1ch sound processors. Functions required for applications, such as AV receivers and
home theater systems, are integrated into a single chip. A wide dynamic range of 132dB is achieved by utilizing the
BiCMOS process.

●Features

1) Dynamic range: 132dB (Volume Direct Mode, VOL=MUTE, IHF-A)

2) Independent 7 channels for Master Volume (0 to -95 dB, MUTE 1dB/Step)

3) Supporting 2

4) Low current consumption design achieved by adopting the Bi-CMOS process.

5) Maximum output voltage: 4.2Vrms (VCC=7V, VEE=-7V, RL=10k).

6) Built-in Input Gain Amp useful for amplifying input signals (0-7dB, 1dB/Step).

7) Built-in Output Gain Amp useful for adjusting output signal voltages (0-17dB, 1dB/Step)

8) Built-in mixing circuit for distributing the output signals from Center and Subwoofer channel to Front R/L channels
(0, -3, -4.5dB).

9) 2ch Volume control BD3812F or 6ch Function Switch BD3843FS can be controlled simultaneously
by the serial control bus.

10) REC A output terminal with a REC input/output switch useful for monitoring Equalizer Amp.
(For BD3816K1, available as an input function of the seventh line.)

11) Output mute controlled by either serial data or an external control terminal.

12) 2-wire serial control (For both 3.3V and 5V)

●Applications

AV receivers, home theater systems, and mini-audio systems.

●Line up matrix

nd

room entertainment/2nd source recording.

No.10081EAT06

Parameter BD3816K1 BD3817KS

6(+1) inputs

Number of Input Selectors

Input Gain 0 ~ 7dB 1dB/step 0 ~ 7dB 1dB/step

Volume 0 ~ -95dB 1dB/step、7ch 0 ~ -95dB 1dB/step、7ch

Bass, Treble ±14dB 2dB/step ±14dB 2dB/step

Output Gain 0 ~ 17dB 1dB/step 0 ~ 17dB 1dB/step

Mix i n g Yes Yes

Package QFP80 SQFP100

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ROUTA terminal: available as
an input selector of the seventh line

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10 inputs, 2 outputs

2010.06 - Rev.A

BD3816K1,BD3817KS

●Absolute maximum ratings (Ta=25℃)

Parameter Symbol Ratings Unit

Technical Note

Power Supply Voltage

Power Dissipation Pd

VCC 7.5 *1

VEE -7.5

1200 (BD3816K1)

1300 (BD3817KS)

*2 mW

Operating Temperature Range Topr -20 ~ +75 ℃

Storage Temperature Range Tstg -55 ~ +125 ℃

*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 12 mW/℃ over 25℃ (BD3816K1), when installed on the standard board (size: 70x70x1.6mm).
Reduced by 13 mW/℃ over 25℃ (BD3817KS), when installed on the standard board (size: 70x70x1.6mm)

●Operating conditions

Must function normally at Ta=25C.

Parameter Symbol

Operating source voltage

Min. Typ. Max.

VCC 5.0 7.0 7.3

VEE -7.3 -7.0 -5.0

Ratings

Unit

●Electrical characteristics

Ta =2 5℃, V

CC=7V, f=1kHz, Vin=1Vrms, RL=10k, Rg=600, Input Gain=0dB, Volume=0dB, Output Gain=0dB, Bass=0dB,

Treble=0dB, Mixing c/sw=OFF, unless otherwise noted.

Parameter Symbol

Min. Typ. Max.

Limits

Unit Conditions

V

V

Circuit Current

VCC

IQ

－ 24 40 mA No signal

VEE -40 -24 －

Output Voltage Gain Gv -2 0 2 dB

Total Harmonic Distortion Ratio THD － 0.001 0.03 % BW=400Hz-30kHz

Maximum Output Voltage Vomax 3.6 4.2 － Vrms THD=1%

Rg=0Ω, BW=IHF-A
(Output gain ON, Tone ON)

Rg=0Ω, BW=IHF-A
(Output gain ON, Tone OFF)

Rg=0Ω, BW=IHF-A
(*OM=Volume Direct)

Output Noise Voltage Vno

－ 2.0 12 µVrms

－ 1.5 8 µVrms

－ 1.2 8 µVrms

Cross-talk between Channels CTC － -95 -80 dB Rg=0Ω, BW=IHF-A

Cross-talk between Selectors CTS － -95 -80 dB Rg=0Ω, BW=IHF-A

Volume Output Voltage GVV -2 0 2 dB

Volume Total Harmonic
Distortion Ratio

THDV － 0.001 0.03 % BW=400Hz-30kHz

Volume Output Noise Voltage VnoV － 1.2 8 µVrms Rg=0Ω, BW=IHF-A

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2010.06 - Rev.A

BD3816K1,BD3817KS

Parameter Symbol

Volume Control Range VOL -97.5 -95 -92.5 dB

Volume Setting Error 1 VOLE1 -1.5 0 1.5 dB

Volume Setting Error 2 VOLE2 -2.5 0 2.5 dB

Maximum Attenuation VOLmin － -115 -105 dB

Treble Maximum Boost Gain GTB 12 14 16 dB f=15kHz, Vin=0.4Vrms

Treble Maximum Cut Gain GTC -16 -14 -12 dB f=15kHz, Vin=0.4Vrms

Treble Step Resolution TR － 2 － dB f=15kHz, Vin=0.4Vrms

Treble Gain Setting Error TE -2 0 2 dB f=15kHz, Vin=0.4Vrms

Bass Maximum Boost Gain GBB 12 14 16 dB f=100Hz, Vin=0.4Vrms

Bass Maximum Cut Gain GBC -16 -14 -12 dB f=100Hz, Vin=0.4Vrms

Min. Typ. Max.

Limits

Unit Conditions

Vin=3Vrms
*OM=Volume Direct

0 to -53dB, Vin=3Vrms
*OM=Volume Direct

-54dB to -95dB, Vin=3Vrms
*OM=Volume Direct

Vin=3Vrms, BW=IHF-A
*OM=Volume Direct

Technical Note

Bass Step Resolution BR － 2 － dB f=100Hz, Vin=0.4Vrms

Bass Gain Setting Error BE -2 0 2 dB f=100Hz, Vin=0.4Vrms

C Mixing Gain Control Range GMCG -6.5 -4.5 -2.5 dB *OM=Volume Direct

C Mixing Gain Setting Error GMCE -2 0 2 dB *OM=Volume Direct

SW Mixing Gain Control Range

SW Mixing Gain Setting Error GMSWE -2 0 2 dB *OM=Volume Direct

Input Gain Control Range GIG 5 7 9 dB

Input Gain Setting Error GIE -2 0 2 dB

Output Gain Control Range GOG 15 17 19 dB

Output Gain Setting Error GOE -2 0 2 dB

ROUT Output Impedance RoutR － 20 100 Ω

ROUT Voltage Gain GVR -2 0 2 dB RL=47kΩ

ROUT Total Harmonic
Distortion Ratio

* OM:Output mode

GMSW

G

THDR － 0.005 0.09 % RL=47kΩ, BW=400Hz-30kHz

-6.5 -4.5 -2.5 dB *OM=Volume Direct

Vin=0.4Vrms
*OM=Volume Direct

Vin=0.4Vrms
*OM=Volume Direct

Vin=0.4Vrms
*OM=Output gain ON(Tone OFF)

Vin=0.4Vrms
*OM=Output gain ON(Tone OFF)

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

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3/17

2010.06 - Rev.A

BD3816K1,BD3817KS

●Timing chart

1) Signal Timing Cond itions

・Data is read on the rising edge of the clock.
・Latch is read out 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.

1byte=17bit

CL

CLOCK

（

DA

DATA

LATCH

）

90% 90% 90%

Parameter Symbol

90% 90% 90% 90%

tsu

twd

DATA

twc

10% 10% 10%

twc

thd thd th ts tsl thl tsd

twh

10%

Fig. 1

Min. Typ. Max.

DATA

Limits

90% 90%

twl

10% 10%

LATCH

Unit

Technical Note

Terminate
with Low

Minimum Clock Width twc 1.0 － － µs

Minimum Data Width twd 1.0 － － µs

Minimum Latch Width twl 1.0 － － µs

LOW Hold Width twh 1.0 － － µs

Data Set-up Time (DATACLK) tsd 0.5 － － µs

Data Hold Time (CLKDATA) thd 0.5 － － µs

Latch Set-up Time (CLKLATCH) tsl 0.5 － － µs

Latch Hold Time (DATALATCH) thl 0.5 － － µs

Latch Low Set-up Time ts 0.5 － － µs

Latch Low Hold Time th 0.5 － － µs

2) Voltage Conditions for Control Signals

Parameter Condition

“H” Input Voltage

“L” Input Voltage 0 － 1.0 V

Vcc=5 ~ 7.3V
V

EE=-5 ~ -7.3V

Limits

Min. Typ. Max. (≦Vcc)

2.2 － 5.5 V

Unit

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4/17

2010.06 - Rev.A

BD3816K1,BD3817KS

3) Control Data Format List

Data input Direction

MSB LSB

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

Data

(1)BD3816K1 Control Data Formats

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

Data

①

FRL select

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

Data

②

Data

③

Data

④

Data

⑤

Data

⑥

Data

⑦

Data

⑧

・By changing Select Address, eight different control formats are selectable.

・At power-on sequence, initialize all data.

(Example)

REC A

mode select

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

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

Input gain

FRLch

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

Master volume

and Output gain

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

Master volume

and Output gain

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

Master volume

and Output gain

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

Master volume

and Output gain

For Select Address, the values, except for those shown above, must not be specified.

Data input Direction

MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB

6.1ch

select

REC B REC C

Treble Bass

Input gain

SRLch

Input select 0 0 0 0 0 0

Output

mode select

SWch

FRch

SRch

Cch

Data Select Address

0 0 1 0 0 0

Mixing

Cch

Input gain

Cch

Input gain

SWch

Master volume

and Output gain

Master volume

and Output gain

Master volume

and Output gain

Mixing

SWch

Input gain

CBch

1 0 0 0 0

1 1 0 0 0

0 0 0 1

FLch 0 1 0

SLch 0 1 1

CBch 1 0 1

Technical Note

Select Address

Data① L Data② LData③ L Data④ LData⑤ LData⑥ L Data⑦ L Data⑧ L

“L” means latch.

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

Example: When changing the input gain in the example:

Data input Direction

MSB LSB

Data④ L

“L” means latch.

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5/17

2010.06 - Rev.A

BD3816K1,BD3817KS

(2)BD3817K1 Control Data Formats

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

Data

①

FRL select

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

Data

Data

Data

Data

Data

Data

Data

REC A

②

mode select

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

③

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

④

⑤

⑥

⑦

⑧

・By changing Select Address, eight different control formats are selectable.

・At power-on sequence, initialize all data.

Example:

MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB

Input gain

FRLch

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

Master volume

and Output gain

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

Master volume

and Output gain

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

Master volume

and Output gain

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

Master volume

and Output gain

For Select Address, the values, except for those shown above, must not be specified.

Data input Direction

6.1ch
select

REC B REC C

Treble Bass

Input gain

SRLch

Input select1 Input select2 0 0 0 0 0

Output

mode select

SWch

FRch

SRch

Cch

Input gain

Cch

Input gain

0 0 1 0 0 0

Mixing

Cch

SWch

Master volume

and Output gain

Master volume

and Output gain

Master volume

and Output gain

Mixing

SWch

Input gain

CBch

1 0 0 0 0

1 1 0 0 0

0 0 0 1

FLch 0 1 0

SLch 0 1 1

CBch 1 0 1

Technical Note

Select Address

Data① L Data② LData③ L Data④ LData⑤ LData⑥ L Data⑦ L Data⑧ L

“L” means latch.

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

Example: When changing the input gain in the example:

Data input Direction

MSB LSB

Data④ L

“L” means latch.

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6/17

2010.06 - Rev.A