Sanyo LC75386NW Specifications

Overview

The LC75386NE-R and 75386NW are electronic volume and tone control ICs that can implement volume, balance, fader, bass/treble, loudness, input switching, and input gain control functions with a minimum number of external components.

Features

• Volume: 81 positions: from 0 dB to –79 dB in 1-dB steps

and –∞.

A balance function can be implemented by controlling the left and right volume settings independently.

• Fader: Either the rear or front outputs can be attenuated over 16 positions. (16 positions: From 0 dB to –2 dB in 1-dB steps, from –2 dB to –20 dB in 2-dB steps, from –20 to –30 dB in one 10-dB step, –45 dB, –60 dB, and –∞.)

• Bass/treble: Control over ±12 dB in 2-dB steps in each

band.

• Input gain: The input signal can be amplified by from 0

dB to +18.75 dB in 1.25-dB steps.

• Input switching: The left and right channels can each be selected from one of 6 inputs. (Five are single-ended inputs and one is a differential input.)

• Loudness: Taps are output from a 2-dB step volume

control ladder resistor starting at the –32-dB position. A loudness function can be implemented by attaching external capacitors and resistors.

• On-chip buffer amplifiers minimize the number of

required external components.

• Minimal switching noise when no input signals are

present due to fabrication in a silicon gate CMOS process that minimizes the noise generated by internal switches.

• Use of zero-cross switching circuits for internal switches

minimizes switching noise when signals are present.

• Built-in VDD/2 reference voltage generator circuit

• All controls can be set from serial input data.

CMOS IC

33000TN (OT) No.6170-1/24

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Electronic Volume and Tone Control

for Car Stereo Systems

LC75386NE-R, 75386NW

Ordering number : ENN6170

• CCB is a trademark of SANYO ELECTRIC CO., LTD.

• CCB is SANYO’s original bus format and all the bus addresses are controlled by SANYO.

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

No.6170-2/24

LC75386NE-R, 75386NW

14.0

17.2

1.0

1.6

0.15

0.35

0.1

15.6

0.8

3.0max

1

16

17

32

33

48

49

64

2.7

14.0

17.2

1.0

1.6

0.8

SANYO: QIP64E

[LC75386NE-R]

10.0

12.0

1.25

0.51.25

1.25 0.5 1.250.18

12.0

116

17

32

33

48

49

64

10.0

0.5

1.7max

0.5

0.1

0.15

SANYO: SQFP64E

[LC75386NW]

Package Dimensions

unit: mm

3159-QIP64E 3190-SQFP64

Parameter Symbol Conditions

Ratings

Unit

min typ max

Supply voltage V

DD

V

DD

6.0 10.5 V

Input high-level voltage V

IH

CL, DI, CE, MUTE 4.0 V

DD

V

Input low-level voltage V

IL

CL, DI, CE, MUTE V

SS

1.0 V

Input voltage amplitude V

IN

V

SS

V

DD

Vp-p

Input pulse width t

øW

CL 1 µs

Setup time t

setup

CL, DI, CE 1 µs

Hold time t

hold CL, DI, CE 1 µs

Operating frequency fopg CL 500 kHz

Allowable Operating Ranges at Ta = 25°C, VSS= 0 V

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

DD

max V

DD

11 V

Maximum input voltage V

IN

max All input pins

VSS– 0.3 to VDD+ 0.3

V

Allowable power dissipation Pd max

Ta ≤ 85°C, when mounted on a printed

LC75386NE-R 500

mW

circuit board

LC75386NW 420 Operating temperature Topr –40 to +85 °C Storage temperature Tstg –50 to +125 °C

Specifications

Absolute Maximum Ratings at Ta = 25°C, VSS= 0 V

No.6170-3/24

LC75386NE-R, 75386NW

Parameter Symbol Pins Conditions

Ratings

Unit

min typ max

[Input Block]

Input resistance Rin L1 to L4, L6, R1 to R4, R6 30 50 70 kΩ Minimum input gain Ginmin L1 to L4, L6, R1 to R4, R6 –1 0 +1 dB Maximum input gain Ginmax +16.5 +18.75 +21 dB Inter-step setting error ATerr ±0.6 dB Left/right balance BAL ±0.5 dB

[Volume Block]

Input resistance Rvr

LVRIN, RVRIN, loudness off

113 226 339 kΩ Inter-step setting error ATerr ±0.5 dB Left/right balance BAL ±0.5 dB

[Tone Control Block]

Inter-step setting error ATerr ±1.0 dB Bass control range Gbass max. boost/cut ±9 ±12 ±15 dB Treble control range Gtre max. boost/cut ±9 ±12 ±15 dB Left/right balance BAL ±0.5 dB

[Fader Block]

Input resistance Rfed LFIN, RFIN 25 50 100 kΩ

0 dB to –2 dB ±0.5 dB

Inter-step setting error ATerr

–2 dB to –20 dB ±1 dB –20 dB to –30 dB ±2 dB –30 dB to –60 dB ±3 dB

Left/right balance BAL ±0.5 dB

Electrical Characteristics at Ta = 25°C, VDD= 9 V, VSS= 0 V

Overall Characteristics

Parameter Symbol Conditions

Ratings

Unit

min typ max

Total harmonic distortion

THD 1 V

IN

= –10 dBV, f = 1 kHz 0.004 %

THD 2 V

IN

= –10 dBV, f = 10 kHz 0.006 %

Inter-input crosstalk CT V

IN

= 1 Vrms, f = 1 kHz 80 88 dB

Left/right channel crosstalk CT V

IN

= 1 Vrms, f = 1 kHz 80 88 dB

Maximum attenuation

V

O

min 1 V

IN

= 1 Vrms, f = 1 kHz 80 88 dB

V

O

min 2 V

IN

= 1 Vrms, f = 1 kHz, INMUTE, with the fader set to –∞ 90 95 dB

Output noise voltage

V

N

1 All controls flat, with the IHF-A filter 5 10 µV

V

N

2 All controls flat, with a 20 Hz to 20 kHz bandpass filter 7 15 µV

Current drain I

DD

33 40 mA

Input high-level current I

IH

CL, DI, CE, VIN= 9 V 10 µA

Input low-level current I

IL

CL, DI, CE, VIN= 0 V –10 µA

Maximum input voltage V

CL

THD = 1 %, RL= 10 kΩ, all controls flat, fIN= 1 kHz 2.5 2.9 Vrms

Common-mode rejection ratio CMRR V

IN

= 0 dB, f = 1 kHz 45 dB

No.6170-4/24

LC75386NE-R, 75386NW

Pin Assignment

34 333536373839404142434445464748

3249 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

41 2 3 5 6 7 8 9 10 11 12 13 14 15 16

50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

LTOUT

LF3C3

LF3C2

LF3C1

NC

LF1C3

LF1C2

LF1C1

LTIN

LVROUT

LCOM

LCT

LVRIN

LSELO

L5P LFIN

L5M LFOUT

L4 LROUT L3 LAV

SS

L2 LZCLP L1 DV

SS

L6 CL

LC75386NE-R LC75386NW

V

DD

DI

Vref CE

R6 MUTE R1 RAV

SS

R2 RZCLP R3 TIM R4 RROUT

R5M RFOUT

R5P RFIN

(Top view)

RSELO

RVRIN

RCT

RCOM

RVROUT

RTIN

RF1C1

RF1C2

RF1C3

NC

RF3C1

RF3C2

RF3C3

RTOUT

200

0

400

600

800

1000

1200

1040

500

1400

–40 –20 0 20 40 60 80 100

420

200

0

400

600

800

1000

1200

1400

–40 –20 0 20 40 60 80 100

Allowable power dissipation, Pdmax — mW

Ambient temperature, Ta — °C

Mounted on the printed circuit board

Independent IC

Printed circuit board: 114.3 × 76.2 × 1.5 mm

Pd max — Ta

[LC75386NE-R] [LC75386NW]

Allowable power dissipation, Pdmax — mW

Pd max — Ta

Ambient temperature, Ta — °C

Mounted on the stipulated printed circuit board

Independent IC

Printed circuit board size: 114.3 × 76.1 × 1.6t mm Printed circuit board material: Fiberglass/epoxy

No.6170-5/24

LC75386NE-R, 75386NW

Equivalent Circuit and Sample Application Circuit Diagram

DI

VDD

CE

CL

0.033

µ

F

1 M

Ω

47 k

Ω

10

µ

F

10

µ

F

PA

L5P

L5M

L4

LFIN

µ

COM

RFIN

RFOUT

RROUT

TIM

RZCLP

RAVSS

MUTE

CE

DI

CL

LZCLP

LAVSS

LROUT

LFOUT

31

35 34 33

32

LOGIC CIRCUIT

ZERO CROSS DET

Multiplexer

ZERO CROSS DET

CCB

INTERFACE

30

29

28

27

26

25

24

23

22

21

20

19

18

17

PA

DVSS

10

µ

F

PA

10

µ

F

PA

36373839404142434445464748

14 15 1613121110987654321

504951

52

53

54

55

56

57

58

59

60

61

62

63

64

L3

L2

L1

VDD

Vref

R1

R2

R3

1

µ

×

6

R4

R5M

R5P

[BASS fo=100Hz] [TREBLE fo=10000Hz]

1 µF

0.033

µ

F

0.01

µ

F

330p F

10

µ

F

LF3C1

LF3C2

LF3C3

LTOUT

LF1C2

NC

LF1C3

LF1C1

LVROUT

LTIN

LVref

Vref

LVref

LCOM

LSELO

LVRIN

LCT

10 µF

220pF

1

µ

F

0.1

µ

F68 k

Ω

4.7 k

Ω

10 µF

CONTROL

CIRCUIT

NO SIGNAL

TIMER

Multiplexer

[BASS fo=100Hz] [TREBLE fo=10000Hz]

1 µF

0.033

µ

F

0.01

µ

F

330pF

10

µ

F

RF3C1

RF3C2

RF3C3

RTOUT

RF1C2

RF1C3

RF1C1

RVROUT

RTIN

Vref

RVref

RCOM

RSELO

RVRIN

RCT

10 µF

RVref

220p F

1

µ

F

0.1

µ

F68 k

Ω

4.7 k

Ω

10 µF

22

µ

F

LVref

RVrefLVref

LVref

RVref RVref

R6

L6

1 M

Ω

• In the LC75386NW version, LZCLP (pin 28) and RZCLP (pin 21) are unused, and must be left open.

Vref

1 M

Ω

No.6170-6/24

LC75386NE-R, 75386NW

Pin Functions

Pin No. Pin Function Notes

• Single end inputs

54 53 52 51 55 59 60 61 62 58

L1 L2 L3 L4

L6 R1 R2 R3 R4 R6

V

DD

LVref RVref

• Input selector outputs

48

1

LSEL0 RSEL0

V

DD

• Differential inputs

50 49 63 64

L5M

L5P R5M R5P

V

DD

M

V

DD

P

LVref RVref

• Inputs for the 2-dB step volume control

• These inputs must be driven from low-impedance circuits.

47

2

LVRIN RVRIN

V

DD

LVref RVref

• Loudness function pins. Connect the high-band compensation RC circuits between the LCT (RCT) and the LVRIN (RVRIN) pins and connect the low-band compensation RC circuits between the LCT (RCT) and Vref.

46

3

LCT

RCT

V

DD

• 2-dB step volume control outputs

• To reduce switching noise, each of these pins should be

connected to Vref through a capacitor.

45

4

LCOM RCOM

V

DD

• Equalizer input

43

6

LTIN RTIN

Continued on next page.

V

DD

LVref RVref

No.6170-7/24

LC75386NE-R, 75386NW

Continued from preceding page.

Pin No. Pin Function Equivalent circuit

• Equalizer input

33 16

LTOUT RTOUT

V

DD

• Fader block inputs

• These inputs must be driven from low-impedance circuits.

32 17

LFIN RFIN

V

DD

• Fader block outputs. The front and rear outputs can be

attenuated independently. The attenuation is the same in the left and right channels.

31 30 18 19

LFOUT LROUT RFOUT

RROUT

V

DD

• Connections for the capacitors that for the tone control

circuit attenuation filter. The low band compensation capacitors must be connected

between the following pins:

LF1C1 (RF1C1) and LF1C2 (RF1C2) LF1C2 (RF1C2) and LF1C3 (RF1C3)

42 41 40

7 8 9

LF1C1 LF1C2 LF1C3 RF1C1 RF1C2 RF1C3

• Connections for the capacitors that for the tone control

circuit attenuation filter. The low band compensation capacitors must be connected

between the following pins:

LF3C1 (RF3C1) and LF3C2 (RF3C2) LF3C2 (RF3C2) and LF3C3 (RF3C3)

36 35 34 13 14 15

LF3C1 LF3C2 LF3C3 RF3C1 RF3C2 RF3C3

Continued on next page.

• Unused pins. These pins are not connected to the chip.

39 38 37 10 11 12

NC NC NC NC NC NC

• VDD/2 voltage generator block. A capacitor with a value of

about 10 µF must be inserted between Vref and AV

SS(VSS

)

to reduce power supply ripple.

57 Vref

V

DD

LVref RVref

C2 C3

C1

V

DD

LVref RVref

No.6170-8/24

LC75386NE-R, 75386NW

Continued from preceding page.

Pin No. Pin Function Equivalent circuit

• Serial data and clock inputs used for device control

26 25

CL

DI

V

DD

V

DD

• Used for the zero cross circuit no-signal timer function.

If a zero cross signal does not occur between the point when data is loaded and the point when the timer times out, the data will be stored forcibly when the timer times out.

20 TIM

V

DD

LVref RVref

• Band limiting for the zero cross detection circuit

• These pins are normally left open.

• These pins are unused in the LC75386NW version and

must be left open.

28 21

LZCLP

RZCLP

24 CE

• Chip enable input. Data is written to the internal latch when

this pin goes from high to low. The analog switches then operate.

Data transfers are enabled when this pin is high.

44

5

LVROUT RVROUT

• 1-dB step volume control output

• Power supply56

V

DD

• Logic system ground27

DV

SS

• Analog system ground

29 22

LAV

SS

RAV

SS

V

DD

• External muting control

• When this pin is set to the V

SS

level, the fader volume block

is forcibly set to – ∞.

23 MUTE

LC75386NE-R only

V

DD