SANYO LC75412E, LC75412W Datasheet

Ordering number : ENN7053

CMOS IC

LC75412E, 75412W

Electronic Volume Controller

for Car Audio Systems

Overview

The LC75412E and 75412W are electronic volume controllers that enable control of volume, balance, fader, bass/treble, loudness, input switching, and input gain using only a small number of external components.

Functions

• Volume: 0 dB to –79 dB in 1-dB steps, and –∞ (81 positions) Balance function with separate L/R control

•Fader: rear output or front output can be attenuated across 16 positions (in 1-dB steps from 0 dB to –2 dB, 2-dB steps from –2 dB to –20 dB, 10-dB

steps from –20 dB to –30 dB, and –45 dB, –60 dB, –∞ )

•Bass/treble: Each band can be controlled in 2-dB steps

from ±0 dB to ±18 dB.

• Input gain: 0 dB to +18.75 dB (1.25-dB steps) amplification is possible for the input signal.

• Input switching: Six input signals can be selected for Left and for Right (five are singleended inputs and one is a differential input.)

• Loudness: A tap is output from the –32 dB position of a volume control resistor ladder. A loudness function can be implemented by connecting an external RC circuit.

Features

•On-chip buffer amplifier cuts down number of external components

•Low switching noise generated by on-chip switch through use of silicon gate CMOS process, for low switching noise when there is no signal

•Low switching noise when there is a signal due to use of on-chip zero-cross switching circuit

•On-chip 1/2 VDD reference voltage circuit

•Controls performed with serial input (CCB)

•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.

SANYO Electric Co.,Ltd. Semiconductor Company

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

O1901RM (OT) No. 7053-1/21

LC75412E, 75412W

Package Dimensions

unit: mm

3159-QIP64E

			[LC75412E]
				17.2
				14.0	1.6
		1.0	0.8	0.35	1.0	0.15
					33
1.6	1.0	48
						32
		49

17.2	14.0

0.8

				17
	1.0	64		3.0max
		1	16		0.1
					2.7
		15.6		0.8

SANYO: QIP64E

unit: mm

3190-SQFP64

	[LC75412W]
		12.0
		10.0
1.25	0.5	0.18	1.25	0.15
48				33
49				32
1.25

12.0

10.0

0.5

		64		17
	1.25			1.7max
		1	16
				0.1
			0.5	0.5

SANYO: SQFP64

Pin Assignment

		LSELO	LVRIN	LCT	NC	NC	NC	LF1C1	LF1C2	LF1C3	NC	NC	NC	LF3C1	LF3C2	LF3C3	LTOUT
	48		47	46	45	44	43	42	41	40	39	38	37	36	35	34	33
L5P 49
L5M 50
L4	51
L3	52
L2	53
L1	54
L6	55
VDD 56							LC75412E/W
Vref	57
R6	58
R1	59
R2	60
R3	61
R4	62
R5M 63
R5P 64
	1		2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
		RSELO	RVRIN	RCT	NC	NC	NC	RF1C1	RF1C2	RF1C3	NC	NC	NC	RF3C1	RF3C2	RF3C3	RTOUT

32		LFIN
31		LFOUT
30		LROUT
29		LAVSS
28		TEST
27		DVSS
26		CL
25		DI
24		CE
23		MUTE
22		RAVSS
21		NC
20		TIM
19		RROUT
18		RFOUT
17		RFIN

No. 7053-2/21

LC75412E, 75412W

Equivalent Circuit Block Diagram/Sample Application Circuit

0.33µF

1kΩ

10kΩ

F

10 F

PA

PA

10 F

CL

COM

CE

0.033

PA 10 F

PA 10 F

DI

LFIN

LFOUT

LROUT

LAVSS

TEST

DVSS

CL

DI

CE

MUTE

RAVSS

NC

TIM

RROUT

RFOUT

RFIN

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

47kΩ

1MΩ

10 F

CCB INTERFACE

NO SIGNAL

TIMER

10 F

LTOUT

33

LVref

RVref

16

RTOUT

0.001µF

LF3C3

353637 34

DETZEROCROSS

CIRCUITLOGIC

DETZEROCROSS

141312 15

RF3C3

0.001µF

LF3C2

RF3C2

LF3C1

RF3C1

0.001µF

0.001µF

NC

NC

NC

38

11

NC

NC

40 39

CONTROL

CIRCUIT

9 10

NC

0.1µF

LF1C3

RF1C3

0.1µF

LF1C2

4342 41

Multiplexer

Multiplexer

6 7 8

RF1C2

NC

NC

LF1C1

RF1C1

0.1µF

0.1µF

NC

45 44

LVref

RVref

4 5

NC

NC

NC

LCT

46

3

RCT

LVRIN

47

2

RVRIN

1000pF

F1

1F

1000pF

LSELO

48

1

RSELO

LVref

LVref

RVref

RVref

LVref

RVref

+

+

+

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

L5P

L5M

L4

L3

L2

L1

L6

Vref

R6

R1

R2

R3

R4

R5M

R5P

VDD

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

F

F × 7

22

F × 7

1

1

0.33µF 1kΩ

10kΩ

No. 7053-3/21

LC75412E, 75412W

Specifications

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

	Parameter	Symbol	Conditions		Ratings	Unit
	Maximum supply voltage	VDD max	VDD		11	V
	Maximum input voltage	VIN max	All input pins		VSS – 0.3 to VDD + 0.3	V
	Allowable power dissipation	Pd max	Ta ≤ 85°C, when mounted on board	QIP64E	680	mW
				SQFP64	800
	Operating temperature	Topr			–40 to +85	°C
	Storage temperature	Tstg			–50 to +125	°C

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

Parameter	Symbol		Conditions		Ratings		Unit
				min	typ	max
Supply voltage	VDD	VDD		6.0		10	V
Input high-level voltage	VIH	CL, DI, CE		4.0		10	V
Input low-level voltage	VIL	CL, DI, CE		VSS		1.0	V
Input amplitude voltage	VIN			VSS		VDD	Vp-p
Input pulse width	TøW	CL		1			µs
Setup time	Tsetup	CL, DI, CE		1			µs
Hold time	Thold	CL, DI, CE		1			µs
Operating frequency	fopg	CL				500	kHz

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

	Parameter	Symbol	Pin Name	Conditions		Ratings		Unit
					min	typ	max
	[Input block]
	Input resistance	Rin	L1 to L4, L6, R1 to R4, R6		25	50	100	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
	Step setting error	ATerr					±0.5	dB
	L/R balance	BAL					±0.5	dB
	[Volume Block]
	Input resistance	Rvr	LVRIN, RVRIN, loudness off		25	50	100	kΩ
	Step setting error	ATerr					±0.5	dB
	L/R balance	BAL					±0.5	dB
	[Tone block]
	Step setting error	ATerr					±1.0	dB
	Bass control range	Gbass		max. boost/cut	±15	±18	±21	dB
	Treble control range	Gtre		max. boost/cut	±15	±18	±21	dB
	L/R balance	BAL					±0.5	dB

Continued on next page.

No. 7053-4/21

LC75412E, 75412W

Continued from preceding page.

	Parameter	Symbol	Pin Name	Conditions		Ratings		Unit
					min	typ	max
	[Fader Block]
	Input resistance	Rfed	LFIN, RFIN		25	50	100	kΩ
				0dB to –2dB			±0.5	dB
	Step setting error	ATerr		–2dB to –20dB			±1	dB
				–20dB to –30dB			±2	dB
				–30dB to –60dB			±3	dB
	L/R balance	BAL					±0.5	dB
	[General]
	Total harmonic distortion	THD (1)	VIN = 0dBV, f = 1 kHz			0.004	0.01	%
		THD (2)	VIN = –10dBV, f = 10 kHz			0.006	0.01	%
	Input crosstalk	CT	VIN = 1Vrms, f = 1 kHz		80	88		dB
	L/R crosstalk	CT	VIN = 1Vrms, f = 1 kHz		80	88		dB
		Vomin (1)	VIN = 1Vrms, f = 1 kHz		80	88		dB
	Maximum attenuated output	Vomin (2)	VIN = 1Vrms, f = 1 kHz		90	95		dB
			INMUTE, fader –∞
	Output noise voltage	VN (1)	Flat overall, IHF-A filter			5	10	µV
		VN (2)	Flat overall, 20 to 20 kHzBPF			7	15	µV
	Current drain	IDD				55	60	mA
	Input high-level current	IIH	CL, DI, CE, VIN = 9 V				10	µA
	Input low-level current	IIL	CL, DI, CE, VIN = 0 V		–10			µA
	Maximum input voltage	VCL	THD = 1%, RL = 10 kΩ		2.3	2.5		Vrms
			flat overall, fIN = 1 kHz
	Common-mode rejection ratio	CMRR	VIN = 0 dB, f = 1 kHz			70		dB

Control Timing and Data Format

To control the LC75412E and LC75412W input specified serial data to the CE, CL, and DI pins. The data configuration consists of a total of 52 bits broken down into 8 address bits and 44 data bits.

CE

DI B0 B1 B2 B3 A0 A1 A2 A3 D0 D1 D2 D3 D4 D5 D38 D39 D40 D41 D42 D43

CL

CE	1 s 1 s 1 s	1 s
	min min min	min
	1 s
CL	min

DI

1 s min ≤ TDEST

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LC75412E, 75412W

Address code (B0 to A3)

The LC75412E and 75412W use 8-bit address code and can be used in common with ICs that support SANYO’s CCB serial bus.

Address Code

(LSB)	B0	B1	B2	B3	A0	A1	A2	A3	(81HEX)
	1	0	0	0	0	0	0	1

Control code allocation

Input Switching Control

D0	D1	D2	Setting	Setting
0	0	0	L1 (R1)
1	0	0	L2 (R2)
0	1	0	L3 (R3)
1	1	0	L4 (R4)
0	0	1	L5 (R5)
1	0	1	L6 (R6)
D3	Bit for IC testing: Normally set to 0

Input Gain Control

D4	D5	D6	D7	Operation
0	0	0	0	0dB
1	0	0	0	+1.25dB
0	1	0	0	+2.50dB
1	1	0	0	+3.75dB
0	0	1	0	+5.00dB
1	0	1	0	+6.25dB
0	1	1	0	+7.50dB
1	1	1	0	+8.75dB
0	0	0	1	+10.0dB
1	0	0	1	+11.25dB
0	1	0	1	+12.5dB
1	1	0	1	+13.75dB
0	0	1	1	+15.0dB
1	0	1	1	+16.25dB
0	1	1	1	+17.5dB
1	1	1	1	+18.75dB

No. 7053-6/21

						LC75412E, 75412W
Volume Control (0 to –40dB)
D8	D9	D10	D11	D12	D13		D14	D15	Operation
0	0	0	0	0	0		0	0	0dB
1	0	0	0	0	0		0	0	–1dB
0	1	0	0	0	0		0	0	–2dB
1	1	0	0	0	0		0	0	–3dB
0	0	1	0	0	0		0	0	–4dB
1	0	1	0	0	0		0	0	–5dB
0	1	1	0	0	0		0	0	–6dB
1	1	1	0	0	0		0	0	–7dB
0	0	0	1	0	0		0	0	–8dB
1	0	0	1	0	0		0	0	–9dB
0	1	0	1	0	0		0	0	–10dB
1	1	0	1	0	0		0	0	–11dB
0	0	1	1	0	0		0	0	–12dB
1	0	1	1	0	0		0	0	–13dB
0	1	1	1	0	0		0	0	–14dB
1	1	1	1	0	0		0	0	–15dB
0	0	0	0	1	0		0	0	–16dB
1	0	0	0	1	0		0	0	–17dB
0	1	0	0	1	0		0	0	–18dB
1	1	0	0	1	0		0	0	–19dB
0	0	1	0	1	0		0	0	–20dB
1	0	1	0	1	0		0	0	–21dB
0	1	1	0	1	0		0	0	–22dB
1	1	1	0	1	0		0	0	–23dB
0	0	0	1	1	0		0	0	–24dB
1	0	0	1	1	0		0	0	–25dB
0	1	0	1	1	0		0	0	–26dB
1	1	0	1	1	0		0	0	–27dB
0	0	1	1	1	0		0	0	–28dB
1	0	1	1	1	0		0	0	–29dB
0	1	1	1	1	0		0	0	–30dB
1	1	1	1	1	0		0	0	–31dB
0	0	0	0	0	1		0	0	–32dB
1	0	0	0	0	1		0	0	–33dB
0	1	0	0	0	1		0	0	–34dB
1	1	0	0	0	1		0	0	–35dB
0	0	1	0	0	1		0	0	–36dB
1	0	1	0	0	1		0	0	–37dB
0	1	1	0	0	1		0	0	–38dB
1	1	1	0	0	1		0	0	–39dB
0	0	0	1	0	1		0	0	–40dB

No. 7053-7/21