Document
Ordering number : ENN6868
CMOS IC
LC75345M
Electronic Volume Control System on-Chip
Overview
The LC75345M is an electronic volume system that can control the volume, balance, 2-band equalizer, super bass, and input switching functions by serial data input.
Functions
• Volume: 0 dB to –78 dB (1-dB step) and –∞ (64 positions) 0 dB to –50 dB (1-dB step), –50 dB to –70 dB (2-dB step), –70-dB to –78 dB (4-dB step) Balance function with separate L/R control
• Treble: ±10-dB control in 2-dB steps is possible. Shelving characteristic.
• Bass: ±10-dB control in 2-dB steps is possible. Peaking characteristics.
• Super bass: +10-dB control in 2-dB steps is possible. Peaking characteristics.
• Selector: 5 input signals can be selected both for L and R
• Input gain: 0 dB to +30 dB (2-dB step) amplification is possible for the input signal.
• General-purpose amp (ATT): 2 on-chip general-purpose amplifiers
Features
• On-chip buffer amplifier cuts down number of external components
• Low switching noise generated by on-chip switch due to use of silicon gate CMOS process
• On-chip reference voltage circuit for analog ground • Controls performed with serial data input (CCB)
Package Dimensions
unit: mm 3263-MFP36SDJ (375 mil)
[LC75345M]
15.2
36 19
1 0.8 (0.8)
0.3 18
0.25
0.1 (2.25) 7.9 2.45max 10.5 0.65
SANYO: MFP36SDJ (375 mil)
• 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
20901RM (OT) No. 6868-1/22
Pin Assignment
DI 1 CE 2 VSS 3 LOPOUT 4 LINM 5 LINP 6 LOUT 7 LSB 8 LBASS2 9 LBASS1 10 LTRE 11 LVRIN 12 LSEL0 13 L5 14 L4 15 L3 16 L2 17 L1 18
LC75345M
LC75345M
36 CL 35 VDD 34 ROPOUT 33 RINM 32 RINP 31 ROUT 30 RSB 29 RBASS2 28 RBASS1 27 RTRE 26 RVRIN 25 RSEL0 24 R5 23 R4 22 R3 21 R2 20 R1 19 Vref
No. 6868-2/22
2.2 µF PA
LINP LINM LOPOUT VSS CE DI CL VDD ROPOUT RINM RINP
2.2 µF PA
Sample Application Circuit
LC75345M
µCOM 6 5 4 3 2 1 36 35 34 33 32
LOUT
7.6 kΩ f0 = 100 Hz
0.1 µF 0.1 µF
7 8
LSB
7.6 kΩ f0 = 100 Hz
LBASS2
9 0.1 µF 0.1 µF
10
LBASS1
2700 pF LTRE 11
LVRIN 12 1 µF
13 LSEL0
LVref Control circuit Logic circuit Control circuit
RVref
CCB interface
ROUT
31
0.1 µF
30
0.1 µF 7.6 kΩ f0 = 100 Hz
RSB
RBASS2
29 0.1 µF 0.1 µF 7.6 kΩ
28 f0 = 100 Hz RBASS1
27 RTRE
2700
pF
26 RVRIN 1 µF
25 RSEL0
1 µF L5 1 µF L4 1 µF L3 1 µF L2 1 µF L1 22 µF Vref 1 µF R1 1 µF R2 1 µF R3 1 µF R4 1 µF R5
14 15 16 17 18 19 20 21 22 23 24
Note: When a general-purpose amp is not used, leave the LINP (RINP) open and connect the LINM (RINM) with the LOPOUT (ROPOUT).
No. 6868-3/22
LC75345M
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter Maximum supply voltage
Maximum input voltage
Symbol VDD max
VIN max
Pin Name
VDD CE, DI, CL
L1 to L5, R1 to R5, LVRIN, RVRIN, LINP, RINP, LINM, RINM
Allowable power dissipation
Pdmax
Operating temperature Storage temperature
Topr Tstg
Conditions
*1 Ta ≤75°C, independent IC
Ratings 10.5
–0.3 to 10.5
VSS – 0.3 to VDD + 0.3
520 –30 to +75 –40 to +125
Unit V V
V
mW °C °C
Allowable Operating Ranges at Ta = –30 to +75°C, VSS = 0 V
Parameter Supply voltage Input high-level voltage Input low-level voltage
Input amplitude voltage
Input pulse width Setup time Hold time Operating frequency
Symbol
Pin Name
VDD VIH
VDD CL, DI, CE
VIL CL, DI, CE
VIN
tøW tsetup thold fopg
L1 to L5, R1 to R5, LVRIN, RVRIN, LINP, RINP, LINM, RINM CL CL, DI, CE CL, DI, CE CL
Conditions
7.5 ≤ VDD ≤ 9 4.5 ≤ VDD ≤ 7.5
min 4.5 2.0 VSS VSS
Ratings typ
VSS
1 1 1
max 9 9
0.8 0.3
Unit
V V V
VDD Vp-p
µs µs µs 500 kHz
Electrical Characteristics at Ta = 25°C, VDD = 8 V, VSS = 0 V Input block
Parameter
Maximum input gain Step resolution
Input resistance Clipping level Output load resistance
Symbol
Pin Name
Ginmax Gstep
Rin
Vcl Rl
L1, L2, L3, L4, L5 R1, R2, R3, R4, R5
LSEL0, RSEL0
LSEL0, RSEL0
Conditions THD = 1.0%, f = 1 kHz
Ratings Unit
min typ max +30 dB +2 dB
50 kΩ
2.50 10
Vrms kΩ
Volume block
Parameter Input resistance
Symbol
Pin Name
Rin LIN, RIN
Conditions
Ratings Unit
min typ m.