LC75392 Sanyo Semiconductor Corporation, LC75392 Datasheet

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LC75392

Manufacturer Part Number
LC75392
Description
Single-chip electronic volume control system
Manufacturer
Sanyo Semiconductor Corporation
Datasheet
Ordering number : EN5681
Overview
The LC75392 (DIP-30SD) and the LC75392M (MFP-
30S) are electronic volume control ICs that provide input
and output switching, volume, and tone control functions
controlled by data transferred over a serial interface.
Functions
• Input and output switching: Four inputs and outputs can
• Volume control: A balance function can be implemented
•Tone controls: Internal switches are provided to select
Features
Serial data interface: Support for control and
communication in the CCB format.
Specifications
Absolute Maximum Ratings
Maximum supply voltage
Maximum input voltage
Allowable power dissipation
Operating temperature
Storage temperature
be switched independently.
by controlling the left and right levels independently.
Each channel can be set to 0 to –20 dB in 2 dB steps,
–20 to –32 dB in 3 dB steps, –32 to –52 dB in 4 dB
steps, –52 dB to –70 dB in 4.5 dB steps, and –∞.
between four sets of frequency characteristics. A buffer
function can be implemented using external
components.
• 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.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
Parameter
at Ta = 25°C, V
V
V
Pd max
Symbol
Single-Chip Electronic Volume Control System
DD
IN
Topr
Tstg
max
max
V
CL, DI, CE, L1, L2, L3, L4, R1, R2, R3, R4
Ta ≤ 85°C
SS
DD
= 0 V
Package Dimensions
unit: mm
3196-DIP30SD
unit: mm
3216-MFP30S
Conditions
LC75392, 75392M
[LC75392M]
[LC75392]
V
SS
73097HA(OT) No. 5681-1/12
– 0.3 to V
Ratings
–50 to +125
SANYO: DIP30SD
–40 to +85
SANYO: MFP30S
DD
+ 0.3
160
CMOS LSI
12
Unit
mW
°C
°C
V
V

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LC75392 Summary of contents

Page 1

... Ordering number : EN5681 Overview The LC75392 (DIP-30SD) and the LC75392M (MFP- 30S) are electronic volume control ICs that provide input and output switching, volume, and tone control functions controlled by data transferred over a serial interface. Functions • Input and output switching: Four inputs and outputs can be switched independently. • ...

Page 2

... Electrical Characteristics 25°C, V Parameter [Input Block] Input resistance [Overall] Total harmonic distortion Crosstalk Output at maximum attenuation Output noise voltage Current drain Input high-level current Input low-level current Equivalent Circuit Block Diagram LC75392, 75392M = Symbol Conditions CL, DI ...

Page 3

... Test Circuit Total Harmonic Distortion Use circuit constants identical to those of the right channel. THD in LC75392, 75392M SG out Distortion analyzer No. 5681-3/12 ...

Page 4

... Output Noise Voltage Use circuit constants identical to those of the right channel. LC75392, 75392M Noise meter No. 5681-4/12 ...

Page 5

... Crosstalk Use circuit constants identical to those of the right channel. LC75392, 75392M Volt meter No. 5681-5/12 ...

Page 6

... LTOUT 3 Tone control circuit outputs RTOUT 28 LTCOM 4 Tone control circuit operational amplifier inverting inputs RTCOM 27 LT1 8 LT2 7 LT3 6 LT4 5 Connections for the tone control pattern external constants RT1 23 RT2 24 RT3 25 RT4 26 LC75392, 75392M Function Top view Circuit Continued on next page. No. 5681-6/12 ...

Page 7

... Serial data and clock inputs for device control DI 15 • Chip enable • Data is read into an internal latch and the analog switches operate when this CE 16 pin goes from high to low. Data transfers are enabled when this pin is high. LC75392, 75392M Function Circuit No. 5681-7/12 ...

Page 8

... Volume Control Equivalent Circuit LC75392, 75392M No. 5681-8/12 ...

Page 9

... Control System Timing and Data Format To control the LC75392, applications must apply data in the stipulated format to the CE, CL, and DI pins. This data consists of 32 bits, of which 8 bits are the address and 24 bits are the control data. Don’t care Volume control data Note: The bits D20, D21, and D22 are IC test mode control data ...

Page 10

... We recommend that applications use a sequence of several smaller steps to approach the final setting when changing the value of the volume control setting significantly. For example, the sequence shown below should be used when changing from –∞. This can reduce switching noise. Example –10 dB –20 dB LC75392, 75392M –40 dB –70 dB –∞ No. 5681-10/12 ...

Page 11

... Overall Frequency, f – Hz THD vs. Input Level Characteristics 80 kHz low-pass filter Overall Buffer mode off Flat Input level, V – dBV IN LC75392, 75392M Tone Control Characteristics Overall THD vs. Power-Supply Voltage Characteristics 80 kHz low-pass filter Overall Buffer mode off Flat Power-supply voltage, V Frequency, f – Hz – ...

Page 12

... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of July, 1997. Specifications and information herein are subject to change without notice. LC75392, 75392M No. 5681-12/12 ...

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