SANYO LC75394NE Datasheet
Overview
The LC75394NE is an electronic volume control system
providing control over volume, balance, 5-band equalizer,
and input switching based on serial inputs.
Functions
• Volume control:
The chip provides 25 levels of volume attenuation: in 2dB steps between 0 dB and –20 dB, 3-dB steps between
–20 dB and –32 dB, 4-dB steps between –32 dB and –52
dB, 4.5-dB steps between –52 dB and –70 dB, and – ∞.
Independent control over left and right channels
provides balance control.
• Equalizer:
The chip provides control in 2-dB steps over the range
between +10 dB and –10 dB. Four of the five bands
have peaking equalization; the remaining one, shelving
equalization.
• Selector:
The left and right channels each offer a choice of four
inputs. An external constant determines the
amplification for the input signal.
Features
• Built-in buffer amplifiers reduce the number of external
parts necessary.
• Silicon gate CMOS reduces switching noise.
• Serial data input
—Supports CCB* format communication with the
system controller.
• A built-in reference voltage circuit divides the supply
voltage (VDD) in half.
Package Dimensions
unit: mm
3159-QFP64E
CMOS LSI
Ordering number : EN5466
91096HA (OT)/81095HA (OT) No. 5466-1/17
SANYO: QFP64E
[LC75394NE]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
Single-Chip Electronic Volume Control System
LC75394NE
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS= 0 V
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
DD
max V
DD
12 V
Maximum input voltage V
IN
max
CL, DI, CE, L1 to L4, R1 to R4, LTIN, RTIN, LVRIN, V
SS
– 0.3 to
V
RVRIN V
DD
+ 0.3
Allowable power dissipation Pd max Ta ≤ 85°C 310 mW
Operating temperature Topr –30 to +85 °C
Storage temperature Tstg –40 to +125 °C
• 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.
*
Allowable Operating Ranges at Ta = 25°C, VSS= 0 V
Electrical Characteristics at Ta = 25°C, VDD= 10 V, VSS= 0 V
Input Amplifier Characteristics at Ta = 25°C, VDD– VSS= 10 V
No. 5466-2/17
LC75394NE
Parameter Symbol Conditions min typ max Unit
Supply voltage V
DD
V
DD
6.0 11.0 V
Input high level voltage V
IH
CL, DI, CE 4.0 V
DD
V
Input low level voltage V
IL
CL, DI, CE V
SS
1.0 V
Input voltage amplitude V
IN
CL, DI, CE, L1 to L4, R1 to R4, LTIN, RTIN, LVRIN,
V
SS
V
DD
Vp-p
RVRIN
Input pulse width t
øW
CL 1.0 µs
Setup time t
SETUP
CL, DI, CE 1.0 µs
Hold time t
HOLD
CL, DI, CE 1.0 µs
Operating frequency fopg CL 500 kHz
Parameter Symbol Conditions min typ max Unit
[Input block]
Input resistance Rin L1 to L4, R1 to R4 1 MΩ
Clipping level Vcl LSELO, RSELO: THD = 1.0% 2.65 Vrms
Output load resistance R
L
LSELO, RSELO 3 kΩ
[Volume control block]
Input resistance Rin LVRIN, RVRIN 60 100 140 kΩ
[Equalizer control block]
Control range Geq Max, boost/cut ±8 ±10 ±12 dB
Step resolution Estep 1 2 3 dB
Internal feedback resistance Rfeed 17 28 39 kΩ
[Overall characteristics]
Total harmonic distortion
THD (1) V
IN
= 1 Vrms, f = 1 kHz, with all controls flat overall 0.0033 %
THD (2) V
IN
= 1 Vrms, f = 20 kHz, with all controls flat overall 0.012 %
Crosstalk CT
V
IN
= 1 Vrms, f = 1 kHz, with all controls flat overall,
86 dB
Rg = 1 kΩ
Output at maximum attenuation V
O
min VIN= 1 Vrms, f = 1 kHz, main volume –∞ –90 dB
Output noise voltage
V
N
(1) With all controls flat overall (IHF-A), Rg = 1 kΩ 3.9 µV
V
N
(2) With all controls flat overall (DIN-AUDIO), Rg = 1 kΩ 5.4 µV
Current drain I
DD
VDD– VSS= 11 V 25 33 mA
Input high level current I
IH
CL, DI, CE, VIN= 11 V 10 µA
Input low level current I
IL
CL, DI, CE, VIN= 0 V –10 µA
Parameter Symbol Conditions min typ max Unit
Input offset voltage V
IO
–10 +10 mV
Input offset current I
IO
VSS≤ VIN≤ V
DD
±10 nA
Open-loop voltage gain A
O
80 dB
Width of 0 dB band f
T
2.5 MHz
Allowable load resistance R
L
3 kΩ
Equivalent Block Diagram and Sample Application Circuit
No. 5466-3/17
LC75394NE
Test Circuits
1. Total Harmonic Distortion
No. 5466-4/17
LC75394NE
2. Output Noise Voltage
No. 5466-5/17
LC75394NE
3. Crosstalk
No. 5466-6/17
LC75394NE
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