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Ordering number : EN5056A
CMOS LSI
LC75395E
Single-Chip Electronic Volume Control System
Overview
The LC75395E is an electronic volume control that provides volume, balance, five-band equalization and input switching functions. These functions are controlled from serial input data.
Package Dimensions
unit: mm 3159-QFP64E
[LC75395E]
Functions
* Volume control: The volume control provides 25 attenuation positions: from 0 dB to -17.5 dB in 1.25 dB steps, from -17.5 dB to -25 dB in 2.5 dB steps, from -25 dB to -36.25 dB in 3.75 dB steps and with settings for -41.25 dB, -50 dB, -60 dB and -. A balance function can be implemented by controlling the left and right channels independently. * Equalizer: The equalizer function supports 10 dB control in 2 dB steps in each of the five bands. Of the five bands, four provide peaking characteristics, and one provides shelving characteristics. * Selector: The selector function selects one of four inputs for each of the left and right channels. An arbitrary amplification level can be set for each input signal using external components. * Serial data input: All controls can be set from serial input data (CCB format)
SANYO: QIP64E
Features
* On-chip buffer amplifiers to minimize the number of external components * Silicon-gate CMOS process for minimal switching noise * On-chip circuit to generate the VDD/2 reference voltage
* 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.
Specifications
Absolute Maximum Ratings at Ta = 25C, VSS = 0 V
Parameter Maximum supply voltage Maximum input voltage Allowable power dissipation Operating temperature Storage temperature Symbol VDD max VIN max Pd max Topr Tstg VDD CL, DI, CE, L1 to L4, R1 to R4, LTIN, RTIN, LVRIN, RVRIN Ta 85C Conditions Ratings 12 VSS - 0.3 to VDD + 0.3 310 -30 to +85 -40 to +125 Unit V V mW C C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
63096HA (OT)/71895HA (OT) No. 5056-1/17
LC75395E Allowable Operating Ranges at Ta = 25C, VSS = 0 V
Parameter Supply voltage Input high level voltage Input low level voltage Input voltage amplitude Input pulse width Setup time Hold time Operating frequency Symbol VDD VIH VIL VIN toW tSETUP tHOLD fopg VDD CL, DI, CE CL, DI, CE CL, DI, CE, L1 to L4, R1 to R4, LTIN, RTIN, LVRIN, RVRIN CL CL, DI, CE CL, DI, CE CL Conditions min 6.0 4.0 VSS VSS 1.0 1.0 1.0 500 typ max 11.0 VDD 1.0 VDD Unit V V V Vp-p s s s kHz
Electrical Characteristics at Ta = 25C, VDD = 10 V, VSS = 0 V
Parameter [Input Block] Input resistance Clipping level Output load resistance [Volume Control Block] Input resistance [Equalizer Control Block] Control range Step resolution Internal feedback resistance [Overall Characteristics] Total harmonic distortion Crosstalk Output at maximum attenuation THD (1) THD (2) CT VO min VN (1) Output noise voltage VN (2) Current drain Input high level current Input low level current IDD IIH IIL VIN = 1 Vrms, f = 1 kHz, with all controls flat overall VIN = 1 Vrms, f = 20 kHz, with all controls flat overall VIN = 1 Vrms, f = 1 kHz, with all controls flat overall Rg = 1 k VIN = 1 Vrms, f = 1 kHz, with the main volume control at - With all controls flat overall (IHF-A), Rg = 1 k With all controls flat overall (DIN-AUDIO), Rg = 1 k VDD - VSS = 11 V CL, DI, CE: VIN = 11 V CL, DI, CE: VIN = 0 V -10 0.0033 0.012 86 -84 3.9 5.4 25 33 10 % % dB dB V V mA A A Geq Estep Rfeed Max, boost/cut 8 1 17 10 2 28 12 3 39 dB dB k Rin LVRIN, RVRIN 21 35 49 k Rin Vcl RL L1 to L4, R1 to R4 LSELO, RSELO: THD = 1.0% LSELO, RSELO 3 1 2.65 M Vrms k Symbol Conditions min typ max Unit
Input Amplifier Characteristics at Ta = 25C, VDD - VSS = 10 V
Parameter Input offset voltage Input offset current Open-loop voltage gain 0 dB bandwidth Allowable load resistance Symbol VIO IIO AO fT RL 3 VSS VIN VDD Conditions min -10 10 80 2.5 typ max +10 Unit mV nA dB MHz k
No. 5056-2/17
LC75395E Equivalent Circuit Block Diagram and Sample Application Circuit
A03544
Note: If at all possible, use bipolar capacitors for all capacitors that do not have a polarity specified.
No. 5056-3/17
LC75395E Test Circuits 1. Total Harmonic Distortion
A03545
No. 5056-4/17
LC75395E Test Circuits 2. Output Noise Voltage
A03546
No. 5056-5/17
LC75395E Test Circuits 3. Crosstalk
A03547
No. 5056-6/17
LC75395E Pin Assignment
A03548
No. 5056-7/17
LC75395E Pin Functions
Pin No. 12 11 10 37 38 39 9 8 7 40 41 42 6 5 4 43 44 45 3 2 1 46 47 48 Symbol LF1C1 LF1C2 LF1C3 RF1C1 RF1C2 RF1C3 LF2C1 LF2C2 LF2C3 RF2C1 RF2C2 RF2C3 LF3C1 LF3C2 LF3C3 RF3C1 RF3C2 RF3C3 LF4C1 LF4C2 LF4C3 RF4C1 RF4C2 RF4C3 The right channel F4 band control block. These are external capacitor connections. The left channel F4 band control block. These are external capacitor connections.
A03549
Function The left channel F1 band control block. These are external capacitor connections.
Note
The right channel F1 band control block. These are external capacitor connections.
The left channel F2 band control block. These are external capacitor connections.
The right channel F2 band control block. These are external capacitor connections.
The left channel F3 band control block. These are external capacitor connections.
The right channel F3 band control block. These are external capacitor connections.
13 36
LTIN RTIN
Tone control inputs These must be driven by low-impedance circuits.
A03550
14 35
LSELO RSELO
Input selector outputs
A03551
64 49
LF5 RF5
F5 band control block. These are external capacitor connections.
A03552
21 19 17 16 28 30 32 33 57 22, 26 27
L1 L2 L3 L4 R1 R2 R3 R4 VDD VSS AVSS Power supply Internal logic system ground Internal operational amplifier ground Signal inputs
A03553
Continued on next page. No. 5056-8/17
LC75395E
Continued from preceding page.
Pin No. Symbol Function Note
56
Vref
VDD/2 voltage generation block. A capacitor must be inserted between Vref and VSS to suppress power supply ripple.
A04449
63 50
LVref RVref
Common pins for the volume control, tone control and input switching blocks. Since capacitors inserted between LVref (or RVref) and VSS become the residual resistance when the volume control is set at maximum attenuation, the values of these capacitors must be chosen carefully. A voltage higher than VDD must never be applied.
A03555
15 34
LINVIN1 RINVIN1
Inverting inputs for the operational amplifiers that set the input gain.
A03556
62 51
LINVIN2 RINVIN2
Inverting inputs for the graphic equalizer operational amplifiers. Unnecessary frequency bands can be excluded and oscillation prevented by inserting arbitrary capacitors between the INVIN2 and TOUT pins.
A03557
61 52
LTOUT RTOUT
Tone control outputs
A03558
60 53
LVRIN RVRIN
Volume control inputs These must be driven by low-impedance circuits.
A03559
58 55
LVROUT RVROUT
Volume control outputs
A03560
Chip enable 25 CE Data is read into the internal latches and the analog switches operate when this pin goes from high to low. Data transfer is enabled when this pin is high.
A03561
24 23 18 20 29 31 54 59
DI CL NC NC NC NC NC NC
Serial data and clock connections for chip control
Unused pins
No. 5056-9/17
LC75395E Input Block Internal Equivalent Circuit Diagram
A03562
Volume Control Block Internal Equivalent Circuit Diagram
A03563
No. 5056-10/17
LC75395E Equalizer Control Block Internal Equivalent Circuit (bands F1 to F4)
A03564
External Capacitor Calculations The LC75395E supports four bands with peaking characteristics and one band with shelving characteristics. 1. Peaking Characteristics (bands F1 to F4) The external capacitor functions as the structural element of a simulated inductor. The equivalent circuit and the calculations required to achieve the desired center frequency are shown below. * Equivalent circuit for the simulated inductor
A03565
No. 5056-11/17
LC75395E * Sample Calculation Specifications 1) Center frequency FO = 107 Hz 2) Q at maximum boost: Q+10 dB = 0.8 Derive the sharpness (QO) of the simulated inductor itself. QO = (R1 + R4)/R1 x Q+10 dB 4.270 Derive C1. C1 = 1/2FOR1QO 0.536 (F) Derive C2. C2 = QO/2FOR2 0.021 (F) * Sample values for C1 and C2
Center frequency FO (Hz) 107 340 1070 3400 C1 (F) 0.536 0.169 0.054 0.017 C2 (F) 0.021 6663 p 2117 p 666 p
2. Shelving Characteristics (band F5) To achieve 10 dB (in 2 dB steps) at the target frequency, use an external capacitor C3 which has an impedance of 650 .
No. 5056-12/17
LC75395E Control System Timing and Data Format The LC75395E is controlled by inputting stipulated data to the CE, CL, and DI pins. The data consists of a total of 40 bits, of which 8 bits are address and 32 bits are data.
A03566
No. 5056-13/17
LC75395E
A03730
A03731
No. 5056-14/17
LC75395E
A03732
A03733
A03734
A03735
No. 5056-15/17
LC75395E
A03736
A03737
A03738
A03739
Usage Notes 1. The states of the internal analog switches are undefined when power is first applied. Muting should be applied externally until control data has been transferred and stored. 2. The signal lines for the CL, DI and CE pins should either be covered by the pattern ground or be formed from shielded cable to prevent the high-frequency digital signals transmitted over these lines from entering the analog system.
No. 5056-16/17
LC75395E
s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. 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 November, 1997. Specifications and information herein are subject to change without notice. No. 5056-17/17

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