 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Ordering number : EN5002A CMOS LSI LC75383E Electronic Volume Control for Car Audio Systems Overview The LC75383E is an electronic volume control that provides volume, balance, fader, bass/treble, input switching and input level controls. The LC75383E supports all these functions while requiring a minimum number of external components. Package Dimensions unit: mm 3159-QFP64E [LC75383E] Features * Volume: 0 dB to -79 dB (in 1 dB steps) and -; 81 positions. A balance function can be implemented using the LC75383E independent left and right volume control functions. * Fader: The rear channels or the front channels can be attenuated over 16 positions: from 0 dB to -20 dB in 2 dB steps, from -20 dB to -25 dB in one 5 dB step, from -25 dB to -45 dB in 10 dB steps, -60 dB, and - for a total of 16 positions. * Bass/treble: The LC75383E supports 21 position bass and treble controls using external capacitors. * Input selector: The LC75383E can select one of four L/R inputs. The selected input signal can be amplified from 0 dB to +18 dB in 6 dB steps. * Built-in operational amplifiers mean that few external components are required. * Silicon gate process for minimal switching noise. * All controls can be set from serial input data (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. SANYO: QIP64E 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, LTIN, RTIN, L10dBIN, R10dBIN, L1dBIN, R1dBIN, LFIN, RFIN, L1 to L4, R1 to R4 Ta 85C Conditions Ratings 12 VSS - 0.3 to VDD + 0.3 310 -40 to +85 -50 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, 110-8534 JAPAN N2095HA (OT)/62895HA (OT) No. 5002-1/17 LC75383E 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 LTIN, RTIN, L10dBIN, R10dBIN, L1dBIN, R1dBIN, LFIN, RFIN, L1 to L4, R1 to R4 CL CL, DI, CE CL, DI, CE CL Conditions min 6.0 4.0 VSS VSS 1 1 1 500 typ max 11.0 VDD 1.0 VDD Unit V V V Vp-p s s s kHz Electrical Characteristics at Ta = 25C, VDD = 9 V, VSS = 0 V Parameter [Input Block] Input resistance Clipping level Output load resistance Minimum input gain Maximum input gain Step resolution [Volume Block] Input resistance Step resolution Step error [Fader Volume Block] Input resistance Rfed LFIN, RFIN Step = 0 to -20 dB Step resolution ATstep Step = -20 to -25 dB Step = -25 to -45 dB Step error Output load resistance [Bass/Treble Control Block] Control range Step resolution Internal feedback resistance [Overall] Total harmonic distortion Crosstalk Maximum attenuation THD (1) THD (2) CT Vo min VN (1) VN (2) Output noise voltage VN (3) VN (4) VN (5) Current drain Input high level current Input low level current IDD IIH IIL VIN = 300 mVrms, f = 1 kHz, all controls flat overall VIN = 300 mVrms, f = 20 kHz, all controls flat overall VIN = 1 Vrms, f = 1 kHz, all controls flat overall, Rg = 1 k VIN = 1 Vrms, f = 1 kHz, main volume at - All controls flat overall (IHF-A), Rg = 1 k All controls flat overall (DIN-AUDIO), Rg = 1 k All controls flat overall (NO-FILTER), Rg = 1 k Gv = +18 dB (IHF-A), Rg = 1 k Bass = max. boost, treble = max. boost (IHF-A), Rg = 1 k VDD - VSS = 11 V CL, DI, CE, VIN = 9 V CL, DI, CE, VIN = 0 V -10 60 -65 0.005 0.008 84.5 -80 5.2 7.2 9.2 23 48 28 12 16 20 50 120 33 10 0.01 0.02 % % dB dB V V V V V mA A A Gbass Gtre Bstep Rfeed Max. boost/cut 15 0.7 46 17 1.7 76 19 2.7 107 dB dB k ATerr RL Step = 0 to -40 dB, -40 to -60 dB LFOUT, LROUT, RFOUT, RROUT -2 10 12 20 2 5 10 0 +2 28 k dB dB dB dB k Rv10 Rv1 ATstep ATerr Step = 0 to -40 dB, -40 to -60 dB -1 L10dBIN, R10dBIN: 10 dB steps L1dBIN, R1dBIN: 1 dB steps 21 6 35 10 1 0 +1 49 14 k k dB dB Rin Vcl RL Gin min Gin max Gstep L1, L2, L3, L4, R1, R2, R3, R4 LSELO, RSELO: THD = 1.0% LSELO, RSELO 10 -2 +16.0 0 +18.0 +6.0 +2 +20.0 1 2.35 M Vrms k dB dB dB Symbol Conditions min typ max Unit No. 5002-2/17 LC75383E Equivalent Circuit Block Diagram No. 5002-3/17 LC75383E Electrical Characteristics Test Circuits 1. Total Harmonic Distortion No. 5002-4/17 LC75383E 2. Output Noise Voltage No. 5002-5/17 LC75383E 3. Crosstalk No. 5002-6/17 LC75383E Pin Assignment Pin Functions Pin No. Symbol Function Note 58 60 55 53 LROUT LFOUT RROUT RFOUT Fader block outputs. Only the front or rear channels are attenuated. The left and right attenuations are identical. Since these are operational amplifier outputs, the output is low impedance. 61 52 LFIN RFIN Fader block inputs. Must be driven by low impedance circuits. 64 49 LVref RVref Common connections for the main volume, fader block, tone block and gain control block. 56 Vref Capacitors of about 100 F must be inserted between Vref and AVSS (VSS) to reduce power supply ripple in the VDD/2 voltage generation block. Continued on next page. No. 5002-7/17 LC75383E Continued from preceding page. Pin No. Symbol Function Note 6 43 L1dBOUT R1dBOUT Main volume 1 dB step attenuator outputs 8 41 L1dBIN R1dBIN Main volume 1 dB step attenuator inputs Must be driven by low impedance circuits. 9 40 L10dBOUT R10dBOUT Main volume 10 dB step attenuator outputs 11 38 L10dBIN R10dBIN Main volume 10 dB step attenuator inputs Must be driven by low impedance circuits. 62 51 LTOUT RTOUT Tone control outputs 4 3 2 45 46 47 LT1 LT2 LT3 RT1 RT2 RT3 Connections for the capacitors that form the low frequency (bass) tone control filters Low frequency compensation capacitors must be connected between T1 and T2 and between T2 and T3. 1 48 LT4 RT4 Connections for the capacitors that form the high frequency (treble) tone control filters High frequency compensation capacitors must be connected between the T4 pins and Vref. 63 50 LT5 RT5 Inverting inputs for the operational amplifiers that form the tone control circuit filters Unnecessary frequencies can be excluded by inserting capacitors of desired values between the T5 and TOUT pin pairs. 5 44 LTIN RTIN Tone control circuit inputs Must be driven by low impedance circuits. Continued on next page. No. 5002-8/17 LC75383E Continued from preceding page. Pin No. 57 Symbol VDD Power supply Function Note 27 A. VSS Ground for internal operational amplifiers 22, 26 VSS Ground for the internal logic system 21 19 17 15 28 30 32 34 L1 L2 L3 L4 R1 R2 R3 R4 Audio signal inputs 12 37 LSELO RSELO Input selector outputs 25 CE Chip enable. Data is written to the internal latch when this pin goes from high to low. The analog switches operate at that point also. Data transfer is enabled when this pin is high. 24 23 DI CL Serial data and clock pins for IC control 13 36 LV1 RV1 Test pins. These pins must be left open. 7, 10, 14, 16, 18, 20, 29, 31, 33, 35, 39, 42, 54, 59 NC No connection pins. These pins must be left open or tied to VSS. No. 5002-9/17 LC75383E Equivalent Circuit Details Input Block Equivalent Circuit 10 dB Step Volume Control Equivalent Circuit No. 5002-10/17 LC75383E 1 dB Step Volume Control Equivalent Circuit Tone Block Equivalent Circuit No. 5002-11/17 LC75383E Sample Calculation for the Tone Block External Capacitors The external capacitors used with the LC75383E are the structural components in semiconductor inductors, i.e., simulated inductors. Here we present the equivalent circuit and the formulas required to acquire the desired center frequency. 1. Semiconductor inductor equivalent circuit 2. Sample calculation Specifications: 1) Center frequency: Fo = 100 Hz 2) Q at maximum boost: Qmax = 1.05 * Derive the sharpness, Qo, of the semiconductor inductor itself Qo = (RT4 + Rfeed) x Qmax 2.6481 RT4 * Calculate C1 C1 = 1/2FoRT4Qo 0.60 (F) * Calculate C2 C2 =Qo/2FoRT3 0.014 (F) Note: See the tone block equivalent circuit for the internal resistance. Technique for Reducing Noise in the Tone Circuit Output The output noise can be improved by about 6 dB by providing an external impedance at resonance of Zo and adding the capacitor C3 with a value of about 100 pF. An even larger noise reduction effect can be acquired by using a low noise operational amplifier in the external circuit. No. 5002-12/17 LC75383E Fader Volume Control Equivalent Circuit When the main volume 1dBSTEP setting is set to the data value for -, S1 and S2 will be open and at the same time S3 and S4 will be on. No. 5002-13/17 LC75383E Control System Timing and Data Format The LC75383E is controlled by inputting the stipulated serial data to the CE, CL and DI pins. The data structure consists of a total of 40 bits, of which 8 bits are address and 32 bits are setting data. No. 5002-14/17 LC75383E Sample Application Circuit 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. 5002-15/17 LC75383E No. 5002-16/17 LC75383E 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 February, 1997. Specifications and information herein are subject to change without notice. No. 5002-17/17 |
Price & Availability of LC75383E
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |