LM1036MX/NOPB

LM1036 www.ti.com SNAS525C – JAN 1995 – REVISED APRIL 2013 LM1036 Dual DC Operated Tone/Volume/Balance Circuit Check for Samples: LM1036 FEATURES DESCRIPTION • • • • • The LM1036 is a DC controlled tone (bass/treble), volume and balance circuit for stereo applications in car radio, TV and audio systems. An additional control input allows loudness compensation to be simply effected. 1 2 • • Wide Supply Voltage Range, 9V to 16V Large Volume Control Range, 75 dB Typical Tone Control, ±15 dB Typical Channel Separation, 75 dB Typical Low Distortion, 0.06% Typical for An Input Level of 0.3 Vrms High Signal to Noise, 80 dB Typical for an Input Level of 0.3 Vrms Few External Components Required Four control inputs provide control of the bass, treble, balance and volume functions through application of DC voltages from a remote control system or, alternatively, from four potentiometers which may be biased from a zener regulated supply provided on the circuit. Each tone response is defined by a single capacitor chosen to give the desired characteristic. Block and Connection Diagram Figure 1. PDIP and SOIC Packages See Package Numbers NFH0020A or DW0020B 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 1995–2013, Texas Instruments Incorporated LM1036 SNAS525C – JAN 1995 – REVISED APRIL 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) (2) Supply Voltage 16V Control Pin Voltage (Pins 4, 7, 9, 12, 14) VCC Operating Temperature Range 0°C to +70°C −65°C to +150°C Storage Temperature Range Power Dissipation 1W Lead Temp. (Soldering, 10 seconds) (1) (2) 260°C Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. Electrical Characteristics (1) VCC=12V, TA=25°C (unless otherwise stated) Parameter Supply Voltage Range Conditions Min Pin 11 Supply Current Zener Regulated Output Typ 9 35 V 45 mA 5 mA 5.4 Current V Pins 8, 13; f=1 kHz VCC=9V, Maximum Gain Maximum Input Voltage Units 16 Pin 17 Voltage Maximum Output Voltage Max 0.8 Vrms VCC=12V 0.8 1.0 Vrms Pins 2, 19; f=1 kHz, VCC 2V 1.3 1.6 Vrms 20 30 kΩ Gain=−10 dB Input Resistance Pins 2, 19; f=1 kHz Output Resistance Pins 8, 13; f=1 kHz Maximum Gain V(Pin 12)=V(Pin 17); f=1 kHz −2 0 Volume Control Range f=1 kHz 70 75 Gain Tracking f=1 kHz Channel 1–Channel 2 0 dB through −40 dB 1 −40 dB through −60 dB 2 dB Balance Control Range Pins 8, 13; f=1 kHz 1 dB Bass Control Range (2) f=40 Hz, Cb=0.39 μF Treble Control Range (2) Total Harmonic Distortion Channel Separation (1) (2) 2 Ω 20 2 dB dB 3 dB −26 −20 dB V(Pin 14)=V(Pin 17) 12 15 18 dB V(Pin 14)=0V −12 −15 −18 dB f= 16 kHz, Ct,=0.01 μF V(Pin 4)=V(Pin 17) 12 15 18 dB V(Pin 4)=0V −12 −15 −18 dB Gain=0 dB 0.06 0.3 % Gain=−30 dB 0.03 % 75 dB f=1 kHz, VIN=0.3 Vrms f=1 kHz, Maximum Gain 60 The maximum permissible input level is dependent on tone and volume settings. See Application Notes. The tone control range is defined by capacitors Cb and Ct. See Application Notes. Submit Documentation Feedback Copyright © 1995–2013, Texas Instruments Incorporated Product Folder Links: LM1036 LM1036 www.ti.com SNAS525C – JAN 1995 – REVISED APRIL 2013 Electrical Characteristics(1) (continued) VCC=12V, TA=25°C (unless otherwise stated) Parameter Signal/Noise Ratio Conditions Min Unweighted 100 Hz–20 kHz Typ Max Units 80 dB 79 dB Maximum Gain, 0 dB=0.3 Vrms CCIR/ARM (3) Gain=0 dB, VIN=0.3 Vrms 75 Gain=−20 dB, VIN=1.0 Vrms 72 Output Noise Voltage at Minimum Gain CCIR/ARM (3) 10 Supply Ripple Rejection 200 mVrms, 1 kHz Ripple Control Input Currents Pins 4, 7, 9, 12, 14 (V=0V) −0.6 Frequency Response −1 dB (Flat Response 250 35 dB 16 50 μV dB −2.5 μA kHz 20 Hz–16 kHz) (3) Gaussian noise, measured over a period of 50 ms per channel, with a CCIR filter referenced to 2 kHz and an average-responding meter. Submit Documentation Feedback Copyright © 1995–2013, Texas Instruments Incorporated Product Folder Links: LM1036 3 LM1036 SNAS525C – JAN 1995 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics 4 Volume Control Characteristics Balance Control Characteristic Figure 2. Figure 3. Tone Control Characteristic Tone Characteristic (Gain vs Frequency) Figure 4. Figure 5. Tone Characteristic (Gain vs Frequency) Loudness Compensated Volume Characteristic Figure 6. Figure 7. Submit Documentation Feedback Copyright © 1995–2013, Texas Instruments Incorporated Product Folder Links: LM1036 LM1036 www.ti.com SNAS525C – JAN 1995 – REVISED APRIL 2013 Typical Performance Characteristics (continued) Input Signal Handling vs Supply Voltage THD vs Gain Figure 8. Figure 9. Channel Separation vs Frequency Loudness Control Characteristic Figure 10. Figure 11. Output Noise Voltage vs Gain THD vs Input Voltage Figure 12. Figure 13. Submit Documentation Feedback Copyright © 1995–2013, Texas Instruments Incorporated Product Folder Links: LM1036 5 LM1036 SNAS525C – JAN 1995 – REVISED APRIL 2013 www.ti.com Application Notes TONE RESPONSE The maximum boost and cut can be optimized for individual applications by selection of the appropriate values of Ct (treble) and Cb (bass). The tone responses are defined by the relationships: where • • ab=at=0 for maximum bass and treble boost respectively ab=at=1 for maximum cut (1) For the values of Cb and Ct of 0.39 μF and 0.01 μF as shown in the Application Circuit, 15 dB of boost or cut is obtained at 40 Hz and 16 kHz. ZENER VOLTAGE A zener voltage (pin 17=5.4V) is provided which may be used to bias the control potentiometers. Setting a DC level of one half of the zener voltage on the control inputs, pins 4, 9, and 14, results in the balanced gain and flat response condition. Typical spread on the zener voltage is ±100 mV and this must be taken into account if control signals are used which are not referenced to the zener voltage. If this is the case, then they will need to be derived with similar accuracy. LOUDNESS COMPENSATION A simple loudness compensation may be effected by applying a DC control voltage to pin 7. This operates on the tone control stages to produce an additional boost limited by the maximum boost defined by Cb and Ct. There is no loudness compensation when pin 7 is connected to pin 17. Pin 7 can be connected to pin 12 to give the loudness compensated volume characteristic as illustrated without the addition of further external components. (Tone settings are for flat response, Cb and Ct as given in Application Circuit.) Modification to the loudness characteristic is possible by changing the capacitors Cb and Ct for a different basic response or, by a resistor network between pins 7 and 12 for a different threshold and slope. SIGNAL HANDLING The volume control function of the LM1036 is carried out in two stages, controlled by the DC voltage on pin 12, to improve signal handling capability and provide a reduction of output noise level at reduced gain. The first stage is before the tone control processing and provides an initial 15 dB of gain reduction, so ensuring that the tone sections are not overdriven by large input levels when operating with a low volume setting. Any combination of tone and volume settings may be used provided the output level does not exceed 1 Vrms, VCC=12V (0.8 Vrms, VCC=9V). At reduced gain (