M51132L/FP 2ch Electronic Volume•Balance REJ03F0026-0100Z Rev.1.0 Sep.05.2003 Description The M51132 is a VCA (Voltage Controlled Amplifier) IC developed as an electronic volume control for audio-visual equipment. The IC is used to process small analog signals at the stage before power amplifier. Right/left independent volume control or right/left simultaneous volume control can be selected by DC voltages. Its built-in pass through function, in combination with an ALC amplifier, offers the capability of automatic level control. Features • Two control modes can be selected. (Left/right independent volume control mode or left/right simultaneous volume + balance control mode.) • Pass through switch is included to output the input signal as it is, irrespective of the volume/balance control voltages. • Shock noise reduction pin is provided to reduce pass through switch on/off shock noise. • Built-in reference supply voltage circuit: output current 10 mA (Typ.) • Maximum input: 3.4 Vrms (Typ.) (f = 1 kHz, THD = 1%) • Low distortion: 0.005% (Typ.) • Good channel separation: 102 dB (Typ.) (f = 1 kHz, Vo = 2 Vrms, IHF-A) Recommended Operating Conditions • Supply voltage range: Vcc = 8 to 15 V • Rated supply voltage: Vcc = 12 V System Configuration Rev.1.0, Sep.05.2003, page 1 of 11 M51132L/FP Pin Configuration IC Internal Block Diagram (M51132L) Rev.1.0, Sep.05.2003, page 2 of 11 M51132L/FP Pin Description Pin No. Pin Name Function 1 Vcc DC 8 to 15 V is applied (rated voltage 12 V) Typical DC Voltage 2 3 Input 1 Output 1 Maximum input 3.4 Vrms (Typ.) 5.5 V 4.8 V 4 Maximum output current 10 mA (Typ.) built-in short circuit protection circuit 5.2 V 5 Reference supply voltage output Filter 6 7 No connection GND Can be used for wire repeater to GND, etc. 8 Volume/volume 1 control 9 Pass through switch shock noise reduction Left/right simultaneous volume or channel 1 volume is controlled by this value in the range of 0 to 5.2 V DC. 5.2 V for pass through Transit noise to the ear is softened by slowly switching between pass through and VCA with time constant when and 0 V for VCA the pass through switch is turned on/off. The time constant is determined by externally connected capacitor. T(sec) = 1.2 × C × 20k 10 11 Balance/volume 2 control Pass through/VCA switch Balance or channel 2 volume is controlled with 0 to 5.2 V Operates as VCA with 0 V, and passes through the input to output with 5.2 V 12 Control mode switch Operates as channel 1 volume at pin 8 and as channel 2 volume at pin 10 with 0 V. Operates as channel 1 and channel 2 simultaneous volume at pin 8 and as balance at pin 10 with 5.2 V. 13 Output 2 14 Input 2 12 V 4.8 V Maximum input 3.4 Vrms (Typ.) 5.5 V Absolute Maximum Ratings (Ta = 25°C, unless otherwise noted) Item Symbol Ratings Unit Conditions Supply voltage Circuit current Vcc Icc 15.5 40 V mA Quiescent Power dissipation Thermal derating Pd Kθ 800(L)/550(FP) 8.0(L)/5.5(FP) mW mW/°C When mounted on PC board Ta ≥ 25°C Operating temperature Storage temperature Topr Tstg –20 to +75 –40 to +125 °C °C Rev.1.0, Sep.05.2003, page 3 of 11 M51132L/FP Electrical Characteristics (Ta = 25°C, Vcc = 12 V, f = 1 kHz, Vi = 1 Vrms, Volume Max, unless otherwise noted) Item Symbol Min. Typ. Max. Unit Test Conditions Circuit current Attenuation Icco ATTo 9 –2 17 0 30 +2 mA dB In quiescent state, volume: min Att-∞ CB — –2 –105 0 –85 +2 dB dB Vi = 2 Vrms, IHF-A, volume: min Channel balance Total harmonic distortion Input resistor THD Ri — 5.0 0.01 150 0.1 — % kΩ 15 kHz, LPF Balance attenuation Output noise voltage BAL Nomin — — –105 4.8 –85 10 dB µVrms Vi = 2 Vrms, IHF-A Rg = 10 kΩ, in quiescent state, IHF-A, volume: min Maximum input voltage Nomax Vimax — 2 9 3.4 20 — µVrms Vrms Rg = 10 kΩ, in quiescent state, IHF-A THD = 1%, volume: center Maximum output voltage Crosstalk Vomax CT 2 — 3.4 –102 — –80 Vrms dB THD = 1% Rg = 0Ω, Vi = 2 Vrms, IHF-A Pass through voltage gain Pass through channel balance GVP CBP –1.2 –2 +0.8 0 +2.8 +2 DB dB Volume: min Volume: min Notes: 1. The volume max is the condition in which the same voltage as Vr is applied to pin 8. 2. The volume center is the condition in which the same voltage as Vr/2 is applied to pin 8. 3. The volume min is the condition in which pin 8 is connected to GND. I/O Interface (M51132L) Note: All resistors, voltages, and currents are shown in typical values. Rev.1.0, Sep.05.2003, page 4 of 11 M51132L/FP Typical Characteristics Rev.1.0, Sep.05.2003, page 5 of 11 M51132L/FP Rev.1.0, Sep.05.2003, page 6 of 11 M51132L/FP Test Circuit (M51132L) Rev.1.0, Sep.05.2003, page 7 of 11 M51132L/FP Switch Condition and Test Method Switch Item Symbol S1-1 S1-2 S2 S3 S4 S5 S6 S7 S8-1 S8-2 Test Method Circuit current Icco 2 2 3 3 2 2 1 2 1 1 Measure the current flowing to pin (1) in quiescent state Attenuation ATTo 1 1 1 1 2 2 1/2 2 1 1 Att-∞ 1 1 3 3 2 2 1/2 1 1 1 Obtain from the equation ATT(dB) = 20 log(Vo/Vi) ATT-∞ is IHF-A in 1→2 2 1 1 CB(dB) = ATTch1 – ATTch2 1/2 2 1 1 15 kHz LPF in 1 2 1→2 1→2 Given the output as Vo1 when S8→1 and the output as Vo2 when S8→2, Ri(kΩ) = 150/(Vo1/Vo2 – 1) 2 1 2 Channel balance CB 1 1 1 1 1 2 2 Total harmonic distortion THD 1 1 1 Input resistor Ri 1 1 1 1 1 2 2 1 2 2 1 2 2 2 Balance attenuation BAL 1 1 1 1 Output noise voltage Nomin 2 2 3 3 Nomax 2 2 1 1 2 1 3 2 2 2 2 Maximum output voltage Vomax Crosstalk CT Pass through voltage gain GVP Pass through channel balance CBP 1 1 2 2 1 1 BAL(dB) = 20 log(Vo/Vi) 1/2 1 1 1 IHF-A in 1/2 1 1 1 IHF-A in 1/2 2 1 1 Input signal voltage when the output distortion rate is 1% 1/2 2 1 1 Output signal voltage when the output distortion rate is 1% 1 1 1 1 IHF-A in, CT(dB) = 20 log (Vo(Vrms)/2(Vrms)) 1 2 Vimax 1 2 2 Maximum input voltage 1 1 2 2 1 1 1 1 1 2 2 3 1 1 3 1 1 2 1 1 1 2 2 1 3 3 1 2 1/2 2 1 1 GVP(dB) = 20 log(Vo/Vi) 1 3 3 1 2 1→2 2 1 1 GBP(dB) = GVpch1 – GVpch2 2 Note: If the parameter is separated into two rows. All the switching conditions in the upper row and all the switching conditions in the lower row are measured. Rev.1.0, Sep.05.2003, page 8 of 11 M51132L/FP Application Examples (M51132L) Rev.1.0, Sep.05.2003, page 9 of 11 Rev.1.0, Sep.05.2003, page 10 of 11 1 e D JEDEC Code — SEATING PLANE EIAJ Package Code ZIP14-P-325-1.27 b Weight(g) 0.74 14 Lead Material Cu Alloy A2 A A1 14P5A e1 E A A1 A2 b c D E e e1 L Symbol c Dimension in Millimeters Min Nom Max — — 8.3 — — 0.9 — — 6.3 0.4 0.5 0.6 0.22 0.27 0.34 18.8 19.0 19.2 2.6 2.8 3.0 — — 1.27 — — 2.54 2.8 — — Plastic 14pin 325mil ZIP M51132L/FP Package Dimensions HE Rev.1.0, Sep.05.2003, page 11 of 11 G Z1 E 1 16 EIAJ Package Code SOP16-P-300-1.27 z Detail G e D JEDEC Code — y b 8 9 x Weight(g) 0.2 M F A Detail F A2 Lead Material Cu Alloy L1 MMP c A1 A A1 A2 b c D E e HE L L1 z Z1 x y Symbol e1 b2 e1 I2 b2 Dimension in Millimeters Min Nom Max 2.1 0.2 0.1 0 — 1.8 — 0.5 0.4 0.35 0.25 0.2 0.18 10.2 10.1 10.0 5.4 5.3 5.2 — 1.27 — 8.1 7.8 7.5 0.8 0.6 0.4 — 1.25 — — 0.605 — — 0.755 — — 0.25 — 0.1 — — 0˚ — 8˚ — 0.76 — — 7.62 — — 1.27 — Recommended Mount Pad e Plastic 16pin 300mil SOP I2 16P2N-A M51132L/FP L Sales Strategic Planning Div. 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