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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)
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M51132L/FP
Pin Description
Pin No. 1 2 3 4 5 6 7 8 9 Pin Name Vcc Input 1 Output 1 Reference supply voltage output Filter No connection GND Volume/volume 1 control Pass through switch shock noise reduction Function DC 8 to 15 V is applied (rated voltage 12 V) Maximum input 3.4 Vrms (Typ.) Maximum output current 10 mA (Typ.) built-in short circuit protection circuit Can be used for wire repeater to GND, etc. 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 x C x 20k 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 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. 4.8 V Maximum input 3.4 Vrms (Typ.) 5.5 V 5.5 V 4.8 V 5.2 V 12 V Typical DC Voltage
10 11 12
Balance/volume 2 control Pass through/VCA switch Control mode switch
13 14
Output 2 Input 2
Absolute Maximum Ratings
(Ta = 25C, unless otherwise noted)
Item Supply voltage Circuit current Power dissipation Thermal derating Operating temperature Storage temperature Symbol Vcc Icc Pd K Topr Tstg Ratings 15.5 40 800(L)/550(FP) 8.0(L)/5.5(FP) -20 to +75 -40 to +125 Unit V mA mW mW/C C C Conditions Quiescent When mounted on PC board Ta 25C
Rev.1.0, Sep.05.2003, page 3 of 11
M51132L/FP
Electrical Characteristics
(Ta = 25C, Vcc = 12 V, f = 1 kHz, Vi = 1 Vrms, Volume Max, unless otherwise noted)
Item Circuit current Attenuation Channel balance Total harmonic distortion Input resistor Balance attenuation Output noise voltage Symbol Icco ATTo Att- CB THD Ri BAL Nomin Nomax Vimax Vomax CT GVP CBP Min. 9 -2 -- -2 -- 5.0 -- -- -- 2 2 -- -1.2 -2 Typ. 17 0 -105 0 0.01 150 -105 4.8 9 3.4 3.4 -102 +0.8 0 Max. 30 +2 -85 +2 0.1 -- -85 10 20 -- -- -80 +2.8 +2 Unit mA dB dB dB % k dB Vrms Vrms Vrms Vrms dB DB dB Test Conditions In quiescent state, volume: min Vi = 2 Vrms, IHF-A, volume: min 15 kHz, LPF Vi = 2 Vrms, IHF-A Rg = 10 k, in quiescent state, IHF-A, volume: min Rg = 10 k, in quiescent state, IHF-A THD = 1%, volume: center THD = 1% Rg = 0, Vi = 2 Vrms, IHF-A Volume: min Volume: min
Maximum input voltage Maximum output voltage Crosstalk Pass through voltage gain Pass through channel balance
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.
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M51132L/FP
Typical Characteristics
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M51132L/FP
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M51132L/FP
Test Circuit (M51132L)
Rev.1.0, Sep.05.2003, page 7 of 11
M51132L/FP
Switch Condition and Test Method
Switch Item Circuit current Attenuation Symbol Icco ATTo Att- Channel balance Total harmonic distortion Input resistor CB THD Ri S1-1 2 1 1 1 1 1 S1-2 2 1 1 1 1 1 S2 3 1 3 1 1 1 S3 3 1 2 3 2 1 2 1 2 1 2 2 2 2 S4 2 2 S5 2 2 1 2 1 2 1 2 1 2 1 2 Balance attenuation Output noise voltage BAL Nomin Nomax Maximum input voltage Maximum output voltage Crosstalk Pass through voltage gain Pass through channel balance Vimax Vomax CT GVP CBP 1 2 2 1 1 3 1 1 1 1 2 2 1 1 1 3 1 1 3 3 3 3 1 1 2 2 1 3 1 2 1 1 1 3 3 2 1 2 2 1 2 1 2 2 2 2 2 2 1 2 1 2 1 2 1 2 1 2 1/2 12 2 2 1 1 1 1 1 1 1 1/2 2 1 1 1/2 2 1 1 Input signal voltage when the output distortion rate is 1% Output signal voltage when the output distortion rate is 1% IHF-A in, CT(dB) = 20 log (Vo(Vrms)/2(Vrms)) GVP(dB) = 20 log(Vo/Vi) GBP(dB) = GVpch1 - GVpch2 1/2 1 1 1 IHF-A in 2 1 1 2 1/2 1 1 1 IHF-A in 1 1 2 12 12 1 Given the output as Vo1 when S81 and the output as Vo2 when S82, Ri(k) = 150/(Vo1/Vo2 - 1) BAL(dB) = 20 log(Vo/Vi) 1/2 2 1 1 15 kHz LPF in 12 2 1 1 CB(dB) = ATTch1 - ATTch2 1/2 1 1 1 S6 1 1/2 S7 2 2 S8-1 1 1 S8-2 1 1 Test Method Measure the current flowing to pin (1) in quiescent state Obtain from the equation ATT(dB) = 20 log(Vo/Vi) ATT- is IHF-A in
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.
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M51132L/FP
Application Examples (M51132L)
Rev.1.0, Sep.05.2003, page 9 of 11
M51132L/FP
14P5A
JEDEC Code -- Weight(g) 0.74 Lead Material Cu Alloy
Plastic 14pin 325mil ZIP
Package Dimensions
EIAJ Package Code ZIP14-P-325-1.27
1
14
A1
A2 A
Rev.1.0, Sep.05.2003, page 10 of 11
D
E
c e1
SEATING PLANE
Symbol
e
b
A A1 A2 b c D E e e1 L
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 -- --
16P2N-A
JEDEC Code -- e b2 Weight(g) 0.2 Lead Material Cu Alloy
M51132L/FP
MMP
Plastic 16pin 300mil SOP
EIAJ Package Code SOP16-P-300-1.27
16
9
HE
E
L1
L
Rev.1.0, Sep.05.2003, page 11 of 11
e1
Recommended Mount Pad Symbol
1 8
F A
G
D
A2
b
A1
x
M
e y
A A1 A2 b c D E e HE L L1 z Z1 x y c
z Detail G Detail F
Z1
b2 e1 I2
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 --
I2
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