LV4992TT

Ordering number : ENA0932 Bi-CMOS IC LV4992TT Overview For Portable Audio Equipment Stereo SE Power Amplifier The LV4992TT is the best LSI for the speaker drive for portable equipment that is battery drive, including the power amplifier circuit capable of low voltage (from 2.7V) operation and stand-by function to reduce the consumption current. Functions and Features • Built-in stereo SE power amplifier Output power 1= 160mW (VCC = 3.6V, RL = 8Ω and THD = 10%) Output power 2= 340mW (VCC = 5.0V, RL = 8Ω and THD = 10%) Output power 3= 55mW (VCC = 3.6V, RL = 32Ω and THD = 10%) Output power 4= 110mW (VCC = 5.0V, RL = 32Ω and THD = 10%) • Enabling low voltage operation : VCC = from 2.7V • Standby function : (supply current in standby mode : 0.1μA (standard) : (VCC = 3.6V) • Thermal shut down circuit • Enabling gain setting : Voltage gain (0 to 14dB) • No capacitor for output phase compensation is necessary. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Substrate mounted* Conditions Ratings 6 750 -40 to +85 -40 to +150 Unit V mV °C °C * When mounted on the specified printed circuit board ( 58 × 89 × 1.6mm, glass epoxy, both side) Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 92607 MS PC 20070903-S00001 No.A0932-1/10 LV4992TT Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Recommended load resistance Operating supply voltage range Symbol VCC RL VCC op Conditions Ratings 3.6 8 to 32 2.7 to 5.5 Unit V Ω V Note : Please determine supply voltage used with due consideration of allowable power dissipation Electrical Characteristics Ta = 25°C, VCC = 3.6V, fin = 1kHz, RL = 8Ω Parameter Supply current during no signal Standby supply current Output power Voltage gain Voltage gain difference Total harmonic distortion Output noise voltage Channel separation Ripple rejection ratio Reference voltage (pin 3) High level control voltage (pin 2) Low level control voltage (pin 2) Symbol ICCOP ISTBY POMX VG VGR THD VNOUT CHSEP SVRR VREF VSTBH VSTBL Power amplifier operation mode Power amplifier standby mode 1.9 0 VIN = -10dBV Rg = 620Ω, 20 to 20kHz PO = 50mW, Rg = 620Ω and 20 to 20kHz Rg = 620Ω, fr = 100Hz and Vr = -20dBV 50 No signal No signal, V2 = LOW THD = 10% VIN = -30dBV 100 5 0 0.1 65 60 47 1.81 VCC 0.3 Conditions Ratings min typ 2.7 0.1 160 6.5 8 14 1 195 max 4.5 10 Unit mA μA mW dB dB % μVrms dB dB V V V Package Dimensions unit : mm (typ) 3245B Allowable power dissipation, Pd max – mW 1000 900 Pd max – Ta When mounted on the specified printed circuit board :58×89×1.6mm3 glass epoxy board Specified printed circuit board 3.0 8 800 (Both sides) 750 Specified printed circuit board 700 (Single sides) 650 600 500 400 300 200 100 0 – 40 – 20 0 20 3.0 4.9 0.5 390 338 1 (0.53) 2 0.65 0.25 (0.85) 1.1MAX 0.125 40 60 80 100 Ambient temperature, Ta – °C SANYO : MSOP8(150mil) 0.08 No.A0932-2/10 LV4992TT Recommended Board Layout 1. Both side Size : 58mm×89mm×1.6mm Top Layer Bottom Layer 2. Single side Size : 58mm×89mm×1.6mm Top Layer Bottom Layer No.A0932-3/10 LV4992TT Block Diagram and Sample Application Circuit V + C1 CC 2.2μF R2 22kΩ C2 0.1μF C3 R1 0.22μF 10kΩ IN1 1 VCC 2 3 4 BIAS + TSD AMP1 VCC GND 8 7 6 5 OUT1 VCC GND OUT2 C6 220μF + from CPU R3 10kΩ STBY VREF C5 0.22μF C4 1μF IN2 R4 10kΩ SPEAKER 8Ω C7 220μF + + R5 22kΩ AMP2 SPEAKER 8Ω Test Circuit VCC 2.2μF 22kΩ 0.1μF + S1 620Ω 0.22μF 10kΩ 10kΩ 1 2 8 7 220μF + VSTBY VIN S2 620Ω LA4992TT 3 4 6 5 220μF + SPEAKER 8Ω 1μF 0.22μF 10kΩ 22kΩ SPEAKER 8Ω No.A0932-4/10 LV4992TT Pin Function Pin No. 1 4 Pin name IN1 IN2 Pin voltage VCC = 3.6V 1.81 Input pin Description Equivalent circuit 1 4 VCC + - 3kΩ 2 STBY Standby pin •Standby mode (0 to 0.3V) •Operation mode (1.9 to VCC) VCC 2 21kΩ 121.4kΩ 40.7kΩ GND 3 VREF 1.81 Ripple filter pin (Capacity connection for filter) VCC 100kΩ VCC 3 450kΩ 101kΩ GND 5 8 OUT2 OUT1 1.81 Power amplifier output pin VCC + - 5 8 10kΩ 6 7 GND VCC 0 3.6 Ground pin Power supply pin No.A0932-5/10 LV4992TT Usage Note 1. Input coupling capacitor (C3 and C5) Since the high pass filter is formated by the input coupling capacitor C3, C5 and the input resistance R1, R4, low frequency attenuates. Therefore, it is necessary to select the capacitance value with due considelation of passband. The capacitance value influences a shock noise when the switch is turned on, caution is demanded because the level of shock noise becomes large when a bigger capacitance value is set. 2. The 3rd pin capacitor (C4) The power supply ripple is reduced by the 3rd pin capacitor C4. The Ripple rejection ratio improves when the capacitance value is large. However, this capacitor influences the shock noise and rise time of amplifier. Please design with both characteristics in mind. 3. Standby pin (pin 2) The standby mode and the operation mode can be switched by controlling the standby pin. Standby mode ⇒ V2 = 0 to 0.3V Operation mode ⇒ V2 = 1.9 to VCCV In addition, caution is necesssary since the current IST flows to the standby pin when the standby pin is used by working with power supply as shown in FIG.1. VCC VCC−1.4V IST = (Approximate value) R3+21kΩ VCC R3 STBY 7 2 Fig. 1 4. Power supply bypass capacitor (C2) The bypass capacitor must be inserted, as close as possible to the power supply pin (pin 7). 5. Short-circuit between terminals Turning on the power supply with the short-circuit between terminals leads to the deterioration and destruction of IC. When fixing the IC to the substrate, please check that the solder is not short-circuited between the terminals before turning on the power. 6. Load Short-circuit Leaving the IC in the load short-circuit for many hours leads to the deterioration and destruction of the IC. The load must not be short-circuited absolutely. 7. Maximum rating When the rated value used is just below to the absolute maximum ratings value, there is a possibillity to exceed the maxixmum rating value with slight extrusion variable. Also, it can be a destructive accident. Please use within the absolute maximum ratings with sufficient variation margin of supply voltage. No.A0932-6/10 LV4992TT General Characteristics 4 3.5 RL = Open ICCO – VCC Total harmonic distortion, THD – % Supply current, ICCO – mA 100 7 5 3 2 10 7 5 3 2 1 7 5 3 2 RL = 8Ω VG = 6dB fin = 1kHz 100Hz