DatasheetsPDF.com

LM4753 Dataheets PDF



Part Number LM4753
Manufacturers National Semiconductor
Logo National Semiconductor
Description Dual 10W Audio Power Amplifier
Datasheet LM4753 DatasheetLM4753 Datasheet (PDF)

LM4753 Dual 10W Audio Power Amplifier w/Mute, Standby and Volume Control June 1999 LM4753 Dual 10W Audio Power Amplifier w/Mute, Standby and Volume Control General Description The LM4753 is a stereo audio amplifier capable of delivering 10W/channel at 10% distortion into a 8Ω load. The power amp has an internally set gain of 30 dB. A 0V–5V DC controlled volume block provides 80 dB of attenuation from input to line-out. Line outputs are available after the volume control for signal routing. The.

  LM4753   LM4753


Document
LM4753 Dual 10W Audio Power Amplifier w/Mute, Standby and Volume Control June 1999 LM4753 Dual 10W Audio Power Amplifier w/Mute, Standby and Volume Control General Description The LM4753 is a stereo audio amplifier capable of delivering 10W/channel at 10% distortion into a 8Ω load. The power amp has an internally set gain of 30 dB. A 0V–5V DC controlled volume block provides 80 dB of attenuation from input to line-out. Line outputs are available after the volume control for signal routing. The amplifier has a smooth transition fade-in/out mute and a power conserving standby function which are controlled through TTL or CMOS logic. Both functions provide over 75 dB of attenuation. The LM4753 maintains an excellent Signal-to-Noise ratio of greater than 70 dB with a low noise floor less than 2 mV. The IC also maintains above 50 dB of channel separation. The LM4753 is available in a 15-lead non-isolated plastic package and is designed for use in TV applications requiring single supply operation. Key Specifications n n n n n n n Output power into 8Ω at 10% THD 10W Maximum operating voltage 28V Power output stage Noise floor 2 mV Line output Noise floor 55 µV 0V–5V DC controlled volume attenuation 80 dB Mute attenuation 75 dB Standby-mode supply current 7 mA Features n n n n Quiet fade-in/out mute function Stereo variable line-out pins AC output short circuit protection Thermal shutdown protection Applications n Stereo TVs n Component stereo n Compact stereo Typical Application DS100043-1 FIGURE 1. Typical Audio Amplifier Application Circuit © 1999 National Semiconductor Corporation DS100043 www.national.com Connection Diagram Plastic Package DS100043-2 Top View Order Number See NS Package Number TA15A for Staggered Lead Non-Isolated Package www.national.com 2 Absolute Maximum Ratings (Notes 3, 4) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Output Current Power Dissipation (Note 5) ESD Susceptibility (Note 6) ESD Susceptibility (Note 7) Junction Temperature 32V Internally Limited 22W 2000V 250V 150˚C Soldering Information T Package (10 sec) Storage Temperature Input Signal Voltage Range 260˚C −40˚C to +150˚C ± 3V Operating Ratings (Notes 3, 4) Temperature Range TMIN ≤ TA ≤ TMAX Supply Voltage θJA (Junction to Ambient) θJC (Junction to Case) −40˚C ≤ TA ≤ +85˚C 15V to 28V 35˚C/W 1.5˚C/W Electrical Characteristics (Notes 3, 4) The following specifications apply for VCC = +22V, and Volume @ 0 dB unless otherwise specified. Limits apply for TA = 25˚C. LM4753 Symbol ICQ (Note 1) ISTBY (Note 1) IMUTE AM (Note 2) Parameter Total Quiescent Power Supply Current Standby Current Mute Current Mute Attenuation Conditions VCM = 0V, Vo = 0V, Io = 0 mA 80 VSTDBY = 5V, Standby-on VMUTE = 5V Mute-on VMUTE = 5V, VSTDBY = 0V. Mute-on Signal Input VMUTE = 0V. VSTDBY = 0V. Mute-off 2 Vrms Volume Attenuation Range Volume Absolute Attenuation Line-out Line-out Offset Voltage PO (Note 1) THD+N (Note 2) Xtalk (Note 2) SR (Note 2) RIN (Note 1) IO (Note 1) PSRR (Note 2) GBWP eVCAout eout SNR Output Power (Continuous Average) THD+N = 10% (max) f = 1 kHz, RL = 8Ω, VCC = 28 f = 1 kHz, RL = 8Ω, VCC = 22V Total Harmonic Distortion Plus Noise Channel Separation Power Amp Closed-Loop Gain Error Slew Rate Input Impedance Output Current Limit Power Supply Rejection Ratio Gain-Bandwidth Product Power Bandwidth VCA Output Noise Power Amp Output Noise Signal-to-Noise Ratio VIN = 100 mV DC, tON = 1 ms, RL = 1Ω Vpin 13 AC = 1 Vrms, f = 100 Hz VCM = 0V, Io = 0 mA fo = 100 kHz, VIN = 50 mvrms −3 dB Bandwidth at 5W IHF - A Weighting Filter RIN = 25Ω IHF - A Weighting Filter RIN = 25Ω Measured at 1 kHz, Rs = 25Ω Po = 4.8W, A - Weighted, 3 Typical (Note 8) Limit (Note 9) 20 140 10 20 60 Units (Limits) mA (min) mA (max) mA (max) mA dB (min) dB 7 13 75 ±5 80 70 dB (min) dB (max) mV (max) W Pin 3 @ 0V = 80 dB, 2V = 14 dB, 3V = 8 dB, 4V = 3 dB, 5V = 0 dB ±3 20 11.8 7 0.4 50 0.5 3 32 2.5 50 2 90 55 1.8 ±5 40 6.5 1 W(min) % (max) dB Po = 1W, f = 1 kHz, RL = 8Ω f = 1 kHz, Po = 5W, RL = 8Ω Internal Gain = 30 dB VIN = 100 mVp-p, tRISE = 2 ns, RL = 8Ω ±1 dB (max) V/µs kΩ 2.0 A(min) dB MHz kHz µV mV 70 dB www.national.com Electrical Characteristics (Notes 3, 4) (Continued) The following specifications apply for VCC = +22V, and Volume @ 0 dB unless otherwise specified. Limits apply for TA = 25˚C. LM4753 Symbol Standby VIL VIH Mute VIL VIH Mute Low Input Voltage Mute High Input Voltage 0.8 2.0 V (max) V (min) Standby Low Input Voltage Standby High Input Voltage 0.8 2.0 V (max) V (min) Parameter Conditions Typical (Note 8) Limit (Note 9) Units (Limits) Note 1: DC Electrical Test. Note 2: AC Electrical Test. Note 3: 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 guarantee specific p.


LM4752 LM4753 LM4755


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)