EUA6021A

EUA6021A 2.5-W Stereo Audio Power Amplifier with Advanced DC Volume Control DESCRIPTOIN The EUA6021A is a stereo audio power amplifier that drives 2.5 W/channel of continuous RMS power into a 4-Ω load. Advanced dc volume control minimizes external components and allows BTL (speaker) volume control and SE (headphone) volume control. The 20-pin DIP package allows for the use of a heatsink which provides higher output power. To ensure a smooth transition between active and shutdown modes, a fade mode ramps the volume up and down. FEATURES 2.5 W into 4-Ω Speakers With External Heatsink DC Volume Control with 2-dB Step from -40dB to 20dB -Fade Mode - -85-dB Mute Mode Differential Inputs 1μA Shutdown Current (Typical) Headphone Mode RoHS Compliant and 100% Lead (Pb)-Free APPLICATIONS LCD Monitors DS6021A Ver 1.2 Jun. 2007 1 EUA6021A Block Diagram DS6021A Ver 1.2 Jun. 2007 2 EUA6021A Typical Application Circuit Figure 1. Application circuit using single-ended inputs and input MUX Figure 2. Application circuit using differential inputs DS6021A Ver 1.2 Jun. 2007 3 EUA6021A Pin Configurations Package Pin Configurations(Top View) DIP-20 Pin Description PIN BYPASS PIN 16 I/O I DESCRIPTION Tap to voltage divider for internal midsupply bias generator used for analog reference Places the amplifier in fade mode if a logic low is placed on this terminal; normal operation if a logic high is placed on this terminal. Analog power supply ground Left channel negative input for fully differential input. Left channel positive input for fully differential input. Left channel negative audio output. Left channel positive audio output. No connection Power ground Supply voltage terminal for power stage Right channel negative input for fully differential input. Right channel positive input for fully differential input. Right channel negative audio output Right channel positive audio output Output control. When this terminal is high, SE outputs are selected. When this terminal is low, BTL outputs are selected. FADE AGND LINLIN+ LOUTLOUT+ NC PGND PVDD RINRIN+ ROUTROUT+ 15 17 7 8 10 12 13 1,11 3,9 5 4 2 20 19 14 6 18 I I I O O I I O O I I I SE/BTL SHUTDOWN VDD VOLUME Places the amplifier in shutdown mode if a TTL logic low is placed on this terminal Supply voltage terminal Terminal for dc volume control. DC voltage range is 0 to VDD. DS6021A Ver 1.2 Jun. 2007 4 EUA6021A Ordering Information Order Number EUA6021AIIT1 Package Type DIP-20 Marking xxxxx A6021AA Operating Temperature range -40 °C to 85°C EUA6021A □□□□ Lead Free Code 1: Lead Free 0: Lead Packing T: Tube Operating temperature range I: Industry Standard Package Type I: DIP DS6021A Ver 1.2 Jun. 2007 5 EUA6021A Absolute Maximum Ratings Supply voltage, VDD------------------------------------------------------------------------------------------------ 6V Input voltage, VI------------------------------------------------------------------------------ –0.3 V to VDD +0.3 V Continuous total power dissipation --------------------------------------------------------------- internally limited Operating free-air temperature range, TA--------------------------------------------------------- –40°C to 85° C Operating junction temperature range, TJ ------------------------------------------------------ - –40°C to 150°C Storage temperature range, Tstg------------------------------------------------------------------ -- –65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds----------------------------------------- 260°C Thermal Resistance θJA (DIP) --------------------------------------------------------------------------------------------------- 87.9°C/W Recommended Operating Conditions Min Supply voltage, VDD High-level input voltage, VIH Low-level input voltage, VIL Operating free-air temperature, TA 4 Max 5.5 Unit V V SE/BTL , FADE VDD × 0.8 2 VDD × 0.6 0.8 -40 85 SHUTDOWN SE/BTL , FADE SHUTDOWN V °C Electrical Characteristics at Specified Free-air Temperature, VDD = PVDD=5.5V, TA = 25°C Symbol Parameter Output offset voltage (measured differentially) Power supply rejection ratio High-level input current ( SE/ BTL , SHUTDOWN , FADE ,VOLUME,) Low-level input current Conditions VDD= 5.5V,Gain=0 dB, SE/BTL =0V VDD= 5.5V,Gain=20 dB, SE/BTL =0V VDD= PVDD= 4 V to 5.5 V VDD= PVDD=5.5V, VI = VDD =PVDD VDD= PVDD=5.5V, VI = 0V VDD= PVDD=5.5V, , SE/BTL =0V, SHUTDOWN =2V VDD= PVDD=5.5V, , SE/BTL =5.5V SHUTDOWN =2V VDD= PVDD=5.5V, , SE/BTL =0V, SHUTDOWN =2V,RL=3Ω, Po=2 W, stereo EUA6021A Min. Typ. Max. 30 50 -42 -70 1 1 6 3 7.5 5 1.5 1 20 9 Unit mV mV dB µA µA VOO PSRR IIH IIL IDD Supply current, no load mA 6 ARMS µA IDD IDD(SD) Supply current, max power into a 3-Ω load Supply current, shutdown mode SHUTDOWN =0V DS6021A Ver 1.2 Jun. 2007 6 EUA6021A Operating Characteristics, VDD =PVDD= 5V, TA = 25°C, RL = 4Ω, Gain =6 dB Symbol Parameter Conditions THD=1%, f=1kHz THD=10%, f=1kHz,VDD=5V Total harmonic distortion plus noise High-level output voltage PO=1W, RL=8Ω,f=1 kHz EUA6021A Min. Typ. 1.85 2.5