APA0711K-TR

APA0710/0711 1.1W Mono Low-Voltage Audio Power Amplifier Features • • • • • • Operating Voltage : 2.6V-5.5V APA0710 Compatible with TPA711 APA0711 Compatible with TPA751 Bridge-Tied Load (BTL) or Single-Ended (SE) Modes Operation (for APA0710 only) Supply Current – IDD=1.3mA at VDD=5V ,BTL mode – IDD=0.9mA at VDD=3.3V ,BTL mode Low Shutdown Current – IDD=0.1µA Low Distortion – 630mW, at VDD=5V, BTL, RL=8Ω THD+N=0.15% – 280mW, at VDD=3.3V, BTL, RL=8Ω THD+N=0.15% General Description The APA0710 is a bridged-tied load (BTL) or singledended (SE) audio power amplifier developed especially for low-voltage applications where internal speakers and external earphone operation are required. The APA0711 is a only BTL audio power amplifier developed especially for low-voltage applications where internal speakers are required. Operating with a 5V supply, the APA0710/1 can deliver 1.1W of continuous power into a BTL 8Ω load at 10% THD+N throughout voice band frequencies. Although this device is characterized out to 20kHz,its operation is optimized for narrow band applications such as wireless communications. The BTL configuration eliminates the need for external coupling capacitors on the output in most applications, which is particularly important for small battery-powered equipment. A unique feature of the APA0710 is that it allows the amplifier to switch from BTL to SE on the fly when an earphone drive is required. This eliminates complicated mechanical switching or auxiliary devices just to drive the external load. This device features a shutdown mode for power-sensitive applications with special depop circuitry to eliminate speaker noise when exiting shutdown mode. The APA0710/1 are available in an 8-pin SOP and 8-pin MSOP-P with enhanced thermal pad. • Output Power at 1% THD+N – 900mW, at VDD=5V, BTL, RL=8Ω – 400mW, at VDD=3.3V, BTL, RL=8Ω at 10% THD+N – 1.1W at VDD=5V, BTL, RL=8Ω – 480mW at VDD=3.3V, BTL, RL=8Ω • • • • Depop Circuitry Integrated Thermal Shutdown Protection and Over Current Protection Circuitry High supply voltage ripple rejection Surface-Mount Packaging – 8 pin MSOP-P (with enhanced thermal pad) power package available – SOP-8 package Applications • • • • Mobil Phones PDAs Digital Camera Portable Electronic Devices • Lead Free Available (RoHS Compliant) ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 1 www.anpec.com.tw APA0710/0711 Pin Description APA0710 Shutdown Bypass SE/BTL IN 1 8 APA0711 VOGND VDD VO+ Shutdown Bypass IN+ IN1 8 VOGND VDD VO+ 2 7 2 7 3 6 3 6 4 5 4 5 SOP-8 APA0710 Shutdown Bypass SE/BTL IN 1 8 SOP-8 APA0711 VOGND VDD VO+ Shutdown Bypass IN+ IN1 8 VOGND VDD VO+ 2 7 2 7 3 6 3 6 4 5 4 5 MSOP-8-P NC = No internal connection MSOP-8-P = Thermal Pad (connected to GND plane for better heat dissipation) Ordering and Marking Information APA0710/1 Lead Free Code Handling Code Temp. Range Package Code APA0710/1 K : APA0710/1 XA : APA0710/1 XXXXX A0710/1 XXX XX Package Code K : SOP-8 XA : MSOP-8-P Temp. Range I : -40 to 85 ° C Handling Code TR : Tape & Reel Lead Free Code L : Lead Free Device Blank : Original Device XXXXX - Date Code XXXXX - Date Code Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering operations. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C for MSL classification at lead-free peak reflow temperature. Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 2 www.anpec.com.tw APA0710/0711 Block Diagram RF Audio Input V DD RI V DD /2 4 IN Bypass 6 V DD Cs Vo+ CI 2 5 CC _ + CB _ VoFrom System Control From HP Jack 1 3 8 + Shutdown SE/BTL Bias Control GND 7 APA0710 RF Au d i o In p u t VDD RI 4 CI 3 2 CB IN IN + Bypass VDD /2 6 VDD Cs _ Vo+ 5 + _ Vo8 + From S ys te m C o n t r o l 1 Shutdown Bias C o n trol GND 7 APA0711 Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 3 www.anpec.com.tw APA0710/0711 Absolute Maximum Ratings (Over operating free-air temperature range unless otherwise noted.) Symbol VDD VIN TA TJ TSTG TS VESD PD Note: 1.APA0710/1 integrated internal thermal shutdown protection when junction temperature ramp up to 170°C 2.Human body model: C=100pF, R=1500Ω , 3 positives pulses plus 3 negative pulses 3.Machine model: C=200pF, L=0.5µ F, 3 positive pulses plus 3 negative pulses Parameter Supply Voltage Input Voltage Range, Shutdown, SE/BTL Operating Ambient Temperature Range Maximum Junction Temperature Storage Temperature Range Soldering Temperature, 10 seconds Electrostatic Discharge Power Dissipation Rating -0.3 to 6 -0.3 to VDD+0.3 -40 to 85 Internally Limited* -65 to +150 260 -2000 to 2000* 2 1 Unit V V °C °C °C °C V W Internally Limited Recommended Operating Conditions Symbol VDD VIH VIL Parameter Supply Voltage High-Level Voltage Low-Level Voltage Shutdown, Shutdown SE/BTL Shutdown, Shutdown SE/BTL Test Conditions Min. 2.6 2.2 0.9VDD 0.4 0.9VDD-1 Max. 5.5 Unit V V V Thermal Characteristics Symbol RTHJA Parameter Thermal Resistance from Junction to Ambient in Free Air MSOP-8-P* SOP-8 50 160 °C/W Value Unit * 3.42in 2 printed circuit board with 20z trace and copper through 6 vias of 12mil diameter vias. The thermal pad on the MSOP-8-P package with solder on the printed circuit board. Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 4 www.anpec.com.tw APA0710/0711 Electrical Characteristics Electrical Characteristics at Specified Free - Air Temperature VDD = 3.3V, TA = 25°C (unless otherwise noted) Symbol VOO IDD IDD(SD) Parameter Output Offset Voltage Supply Current Supply Current, Shutdown Mode Test Conditions RL = 8Ω, R F = 10kΩ BTL mode, RF = 10kΩ SE mode, RF = 10kΩ RF = 10kΩ Shutdown, VI = V DD APA0710/1 Min. Typ. Max. 20 0.9 0.55 0.1 1.8 1.1 2 1 1 1 1 1 1 400 40 0.15 20 2 74 61 28 380 Unit mV mA µA |IH| Shutdown, VI = V DD SE/BTL, VI = VDD Shutdown, VI = 0V µA |IL| Shutdown, VI = 0V SE/BTL, VI = 0V µA Operating characteristic, VDD = 3.3V, T A = 25°C, RL = 8Ω PO THD+N Bom B1 PSRR Vn T WU Output Power (Note 1) THD = 1%, BTL mode, RL = 8Ω THD = 1%, SE mode, RL = 32Ω mW % kHz MHz dB µV(rms) ms Total Harmonic Distortion PO = 280mW, BTL mode, R L = 8Ω Plus Noise (Note 1) Maximum Output Power Gain = 2, THD+N = 2% Bandwidth Unity-Gain Bandwidth Open Loop Power Supply Rejection Ratio (Note1) Noise Output Voltage W ake-up time CB = 1µF, BTL mode, RL = 8Ω CB = 1µF, SE mode, RL = 8Ω Gain = 1, CB = 0.1µF CB = 1µF VDD= 5V, TA = 25°C (unless otherwise noted) Symbol VOO IDD IDD(SD) Parameter Output Offset Voltage Supply Current Supply Current , Shutdown Mode Test Conditions RL = 8Ω, R F = 10kΩ BTL mode, RF = 10kΩ SE mode, RF = 10kΩ RF = 10kΩ APA0710/1 Min. Typ. Max. 20 1.3 0.75 0.1 2.6 1.5 2 Unit mV mA µA Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 5 www.anpec.com.tw APA0710/0711 Electrical Characteristics(Cont.) Electrical Characteristics at Specified Free - Air Temperature (Cont.) VDD= 5V, TA= 25°C (unless otherwise noted) Symbol Parameter Test Conditions Shutdown, VI = VDD APA0710/1 Min. Typ. Max. 1 1 1 1 1 1 900 94 0.15 20 2 74 61 28 400 Unit |IH| Shutdown, VI = VDD SE/BTL, VI = VDD Shutdown, VI = 0V µA |IL| Shutdown, VI = 0V SE/BTL, VI = 0V µA Operating characteristic, VDD = 5V, TA = 25°C, RL = 8Ω THD = 1%, SE mode, RL = 32Ω Total Harmonic Distortion PO = 630mW, BTL mode, THD+N (Note 1) Plus Noise RL = 8 Ω Maximum Output Power Bom Gain = 2, THD+N = 2% Bandwidth B1 Unity-Gain Bandwidth Open Loop PSRR Vn Twu Power Supply Rejection (Note1) Ratio Noise Output Voltage Wake-up time CB = 1µF, BTL mode, RL = 8Ω CB = 1µF, SE mode, RL = 8Ω Gain = 1, CB = 0.1µF CB = 1µF PO Output Power (Note 1) THD = 1%, BTL mode, RL = 8Ω mW % kHz MHz dB µV(rms) ms Note1 : Output power is measured at the output terminals of device at f=1KHz. Pin Description APA0710 Pin Name Shutdown Bypass SE/BTL IN VO+ VDD GND VONo 1 2 3 4 5 6 7 8 O I/O I I I I Description Shutdown mode control signal input, place entire IC in shutdown mode when held high. Bypass pin When SE/BTL is held low, the APA0710 is in BTL mode. When SE/BTL is held high, the APA0710 is in SE mode In is the audio input terminal Supply voltage input pin Ground connection for circuitry VO- is the negative output in BTL mode and a high-impedance output in SE mode 6 www.anpec.com.tw O VO+ is the positive output for BTL and SE modes Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 APA0710/0711 Pin Description APA0711 Pin Name Shutdown Bypass IN+ INVO+ VDD GND VONo 1 2 3 4 5 6 7 8 I/O I I I I Description Shutdown mode control signal input, place entire IC in shutdown mode when held low. Bypass pin IN+ is the non-inverting input. IN+ is typically tied to the Bypass terminal. IN- is the inverting input. IN- is typically used as the audio input terminal. Supply voltage input pin. Ground connection for circuitry. O VO+ is the positive BTL output. O VO- is the negative BTL output. Typical Application Circuit for APA0710 Application RF 1 0kΩ Audio Input V DD V DD /2 4 IN Bypass 6 CC 330 µ F 5 V DD Cs 1µ F RI 10k Ω _ Vo+ CI 0.47 µ F CB 1µF 2 + 1kΩ _ Vo1 3 0.1 µ F V DD 100k Ω 100k Ω Shutdown SE/BTL Bias Control 8 + 7 GND From System Control Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 7 www.anpec.com.tw APA0710/0711 Typical Application Circuit (Cont.) for APA0711 Application RF 1 0 kΩ VD D VDD/2 4 3 ININ+ Audio Input 6 VD D Cs RI 1 0k Ω _ Vo+ 5 1µ F CI 0.47 µ F + 2 CB 1µ F Byp a s s _ Vo8 + From S ystem Control 1 Shutdown Bias Control 7 GND for APA0711 Differential Input Application RF 1 0 kΩ VD D VDD/2 4 3 ININ+ 6 VD D Cs 1µ F Audio C I RI Input- 0.47 µ F 1 0k Ω _ Vo+ 5 + Audio Input+ RI 10k Ω R F 1 0 kΩ 2 Bypass CI 0.47 µ F CB 1µ F _ Vo8 + From S ys tem Control 1 Shutdown Bias Control 7 GND Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 8 www.anpec.com.tw APA0710/0711 Typical Characteristics PSRR vs. Frequency +0 PSRR vs. Frequency +0 Ripple Rejection Ration (dB) No-Capacitor -20 Ripple Rejection Ration (dB) No-Capacitor -20 -40 CB=1µF CB=0.1µF -40 CB=1µF CB=0.1µF -60 -60 CB=2.2µF -80 CB=2.2µF -80 VDD=3.3V RL=8Ω SE 20 100 1k 10k 20k VDD=5V RL=8Ω SE 100 1k 10k 20k -100 -100 20 Frequency (Hz) Frequency (Hz) PSRR vs. Frequency +0 Supply Current vs. Supply Voltage 1600 T L=8Ω R CB=1µF BTL RF=10kΩ 1400 Ripple Rejection Ration (dB) -20 Supply Current ( µA) 1200 BTL(SE/BTL=0.1VDD) 1000 800 600 400 200 0 -40 -60 VDD=3.3V -80 SE(SE/BTL=0.9VDD) VDD=5V -100 20 100 1k 10k 20k 2.5 3 3.5 4 4.5 5 5.5 Frequency (Hz) Supply Voltage(V) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 9 www.anpec.com.tw APA0710/0711 Typical Characteristics (Cont.) Supply Current vs. Supply Voltage 0.12 Output Power vs. Supply Voltage 1200 RF=10kΩ 1000 THD+N=1% f=1kHz BTL Supply Current (uA) Output Power (mW) 0.11 800 0.1 600 RL=8Ω 400 0.09 200 RL=32Ω 0.08 2.5 3 3.5 4 4.5 5 5.5 0 2.5 3 3.5 4 4.5 5 5.5 Supply Voltage(V) Supply Voltage(V) Output Power vs. Supply Voltage 400 350 1000 Output Power vs. Load Resistance THD+N=1% f=1kHz BTL THD+N=1% f=1kHz SE 900 800 Output Power (mW) Output Power (mW) 300 250 200 150 100 50 0 2.5 700 600 500 400 300 200 100 0 RL=8Ω VDD=5V RL=32Ω VDD=3.3V 3 3.5 4 4.5 5 5.5 8 16 24 32 40 48 56 64 Supply Voltage(V) Load Resistance(Ω) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 10 www.anpec.com.tw APA0710/0711 Typical Characteristics (Cont.) Output Power vs. Load Resistance 350 300 250 THD+N vs. Frequency 10 THD+N=1% f=1kHz SE VDD=3.3V Po=250mW RL=8Ω BTL AV=-20V/V Output Power (mW) 1 200 150 VDD=5V 100 50 0 8 16 24 32 40 48 56 64 THD+N (%) AV=-10V/V 0.1 AV=-2V/V VDD=3.3V 0.01 20 100 1k 10k 20k Load Resistance(Ω) Frequency (Hz) THD+N vs. Frequency 10 THD+N vs. Output Power 10 VDD=3.3V RL=8Ω AV=-2V/V BTL Po=50mW Po=125mW 1 VDD=3.3V f=1kHz AV=-2V/V BTL THD+N (%) THD+N (%) 1 RL=8Ω 0.1 0.1 Po=250mW 0.01 20 0.01 100 1k 10k 20k 0 0.1 0.2 0.3 0.4 0.5 0.6 Frequency (Hz) Output Power (W) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 11 www.anpec.com.tw APA0710/0711 Typical Characteristics (Cont.) THD+N vs. Output Power 10 THD+N vs. Frequency 10 f=10kHz 1 VDD=5V Po=700mW RL=8Ω BTL AV=-20V/V f=20kHz 1 THD+N (%) THD+N (%) AV=-10V/V f=1kHz 0.1 f=20Hz VDD=3.3V RL=8Ω CB=1µF AV=-2V/V BTL 1 0.1 AV=-2V/V 0.01 0.01 0.01 0.1 20 100 1k 10k 20k Output Power (W) Frequency (Hz) THD+N vs. Frequency 10 R R THD+N vs. Output Power 10 VDD=5V RL=8Ω AV=-2V/V BTL Po=50mW Po=700mW 1 VDD=5V f=1kHz AV=-2V/V BTL 1 THD+N (%) THD+N (%) RL=8Ω 0.1 0.1 Po=350mW 0.01 20 100 1k 10k 20k 0.01 0.1 0.3 0.5 0.7 0.9 1.1 1.2 Frequency (Hz) Output Power (W) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 12 www.anpec.com.tw APA0710/0711 Typical Characteristics (Cont.) THD+N vs. Output Power 10 10 THD+N vs. Frequency VDD=3.3V Po=30mW RL=32Ω SE AV=-10V/V f=10kHz 1 1 f=20kHz THD+N (%) THD+N (%) AV=-5V/V 0.1 f=1kHz 0.1 VDD=5V RL=8Ω CB=1µF AV =2V/V BTL 0.01 0.01 f=20Hz AV=-1V/V 0.1 1 0.001 20 100 1k 10k 20k Output Power (W) Frequency (Hz) THD+N vs. Frequency 10 R VDD=3.3V 10 THD+N vs. Output Power VDD=3.3V f=1kHz RL=32Ω AV=-1V/V 1 SE RL=32Ω AV=-1V/V SE 1 THD+N (%) Po=10mW 0.1 THD+N (%) 10k 20k 0.1 Po=15mW 0.01 Po=30mW 0.01 0.001 20 100 1k 0.001 0.02 0.025 0.03 0.035 0.04 0.045 0.05 Frequency (Hz) Output Power (W) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 13 www.anpec.com.tw APA0710/0711 Typical Characteristics (Cont.) THD+N vs. Output Power 10 THD+N vs. Frequency 10 T T TTTTT T TTTTTTTT TTTTTTTTTT TT T T T TTTTTTT T T VDD=3.3V RL=32Ω AV=-1V/V SE 1 1 VDD =5V Po=60mW RL=32Ω SE AV=-10V/V f=20Hz THD+N (%) THD+N (%) 0.1 AV=-5V/V 0.1 f=20kHz f=10kHz 0.01 f=1kHz 0.01 AV=-1V/V 0.001 0.002 0.01 0.1 0.001 20 100 1k 10k 20k Output Power (W) Frequency (Hz) THD+N vs. Frequency 10 R R R R THD+N vs. Output Power 10 VDD=5V RL=32Ω AV=-1V/V SE 1 1 VDD=5V f=1kHz RL=32Ω AV=-1V/V SE THD+N (%) 0.1 Po=15mW Po=30mW THD+N (%) 10k 20k 0.1 0.01 Po=60mW 0.01 0.001 20 100 1k 0.02 0.04 0.06 0.08 0.1 0.12 0.14 Frequency (Hz) Output Power (W) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 14 www.anpec.com.tw APA0710/0711 Typical Characteristics (Cont.) THD+N vs. Output Power 10 THD+N vs. Frequency T 10 VDD=5V RL=32Ω AV=-1V/V SE 1 VDD=3.3V Po=0.1mW RL=10kΩ SE 1 THD+N (%) THD+N (%) f=20kHz f=20Hz AV=-2V/V 0.1 0.1 AV=-1V/V 0.01 f=10kHz AV=-5V/V 0.01 0.002 f=1kHz 0.01 0.1 0.2 20 100 1k 10k 20k Output Power (W) Frequency (Hz) THD+N vs. Frequency 10 THD+N vs. Output Power 10 VDD=3.3V RL=10kΩ AV=-1V/V SE 1 THD+N (%) VDD=3.3V f=1kHz RL=10kΩ AV=-1V/V SE 1 THD+N (%) 0.1 Po=0.1mW Po=0.05mW 0.1 0.01 20 Po=0.13mW 100 1k 10k 20k 0.01 50 75 100 125 150 175 200 Frequency (Hz) Output Power (µW) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 15 www.anpec.com.tw APA0710/0711 Typical Characteristics (Cont.) THD+N vs. Output Power 10 THD+N vs. Frequency 10 T T T T VDD=3.3V RL=10kΩ AV=-1V/V SE T VDD=5V Po=0.3mW RL=10kΩ SE 1 1 THD+N (%) f=20Hz f=20kHz THD+N (%) 0.1 AV=-5V/V 0.1 0.01 AV=-1V/V AV=-2V/V 0.01 50 f=1kHz 100 f=10kHz 0.001 20 200 300 400 500 100 1k 10k 20k Output Power (µW) Frequency (Hz) THD+N vs. Frequency 10 THD+N vs. Output Power 10 VDD=5V RL=10kΩ AV=-1V/V SE 1 THD+N (%) 1 VDD=5V f=1kHz RL=10kΩ AV=-1V/V SE 0.1 THD+N (%) 0.1 Po=0.2mW Po=0.1mW 0.01 0.01 Po=0.3mW 0.001 20 100 1k 10k 20k 0.001 50 500 100 150 200 250 300 350 400 450 Frequency (Hz) Output Power (µW) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 16 www.anpec.com.tw APA0710/0711 Typical Characteristics (Cont.) THD+N vs. Output Power 10 Close Loop Gain and Phase vs. Frequency +28 +24 +220 VDD=5V RL=10kΩ AV=-1V/V SE Close Loop Gain (dB) 1 +180 +20 +16 +12 Phase +140 THD+N (%) f=20Hz 0.1 f=20kHz f=10kHz 0.01 +100 Gain +8 +4 -0 f=1kHz 0.001 10 VDD=3.3V RL=8Ω AV=-4V/V Po=250mW BTL 10 100 1k 10k 100k +60 +20 100 500 Output Power (µW) Frequency (Hz) Close Loop Gain and Phase vs. Frequency +28 +220 +24 Close Loop Gain and Phase vs. Frequency +10 +8 +300 Gain Phase +260 +220 +180 Close Loop Gain (dB) +20 Close Loop Gain (dB) +180 +6 +4 +2 +0 -2 -4 -6 -8 -10 Phase(°) +16 +12 Phase +100 +140 +100 Gain +8 +4 -0 10 100 1k VDD=5V RL=8Ω AV=-4V/V Po=700mW BTL 10k 100k +60 +20 VDD=3.3V RL=32Ω AV=-2V/V Po=30mW SE 10 100 1k 10k 100k +60 +20 Frequency (Hz) Frequency (Hz) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 17 www.anpec.com.tw Phase(°) +140 Phase(°) APA0710/0711 Typical Characteristics (Cont.) Close Loop Gain and Phase vs. Frequency +10 +8 +300 100 Noise Floor vs. Frequency Close Loop Gain (dB) +6 +4 +2 +0 -2 -4 -6 -8 -10 10 100 1k Gain +260 RL= 8Ω, BTL +180 Phase Noise Floor ( µVrms) +220 Phase(°) 10 +140 +100 RL= 32Ω, SE VDD=5V RL=32Ω AV=-2V/V Po=60mW SE 10k 100k +60 +20 1 20 100 VDD=3.3V BW=22Hz to 22kHz AV=-1V/V 1k 10k 20k Frequency (Hz) Frequency (Hz) Noise Floor vs. Frequency 100 350 300 250 200 150 100 Power Dissipation vs. Output Power RL= 8Ω, BTL 10 RL= 32Ω, SE Power Dissipation (mW) RL=8Ω Noise Floor (µVrms) VDD =5V BW=22Hz to 22kHz AV=-1V/V 1 20 100 1k 10k 20k RL=32Ω 50 0 0 200 400 600 VDD=3.3V BTL Frequency (Hz) Output Power (mW) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 18 www.anpec.com.tw APA0710/0711 Typical Characteristics (Cont.) Power Dissipation vs. Output Power 100 90 800 700 Power Dissipation vs. Output Power Power Dissipation (mW) 80 70 60 50 40 30 20 10 0 0 50 RL=8Ω Power Dissipation (mW) RL=8Ω 600 500 400 300 200 100 0 RL=32Ω RL=32Ω VDD=5V BTL 0 200 400 600 800 1000 VDD=3.3V SE 100 150 Output Power (mW) Output Power (mW) Power Dissipation vs. Output Power 200 180 RL=8Ω Power Dissipation (mW) 160 140 120 100 80 60 40 20 0 0 50 100 150 200 250 300 RL=32Ω VDD=5V SE Output Power (mW) Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 19 www.anpec.com.tw APA0710/0711 Application Descriptions BTL Operation supply, no need DC voltage exists across the load. This eliminates the need for an output coupling capacitor which is required in a single supply, SE configuration. Single-Ended Operation RL Vo- Vo+ OP1 Vbias OP2 Figure1: APA0710/1 power amplifier internal configuration The power amplifier OP1 gain is setting by external gain setting, while the second amplifier OP2 is internally fixed in a unity-gain, inverting configuration. Figure 1 shows that the output of OP1 is connected to the input to OP2, which results in the output signals of with both amplifiers with identical in magnitude, but out of phase 180°. Consequently, the differential gain for each channel is 2X (Gain of SE mode). By driving the load differentially through outputs Vo+ and Vo-, an amplifier configuration commonly referred to as bridged mode is established. BTL mode operation is different from the classical single-ended SE amplifier configuration where one side of its load is connected to ground. A BTL amplifier design has a few distinct advantages over the SE configuration, as it provides differential drive to the load, thus doubling the output swing for a specified supply voltage. Four times the output power is possible as compared to a SE amplifier under the same conditions. A BTL configuration, such as the one used in APA0710, also creates a second advantage over SE amplifiers. Since the differential outputs, Vo+, Vo- are biased at halfCopyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 Consider the single-supply SE configuration shown Application Circuit. A coupling capacitor is required to block the DC offset voltage from reaching the load. These capacitors can be quite large (approximately 33µF to 1000µF) so they tend to be expensive, occupy valuable PCB area, and have the additional drawback of limiting low-frequency performance of the system (refer to the Output Coupling Capacitor). The rules described still hold with the addition of the following relationship : 1 1 1 ≤ 2KV, VMM > 200V 10ms, 1tr > 1 00mA Carrier Tape & Reel Dimensions t P P1 D Po E F W Bo Ao Ko D1 Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 28 www.anpec.com.tw APA0710/0711 Carrier Tape & Reel Dimensions(Cont.) T2 J C A B T1 Application A 330±1 B 62 ± 1.5 D M/SOP-8 F 5.5 ± 0.1 C 12.75 + 0.1 5 D1 J 2 + 0.5 Po T1 12.4 +0.2 P1 2.0 ± 0.1 T2 2± 0.2 Ao 6.4 ± 0.1 W 12 + 0.3 - 0.1 Bo 5.2± 0.1 P 8± 0.1 Ko E 1.75± 0.1 t 1.55±0.1 1.55+ 0.25 4.0 ± 0.1 2.1 ± 0.1 0.3±0.013 (mm) Cover Tape Dimensions Application SOP- 8 M SOP- 8 Carrier Width 12 12 Cover Tape Width 9.3 9.3 Devices Per Reel 2500 3000 Customer Service Anpec Electronics Corp. Head Office : No.6, Dusing 1st Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. Tel : 886-2-89191368 Fax : 886-2-89191369 Copyright © ANPEC Electronics Corp. Rev. A.5 - O ct ., 2 005 29 www.anpec.com.tw