APA2068 手册(APA2068).pdf-资料库

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APA2068 TEL:0755-82863877 13242913995 E-MAIL:panxia168@126.com Stereo 2.6W Audio Power Amplifier (with DC_Volume Control) Features General Description • Low Operating Current with 9mA • Improved Depop Circuitry to Eliminate Turn-on and Turn-off Transients in Outputs • High PSRR • 32 Steps Volume Adjustable by DC Voltage with Hysteresis • 2.6W per Channel Output Power into 4W Load at 5V,BTL Mode • Two Output Modes Allowable with BTL and SE Modes Selected by SE/BTL pin • Low Current Consumption in Shutdown Mode (1m A) • Short Circuit Protection • Thermal shutdown protection and over current protection circuitry • Maximum Output Swing Clamping Function • SOP-16-P Packages with Thermal Pad Package • Lead Free Available (RoHS Compliant) APA2068 is a monolithic integrated circuit, which provides precise DC volume control, and a stereo bridged audio power amplifiers capable of producing 2.6W (1.8W) into 4W with less than 10% (1.0%)THD+N. The attenuator range of the volume control in APA2068 is from 20dB (DC_Vol=0V) to -80dB (DC_Vol=3.54V) with 32 steps. The advantage of internal gain setting can be less components and PCB area. Both of the depop circuitry and the thermal shutdown protection circuitry are integrated in APA2068, that reduce pops and clicks noise during power up or shutdown mode operation. It also improves the power off pop noise and protects the chip from being destroyed by over temperature and short current failure. To simplify the audio system design, APA2068 combines a stereo bridge-tied loads (BTL) mode for speaker drive and a stereo single-end (SE) mode for headphone drive into a single chip, where both modes are easily switched by the SE/BTL input control pin signal. Applications • NoteBook PC • LCD Monitor or TV Ordering and Marking Information APA2068 Lead Free Code Handling Code Temp. Range Package Code Package Code KA : SOP-16-P Operating Ambient Temp. Range I : - 40 to 85 C Handling Code TU : Tube TR : Tape & Reel Lead Free Code L : Lead Free Device Blank : Original Device APA2068 KA : APA2068 XXXXX 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. 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. h l Rev. A.2 - Jul., 2005 1 t

APA2068 Block Diagram V O L M A X LIN- RIN- VOLUME V o l u m e C o n t r o l B Y P A S S SE/BTL SE/BTL SHUTDOWN MUTE S h u t d o w n c k t M u t e P o w e r a n d D e p o p c i r c u i t A P A 2 0 6 8 _ B l o c k LOUT+ LOUT- B Y PA S S ROUT+ ROUT- V D D GND Absolute Maximum Ratings (Over operating free-air temperature range unless otherwise noted.) Symbol VDD VIN TA TJ TSTG TS VESD PD Parameter Supply Voltage Range Input Voltage Range, SE/BTL, SHUTDOWN, Mute 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 Intermal Limited*1 -65 to +150 260 -3000 to 3000*2 -200 to 200*3 Intermal Limited Unit V V C C C C V Notes: 1.APA2068 integrated internal thermal shutdown protection when junction temperature ramp up to 150°C 2.Human body model: C=100pF, R=1500W 3.Machine model: C=200pF, L=0.5m F, 3 positive pulses plus 3 negative pulses Recommended Operating Conditions , 3 positives pulse plus 3 negative pulses Supply Voltage, VDD High level threshold voltage, VIH Low level threshold voltage, VIL Common mode input voltage, VICM SHUTDOWN, Mute SE/BTL SHUTDOWN, Mute SE/BTL Min. Max. Unit 4.5 2 4 VDD-1.0 5.5 1.0 3 V V V V Rev. A.2 - Jul., 2005

APA2068 Thermal Characteristics Symbol RTHJA Parameter Thermal Resistance from Junction to Ambient in Free Air SOP-16-P Value 45 Unit C/W Electrical Characteristics VDD=5V, -20°C

APA2068 Electrical Characteristics (Cont.) Operating Characteristics, SE mode. VDD=5V,TA=25°C, Gain=1V/V (unless otherwise noted) Symbol Parameter Test Condition , Fin=1kHz , Fin=1kHz , Fin=1kHz , Fin=1kHz , Fin=1kHz , Fin=1kHz , CB=1m F, THD=10%, RL=16W THD=10%, RL=32W THD=1%, RL=16W THD=1%, RL=32W PO=125mW, RL=16W PO=65mW, RL=32W VIN=0.1Vrms, RL=8W Fin=120Hz CB=1m F, RL=32W PO=75mW, SE, RL=32W APA2068 Min. Typ. Max. Unit 220 120 160 95 0.09 0.09 60 60 100 mW % dB dB dB PO Maximum Output Power THD+N Total Harmonic Distortion Plus Noise PSRR Power Ripple Rejection Ratio Xtalk Channel Separation S/N Signal to Noise Ratio Pin Description MUTE 1 SHUTDOWN 2 RIN- 3 BYPASS 4 GND 5 LIN- 6 VOLUME 7 VOLMAX 8 , Fin=1kHz , A_wieght 16 ROUT- 15 VDD 14 ROUT+ 13 SE/BTL 12 GND 11 LOUT+ 10 VDD 9 LOUT- APA2068 Thermal Pad Pin Function Description (Connected to GND for better heat dissipation) Pin Name MUTE SHUTDOWN RIN- BYPASS GND LIN- VOLUME No. 1 2 3 4 5,12 6 7 8 VOLMAX I Config Function Description to mute. It will be into shutdown mode when pull low. ISD = 1m A Right channel input terminal Bias voltage generator I Mute control signal input, hold low for normal operation, hold high I I I - Ground connection, Connected to thermal pad. I I Left channel input terminal Input signal for internal volume gain setting. Setting the maximum output swing. Input a non-zero voltage (VC) to this pin, the output voltage swing will be clamped between VOH (the maximum positive value) - VC & VOL (the minimum negative value) + VC. Disable this function when tie this pin to GND. Maximum input voltage £ 1/2 VDD. Rev. A.2 - Jul., 2005

APA2068 Pin Function Description (Cont.) Pin Name LOUT- VDD LOUT+ SE/BTL No. 9 10,15 11 13 14 16 ROUT+ ROUT- Control Input Table Config Function Description Left channel positive output in BTL mode and SE mode. Supply voltage Left channel negative output in BTL mode and high impedance in SE mode. O - O I Output mode control input, high for SE output mode and low for O Right channel negative output in BTL mode and high impedance O Right channel positive output in BTL mode and SE mode. BTL mode. in SE mode. SHUTDOWN Mute SE/BTL L H H H X L L H Typical Application Circuit X L H X Operating mode Shutdown mode BTL out SE out Mute V DD 0.1 m F 100m F VDD GND VOLMAX Signal VOLMAX 1 m F LIN- 1 m F RIN- L-CH Input R-Ch Input Volume Control V DD V DD 100k W SE/BTL Signal 50kW 100k W VOLUME SE/BTL Shutdow n Signal SHUTDOWN MUTE Signal MUTE SE/BTL Shutdown ckt Mute LOUT+ 4W LOUT- 220 m F 1k W SE/BTL Signal BYPASS BYPASS 2.2 m F ROUT+ Control Pin Ring Sleeve Tip Headphone Jack 220 m F 1k W 4 W ROUT- A2068_AppCkt Rev. A.2 - Jul., 2005 5

APA2068 Volume Control Table_BTL Mode Supply Voltage Vdd=5V Gain(dB) High(V) Low(V) Hysteresis(mV) Recommended Voltage(V) 20 18 16 14 12 10 8 6 4 2 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 -22 -24 -26 -28 -30 -32 -34 -36 -38 -40 -80 0.12 0.23 0.34 0.46 0.57 0.69 0.80 0.91 1.03 1.14 1.25 1.37 1.48 1.59 1.71 1.82 1.93 2.05 2.16 2.28 2.39 2.50 2.62 2.73 2.84 2.96 3.07 3.18 3.30 3.41 3.52 5.00 0.00 0.17 0.28 0.39 0.51 0.62 0.73 0.84 0.96 1.07 1.18 1.29 1.41 1.52 1.63 1.74 1.85 1.97 2.08 2.19 2.30 2.42 2.53 2.64 2.75 2.87 2.98 3.09 3.20 3.32 3.43 3.54 52 51 50 49 47 46 45 44 43 41 40 39 38 37 35 34 33 32 30 29 28 27 26 24 23 22 21 20 18 17 16 0 0.20 0.31 0.43 0.54 0.65 0.77 0.88 0.99 1.10 1.22 1.33 1.44 1.56 1.67 1.78 1.89 2.01 2.12 2.23 2.35 2.46 2.57 2.69 2.80 2.91 3.02 3.14 3.25 3.36 3.48 5 Rev. A.2 - Jul., 2005

APA2068 Typical Characteristics THD+N vs. Output Power THD+N vs. Output Power VDD = 5V Av =20dB f = 1KHz BTL RL = 8W RL = 4W RL = 3W 10 1 0.1 ) ( % N + D H T VDD = 5V Av =14dB f = 1KHz SE 10 1 0.1 RL = 32W RL = 16W ) ( % N + D H T 0.01 0 0.5 1 1.5 2.5 Output Power (W) 2 3 3.5 0.01 0 40m 120m 160m 80m Output Power (W) 200m 240m THD+N vs. Output Power THD+N vs. Output Power ) ( % N + D H T VDD = 5V F =1KHz RL =3W BTL 10 1 0.1 0.01 0 0.5 Av = 20dB Av = 6dB 1.5 1 Output Power (W) 2 2.5 VDD = 5V Av =20dB RL =3W BTL 10 1 ) ( % N + D H T 0.1 0.05 10m 3 3.5 f = 20KHz f = 20Hz f = 1KHz 1 100m Output Power (W) 5 Rev. A.2 - Jul., 2005

APA2068 Typical Characteristics (Cont.) THD+N vs. Frequency THD+N vs. Frequency VDD = 5V RL =3W Po = 1.8W BTL 10 1 0.1 Av = 20dB Av = 6dB ) ( % N + D H T VDD = 5V Av = 6dB RL =3W BTL 10 1 0.1 Po = 0.9W Po = 1.8W ) ( % N + D H T 0.01 20 100 1k 10k 20k 0.01 20 100 1k 10k 20k Frequency (Hz) Frequency (Hz) THD+N vs. Output Power THD+N vs. Output Power 10 1 0.1 VDD = 5V F =1KHz RL =4W BTL Av = 20dB Av = 6dB ) ( % N + D H T VDD = 5V Av =20dB RL =4W BTL 10 1 0.1 F = 20KHz F = 20Hz F = 1KHz ) ( % N + D H T 0.01 0 0.5 1.5 1 Output Power (W) 2 2.5 3 3.5 0.01 10m 1 100m Output Power (W) 5 Rev. A.2 - Jul., 2005

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