BL6212 1. 3 Watt Audio Power Amplifier Features Improved PSRR at 217 Hz 68 dB Power output at 5.0V, 1% THD+N, 8Ω 1.3 W (typ.) Power output at 3.0V, 1% THD+N, 8Ω 480 mW (typ.) Ultra low shutdown current 0.1 uA (typ.) 2.2V – 5.5V operation Improved circuitry eliminates pop-click noise during turn-on and turn-off transitions Excellent RFI (Radio Frequency Interference) immunity No output coupling capacitors, snubber networks or bootstrap capacitors required Unity-gain stable External gain configuration capability Available in space-saving packages: CSP9 General Description The BL6212 is a Class-AB audio power amplifier designed for mobile phones and other portable communication devices. It is capable of delivering 1.3 watts of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply. The BL6212 was designed specifically to provide high quality output power with a minimal amount of external components. It does not require output coupling capacitors or bootstrap capacitors. And with ultra low shutdown current, the BL6212 is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement. With special pop-click eliminating circuit, the BL6212 provides perfect pop-click characteristic during turn-on and turn-off transitions. The BL6212 is unity-gain stable and can be configured by external gain-setting resistors. Applications Wireless handsets Portable electronic devices PDAs, Handheld computers Order Information Part Number BL6212CP http://www.belling.com.cn Package 9 Bump WLCSP -1- Shipping 3000 pcs / Tape & Reel Total 10 Pages BL6212 Pin Diagrams 9 Bump WLCSP Package (Top View ) A INN Vout1 9 Bump WLCSP Marking (Top View ) INP B GND GND VDD C BP Vout2 SHD YWK BAA Y – Year Code 1 2 WK - Week Code BAA - BL6212V2 9-BUMP ROHS - 3 Pin Description No. Pin Name I/O A1 INN I Negative Input A2 Vout1 O Negative BTL Output A3 INP I Positive Input B1/B2 GND I/O Ground B3 VDD I/O Power Supply (2.2 – 5.5 V) C1 BP I/O Analog ground for inner OPAs. It’s about a half of VDD. C2 Vout2 O Positive BTL Output I Shout-down Logical Control, ‘0’ is active. C3 http://www.belling.com.cn Description -2- Total 10 Pages BL6212 Typical Application Circuit Rf = 20 kΩ Audio In Ri = 20 kΩ INN Vout1 Ci = 0.39 µF 20 kΩ INP 20 kΩ RL Vout2 BIAS VDD VDD Cs = 1 µF GND Pop-Click Cb = 1 µF BP Temp_Prt SHD Shudown Control FIGURE 1. BL6212 Typical Application Circuit Rf = 20 kΩ Ci = 0.39 µF Ri = 20 kΩ INN Vout1 Audio In 20 kΩ INP Ci = 0.39 µF Ri = 20 kΩ 20 kΩ RL 20 kΩ Vout2 BIAS VDD VDD Temp_Prt Cs = 1 µF GND Pop-Click Cb = 1 µF BP SHD Shudown Control FIGURE 2. BL6212 Differential Amplifier Configuration http://www.belling.com.cn -3- Total 10 Pages BL6212 External Components Description Components Functional Description Ri Inverting input resistance which sets the closed-loop gain in conjunction with Rf. This resistor also forms a high pass filter with Ci at fc = 1/(2πRi*Ci). Ci Input coupling capacitor which blocks the DC voltage at the amplifiers input terminates. Also creates a high-pass filter with Ri at fc = 1/(2πRi*Ci). Rf Feedback resistance which sets the closed-loop gain in conjunction with Ri. Cs Supply bypass capacitor which provides power supply filtering. Cb Bypass pin capacitor which provides half-supply filtering. Refer to the section. Absolute Maximum Ratings Operating Ratings Supply Voltage -0.3V to 6V Input Voltage -0.3V to VDD+0.3V Power Dissipation See Dissipation Rating Table Junction Temperature -40℃ to +150℃ Storage Temperature -65℃ to +150℃ Thermal Resistance θJA(9-BUMP) 90℃/W Temperature Range Supply Voltage -40℃≦TA≦85℃ 2.2V≦VDD≦5.5V NOTE: Absolute Maximum Ratings indicate limits beond which damage to the device may occur. Operating Rating indicate conditions for which the device is functional, but do not guarantee specific performance limits. http://www.belling.com.cn -4- Total 10 Pages BL6212 Electrical Characteristics The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for TA = 25℃. VDD = 5V Spec Symbol IDD ISD Parameter Quiescent Power Conditions Supply Current Typ. Max. Units VIN = 0V, 8Ω Load 3.6 8 mA VIN = 0V, No Load 3.3 7 mA 0.1 2 uA VIN=0V, VSHD=GND, Shutdown Current Mi n. No Load VSDIH Shutdown Voltage Input High 0.88 V VSDIL Shutdown Voltage Input Low 0.73 V VOS THD+N PO -50 Output Offset Voltage Total Harmonic Distortion+Noise Po=0.5Wrms, THD+N<=1%, Output Power f=1KHz, Input terminated with 10Ω, PSRR Power Supply Rejection Ratio VDDRIPPLE=0.2VP-P, f=217Hz Input terminated with 10Ω, VDDRIPPLE=0.2VP-P, f=1KHz 50 mV 0.13 % 0.9 1.30 W 55 68 dB 55 63 dB f=1KHz, 8Ω Load 6 TWU Wake-up time 106 ms ROUT Resistor Output to GND 8.3 kΩ VDD = 3V Spec Symbol IDD ISD Parameter Quiescent Power Conditions Supply Current Typ. Max. Units VIN = 0V, 8Ω Load 3.0 7 mA VIN = 0V, No Load 2.6 6 mA 0.1 2 uA VIN=0V, VSHD=GND, Shutdown Current Mi n. No Load VSDIH Shutdown Voltage Input High 0.80 V VSDIL Shutdown Voltage Input Low 0.67 V VOS THD+N -50 Output Offset Voltage Total Distortion+Noise http://www.belling.com.cn Harmonic Po=0.25Wrms, -5- f=1KHz, 6 0.10 50 mV % Total 10 Pages BL6212 PO THD+N<=1%, Output Power f=1KHz, Input terminated with 10Ω, PSRR 480 mW 55 68 dB 55 63 dB 8Ω Load Power Supply Rejection Ratio VDDRIPPLE=0.2VP-P, f=217Hz Input terminated with 10Ω, VDDRIPPLE=0.2VP-P, f=1KHz TWU Wake-up time 84 ms ROUT Resistor Output to GND 8.3 kΩ VDD = 2.6V Spec Symbol IDD Parameter Quiescent Power Shutdown Current VOS Output Offset Voltage PO Supply Current ISD THD+N Conditions Total Mi n. 2.7 mA VIN = 0V, No Load 2.5 mA 0.1 uA No -50 Harmonic Po=0.15Wrms, THD+N<=1%, Power Supply Rejection Ratio VDDRIPPLE=0.2VP-P, f=1KHz mV 365 mW 55 67 dB 55 62 dB 8Ω Load Input terminated with 10Ω, 50 % f=1KHz, VDDRIPPLE=0.2VP-P, f=217Hz 4 0.12 f=1KHz, Input terminated with 10Ω, PSRR Units 8Ω Load Load Output Power Max. VIN = 0V, VIN=0V, VSHD=GND, Distortion+Noise Typ. TWU Wake-up time 80 ms ROUT Resistor Output to GND 8.3 kΩ http://www.belling.com.cn -6- Total 10 Pages BL6212 Typical Performance Characteristics http://www.belling.com.cn -7- Total 10 Pages BL6212 http://www.belling.com.cn -8- Total 10 Pages BL6212 http://www.belling.com.cn -9- Total 10 Pages BL6212 Package Dimensions WLCSP 9 PACKAGE http://www.belling.com.cn - 10 - Total 10 Pages