NCP2809 NCP2809A NCP2809B NCP2809/D JESD22/A114 JESD22/A115 JESD78 D12CRCW

NOCAPt 135 mW Stereo Headphone Power Amplifier The NCP2809 is a cost-effective stereo audio power amplifier capable of delivering

NCP2809 NCP2809 Series NOCAPt 135 mW Stereo Headphone Power Amplifier The NCP2809 NCP2809 is a cost-effective stereo audio power amplifier capable of delivering 135 mW of continuous average power per channel into 16 W loads. The NCP2809 NCP2809 audio power amplifier is specifically designed to provide high quality output power from low supply voltage, requiring very few external components. Since NCP2809 NCP2809 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. NCP2809A NCP2809A has an internal gain of 0 dB while specific external gain can externally be set with NCP2809B NCP2809B. If the application allows it, the virtual ground provided by the device can be connected to the middle point of the headset (Figure 1). In such case, the two external heavy coupling capacitors typically used can be removed. Otherwise, you can also use both outputs in single ended mode with external coupling capacitors (Figure 43). Due to its excellent Power Supply Rejection Ratio (PSRR), it can be directly connected to the battery, saving the use of an LDO. http://onsemi.com MARKING DIAGRAM Micro10 DM SUFFIX CASE 846B 10 MAx AYW 1 X = E for NCP2809A NCP2809A X = C for NCP2809B NCP2809B A = Assembly Location Y = Year W = Work Week Features · · · · · · · · 135 mW to a 16 W Load from a 5.0 V Power Supply Excellent PSRR (85 dB Typical): Direct Connection to the Battery "Pop and Click" Noise Protection Circuit Ultra Low Current Shutdown Mode 2.2 V5.5 V Operation Outstanding Total Harmonics Distortion + Noise (THD+N): Less than 0.01% External Turn-on and Turn-off Configuration Capability Thermal Overload Protection Circuitry PIN CONNECTIONS IN_R 1 10 SD BYP 2 3 9 8 REF_I 4 7 VP 5 6 OUT_L IN_L OUT_R VM OUT_I Micro10 Typical Applications · · · · ORDERING INFORMATION Cellular Phone Portable Stereo MP3 Player Personal and Notebook Computers © Semiconductor Components Industries, LLC, 2004 April, 2004 - Rev. 6 See detailed ordering and shipping information in the package dimensions section on page 20 of this data sheet. 1 Publication Order Number: NCP2809/D NCP2809/D NCP2809 NCP2809 Series VP 1 mF CS VP CI AUDIO INPUT 20 kW 20 kW IN_L 390 nF VP - + + - BYPASS OUT_L OUT_I HEADPHONE JACK LEFT BYPASS VMC BRIDGE SLEEVE 1 mF Cbypass REF_I CI AUDIO INPUT RIGHT + - IN_R OUT_R 20 kW 390 nF 20 kW SHUTDOWN VIH VM VIL SHUTDOWN CONTROL Figure 1. NCP2809A NCP2809A Typical Application Schematic without Output Coupling Capacitor (NOCAP Configuration) VP 1 mF CS VP AUDIO INPUT CI 20 kW IN_L 390 nF VP BYPASS AUDIO INPUT CI - + OUT_L + - BYPASS VMC BRIDGE 1 mF 20 kW OUT_I Cout REF_I + - IN_R OUT_R HEADPHONE JACK LEFT NC NC 220 mF + SLEEVE RIGHT Cout 20 kW 390 nF 220 mF + 20 kW SHUTDOWN VIH VIL SHUTDOWN CONTROL VM Figure 2. NCP2809A NCP2809A Typical Application Schematic with Output Coupling Capacitor TIP (LEFT) RING SLEEVE (RIGHT) Figure 3. Typical 3-Wire Headphone Plug http://onsemi.com 2 NCP2809 NCP2809 Series 20 kW VP 1 mF AUDIO INPUT CI 20 kW CS VP IN_L 390 nF VP - + + - BYPASS OUT_L OUT_I HEADPHONE JACK LEFT BYPASS VMC BRIDGE SLEEVE 1 mF Cbypass REF_I RIGHT AUDIO INPUT CI 20 kW + - IN_R OUT_R 390 nF SHUTDOWN SHUTDOWN CONTROL VM VIH VIL 20 kW Figure 4. NCP2809B NCP2809B Typical Application Schematic without Output Coupling Capacitor (NOCAP Configuration) 20 kW VP 1 mF CS VP AUDIO INPUT CI 20 kW IN_L 390 nF 1 mF Cbypass AUDIO INPUT 20 kW VMC BRIDGE OUT_I + - 390 nF SHUTDOWN OUT_R HEADPHONE JACK LEFT NC SLEEVE NC 220 mF + RIGHT Cout SHUTDOWN CONTROL VIH VIL Cout REF_I IN_R 220 mF + OUT_L + - BYPASS BYPASS CI - + VP VM 20 kW Figure 5. NCP2809B NCP2809B Typical Application Schematic with Output Coupling Capacitor http://onsemi.com 3 NCP2809 NCP2809 Series PIN FUNCTION DESCRIPTION Pin Type Symbol 1 I IN_R 2 I SHUTDOWN 3 I BYPASS 4 O REF_I 5 I IN_L Negative input of the first amplifier. It receives the audio input signal. Connected to the input capacitor Cin (NCP2809A NCP2809A) or the external Rin (NCP2809B NCP2809B). 6 O OUT_L Stereo headset amplifier analog output left. This pin will output the amplified analog signal and, depending on the application, must be coupled with a capacitor or directly connected to the left loudspeaker of the headset. This output is able to drive a 16 W load in a single-ended configuration. 7 I VP 8 O OUT_I 9 I VM 10 O OUT_R Description Negative input of the second amplifier. It receives the audio input signal. Connected to the input capicator Cin (NCP2809A NCP2809A) or the external Rin (NCP2809B NCP2809B). The device enters in shutdown mode when a a low level is applied on this pin. Bypass capacitor pin which provides the common mode voltage (VP/2). Virtual ground amplifier feed back. This pin sets the stereo headset ground. In order to improve crosstalk, this pin must be connected as close as possible to the ground connection of the headset (ideally at the ground pin of the headset connector). When one uses bypassing capacitors, this pin must be left unconnected. Positive analog supply of the cell. Range: 2.2 V 5.5 V Virtual ground for stereo Headset common connection. This pin is directly connected to the common connection of the headset when use of bypassing capacitor is not required. When one uses bypassing capacitors, this pin must be left unconnected. Analog Ground Stereo headset amplifier analog output right. This pin will output the amplified analog signal and, depending on the application, must be coupled with a capacitor or directly connected to the right loudspeaker of the headset. This output is able to drive a 16 W load in a single-ended configuration. MAXIMUM RATINGS (TA = +25°C) Rating Symbol Value Unit Vp 6.0 V Op Vp 2.2 to 5.5 V Input Voltage Vin -0.3 to VCC + 0.3 V Max Output Current Iout 250 mA Power Dissipation Pd Internally Limited - Operating Ambient Temperature TA -40 to +85 °C Max Junction Temperature TJ 150 °C Tstg -65 to +150 °C RqJA 200 °C/W - 8000 200 V ±100 mA Supply Voltage Operating Supply Voltage Storage Temperature Range Thermal Resistance, Junction-to-Air ESD Protection Micro10 Human Body Model (HBM) (Note 1) Machine Model (MM) (Note 2) Latch up current at Ta = 85_C (Note 3) Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If stress limits are exceeded device functional operation is not implied, damage may occur and reliability may be affected. Functional operation should be restricted to the Recommended Operating Conditions. 1. Human Body Model, 100 pF discharged through a 1.5 kW resistor following specification JESD22/A114 JESD22/A114 8.0 kV can be applied on OUT_L, OUT_R, REF_I and OUT_I outputs. For other pins, 2.0 kV is the specified voltage. 2. Machine Model, 200 pF discharged through all pins following specification JESD22/A115 JESD22/A115. 3. Maximum ratings per JEDEC standard JESD78 JESD78. *This device contains 752 active transistors and 1740 MOS gates. http://onsemi.com 4 NCP2809 NCP2809 Series ELECTRICAL CHARACTERISTICS All the parameters are given in the capless configuration (typical application). The following parameters are given for the NCP2809A NCP2809A and NCP2809B NCP2809B mounted externally with 0 dB gain, unless otherwise noted. (For typical values TA = 25°C, for min and max values TA = -40°C to 85°C, TJmax = 125°C, unless otherwise noted.) Characteristic Supply Quiescent Current Symbol Conditions IDD Min (Note 4) Max (Note 4) 1.54 1.84 2.8 3.6 1.0 +25 mV 10 Vin = 0 V, RL = 16 W Vp = 2.4 V Vp = 5.0 V Typ 600 nA Unit mA Output Offset Voltage Voff Vp = 2.4 V Vp = 5.0 V Shutdown Current ISD Vp = 5.0 V Shutdown Voltage High (Note 5) VSDIH - Shutdown Voltage Low VSDIL - Turning On Time (Note 6) TWU Cby = 1.0 mF 285 ms Turning Off Time (Note 6) TSD Cby = 1.0 mF and Vp = 5.0 V 385 ms Vloadpeak Vp = 2.4 V, RL = 16 W Vp = 5.0 V, RL = 16 W 0.9 2.05 V Max Output Swing -25 1.2 V 0.4 0.82 1.94 Vp = 2.4 V, RL = 32 W Vp = 5.0 V, RL = 32 W Voltage Gain POrms 1.04 2.26 Vp = 2.4 V, RL = 16 W, THD+N