TS4890IST STMicroelectronics

TS4890 Rail-to-rail output 1 W audio power amplifier with standby mode active low Datasheet - production data The unity-gain stable amplifier can be configured 62 0LQL62 by external gain setting resistors. (1) Table 1. Device summary 76 , 7 76 ,67 Part number Temp. range Marking TS4890IDT 4890 -40 + 85 C Features TS4890IST 4890I Operating from V = 2.2 V to 5.5 V CC 1. Available in tape and reel only. 1 W rail-to-rail output power V = 5 V, CC THD=1%, f=1 kHz, with 8 load Ultra low consumption in standby mode (10 nA) 75 dB PSSR 217 Hz from 5 to 2.2 V Pop and click reduction circuitry Ultra low distortion (0.1%) Unity gain stable Available in SO8 and MiniSO8 Applications Mobile phones (cellular/cordless) Laptop/notebook computers PDAs Portable audio devices Description The TS4890 is an audio power amplifier, which can deliver 1 W of continuous RMS output power into 8 W load 5 V. This audio amplifier shows 0.1% distortion level (THD) from a 5 V supply for a P = 250 mW out RMS. An external standby mode control reduces the supply current to less than 10 nA. An internal thermal shutdown protection is also provided. The TS4890 has been designed for high quality audio applications such as mobile phones, and to minimize the number of external components. February 2019 DocID8396 Rev 7 1/46 This is information on a product in full production. www.st.comContents TS4890 Contents 1 General information . 7 1.1 Pin connections (top view) . 7 1.2 Typical application schematic . 7 2 Absolute maximum ratings . 9 3 Electrical characteristics 10 4 Electrical characteristics curves 13 5 Application information . 31 5.1 BTL configuration principle 32 5.2 Gain in typical application schematic 33 5.3 Low and high frequency response 33 5.4 Power dissipation and efficiency . 34 5.5 Decoupling of the circuit 35 5.6 Pop and click performance 35 5.7 Power amplifier design examples . 36 6 Package information 42 6.1 SO8 package information (TS4890IDT) 42 6.2 MiniSO8 package information (TS4890IST) . 43 7 Revision history . 45 2/46 DocID8396 Rev 7