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TS4974 Datasheet(PDF) 1 Page - STMicroelectronics |
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TS4974 Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 8 page November 2004 Revision 1 1/8 s Operating from V CC = 2.5V to 5.5V s Zero pop&clickless circuit s 1.W output power @ Vcc=5V, THD=1%, F=1kHz, with 8 Ω Load s Ultra low consumption in standby mode (2µA max.) s 85dB PSRR @ 217Hz s 16 digital volume control steps s Two up and down volume control discrete pins s Gain range from -33dB to + 12dB s Integrated debouncing system s Ultra fast start up time: 15ms typ. s DFN10 3X3 mm pitch 0.5 Description At 3.3v, the TS4974 is a dual power audio amplifier capable of delivering 380mW of continuous RMS ouput power into a 8 Ω bridged- tied loads with 1% THD+N. An external standby mode control reduces the supply current to less than 2µA. An internal over-temperature shutdown protection is provided. The TS4974 has been designed for high quality audio applications such as mobile phones and for minimizing the number of external components. The TS4974 features a 16 step digital volume control through two discrete control Up and Down pins. The start-up gain is internally fixed to -12dB. An integrated debounce system prevents voltage pikes on UP/DOWN pins during volume control mode to be taken into account during a debounce time of 10ms (typ.). Pin Connections (top view) Applications s Mobile phones (cellular / cordless) s PDAs s Laptop/notebook computers s Portable audio devices Order Codes TS4974IQ - Pinout TS4974IQ DFN Package 1 2 3 4 10 BYPASS VIN- UP / DVC VCC STANDBY 5 9 8 7 6 DOWN / DVC GND VIN+ VOUT- VOUT+ 1 2 3 4 10 BYPASS VIN- UP / DVC VCC STANDBY STANDBY 5 9 8 7 6 DOWN / DVC GND VIN+ VOUT- VOUT+ Part Number Temperature Range Package Packaging Marking TS4974IQT -40, +85°C QFN Tape & Reel TBA PRODUCT PREVIEW TS4974 This is preliminary information on a new product now in development. Details are subject to change without notice. 1W Differential Audio Power Amplifier with Up/Down Digital Volume Control Pins |
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