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TA2022 Datasheet(PDF) 6 Page - Tripath Technology Inc. |
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TA2022 Datasheet(HTML) 6 Page - Tripath Technology Inc. |
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6 / 31 page  Tr i p ath Technol ogy, I n c. - Techni cal I n for m ati on 6 TA2022 – KLI/1.2/07-04 TA2022 PINOUT PIN DESCRIPTION Pin Function Description 1, 13 VBOOT2, VBOOT1 Bootstrap voltages for gate drive of high side MOSFET’s 2 VN10 “Floating” supply input. Normally connected to the output of onboard VN10 buck converter. This voltage must be stable and referenced to VNN. 3 VN10GND Power ground for onboard VN10 generator. Electrically tied to the TA2022 case. 4, 12 VPP2, VPP1 Positive power supply input pins. 5 VN10SW Switching output voltage for onboard VN10 generator (buck converter). 6 NC Not connected internally. May be connected to pin 7 without any loss of functionality or performance. 7,10 OUT2, OUT1 Power amplifier outputs. 8, 9 VNN2, VNN1 Negative power supply inputs. 11 NC Not connected internally. May be connected to pin 10 without any loss of functionality or performance. 14 VN10FDBK Feedback for onboard VN10 generator (nominally 11V above VNN) 15, 20 AGND Analog Ground. 16, 21 V5 5V power supply input. 17 REF Used to set internal bias currents. The pin voltage is typically 1.1V. 18 VNNSENSE Negative supply voltage sense input. This pin is used for both over and under voltage sensing for the VNN supply. 19 VPPSENSE Positive supply voltage sense input. This pin is used for both over and under voltage sensing for the VPP supply. 22, 25 OAOUT1, OAOUT2 Outputs of Input Stage op amps. 23, 26 INV1, INV2 Inverting inputs of Input Stage op amps. 24 MUTE Logic input. A logic high puts the amplifier in mute mode. Ground pin if not used. Please refer to the section, Mute Control, in the Application Information. 27 BIASCAP Bandgap reference times two (typically 2.5VDC). Used to set the common mode voltage for the input op amps. This pin is not capable of driving external circuitry. 28, 29 FBKGND2, FBKOUT2 Output voltage differential feedback for channel 2. 30,31 FBKGND1, FBKOUT1 Output voltage differential feedback for channel 1. 32 HMUTE Logic Output. A logic high indicates both amplifiers are muted, due to the mute pin state, or a “fault” such as an overcurrent, undervoltage, or overvoltage condition. FBKGND1 AGND VNNSENSE VPPSENSE AGND V5 OAOUT1 INV1 MUTE OAOUT2 INV2 VBOOT2 BIASCAP FBKGND2 FBKOUT2 FBKOUT1 V5 VN10FDBK VBOOT1 VPP1 NC OUT1 VNN1 VNN2 OUT2 NC VPP2 VN10GND VN10 HMUTE 30 16 17 18 19 20 21 22 23 24 25 26 27 28 29 1 15 14 13 11 10 12 9 8 7 6 5 4 3 2 32-pin SSIP Package (Front View) 32 31 REF VN10SW |
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