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TA2170FLG 数据表(PDF) 5 Page - Toshiba Semiconductor |
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TA2170FLG 数据表(HTML) 5 Page - Toshiba Semiconductor |
5 / 13 page TA2170FLG 2006-04-19 5 Application Notes 1. Mute switch and voltage gain This IC is designed to ensure there is no perceptible change in volume whether a single output or several outputs are used. When the input signal to the three buffer amplifiers is the same and in a linear domain, the relation between the mute switches and voltage gain is as follows: Test condition: VCC = 3 V, f = 1 kHz, Vin = −20 dBV, theoretical value. (1) 1-input mode Attenuation to an input signal (dB) MUTE SW BUF1 BUF2 BUF3 Total gain (dB) MUTE1 MUTE1A MUTE2 MUTE3 Ach Bch Ach Bch Ach Bch Ach Bch Input signal is applied to BUF 1. OFF OFF ON ON 0 0 ⎯ ⎯ ⎯ ⎯ 0 0 OFF OFF OFF ON −6 −6 ⎯ ⎯ ⎯ ⎯ −6 −6 OFF OFF ON OFF −6 −6 ⎯ ⎯ ⎯ ⎯ −6 −6 OFF OFF OFF OFF −9.5 −9.5 ⎯ ⎯ ⎯ ⎯ −9.5 −9.5 OFF ON ON ON ⎯ 0 ⎯ ⎯ ⎯ ⎯ ⎯ 0 OFF ON OFF ON ⎯ −6 ⎯ ⎯ ⎯ ⎯ ⎯ −6 OFF ON ON OFF ⎯ −6 ⎯ ⎯ ⎯ ⎯ ⎯ −6 OFF ON OFF OFF ⎯ −9.5 ⎯ ⎯ ⎯ ⎯ ⎯ −9.5 Input signal is applied to BUF 2 ON ON/OFF OFF ON ⎯ ⎯ 0 0 ⎯ ⎯ 0 0 ON ON/OFF OFF OFF ⎯ ⎯ −6 −6 ⎯ ⎯ −6 −6 OFF OFF OFF ON ⎯ ⎯ −6 −6 ⎯ ⎯ −6 −6 OFF ON OFF ON ⎯ ⎯ 0 −6 ⎯ ⎯ 0 −6 OFF OFF OFF OFF ⎯ ⎯ −9.5 −9.5 ⎯ ⎯ −9.5 −9.5 OFF ON OFF OFF ⎯ ⎯ −6 −9.5 ⎯ ⎯ −6 −9.5 Input signal is applied to BUF 3. ON ON/OFF ON OFF ⎯ ⎯ ⎯ ⎯ 0 0 0 0 ON ON/OFF OFF OFF ⎯ ⎯ ⎯ ⎯ −6 −6 −6 −6 OFF OFF ON OFF ⎯ ⎯ ⎯ ⎯ −6 −6 −6 −6 OFF ON ON OFF ⎯ ⎯ ⎯ ⎯ 0 −6 0 −6 OFF OFF OFF OFF ⎯ ⎯ ⎯ ⎯ −9.5 −9.5 −9.5 −9.5 OFF ON OFF OFF ⎯ ⎯ ⎯ ⎯ −6 −9.5 −6 −9.5 |
类似零件编号 - TA2170FLG |
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类似说明 - TA2170FLG |
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