TS489IQT STMicroelectronics, TS489IQT Datasheet - Page 27

IC AMP AUDIO PWR .13W STER 8DFN

TS489IQT

Manufacturer Part Number
TS489IQT
Description
IC AMP AUDIO PWR .13W STER 8DFN
Manufacturer
STMicroelectronics
Type
Class ABr
Datasheet

Specifications of TS489IQT

Output Type
Headphones, 2-Channel (Stereo)
Max Output Power X Channels @ Load
130mW x 2 @ 16 Ohm
Voltage - Supply
2.2 V ~ 5.5 V
Features
Depop, Short-Circuit Protection, Standby
Mounting Type
Surface Mount
Package / Case
8-DFN
For Use With
497-6363 - BOARD DEMO FOR TS489
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-5991-2
TS488-TS489
Connecting the headphones
Note:
With the values above, the result is F
In this case, τ
This value is sufficient with regard to the previous formula, thus we can state that the pop is
imperceptible.
Generally headphones are connected using jack connectors. To prevent a pop in the
headphones when plugging in the jack, a pulldown resistor should be connected in parallel
with each headphone output. This allows the capacitors C
headphones are not plugged in.
Pulldown resistors with a value of 1 kΩ are high enough to be a negligible load, and low
enough to charge the capacitors C
The pop&click reduction circuitry works properly only when both channels have the same
value for the external components C
in
= R
in
x C
in
=6.6ms.
out
in
CL
, C
in less than one second.
=25Hz.
out
, R
load
and R
pulldown
out
to be charged even when the
.
Application information
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