TS4909IQT STMicroelectronics, TS4909IQT Datasheet - Page 27

• Manufacturer Part Number: TS4909IQT
• Description: IC AMP AUDIO .158W STER AB 10DFN
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS4909IQT

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 158mW x 2 @ 16 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Features: Depop, Standby
• Mounting Type: Surface Mount
• Package / Case: 10-DFN
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Audio Amplifier Function: Headphone
• Total Harmonic Distortion: 0.3@16Ohm@90mW%
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Supply Current (max): 4.8@5VmA
• Power Supply Requirement: Single
• Power Dissipation: 1.79W
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 72dB
• Single Supply Voltage (min): 2.2V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 10
• Package Type: DFN
• For Use With: 497-6380 - BOARD DEMO FOR TS4909Q
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5992-2

TS4909
4.6
Note:
4.7
Wake-up time
When the standby is released to turn the device ON, the bypass capacitor C
immediately. As C
properly until the C
40ms (pop precaution) is called the wake-up time or t
characteristics tables with C
If C
read it directly from the graph in
●
●
Figure 82. Typical wake-up time vs. bypass capacitance
It is assumed the C
time is lower.
Pop performance
Pop performance in the phantom ground configuration is closely linked with the size of the
input capacitor C
values requested.
In order to reach low pop, C
rule, the equivalent input constant time (R
By following the previous rules, the TS4909 can reach low pop even with a high gain such as
20dB.
b
Single-ended configuration
Phantom ground configuration
has a value other than 1µF, you can calculate t
τ
in
= R
in
in
b
. The size of C
x C
b
b
is directly linked to the bias of the amplifier, the bias will not work
voltage is correct. The time to reach this voltage plus a time delay of
voltage is equal to 0 V. If the C
in
< 0.008 s
350
300
250
200
150
100
50
0
0
in
b
=1µF (see
T
must be charged to V
t
t
AMB
WU
WU
Figure
=25°C
in
=
=
is dependent on the lower cut-off frequency and PSRR
1
Cb
---------------------- -
Cb
---------------------- -
Single Ended
0.042
0.417
82.
Section 3: Electrical characteristics on page
⋅
⋅
in
2.5
2.5
C
2
in
+
+
) should be less then 8ms:
Cb
40
40
(
μ
F
CC
)
b
WU
[ms;μF ]
[ms;μF ]
Phantom Ground
3
WU
voltage is not equal 0 V, the wake-up
/2 in less than 40ms. To follow this
by using the following formulas, or
. It is specified in the electrical
4
Application information
5
b
is charged
5).
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