TS4961TIQT STMicroelectronics, TS4961TIQT Datasheet - Page 38

• Manufacturer Part Number: TS4961TIQT
• Description: IC AMP AUDIO PWR 1.95W D 16QFN
• Manufacturer: STMicroelectronics
• Type: Class Dr

Specifications of TS4961TIQT

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1.95W x 1 @ 4 Ohm
• Voltage - Supply: 2.4 V ~ 4.3 V
• Features: Depop, Differential Inputs, Standby
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• For Use With: 497-8932 - BOARD EVAL FOR TS4961T
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8388-2

Application component information
4.5
4.6
4.7
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Shutdown time (t
When the standby command is set, the time required to put the two output stages into high
impedance and to put the internal circuitry in standby mode, is about 5 ms. This time is used
to decrease the gain and avoid any pop noise during shutdown.
Consumption in standby mode
Between the shutdown pin and GND there is an internal 300 kΩ resistor. This resistor forces
the TS4961T to switch to standby mode when the standby input is left floating.
However, this resistor also introduces additional power consumption if the standby pin
voltage is not 0 V.
Single-ended input configuration
The TS4961Tcan be used in a single-ended input configuration, but input coupling
capacitors are necessary.
Figure 76. Typical single-ended input application
All formulas are identical except for the gain (with R
Due to the internal resistor tolerance, A
In the event that multiple single-ended inputs are summed, it is important that the
impedance on both TS4961 inputs (In
GND
Ve
GND
Standby
Cin
Cin
STBY
Figure 76
Rin
Rin
TS4961T(Audio Amplifier Part)
)
15
12
16
shows a typical single-ended input application.
Stdby
In-
In+
A
-
V
and In
Vsingle
300k
+
-
sin
150k
150k
gle
273
--------- - A
R
Oscillator
Internal
in
Bias
=
+
is in the range of:
≤
) be equal.
------------------------------ -
Out
V
PWM
+
sin
V
in
–
gle
e
Out
in kΩ) :
≤
327
--------- -
R
-
Output
in
Bridge
=
VCCA
GNDA
GND
H
7
300
--------- -
6
R
Out+
Out-
in
5
8
GND
Vcc
SPEAKER
Csa
1uF
TS4961T