TS4990ID STMicroelectronics, TS4990ID Datasheet - Page 21

• Manufacturer Part Number: TS4990ID
• Description: IC AMP AUDIO PWR 1.2W MON 8SOIC
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS4990ID

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1.2W x 1 @ 8 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Features: Depop, Differential Inputs, Standby, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono
• Output Power (typ): 1.2x1@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.2@8Ohm@1W%
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Supply Current (max): 6@5VmA
• Power Supply Requirement: Single
• Unity Gain Bandwidth Product (typ): 1.5MHz
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 64dB
• 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: 8
• Package Type: SO
• For Use With: 497-6383 - BOARD DEMO FOR TS4990
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TS4990
4.6
Note:
4.7
Wake-up time (t
When the standby is released to put the device ON, the bypass capacitor C
immediately. Because C
properly until the C
or t
If C
time.
Figure 61. Typical wake-up time vs. C
Due to process tolerances, the maximum value of wake-up time is shown in
Figure 62. Maximum wake-up time vs. C
The bypass capacitor C
time with this tolerance, refer to the graph above (considering for example for C
range of 0.8 µF
Standby time
When the standby command is set, the time required to put the two output stages in high
impedance and the internal circuitry in standby mode is a few microseconds. In standby
mode, the bypass pin and V
allows a quick discharge of C
WU
b
has a value other than 1 µF, refer to the graph in
and specified in the electrical characteristics tables with C
≤
C
b
b
≤
1.2 µF).
voltage is correct. The time to reach this voltage is called wake-up time
WU
b
b
also has a typical tolerance of +/-20%. To calculate the wake-up
600
500
400
300
200
100
is directly linked to the bias of the amplifier, the bias will not work
600
500
400
300
200
100
0
)
in
0
0.1
0.1
b
Tamb=25 ° C
pin are short-circuited to ground by internal switches. This
Tamb=25 ° C
and C
1
1
in
Vcc=2.6V
capacitors.
Bypass Capacitor Cb ( F)
Vcc=2.6V
Bypass Capacitor Cb ( F)
b
b
2
2
Vcc=3.3V
Vcc=3.3V
3
3
Figure 61
Vcc=5V
Vcc=5V
4
4
to establish the wake-up
b
4.7
Application information
= 1 µF.
4.7
b
Figure
is not charged
b
=1 µF in the
62.
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