TDA7491HV13TR STMicroelectronics, TDA7491HV13TR Datasheet - Page 34

• Manufacturer Part Number: TDA7491HV13TR
• Description: IC AMP AUD CLASS D BTL PWRSSO36
• Manufacturer: STMicroelectronics
• Type: Class Dr

Specifications of TDA7491HV13TR

• Output Type: 2-Channel
• Max Output Power X Channels @ Load: 20W x 2 @ 8 Ohm
• Voltage - Supply: 5 V ~ 18 V
• Features: Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Surface Mount
• Package / Case: *
• Amplifier Class: D
• No. Of Channels: 2
• Output Power: 20W
• Supply Voltage Range: 5V To 18V
• Thd + N: 0.1% @ 1W, 8ohm, VCC=18V
• Load Impedance: 8ohm
• Operating Temperature Range: 0°C To +70°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-11055-2

Application information
7.2
7.3
34/41
Gain setting
The gain of the TDA7491HV is set by the two inputs, GAIN0 (pin 30) and GAIN1 (pin 31).
Internally, the gain is set by changing the feedback resistors of the amplifier.
Table 8.
1. Refer to V
Input resistance and capacitance
The input impedance is set by an internal resistor Ri = 68 kΩ (typical). An input capacitor
(Ci) is required to couple the AC input signal.
The equivalent circuit and frequency response of the input components are shown in
Figure
Figure 53. Device input circuit and frequency response
L(1)
L
H
H
fc = 1 / (2 * π * Ri * Ci)
53. For Ci = 220 nF the high-pass filter cut-off frequency is below 20 Hz:
inL and VinH in
GAIN0
Gain settings
Input
signal
Table 5: Electrical specifications on page 10
Doc ID 14242 Rev 5
H(1)
H
L
H
Ci
Input
pin
GAIN1
Ri
for drive levels for L and H
Rf
20
26
30
32
Nominal gain, G
TDA7491HV
v
(dB)