TDA7498E Class-D Audio Amplifier

TDA7498E is a class-D audio amplifier commonly used for stereo applications and mono BTL applications. It is available in dual BTL with a power output of 160W + 160W. It can be used as mono BTL with a power output of 220W. It has 36 pins package with exposed pin-up (EPU) with a separate heatsink.

TDA7498E is a high-frequency amplifier. It has four selectable fixed gain settings. It has an overcurrent protection circuit to protect the device from unwanted current peaks. The device will automatically shut down when the current exceeded a threshold value. When the fault is removed, the device will recover automatically.

 

TDA7498E Pinout Configuration 

Pin No.	Pin Name	Pin Description	Channel
1	SUB_GND	Connect to the frame
2,3	OUTPB	Positive PWM	right channel
4,5	PGNDB	Power stage ground
6,7	PVCCB	Power supply
8,9	OUTNB	Negative PWM output
10,11	OUTNA	Negative PWM output	left channel
12,13	PVCCA	Power supply
14,15	PGNDA	Power stage ground
16,17	OUTPA	Positive PWM output
18	PGND	Power stage ground
19	VDDPW	3.3-V (nominal) regulator output referred to the ground for power stage
20	STBY	Standby mode control
21	MUTE	Mute mode control
22	INPA	Positive differential input	left channel
23	INNA	Negative differential input
24	ROSC	Master oscillator frequency-setting pin
25	SYNCLK	Clock in/out for external oscillator
26	VDDS	3.3-V (nominal) regulator output referred to ground for signal blocks
27	SGND	Signal ground
28	DIAG	Open-drain diagnostic output
29	SVR	Supply voltage rejection
30	GAIN	Gain setting input
31	MODE	Enables stereo or mono BTL mode of operation
32	INPB	Positive differential input	right channel
33	INNB	Negative differential input
34	VREF	Half VDDS (nominal) referred to ground
35	SVCC	Signal power supply
36	VSS	3.3-V (nominal) regulator output referred to a power supply

 

Features & Specifications 

• 160W + 160W output power at THD = 10%, R_L = 4 Ω, V_CC = 36 V
• 1X220W output power mono parallel BTL at THD = 10%, RL = 3 Ω, V_CC = 36 V
• Wide-range single-supply operation (14 - 36 V)
• Maximum DC supply voltage V_CC: 45 V
• Maximum voltage for input pins: -0.3 to 4 V
• Total quiescent current I_q: 60 mA
• Output Power P_o: 160 W @ THD = 10%, 120 W @ THD = 1%
• Efficiency η = 85%
• Rise time and fall time: 35 ns
• Supply voltage rejection ratio (SVRR): 55 dB
• High efficiency (η = 85%)
• Small offset less than 20 mV
• Differential inputs minimize common-mode noise
• Parallel BTL function using the MODE pin
• Four selectable, fixed gain settings of nominally 23.8 dB, 29.8 dB, 33.3 dB, and 35.8 dB
• Standby and mute features
• Smart protection and Thermal overload protection

 

Function Modes of TDA7498E Audio Amplifier

This device works in three modes: Standby, Mute, and Play.

• Standby: STBY < 0.5 V, MUTE = X
• Mute: STBY > 2.5 V, MUTE < L
• Play: STBY > 2.5 V, MUTE > H

 

TDA7498E Audio Amplifier Equivalents

STEVAL-CCA044V1, TDA8953, TPA3116

 

Note: Complete technical details about this IC can be found in the TDA7498E datasheet, given at the end of the page.

 

How to Use TDA7498E Audio Amplifier

TDA7498E is a dual-channel amplifier. Hence, we can connect two speakers with this amplifier. The power of each channel is 160 W. If you want to connect only one speaker, you can connect with any channel. Here, two channels are named as the left channel and right channel.

You can connect the speaker directly with the audio jack given on the left side. Two audio input pins are available for each channel. There is a 3-pin dual-channel audio input beside the audio jack. You can connect the speaker with this pin also. There is another way to connect the speaker by direct +/- wire connection. On the right side of the board, we have three 2 pins. One pin is for the left channel, the second pin is for VCC/ground, and the third pin is for the right channel. There is a +/- notation behind these pins to connect the +/- wire of speakers.

You can find a potentiometer on the left side of the board. This potentiometer is used to control the voice of sound. There is a gain selector switch. By which we can set the output gain. Higher the gain loud the sound. Hence, for a high volume set both switches are at a high position.

 

Applications 

• Speaker output in LCD Monitors / TV Projectors
• Speaker output amplifier in Notebook Computers
• Can be used for Portable Speakers, Portable DVD Players, Game Machines
• Any possible amplifier-based project where small space and 5V output is available.

 

2D Model and Dimensions 

If you are designing a PCB or Perf board with this component then the following picture from the Datasheet will be useful to know its package type and dimensions.

Symbol	mm
	Min.	Typ.	Max.
A	2.15	-	2.45
A2	2.15	-	2.35
a1	0	-	0.1
b	0.18	-	0.36
c	0.23	-	0.32
D	10.1	-	10.5
E	7.4	-	7.6
e	-	0.5	-
e3	-	8.5	-
F	-	2.3	-
G	-	-	0.1
H	10.1	-	10.5
h	-	-	0.4
k	0	-	8 degrees
L	0.55	-	0.85
M	-	4.3	-
N	-	-	10 degrees
O	-	1.2	-
Q	-	0.8	-
S	-	2.9	-
T	-	3.65	-
U	-	1	-
X	4.1	-	4.7
Y	6.5	-	7.1