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TDA7297

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TDA7297

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Part Number TDA7297
Manufacturer STMicroelectronics
Description IC AMP AUDIO 15W AB MULTIWATT15
Datasheet TDA7297 Datasheet
Package Multiwatt-15 (Vertical, Bent and Staggered Leads)
In Stock 5,636 piece(s)
Unit Price $ 3.6600 *
Lead Time Can Ship Immediately
Estimated Delivery Time Nov 27 - Dec 2 (Choose Expedited Shipping)
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Part Number # TDA7297 (Linear - Amplifiers - Audio) is manufactured by STMicroelectronics and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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TDA7297 Specifications

ManufacturerSTMicroelectronics
CategoryIntegrated Circuits (ICs) - Linear - Amplifiers - Audio
Datasheet TDA7297Datasheet
PackageMultiwatt-15 (Vertical, Bent and Staggered Leads)
Series-
TypeClass AB
Output Type2-Channel (Stereo)
Max Output Power x Channels @ Load15W x 2 @ 8 Ohm
Voltage - Supply6.5 V ~ 18 V
FeaturesMute, Short-Circuit and Thermal Protection, Standby
Mounting TypeThrough Hole
Operating Temperature0°C ~ 70°C (TA)
Supplier Device Package15-Multiwatt
Package / CaseMultiwatt-15 (Vertical, Bent and Staggered Leads)

TDA7297 Datasheet

Page 1

Page 2

TDA7297 15+15W DUAL BRIDGE AMPLIFIER WIDE SUPPLY VOLTAGE RANGE (6V -18V) MINIMUM EXTERNAL COMPONENTS – NO SVR CAPACITOR – NO BOOTSTRAP – NO BOUCHEROT CELLS – INTERNALLY FIXED GAIN STAND-BY & MUTE FUNCTIONS SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION DESCRIPTION The TDA7297 is a dual bridge amplifier specially designed for TV and Portable Radio applications. September 2003 ® 1 2 4 Vref ST-BY 7 IN1 0.22µF VCC 133 D94AU175B + - - + OUT1+ OUT1- 15 14 12 MUTE 6 IN2 0.22µF + - - + OUT2+ OUT2- 8 9 S-GND PW-GND 470µF 100nF BLOCK AND APPLICATION DIAGRAM Multiwatt 15 ORDERING NUMBER: TDA7297 TECHNOLOGY BI20II 1/9

Page 3

1 2 3 4 5 6 7 9 10 11 8 N.C. N.C. S-GND PW-GND ST-BY MUTE N.C. IN1 VCC OUT1- OUT1+ 13 14 15 12 OUT2+ OUT2- VCC IN2 D95AU261 PIN CONNECTION (Top view) ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VS Supply Voltage 20 V IO Output Peak Current (internally limited) 2 A Ptot Total Power Dissipation (Tcase = 70°C) 33 W Top Operating Temperature 0 to 70 °C Tstg, Tj Storage and Junction Temperature -40 to +150 °C THERMAL DATA Symbol Description Value Unit Rth j-case Thermal Resistance Junction to case Typ. 1.4 Max. 2 °C/W ELECTRICAL CHARACTERISTICS (VCC = 16.5V, RL = 8Ω, f = 1kHz, Tamb = 25°C unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit VCC Supply Range 6.5 18 V Iq Total Quiescent Current RL = ∞ 50 65 mA VOS Output Offset Voltage 120 mV PO Output Power THD = 10% 13 15 W THD Total Harmonic Distortion PO = 1W 0.1 0.3 % PO = 0.1W to 5W f = 100Hz to 15kHz 1 % SVR Supply Voltage Rejection f = 100Hz VR = 0.5V 40 56 dB CT Crosstalk 46 60 dB AMUTE Mute Attenuation 60 80 dB TW Thermal Threshold 150 °C GV Closed Loop Voltage Gain 31 32 33 dB ∆Gv Voltage Gain Matching 0.5 dB Ri Input Resistance 25 30 KΩ TDA7297 2/9

Page 4

1 2 4 Vref ST-BY 7 IN1 C1 0.22µF VCC 133 D95AU258A + - - + OUT1+ OUT1- 15 14 12 MUTE 6 IN2 C3 0.22µF + - - + OUT2+ OUT2- 8 9 S-GND PW-GND C5 470µF C6 100nF R1 10K C2 10µF µP R2 10K C4 1µF Figure 1: Microprocessor Application ELECTRICAL CHARACTERISTICS (Continued) Symbol Parameter Test Condition Min. Typ. Max. Unit VTMUTE Mute Threshold VO = -30dB 2.3 2.9 4.1 V VTST-BY St-by Threshold 0.8 1.3 1.8 V IST-BY ST-BY current V6 = GND 100 µA eN Total Output Noise Voltage A curve f = 20Hz to 20kHz 150 220 500 µV µV APPLICATION SUGGESTION STAND-BY AND MUTE FUNCTIONS (A) Microprocessor Application In order to avoid annoying "Pop-Noise" during Turn-On/Off transients, it is necessary to guaran- tee the right St-by and mute signals sequence. It is quite simple to obtain this function using a mi- croprocessor (Fig. 1 and 2). At first St-by signal (from mP) goes high and the voltage across the St-by terminal (Pin 7) starts to increase exponentially. The external RC network is intended to turn-on slowly the biasing circuits of the amplifier, this to avoid "POP" and "CLICK" on the outputs. When this voltage reaches the St-by threshold level, the amplifier is switched-on and the external capacitors in series to the input terminals (C3, C5) start to charge. It’s necessary to mantain the mute signal low until the capacitors are fully charged, this to avoid that the device goes in play mode causing a loud "Pop Noise" on the speakers. A delay of 100-200ms between St-by and mute signals is suitable for a proper operation. TDA7297 3/9

Page 5

+VS(V) VIN (mV) VST-BY pin 7 Iq (mA) ST-BY MUTE PLAY MUTE ST-BY +18 1.8 0.8 VMUTE pin 6 4.1 2.3 OFF OFF D96AU259 VOUT (V) 2.9 1.3 Figure 2: Microprocessor Driving Signals. (B) Low Cost Application In low cost applications where the mP is not pre- sent, the suggested circuit is shown in fig.3. The St-by and mute terminals are tied together and they are connected to the supply line via an external voltage divider. The device is switched-on/off from the supply line and the external capacitor C4 is intended to delay the St-by and mute threshold exceeding, avoiding "Popping" problems. TDA7297 4/9

Page 6

1 2 4 Vref ST-BY 7 IN1 C3 0.22µF VCC 133 D95AU260A + - - + OUT1+ OUT1- 15 14 12 MUTE 6 IN2 C5 0.22µF + - - + OUT2+ OUT2- 8 9 S-GND PW-GND C1 470µF C2 100nF R1 47K C4 10µF R2 47K Figure 3: Stand-alone Low-cost Application. Figure 3b: PCB and Component Layout of the Application Circuit (Fig. 1). TDA7297 5/9

Page 7

0.010 0.1 1 10 0.1 1 10 20 THD(%) Vcc = 16.5V Rl = 8 ohm f = 15KHz f = 5KHz f = 1KHz Pout (W) Figure 4: Distortion vs Output Power 0.010 0.1 1 10 0.1 1 10 THD(%) Vcc = 12 V Rl = 8 ohm f = 15KHz f = 5KHz f = 1KHz Pout (W) Figure 5: Distortion vs Output Power 0.010 0.1 1 10 100 1k 10k 20k THD(%) Vcc = 16.5V R l = 8 ohm Pout = 100m W Pout = 5W frequency (Hz) Figure 6: Distortion vs Frequency -5.000 -4.000 -3.000 -2.000 -1.000 0.0 1.0000 2.0000 3.0000 4.0000 5.0000 10 100 1k 10k 100k Level(dBr) frequency (Hz) Vcc = 16 .5V R l = 8 ohm Pou t = 1W Figure 7: Frequency Respone 0.0 2.0000 4.0000 6.0000 8.0000 10 .000 12 .000 14 .000 16 .000 18 .000 20 .000 6.000 7.000 8.000 9.000 10.00 11 .00 12.00 13.00 14.00 15 .00 16.00 17 .00 18.00 Po(W ) Vs(V) R l = 8 ohm f = 1K H z d = 10% d = 1% Figure 8: Output Power vs Supply Voltage 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 0 2 4 6 8 10 12 14 16 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Ptot(W) µ(%) 2XPout(W) Vcc = 16.5V Rl = 8ohm (both channels) f = 1KHz P tot µ Figure 9: Total Power Dissipation & Efficiency vs Output Power TDA7297 6/9

Page 8

6 7 8 9 10 11 12 13 14 15 16 17 18 30 35 40 45 50 55 60 65 70 Iq (mA) Vsupply(V) Figure 12: Quiscent Current vs. Supply Voltage 1 1.5 2 2.5 3 3.5 4 4.5 5 0 10 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 Attenuation (dB) Vpin.6(V) Figure 10: Mute Attenuation vs. V pin.6 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 0 10 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 Attenuation (dB) Vpin.7 (V) Figure 11: Stand-By Attenuation vs Vpin.7 TDA7297 7/9

Page 9

Multiwatt15 V DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 0.063 D 1 0.039 E 0.49 0.55 0.019 0.022 F 0.66 0.75 0.026 0.030 G 1.02 1.27 1.52 0.040 0.050 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0.772 H2 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.870 0.886 L2 17.65 18.1 0.695 0.713 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L7 2.65 2.9 0.104 0.114 M 4.25 4.55 4.85 0.167 0.179 0.191 M1 4.63 5.08 5.53 0.182 0.200 0.218 S 1.9 2.6 0.075 0.102 S1 1.9 2.6 0.075 0.102 Dia1 3.65 3.85 0.144 0.152 OUTLINE AND MECHANICAL DATA TDA7297 8/9

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Lyric*****rmick

November 16, 2020

Excellent ! TDA7297 item arrived very quickly and was packaged well, no issues.

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