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TDA7265

Dual Audio Power Amplifier

The TDA7265 is a dual audio power amplifier from STMicroelectronics. View the full TDA7265 datasheet below including key specifications, absolute maximum ratings.

Official TDA7265 datasheet (PDF) — the source this page was extracted from.

Manufacturer

STMicroelectronics

Category

Dual Audio Power Amplifier

Package

Multiwatt-11 (Vertical, Bent and Staggered Leads)

Lifecycle

Production (Last Updated: 4 months ago)

TDA7265 Key Specifications

ParameterValue
Bandwidth22 kHz
China RoHSNon-Compliant
Contact PlatingLead, Tin
Dual Supply Voltage24 V
FeaturesDepop, Mute, Short-Circuit and Thermal Protection, Standby
Gain30 dB
Height10.7 mm
Input Bias Current500 nA
Input Offset Voltage (Vos)20 mV
Introduction Date1980-01-04
Length19.6 mm
Lifecycle StatusProduction (Last Updated: 4 months ago)
Load Impedance4 Ω
Max Dual Supply Voltage25 V
Max Operating Temperature85 °C
Max Output Power25 W
Max Output Power x Channels @ Load25W x 2 @ 8Ohm
Max Power Dissipation30 W
Max Supply Current130 mA
Max Supply Voltage25 V
Min Dual Supply Voltage5 V
Min Operating Temperature-20 °C
Min Supply Voltage5 V
MountThrough Hole
Mounting TypeThrough Hole
Nominal Supply Current4.5 A
Number of Channels2
Number of Circuits1
Number of Outputs2
Number of Pins11
Number of Terminals11
Operating Temperature-20°C ~ 85°C (TA)
Output Power25 W
Output Type2-Channel (Stereo)
Package / CaseMultiwatt-11 (Vertical, Bent and Staggered Leads)
PackagingRail/Tube
Power Dissipation30 W
Power Supply Rejection Ratio (PSRR)60 dB
Quiescent Current80 mA
Radiation HardeningNo
REACH SVHCNo
RoHSCompliant
Supplier Device Package11-Multiwatt
Supply TypeDual
Terminal Pitch1.7 mm
TypeClass AB
Supply Voltage±5V ~ 25V
Voltage Gain80 dB
Weight8.164663 g
Width5 mm

TDA7265 Overview

Part: TDA7265 — STMicroelectronics

Type: Dual Audio Power Amplifier

Description: Class-AB dual audio power amplifier delivering up to 25 W + 25 W into 8 Ω with mute and standby features for Hi-Fi systems and stereo TVs.

Operating Conditions:

  • Supply voltage: ±5 to ±25 V
  • Operating temperature: -20 to 85 °C

Absolute Maximum Ratings:

  • Max supply voltage: ±25 V
  • Max continuous current: 4.5 A (peak, internally limited)
  • Max junction/storage temperature: -40 to +150 °C

Key Specs:

  • Output power: 25 W per channel (THD = 10%, RL = 8 Ω, VS = ±20 V)
  • Output power: 20 W per channel (THD = 1%, RL = 8 Ω, VS = ±20 V)
  • Music output power: 32 W (THD = 10%, RL = 8 Ω, VS = ±22.5 V)
  • Total harmonic distortion (THD): 0.01% (RL = 8 Ω, PO = 1 W, f = 1 kHz)
  • Quiescent current: 80 mA typical, 130 mA max
  • Standby quiescent current: 3 mA typical
  • Slew rate: 10 V/μs
  • Open loop voltage gain: 80 dB
  • Supply voltage rejection (SVR): 60 dB (fr = 100 Hz, Vr = 0.5 V)

Features:

  • Split or single supply operation
  • No pop noise at turn-on/off
  • Pop-free mute function
  • Standby mode with low quiescent current
  • Short-circuit protection
  • Thermal overload protection (thermal shutdown at Tj = 145 °C)

Applications:

  • Hi-Fi music centers
  • Stereo TV sets

Package:

  • Multiwatt11

TDA7265 Applications

(Demo Board Schematic)

The recommended values of the external compo- nents are those shown are the demo board schematic different values can be used: the following table can help the designer.

COMPONENTSRECOMMENDED VALUEPURPOSELARGER THAN RECOMMENDED VALUESMALLER THAN RECOMMENDED VALUE
R110K WMute CircuitIncrease of Dz Biasing Current
R215K WMute CircuitVpin # 5 Shifted DownwardVpin # 5 Shifted Upward
R318K WMute CircuitVpin # 5 Shifted UpwardVpin # 5 Shifted Downward
R415K WMute CircuitVpin # 5 Shifted UpwardVpin # 5 Shifted Downward
R5, R818K WClosed Loop Gain Setting (*)Increase of Gain
R6, R9560 WClosed Loop Gain Setting (*)Decrease of Gain
R7, R104.7 WFrequency StabilityDanger of OscillationsDanger of Oscillations
C1, C21 m FInput DC DecouplingHigher Low Frequency Cutoff
C31 m FSt-By/Mute Time ConstantLarger On/Off TimeSmaller On/Off Time
C4, C61000 m FSupply Voltage BypassDanger of Oscillations
C5, C70.1 m FSupply Voltage BypassDanger of Oscillations
C8, C90.1 m FFrequency Stability
Dz5.1VMute Circuit
Q1BC107Mute Circuit

TDA7265 Absolute Maximum Ratings

SymbolParameterValueUnit
V SDC Supply Voltage- 25V
I OOutput Peak Current (internally limited)4.5A
P totPower Dissipation T case = 70 C30W
T opOperating Temperature-20 to 85C
T stg , T jStorage and Junction Temperature-40 to +150C

TDA7265 Thermal Information

SymbolDescriptionDescriptionValueUnit
R th j-caseThermal Resistance Junction-caseMax2C/W

Fig 2: Typical Application Circuit in Single Supply

ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS = + 20V; RL = 8 W ; RS = 50 W ; GV = 30dB; f = 1KHz; Tamb = 25 C, unless otherwise specified.)

SymbolParameterTest ConditionMin.Typ.Max.Unit
V SSupply Range+5+25V
I qTotal Quiescent Current80130mA
V OSInput Offset Voltage-20+20mV
I bNon Inverting Input Bias Current500nA
P OMusic Output Power (*)THD = 10%; R L = 8 W ; V S = + 22.5V32W
P OOutput PowerTHD = 10% R L = 8 W ; V S + 16V; R L = 4 W2025 25W W
P OOutput PowerTHD = 1% R L = 8 W ; V S + 16V; R L = 4 W20 20W W
THDTotal Harmonic DistortionR L = 8 W ; P O = 1W; f = 1KHz0.01%
THDTotal Harmonic DistortionR L = 8 W ; P O = 0.1 to 15W; f = 100Hz to 15KHz0.7%
THDTotal Harmonic DistortionR L = 4 W ; P O = 1W; f = 1KHz0.02%
THDTotal Harmonic DistortionR L = 4 W ; V S + 16V; P O = 0.1 to 12W; f = 100Hz to 15KHz1%
C TCross Talkf = 1KHz f = 10KHz70 60dB dB
SRSlew Rate10V/ m s
G OLOpen Loop Voltage Gain80dB
e NTotal Input NoiseA Curve f = 20Hz to 22KHz3 48m V m V
R iInput Resistance1520K W
SVRSupply Voltage Rejection (each channel)fr = 100Hz Vr = 0.5V60dB
T jThermal Shut-down Junction Temperature145C
MUTE FUNCTION [ref: +V S ]MUTE FUNCTION [ref: +V S ]MUTE FUNCTION [ref: +V S ]MUTE FUNCTION [ref: +V S ]MUTE FUNCTION [ref: +V S ]MUTE FUNCTION [ref: +V S ]MUTE FUNCTION [ref: +V S ]
VT MUTEMute / Play Threshold-7-6-5V
A MMute Attenuation6070dB
STAND-BY FUNCTION [ref: +V S ]STAND-BY FUNCTION [ref: +V S ]STAND-BY FUNCTION [ref: +V S ]STAND-BY FUNCTION [ref: +V S ]STAND-BY FUNCTION [ref: +V S ]STAND-BY FUNCTION [ref: +V S ]STAND-BY FUNCTION [ref: +V S ]
VT ST-BYStand-by / Mute Threshold-3.5-2.5-1.5V
A ST-BYStand-by Attenuation110dB
I q ST-BYQuiescent Current @Stand-by3mA

is the maximal power which the amplifier is capable of producing across the rated load resistance (regardless of non linearity)

Note : (*) FULL POWER up to. VS = -22.5V with RL = 8 W and VS = -16V with RL = 4 W MUSIC POWER 1 sec after the application of a sinusoidal input signal of frequency 1KHz.

Figure 3: Quiescent Current vs. Supply Voltage

Figure 5: Output Power vs. Supply Voltage

Figure 7: Output Power vs. Supply Voltage

Figure 4: Frequency Response

Figure 6: T.H.D. vs. Output Power

Figure 8: T.H.D. vs. Output Power

Figure 9: Quiescent Current vs. Pin # 5 Voltage

Figure 11: SVR vs. Frequency

Figure 13: Power Dissipaton vs. Output Power

Figure 10: Attenuation vs. Pin # 5 Voltage

Figure 12: Crosstalk vs. Frequency

Figure 14: Power Dissipaton vs. Output Power

More datasheets

All STMicroelectronics datasheets (808)

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