TPA711 700-mW Mono, Class-AB Audio Amplifier with Mono Headphone Drive | TI.com

TPA711 (ACTIVE) 700-mW Mono, Class-AB Audio Amplifier with Mono Headphone Drive

700-mW Mono, Class-AB Audio Amplifier with Mono Headphone Drive - TPA711
Datasheet
 

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Description

The TPA711 is a bridge-tied load (BTL) or single-ended (SE) audio power amplifier developed especially for low-voltage applications where internal speakers and external earphone operation are required. Operating with a 3.3-V supply, the TPA711 can deliver 250-mW of continuous power into a BTL 8- load at less than 0.6% THD+N throughout voice band frequencies. Although this device is characterized out to 20 kHz, its operation is optimized for narrower band applications such as wireless communications. The BTL configuration eliminates the need for external coupling capacitors on the output in most applications, which is particularly important for small battery-powered equipment. A unique feature of the TPA711 is that it allows the amplifier to switch from BTL to SE on the fly when an earphone drive is required. This eliminates complicated mechanical switching or auxiliary devices just to drive the external load. This device features a shutdown mode for power-sensitive applications with special depop circuitry to eliminate speaker noise when exiting shutdown mode. The TPA711 is available in an 8-pin SOIC and the surface-mount PowerPAD MSOP package, which reduces board space by 50% and height by 40%.

Features

  • Fully Specified for 3.3-V and 5-V Operation
  • Wide Power Supply Compatibility 2.5 V – 5.5 V
  • Output Power
    • 700 mW at VDD = 5 V, BTL, RL = 8
    • 85 mW at VDD = 5 V, SE, RL = 32
    • 250 mW at VDD = 3.3 V, BTL, RL = 8
    • 37 mW at VDD = 3.3 V, SE, RL = 32
  • Shutdown Control
    • IDD = 7 uA at 3.3 V
    • IDD = 50 uA at 5 V
  • BTL to SE Mode Control
  • Integrated Depop Circuitry
  • Thermal and Short-Circuit Protection
  • Surface-Mount Packaging
    • SOIC
    • PowerPAD™ MSOP

PowerPAD is a trademark of Texas Instruments.

Parametrics

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Part number Order Audio input type Architecture Speaker channels (Max) Power stage supply (Min) (V) Power stage supply (Max) (V) Output power (W) Load (Min) (ohms) THD + N @ 1 kHz (%) Iq (Typ) (mA) Control interface Closed/open loop Analog supply (Min) (V) Analog supply (Max) (V) PSRR (dB) Operating temperature range (C) Rating
TPA711 Order now Analog Input     Class-AB     Mono     2.5     5.5     0.7     8     0.5     1.25     Hardware     Closed     2.5     5.5     85     -40 to 85     Catalog    
TPA701 Order now Analog Input     Class-AB     Mono     2.5     5.5     0.7     8     0.5     1.25     Hardware     Closed     2.5     5.5     85     -40 to 85     Catalog    
TPA721 Samples not available Analog Input     Class-AB     Mono     2.5     5.5     0.7     8     0.5     1.25     Hardware     Closed     2.5     5.5     85     -40 to 85     Catalog    
TPA741 Samples not available Analog Input     Class-AB     Mono     2.5     5.5     0.7     8     0.5     1.45     Hardware     Closed     2.5     5.5     85     -40 to 85     Catalog    
TPA751 Order now Analog Input     Class-AB     Mono     2.5     5.5     0.7     8     0.5     1.45     Hardware     Closed     2.5     5.5     85     -40 to 85     Catalog