TAS5711

Part: TAS5711 (TAS5711PHPR) — Texas Instruments

Type: Digital Audio Power Amplifier (Class-D, with EQ, DRC, 2.1 mode)

Description: 20-W per channel digital-input Class-D audio amplifier with 8–26 V half-bridge supply, 3.3 V logic supply, 90% efficiency, 106 dB SNR, 21 programmable biquads and DRC.

Operating Conditions:

• Supply voltage: DVDD/AVDD 3–3.6 V; PVDD_x 8–26 V
• Operating ambient temperature: 0 to 85 °C
• Junction temperature: 0 to 125 °C (recommended)
• Load impedance (BTL): 6 Ω min, 8 Ω nominal; output inductance ≥ 10 μH under short-circuit condition
• MCLK frequency: 2.8224–24.576 MHz

Absolute Maximum Ratings:

• Supply voltage: DVDD, AVDD −0.3 to 3.6 V; PVDD_x −0.3 to 30 V
• OUT_x to PGND_x: 32 V; BST_x to PGND_x: 43 V
• Input clamp / output clamp current: ±20 mA
• Operating junction temperature: 0 to 150 °C
• Storage temperature: −40 to 125 °C

Key Specs:

• Output power (BTL, PVDD = 18 V, 8 Ω, 1 kHz): 21 W at 10% THD, 20 W at 7% THD
• Output power (PBTL, PVDD = 18 V, 4 Ω): 42.8 W at 10% THD
• THD+N (PVDD = 18 V, PO = 1 W): 0.06%
• SNR: 106 dB (A-weighted, maximum power at THD < 1%)
• Output integrated noise: 44 μV (A-weighted)
• Supply current, normal mode: DVDD/AVDD 48 mA typ (70 mA max); PVDD no load 30 mA typ (55 mA max)
• Output FET rDS(on): 180 mΩ (high-side and low-side, TJ = 25 °C)
• Overcurrent limit: 4.5 A typ (ROCP = 22 kΩ); undervoltage trip 7.2 V (PVDD falling); overtemperature error 150 °C

Features:

• 2.1 mode (2 SE + 1 BTL), 2.0 mode (2 BTL), and single-filter PBTL mode
• AD and BD modulation modes
• Up to 90% efficiency; no heatsink required
• One serial audio input (I²S/LJ/RJ), 8–48 kHz sample rates
• Independent channel volume controls; separate DRC for satellite and subchannels
• 21 programmable biquads for speaker EQ
• Autobank switching and automatic sample-rate detect
• I²C control with address select pin; control interface operates without MCLK
• Thermal and short-circuit protection
• Requires only 3.3 V and PVDD

Applications:

• Television
• iPod dock
• Sound bar

Package:

• 48-pin HTQFP (PHP), 7 mm × 7 mm

• 2 · Audio Input/Output
• Benefits
• -20-W Into an 8Ω Load From an 18-V Supply
• -Up to 90% Efficient
• -Wide PVDD Range, From 8 V to 26 V
• -AD and BD Filter Mode Support
• -Efficient Class-D Operation Eliminates Need for Heatsinks
• -One Serial Audio Input (Two Audio Channels)
• -2.1 Mode (2 SE + 1 BTL)
• -2.0 Mode (2 BTL)
• -Single-Filter PBTL Mode Support
• -I 2 C Address Selection Pin (Chip Select)
• -Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I 2 S)
• Audio/PWM Processing
• -Independent Channel Volume Controls With 24-dB to Mute
• -Separate Dynamic Range Control for Satellite and Subchannels
• -21 Programmable Biquads for Speaker EQ and Other Audio Processing Features
• -Programmable Coefficients for DRC Filters
• -SNR: 106 dB, A-Weighted
• -EQ: Speaker Equalization Improves Audio Performance
• -DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker Protection, Easy Listening, Night-Mode Listening.
• -Separate DRC for Satellite and Subchannels
• -Autobank Switching: Preload Coefficients for Different Sample Rates. No Need to Write new Coefficients to the Part When Sample Rate Changes.
• -Autodetect: Automatically Detects Sample-Rate Changes. No Need for External Microprocessor Intervention
• Requires Only 3.3 V and PVDD

• -DC Blocking Filters
• -Support for 3D Effects
• General Features
• -Serial Control Interface Operational Without MCLK
• -Factory-Trimmed Internal Oscillator for Automatic Rate Detection
• -Surface Mount, 48-Pin, 7-mm × 7-mm HTQFP Package
• -Thermal and Short-Circuit Protection
• -Support for AD or BD Mode

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. iPod is a trademark of Apple Inc.

• Television
• iPod™ Dock
• Sound Bar

TA = 25°, PVCC_x = 18V, DVDD = AVDD = 3.3V, RL= 8 Ω , BTL AD Mode, FS = 48KHz (unless otherwise noted)

over operating free-air temperature range (unless otherwise noted) (1)