| Allicdata Part #: | 296-32732-ND |
| Manufacturer Part#: |
TAS5711PHP |
| Price: | $ 1.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Texas Instruments |
| Short Description: | IC AMP AUD DGTL 20W 2CH 48HTQFPAmplifier IC 2-Chan... |
| More Detail: | N/A |
| DataSheet: | TAS5711PHP Datasheet/PDF |
| Quantity: | 12569 |
| Lead Free Status / RoHS Status: | |
| Moisture Sensitivity Level (MSL): |
| 1 +: | $ 1.00000 |
| 10 +: | $ 0.97000 |
| 100 +: | $ 0.95000 |
| 1000 +: | $ 0.93000 |
| 10000 +: | $ 0.90000 |
| Series: | -- |
| Packaging: | Tray |
| Lead Free Status / RoHS Status: | -- |
| Part Status: | Active |
| Moisture Sensitivity Level (MSL): | -- |
| Type: | Class D |
| Output Type: | 2-Channel (Stereo, 2.1) or 4-Channel (Quad) |
| Max Output Power x Channels @ Load: | 21W x 2 @ 8 Ohm |
| Voltage - Supply: | 8 V ~ 26 V |
| Features: | Depop, Digital Inputs, I²C, I²S, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control |
| Mounting Type: | Surface Mount |
| Operating Temperature: | 0°C ~ 85°C (TA) |
| Supplier Device Package: | 48-HTQFP (7x7) |
| Package / Case: | 48-TQFP Exposed Pad |
| Base Part Number: | TAS5711 |
DESCRIPTION
The TAS5711PHP is a 20-W, efficient, digital audio power amplifier for driving stereo bridge-tied speakers. One serial data input allows processing of up to two discrete audio channels and seamless integration to most digital audio processors and MPEG decoders.
The device accepts a wide range of input data and data rates. A fully programmable data path routes these channels to the internal speaker drivers.
The TAS5711PHP is an I2S slave-only device receiving all clocks from external sources. The TAS5711PHP operates with a PWM carrier between 384-kHz switching rate and 352-KHz switching rate depending on the input sample rate. Oversampling combined with a fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20 kHz.

FEATURES
1. Audio Input/Output
– 20-W Into an 8-Ω Load From an 18-V Supply
– Wide PVDD Range, From 8 V to 26 V
– 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
– I2C Address Selection Pin (Chip Select)
– Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I2S)
2. 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
– DC Blocking Filters
– Support for 3D Effects
3. 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
4. Benefits
– Up to 90% Efficient
– AD and BD Filter Mode Support
– 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
5. Requires Only 3.3 V and PVDD
APPLICATIONS
1. Television
2. iPod™ Dock
3. Sound Bar
Power supply description
To facilitate system design, the TAS5711PHP needs only a 3.3-V supply in addition to the (typical) 18-V power-stage supply. An internal voltage regulator provides suitable voltage levels for the gate drive circuitry. Additionally, all circuitry requiring a floating voltage supply, e.g., the high-side gate drive, is accommodated by built-in bootstrap circuitry requiring only a few external capacitors.
In order to provide good electrical and acoustical characteristics, the PWM signal path for the output stage is designed as identical, independent half-bridges. For this reason, each half-bridge has separate bootstrap pins
(BST_x), and power-stage supply pins (PVDD_x). The gate drive voltages (GVDD_AB and GVDD_CD) are derived from the PVDD voltage. Special attention should be paid to placing all decoupling capacitors as close to
their associated pins as possible. In general, inductance between the power-supply pins and decoupling capacitors must be avoided.
For a properly functioning bootstrap circuit, a small ceramic capacitor must be connected from each bootstrap pin (BST_x) to the power-stage output pin (OUT_x). When the power-stage output is low, the bootstrap capacitor is charged through an internal diode connected between the gate-drive regulator output pin (GVDD_x) and the bootstrap pin. When the power-stage output is high, the bootstrap capacitor potential is shifted above the output potential and thus provides a suitable voltage supply for the high-side gate driver. In an application with PWM switching frequencies in the range from 352 kHz to 384 kHz, it is recommended to use 33-nF 50-V X7R
capacitors, size 0603 or 0805, for the bootstrap supply. These 33-nF capacitors ensure sufficient energy storage, even during minimal PWM duty cycles, to keep the high-side power stage FET (LDMOS) fully turned on during
the remaining part of the PWM cycle.
Special attention should be paid to the power-stage power supply; this includes component selection, PCB placement, and routing. As indicated, each half-bridge has independent power-stage supply pins (PVDD_x). For optimal electrical performance, EMC compliance, and system reliability, it is important that each PVDD_x pin is decoupled with a 100-nF ceramic capacitor placed as close as possible to each supply pin.
The TAS5711 is fully protected against erroneous power-stage turnon due to parasitic gate charging.

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TAS5711PHP Datasheet/PDF