The TAS5707PHPR is a high-performance digital amplifier IC from Texas Instruments (TI), primarily used in audio amplification systems. It integrates a variety of features aimed at efficient audio amplification, and the associated package for this IC is typically a HTSSOP-28 or similar variant depending on the specific part number.
TAS5707PHPR Package Overview:
Package Type: HTSSOP-28 (Heat Sink Thin Shrink Small Outline Package) Number of Pins: 28 pins Package Size: Typically 6mm x 8mm Pin Pitch: 0.65mmDetailed Pin Function Specification (for TAS5707PHPR in HTSSOP-28 package):
Here is the detailed list of all 28 pins in the HTSSOP-28 package:
Pin # Pin Name Pin Function Description 1 VDDH Power supply pin (typically 10V to 18V) for the high-side circuitry. 2 VSS Ground pin for the device’s internal circuits. 3 INP Positive input for the audio signal. 4 INN Negative input for the audio signal. 5 PGND Power ground for the internal power stage. 6 SD Shutdown pin for the device, used to disable the amplifier. 7 OVP Overvoltage protection pin, used to monitor the power supply voltage. 8 DRVLO Low-side driver for controlling the external MOSFETs . 9 DRVHI High-side driver for controlling the external MOSFETs. 10 VDD Supply voltage pin for logic circuits (typically 3.3V or 5V). 11 AGND Analog ground pin for the signal processing circuits. 12 N/C No connection (may be unused or internally connected). 13 SPK+ Positive speaker output. 14 SPK- Negative speaker output. 15 FB2 Feedback pin for second-stage feedback control. 16 FB1 Feedback pin for first-stage feedback control. 17 MUTE Mute control pin to silence the output. 18 TSENSE Temperature sensing pin for thermal protection and management. 19 PWMD Pulse-width modulation input, used for controlling the output power. 20 CLIP Clip detection output, indicates signal clipping. 21 SLOPE External feedback network for controlling the signal slope. 22 IREF Reference current input for the amplifier's internal circuits. 23 SDIN Serial data input, used for programming the amplifier via a serial interface . 24 SCLK Serial clock input, used with SDIN for data transfer. 25 SCS Chip select for serial interface, used to select device communication. 26 DNC Do not connect (internally unused). 27 VSS Ground pin for power circuits. 28 VDDH High-side supply voltage for the power stage.Pin Function FAQ (Frequently Asked Questions)
Q: What is the function of the SD pin? A: The SD pin is the shutdown pin, which is used to disable the amplifier. When pulled low, the device enters shutdown mode to save power.
Q: What is the voltage range for the VDDH pin? A: The VDDH pin is the high-side power supply pin and typically operates in the range of 10V to 18V.
Q: How do I use the TSENSE pin? A: The TSENSE pin is used for thermal sensing. It monitors the temperature of the IC, and if the temperature exceeds a certain threshold, the device will enter thermal shutdown to prevent damage.
Q: What is the purpose of the INP and INN pins? A: The INP and INN pins are the positive and negative inputs for the audio signal. The signal is fed into these pins for amplification.
Q: Can I leave the N/C pin unconnected? A: Yes, the N/C pin (No Connection) can be left unconnected as it is not used in the circuit.
Q: How do I mute the output of the amplifier? A: To mute the output, pull the MUTE pin low to disable the output signal.
Q: What does the DRVHI and DRVLO pins control? A: The DRVHI and DRVLO pins control the external MOSFETs in the power stage of the amplifier. DRVHI is for the high-side driver, and DRVLO is for the low-side driver.
Q: What does the PWMD pin do? A: The PWMD pin is the pulse-width modulation input used to control the power output of the amplifier. It modulates the signal to adjust the power sent to the speakers.
Q: What is the role of the CLIP pin? A: The CLIP pin outputs a signal indicating when the audio signal is clipping, helping to protect the speaker and amplifier from damage.
Q: How can I control the feedback of the amplifier? A: The feedback of the amplifier is controlled through the FB1 and FB2 pins. These pins are used for feedback in both first and second stages.
Q: Can I use an external clock with this device? A: Yes, the TAS5707PHPR supports external clock input through the SCLK pin for synchronizing data transfer.
Q: How do I connect the speaker? A: The speaker should be connected to the SPK+ (positive) and SPK- (negative) pins for proper output.
Q: Is there a way to protect the device from overvoltage? A: Yes, the OVP pin is used to monitor the supply voltage, and it can trigger overvoltage protection if the voltage exceeds a predefined limit.
Q: What is the function of the IREF pin? A: The IREF pin provides a reference current input for the internal circuits of the amplifier, ensuring stable operation.
Q: Can the SDIN and SCLK pins be used for programming the device? A: Yes, the SDIN and SCLK pins are used for serial programming and configuration of the amplifier settings.
Q: What is the power supply voltage for the VDD pin? A: The VDD pin supplies power to the logic circuits of the device and typically operates at 3.3V or 5V.
Q: How do I manage the power stage of the device? A: The power stage is controlled via the DRVHI and DRVLO pins, which drive external MOSFETs in the amplifier's power stage.
Q: Can I use the TAS5707PHPR in a multi-channel setup? A: Yes, the TAS5707PHPR can be used in multi-channel audio systems, though each channel would require its own instance of the device.
Q: How does the device handle thermal protection? A: The TAS5707PHPR features built-in thermal protection via the TSENSE pin, which ensures the device does not overheat during operation.
Q: What do the DNC pins do? A: The DNC pins are "Do Not Connect" pins, meaning they are unused and should not be connected to anything.
This should give you a comprehensive understanding of the TAS5707PHPR's pin functionality, package, and common usage scenarios.
