Features: ` Wide supply voltage range (10-36V)
` 3 Power Output Configurations
2x40W + 1x80W
2x80W
1x160W
` Power SO-36 Package
` 2.1 Channels of 24-Bit DDX®
` 100dB SNR and Dynamic Range
` 32kHz to 192kHz Input Sample Rates
` Digital Gain/Attenuation +48dB to -80dB in 0.5dB steps
` 428-bit User Programmable Biquads (EQ) per Channel
` I2C Control
` 2-Channel I2S Input Data Interface
` Individual Channel and Master Gain/Attenuation
` Individual Channel and Master Soft and Hard Mute
` Individual Channel Volume and EQ Bypass
` Bass/Treble Tone Control
` Dual Independent Programmable Limiters/ Compressors
` Automodes™
32 Preset EQ Curves
15 Preset Crossover Settings
Auto Volume Controlled Loudness
3 Preset Volume Curves
2 Preset Anti-Clipping Modes
Preset Nighttime Listening Mode
Preset TV AGC
` Input and Output Channel Mapping
` AM Noise Reduction and PWM Frequency Shifting Modes
` Soft Volume Update and Muting
` Auto Zero Detect and Invalid Input Detect
Muting Selectable DDX® Ternary or Binary
PWM output + Variable PWM Speeds
` Selectable De-emphasis
` Post-EQ User Programmable Mix with default 2.1 Bass Management settings
` Variable Max Power Correction for lower fullpower THD
` 4 Output Routing Configurations
` Selectable Clock Input Ratio
` 96kHz Internal Processing Sample Rate, 24 to 28-bit precision
` QXpander
` Video Application: 576 fs input mode suportingPinout
Specifications
| Symbol |
Parameter |
Value |
Unit |
| VDD_3.3 |
3.3V I/O Power Supply |
-0.5 to 4 |
V |
| Vi |
Voltage on input pins |
-0.5 to (VDD+0.5) |
V |
| Vo |
Voltage on output pins |
-0.5 to (VDD+0.5) |
V |
| Tstg |
Storage Temperature |
-40 to +150 |
°C |
| Tamb |
Ambient Operating Temperature |
-20 to +85 |
°C |
| VCC |
DC Supply Voltag |
40 |
V |
| VMAX |
Maximum voltage on pins 20 |
5.5 |
V |
DescriptionThe STA328 is an integrated solution of digital audio processing, digital amplifier control, and DDXPower Output Stage, thereby creating a high-power single-chip DDX® solution comprising of highquality, high-efficiency, all digital amplification.
The STA328 power section consists of four independent half-bridges. These can be configured via digital control to operate in different modes. 2.1 channels can be provided by two half-bridges and a single full-bridge, providing up to 2x40W + 1x80W of power output. 2 Channels can be provided by two full-bridges, providing up to 2x80W of power. The IC can also be configured as a single paralelled full-bridge capable of high-current operation and 1x160W output.
Also provided in the STA328 are a full assortment of digital processing features. This includes up to 4 programmable 28-bit biquads (EQ) per channel,and bass/treble tone control. Automodes™ enable a time-to-market advantage by substantially reducing the amount of software development needed for certain functions. This includes Auto Volume loudness, preset volume curves, preset EQ settings, etc. New advanced AM radio inerference reduction modes.
The serial audio data input interface accepts all possible formats, including the popular I2S format.
Three channels of DDX® processing of the STA328 are provided. This high quality conversion from PCM audio to DDX's patented tri-state PWM switching waveform provides over 100dB SNR and dynamic range.
STA328 Data Sheet
