STA333BW STMicroelectronics, STA333BW Datasheet - Page 35

• Manufacturer Part Number: STA333BW
• Manufacturer: STMicroelectronics

Specifications of STA333BW

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono/2-Channel Stereo
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.2@8Ohm@1W%
• Single Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (typ): 3.3/5/9/12/15/18V
• Power Supply Requirement: Quad
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 80dB
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): 2.7/4.5V
• Dual Supply Voltage (max): 3.6/21.5V
• Operating Temp Range: -20C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 36
• Package Type: PowerSSO EP
• Lead Free Status / Rohs Status: Compliant

STA333BW
Figure 13. OCFG = 11
The STA333BW can be configured to support different output configurations. For each PWM
output channel a PWM slot is defined. A PWM slot is always 1 / (8 * fs) seconds length. The
PWM slot define the maximum extension for PWM rise and fall edge, that is, rising edge as
far as the falling edge cannot range outside PWM slot boundaries.
Figure 14. Output mapping scheme
For each configuration the PWM signals from the digital driver are mapped in different ways
to the power stage:
modulator
modulator
modulator
modulator
modulator
modulator
FFX ™
FFX ™
FFX ™
FFX ™
FFX ™
FFX ™
Doc ID 13773 Rev 3
FFX3 A
FFX3 A
FFX3 A
FFX3 A
FFX3 A
FFX3 A
FFX3B
FFX3B
FFX3B
FFX3B
FFX3B
FFX3B
FFX4 A
FFX4 A
FFX4 A
FFX4 A
FFX4 A
FFX4 A
FFX 4B
FFX 4B
FFX 4B
FFX 4B
FFX 4B
FFX1A
FFX1A
FFX1A
FFX1A
FFX1A
FFX1A
FFX2 A
FFX2 A
FFX2 A
FFX2 A
FFX2 A
FFX2 A
FFX1 B
FFX1 B
FFX1 B
FFX1 B
FFX1 B
FFX1 B
FFX 2B
FFX 2B
FFX 2B
FFX 2B
FFX 2B
FFX 2B
Bridge
Bridge
Bridge
Bridge
Bridge
Bridge
Bridge
Bridge
Half
Half
Half
Half
Half
Half
Half
Half
REMAP
REMAP
REMAP
REMAP
REMAP
REMAP
OUT4B
OUT4B
OUT3A
OUT3A
OUT3B
OUT3B
OUT4A
OUT4A
OUT1A
OUT1A
OUT2B
OUT2B
OUT1B
OUT1B
OUT2A
OUT2A
Channel 1
Channel 1
Channel 2
Channel 2
OUT1A
OUT1A
OUT1A
OUT1A
OUT1A
OUT1A
OUT1B
OUT1B
OUT1B
OUT1B
OUT1B
OUT1B
OUT2A
OUT2A
OUT2A
OUT2A
OUT2A
OUT2A
OUT2B
OUT2B
OUT2B
OUT2B
OUT2B
OUT2B
OUT3A
OUT3A
OUT3A
OUT3A
OUT3A
OUT3B
OUT3B
OUT3B
OUT3B
OUT3B
OUT4A
OUT4A
OUT4A
OUT4A
OUT4A
OUT4B
OUT4B
OUT4B
OUT4B
OUT4B
Channel 3
Channel 3
Bridge
Bridge
Bridge
Bridge
Bridge
Bridge
Power
Power
Power
Power
Power
Power
Register description
OUT1A
OUT1A
OUT1A
OUT1A
OUT1A
OUT1A
OUT2A
OUT2A
OUT2A
OUT2A
OUT2A
OUT2A
OUT1B
OUT1B
OUT1B
OUT1B
OUT1B
OUT1B
OUT2B
OUT2B
OUT2B
OUT2B
OUT2B
OUT2B
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