Texas Instruments TPA2028D1 Class-D Audio Amplifier Circuit Analysis of the Analog Functional Blocks 1891 Robertson Road, Suite 500, Ottawa, ON K2H 5B7 Canada Tel: 613.829.0414 Fax: 613.829.0515 www.chipworks.com
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Overview Introduction Brief Design Overview Component Descriptions Device Summary Figures To view, please click on the appropriate bookmark in the panel on the left. 0.1.1 Package Photograph with Pinout 0.1.2 Package X-Ray 0.1.3 Die Markings 0.2.1 Die Photograph 0.2.2 Die Photograph Metal 1 0.2.3 Annotated X-Ray and Die Photographs 0.2.4 Die Architecture Schematics 1.0.0 Top Level Diagram 2.0.0 Input Filter and PGA 2.1.0 Fully Differential OTA 2.1.1 Reference Voltage Generator 2.1.2 Binary Decoder 2.1.3 Current Mirror 2.2.0 Resistor Divider 2.3.0 Gain Decoder 2.4.0 Dual Output Voltage Buffer 3.0.0 Integrator 3.1.0 Transconductance Amplifier with Dead Zone 3.2.0 Reference Voltages 3.3.0 OTA 4.0.0 Comparator 4.1.0 Current Mirror 4.2.0 Current Mirror 5.0.0 PWM Logic
6.0.0 Output Driver 6.1.0 Buffer 6.2.0 PMOS Switch 7.0.0 Output Level Detector 8.0.0 Short Circuit Detector 9.0.0 Half VDD Source 10.0.0 R-2R Resistor DAC 10.1.0 Reference Switch 10.2.0 Switched Resistor 11.0.0 AGC Front End 11.1.0 Switched Capacitor Summer 11.2.0 Summing OTA 11.3.0 Clock Generation 11.3.1 3-Bit Binary Counter with Asynchronous Reset 11.3.2 Clock Phase Generator 11.3.3 Delay Chain 11.4.0 Comparator 12.0.0 Digital Control I/O 12.1.0 Input Buffer 12.1.1 ESD Clamp 12.2.0 Output Buffer 12.3.0 Input Buffer 12.4.0 Overvoltage Detector 12.5.0 Thermal Detector 13.0.0 Bias and Oscillator 13.1.0 Current Mirror 13.2.0 Current Mirror 13.3.0 Oscillator 13.3.1 OTA 13.3.2 Reference Voltage Source 13.3.3 Comparator Pair 13.3.4 Half VDD Source
13.3.5 Programmable Resistor 13.4.0 Clock Delay 13.5.0 Bandgap Reference 13.5.1 Buffer Amplifier 13.5.2 Bandgap Level Detector 13.5.3 Current Mirror 14.0.0 EEPROM 14.1.0 EEPROM Voltage Generator 15.0.0 Analog Test Switches 15.1.0 Analog Switch 16.0.0 ESD Protection Cell Library 17.0.0 Power Clamp About Chipworks
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