PCM1808PWG4

ADCs/DACs - Special Purpose Overview

The PCM1808PWG4 is a stereo audio analog-to-digital converter manufactured by Texas Instruments. It features a 24-bit resolution and supports sampling rates up to 96 kHz. The device utilizes a delta-sigma modulation architecture with a 64x oversampling decimation filter. It accepts single-ended analog voltage inputs with a maximum peak-to-peak amplitude of 3 V. Key performance metrics include a typical signal-to-noise ratio (SNR) of 99 dB, total harmonic distortion plus noise (THD+N) of -93 dB, and a dynamic range of 99 dB. The component operates within a supply voltage range of 4.5 V to 5.5 V for the analog section and includes an on-chip high-pass filter with a cutoff frequency of 0.91 Hz at 48 kHz sampling rate.

ADCs/DACs - Special Purpose Feature Summary

• 24-bit stereo delta-sigma ADC with 96 kHz maximum sampling rate
• High-performance audio specifications: 99 dB SNR and -93 dB THD+N
• Single-ended analog input capability with 3 Vp-p maximum input level
• Integrated digital decimation filter with ±0.05 dB pass-band ripple

ADCs/DACs - Special Purpose Applications

• Cost-sensitive consumer audio equipment requiring stereo digitization
• Digital audio systems utilizing serial PCM/I2S interfaces
• Applications requiring separate 5-V analog and 3.3-V digital power domains

ADCs/DACs - Special Purpose Procurement Notes

Verify the 'G4' suffix indicates lead-free and RoHS-compliant construction as per manufacturer standards. Confirm the package type is TSSOP-14 with a 0.65 mm pitch. Ensure the operating temperature range meets requirements of -40°C to +85°C. Cross-reference the specific revision status in the official datasheet SLES177A to confirm active production status.

ADCs/DACs - Special Purpose Selection Notes

Select this component when single-ended inputs are required instead of differential configurations found in other PCM18xx series variants. Ensure the system design accommodates the 5-V analog supply requirement, distinguishing it from lower-voltage alternatives. Verify that the serial interface timing aligns with the host processor's master or slave mode capabilities.

ADCs/DACs - Special Purpose Part Context

The PCM1808PWG4 belongs to the PCM1808 family of audio ADCs produced by Burr-Brown, now part of Texas Instruments. The 'PW' designation identifies the plastic small-outline thin-profile shrink pitch (TSSOP) package with 14 pins. The 'G4' suffix typically denotes environmental compliance, specifically lead-free and RoHS adherence, without altering the electrical functionality compared to the standard PCM1808PW.

ADCs/DACs - Special Purpose Replacement Considerations

The PCM1808PWR serves as the reel-pack equivalent of the cut-tape PW variant. For automotive applications, the PCM1808QPWRQ1 offers AEC-Q100 qualification and extended temperature ranges. Differential input versions such as the PCM1804 may be considered if board layout allows for balanced signaling.