Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Conversion | 24-bit delta-sigma stereo ADC |
| Sampling | 8 kHz to 96 kHz |
| Input | Single-ended analog, 3 Vp-p |
| SNR / Dynamic Range | 99 dB typical / 99 dB typical |
| THD+N | −93 dB typical |
| Digital Audio | 24-bit I²S or left-justified; master/slave modes |
| Filtering | 64× oversampling decimation, integrated HPF and analog antialias LPF |
| Exact Package / Packing | TSSOP (PW), 14 pins; 2000-piece large tape and reel |
Product Overview
PCM1808PWR is a straightforward stereo line-level audio ADC for digitizing two single-ended analog channels up to 96 kHz sample rate. It integrates the delta-sigma modulators, antialias front end, digital decimation and DC-removing high-pass filtering needed for a compact audio capture path.
Its 99 dB typical SNR and −93 dB typical THD+N suit general consumer, musical-instrument and AV acquisition rather than ultra-high-dynamic-range studio conversion. The serial interface supports I²S and left-justified formats and can operate as clock master or slave.
Power-down is controlled by halting the system clock rather than a rich register interface, making the part relatively simple but placing more responsibility on clock sequencing and analog front-end level scaling.
For related devices, see HKEQGOO’s ADCs/DACs – Special Purpose category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | PCM1808PWR |
| Conversion | 24-bit delta-sigma stereo ADC |
| Sampling | 8 kHz to 96 kHz |
| Input | Single-ended analog, 3 Vp-p |
| SNR / Dynamic Range | 99 dB typical / 99 dB typical |
| THD+N | −93 dB typical |
| Digital Audio | 24-bit I²S or left-justified; master/slave modes |
| Filtering | 64× oversampling decimation, integrated HPF and analog antialias LPF |
| Exact Package / Packing | TSSOP (PW), 14 pins; 2000-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | PCM1808 |
Functional Highlights
Single-ended 3 Vp-p input simplifies line-level sources
The source still needs appropriate AC coupling/bias and source impedance so the ADC input remains within the specified common-mode and full-scale range.
99 dB SNR is a system target only if the analog supply/layout is equally quiet
Ground partitioning, clock return current and source noise can consume the converter’s available dynamic range before the digital interface becomes relevant.
Design Considerations
- Scale the analog source so peaks remain inside the 3 Vp-p input range with margin for source tolerance.
- Keep analog input/ground routing away from BCK/LRCK/SCKI edges and use local supply decoupling.
- Confirm master/slave clock ratios and startup sequencing before relying on clock-stop power-down.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists PCM1808PWR as Active / Production; TSSOP (PW), 14 pins; 2000-piece large tape and reel; Level-1-260C-UNLIM; −40°C to +85°C; marking PCM1808.
Related Engineering Resources
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Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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