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PCM1808

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TI stereo audio ADC, TSSOP-14. 24-bit, 96 kHz, single-ended input, I2S output. Datasheet-verified.

componentdata-converteradcaudioi2stssop-14texas-instruments
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Contents

README

markdown

PCM1808

Texas Instruments · Stereo audio ADC (I2S) · TSSOP-14

A stereo audio analog-to-digital converter in TSSOP-14, the input-side counterpart of the PCM5102A DAC. It digitizes a left/right line-level analog signal (VINL, VINR) to 24-bit samples at up to 96 kHz using a delta-sigma modulator with 64x oversampling, and streams the result out as I2S (BCK, LRCK, DOUT). A single-ended input stage keeps the external circuit simple, format and mode pins configure the I2S variant and sampling, and it needs only a system clock (SCKI) plus decoupling. It is a common front end for USB audio interfaces, mixers, and recording gear. Runs 5 V analog / 3.3 V digital.

Pinout

Pin Name Type Function
1 VREF passive Reference-voltage decoupling pin at 0.5 x VCC (~2.5 V nominal with VCC = 5 V). Bypass to AGND with a decoupling capacitor; do not drive externally.
2 AGND power_in Analog ground return for the 5-V analog supply (VCC) and analog input circuitry.
3 VCC power_in Analog power supply, 5 V nominal (4.5 - 5.5 V recommended, 6.5 V absolute max). Typical ICC = 8.6 mA at fs = 48/96 kHz.
4 VDD power_in Digital power supply, 3.3 V nominal (2.7 - 3.6 V recommended, 4 V absolute max). Typical IDD = 5.9 mA at fs = 48 kHz, 10.2 mA at 96 kHz.
5 DGND power_in Digital ground return for the 3.3-V digital supply (VDD) and digital I/O.
6 SCKI input System clock input; 256 fs, 384 fs, or 512 fs (2.048 - 49.152 MHz). Schmitt-trigger, 5-V tolerant. Halting SCKI (along with BCK/LRCK) invokes power-down and internal reset.
7 LRCK bidirectional Audio-data left/right latch-enable (word-select / LRCLK). Input in slave mode, output in master mode. Schmitt-trigger input with 50-kohm typical internal pulldown (slave mode).
8 BCK bidirectional Audio-data serial bit clock (BCLK). Input in slave mode, output in master mode. Schmitt-trigger input with 50-kohm typical internal pulldown (slave mode).
9 DOUT output Audio-data serial digital output (SDATA), 24-bit MSB-first two's complement. Driven per FMT selection (I2S or left-justified).
10 MD0 input Audio-interface mode select 0. Together with MD1 selects master/slave mode and BCK/LRCK ratios. Schmitt-trigger input with 50-kohm typical internal pulldown, 5-V tolerant.
11 MD1 input Audio-interface mode select 1. Together with MD0 selects master/slave mode and BCK/LRCK ratios. Schmitt-trigger input with 50-kohm typical internal pulldown, 5-V tolerant.
12 FMT input Audio-interface data-format select: I2S vs 24-bit left-justified on DOUT. Schmitt-trigger input with 50-kohm typical internal pulldown, 5-V tolerant.
13 VINL input Single-ended analog input, left channel. Full-scale input 3 Vp-p (0.6 x VCC) centered at VREF (0.5 x VCC ~ 2.5 V). Input impedance 60 kohm typical.
14 VINR input Single-ended analog input, right channel. Full-scale input 3 Vp-p (0.6 x VCC) centered at VREF (0.5 x VCC ~ 2.5 V). Input impedance 60 kohm typical.

Key specifications

Parameter Value
Type Stereo audio ADC (I2S)
Resolution 24-bit
Sample rate up to 96 kHz
Input single-ended line-level (L/R)
Architecture delta-sigma, 64x oversampling
Output I2S (BCK/LRCK/DOUT)
SNR 99 dB
Package TSSOP-14

Ordering variants

Same part, different packaging or reel option.

  • PCM1808PWR (TSSOP-14)
  • PCM1808PW (TSSOP-14, tube)

CAD (KiCad official)

  • Symbol: PCM1808 (generated from datasheet; KiCad has no symbol)
  • Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
  • 3D model: TSSOP-14 (KiCad packages3D)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (32 pp, sha256 4ac1a7ec0c05ee97, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF