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Texas Instruments PCM1861DBTR — Discrete Semiconductors

TI PCM1861DBTR Audio ADC, 24-bit 192k, 30-TSSOP

MPNPCM1861DBTR
End of Life

Texas Instruments PCM1861DBTR audio ADC, 24-bit resolution, 192k sampling rate, 2-channel, I²C/SPI interface, 30-TFSOP package, surface mount, -40°C to 125°C.

$5.23Ref. price · indicative, final on quote
Packaging30-TFSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

PCM1861DBTR specifications
ParameterValue
TypeADC, Audio
MountingSurface Mount
Voltage1.8V ~ 3.3V
Voltage supply sourceAnalog and Digital
InterfaceI²C, SPI
Operating temperature-40°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Case30-TFSOP (0.173\", 4.40mm Width)
Resolution24 b
Channels2
Sampling rate (Per second)192k

Product details

24-bit audio ADC with 192k sampling

The PCM1861DBTR: That 24-bit resolution gives you a theoretical dynamic range of about 144 dB — enough headroom to capture quiet passages without noise floor issues, even in a live recording or industrial audio monitoring chain. It has 2 channels, so it handles stereo line-level inputs directly. The data interface is I²C or SPI, which means you can talk to it from most microcontrollers without needing a dedicated audio codec bus — useful for embedded systems where the MCU already has those peripherals.

Supply and temperature range

The supply source is both analog and digital, so you need separate clean rails for the analog front-end and the digital core — typical for audio ADCs to keep switching noise out of the signal path.

It comes in a 30-TFSOP package (0.173" wide, 4.40 mm width), also referred to as 30-TSSOP. Surface-mount, so it sits flat on the board — the 0.65 mm pitch is fine for hand-assembly with a decent iron and flux, but reflow is cleaner for production. Available in Tape & Reel (TR) or Cut Tape (CT) — the reel option is for pick-and-place; cut tape works for prototypes or small runs.