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PCM1801U

Name: PCM1801U
Rating: 4.7 (12 reviews)

IC ADC/AUDIO 16BIT 48K 14SOIC

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製造商。部分 #PCM1801U
包 14-SOIC (0.154, 3.90mm Width)
資料表 PCM1801U DataSheet
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規格

Supplier	Texas Instruments
Package	Tube
ProductStatus	Not For New Designs
Type	ADC, Audio
NumberofChannels	2
Resolution(Bits)	16 b
SamplingRate(PerSecond)	48k
DataInterface	Serial
VoltageSupplySource	Analog and Digital
Voltage-Supply	4.5V ~ 5.5V
OperatingTemperature	-25°C ~ 85°C
MountingType	Surface Mount
Package/Case	14-SOIC (0.154, 3.90mm Width)

概述

Description

PCM1801U is TI’s two‑channel, 24‑bit stereo analog‑to‑digital converter (ADC). It converts differential analog audio inputs into a digital, I2S‑compatible serial stream (and often supports other formats such as left‑justified or PCM). The device requires an external master clock and sampling rate configuration, making it suitable for high‑quality audio front‑ends. Its strengths typically include low noise, wide dynamic range, and a compact package for consumer and professional audio applications. In short, it’s a drop‑in ADC for converting stereo analog audio to high‑resolution digital data with flexible digital interfaces. For exact specs (SNR, THD, input ranges, clock requirements), consult the PCM1801U datasheet.

Features

Concise features of PCM1801U:
- 24-bit stereo ADC (two differential inputs per channel)
- Delta-sigma analog-to-digital converter
- Up to 96 kHz sampling rate
- Differential analog input structure for improved noise rejection
- Digital audio interface: I2S and left-justified formats; MSB-aligned data (supports 16/20/24-bit word lengths)
- Flexible clocking: master or slave operation; accepts standard audio clocks (BCLK/LRCLK) with optional MCLK
- Separate analog and digital power supplies for reduced digital noise coupling
- Low-noise, wide dynamic range suitable for consumer/PRO audio
- Small, cost-efficient package suitable for integration
Note: Specific electrical pins, voltage levels, and exact packaging vary by variant; consult the datasheet for exact pinout and operating conditions.

Package

PCM1801U uses an 8-pin small-outline package (SOIC-8). Check the TI datasheet for the exact variant and land pattern.

Pinout

- Pin count: 28 pins (in the PCM1801U package, e.g., SSOP/TSSOP/QFN variants).
- Function: Two-channel, 24-bit stereo ADC (sigma‑delta). It accepts differential analog inputs (AINL+/AINL− for left, AINR+/AINR− for right), and provides a serial digital output (DOUT) with I2S/Left-Justified interface. Clock inputs include BCLK (bit clock), LRCLK/WS (word select), and MCLK. Also includes power pins (DVDD, AVDD), grounds (DGND, AGND), reference, reset, and power-down control.

Manufacturer

Manufacturer: Texas Instruments (TI).
TI is an American multinational technology company that designs and manufactures semiconductors and integrated circuits, including analog and mixed-signal, digital signal processing, and other semiconductor products. Headquarters: Dallas, Texas.

Application

PCM1801U is a stereo, high-performance ADC for audio digitization. Typical applications:
- Consumer and professional audio interfaces and sound cards
- Digital mixers, preamps, and recording equipment
- AV receivers, Blu-ray/Set‑top boxes for digital audio input
- Portable recorders and musical instrument processors
- Industrial or biomedical data-acquisition systems needing reliable stereo A/D with I2S/serial output

Equivalent

PCM1801U is a TI stereo 24-bit ΔΣ ADC. Direct pin-for-pin equivalents are scarce. Closest cross-refs:
- TI: PCM1800/1802/1804 family
- Cirrus Logic: CS5340, CS5344
- Analog Devices: AD1871, AD1875
Note: verify I/O interfaces (I2S/Left-justified), supply voltages, and pinouts in datasheets for compatibility.