PCM3001E - 18-Bit Stereo Audio Codec | Texas Instruments
MPN： PCM3001E ✓ 啟用中PCM3001E 概覽
An audio codec is an interface IC that converts analog audio signals into digital data and converts digital audio data back into analog signals. In the broader hierarchy, a codec belongs to an audio interface IC, which is part of the interface IC and semiconductor categories. The PCM3001E integrates these conversion functions into one device, reducing the number of external converters required in consumer audio systems.
The PCM3001E provides 18-bit stereo conversion, a serial interface, single-ended analog input and output capability, and hardware control for the line-output section. According to the manufacturer product page, its data format can be pin-programmed, allowing the same hardware design to support multiple serial-interface configurations. These features help simplify board design where source selection, volume control, or codec mode selection must be handled through hardware signals.
Texas Instruments fabricates the PCM3000 and PCM3001 codec families using an advanced CMOS process and packages them in a compact 28-pin SSOP. The integrated conversion and output-control functions can shorten analog routing and reduce external component count, but the serial interface, clocking, grounding, and power-supply layout remain central to achieving clean audio performance. Designers should treat the analog and digital return paths as separate until they meet at the codec ground reference.
Typical uses include stereo USB audio accessories, portable consumer audio products, digital audio adapters, multimedia equipment, and compact sound-card designs. A suitable external clock and properly terminated serial data path are required when the codec operates as an audio interface slave or master. The hardware-programmable interface also supports shared-bus designs in which several audio functions must share limited connector or controller pins.
The primary design tradeoff is integration versus flexibility. A 28-pin SSOP reduces external converter circuitry, but the relatively fine lead pitch requires careful soldering and component placement. Place input and output decoupling close to their associated pins, maintain short analog traces, and use an uninterrupted ground plane beneath the codec. Follow the manufacturer datasheet pin-description table and application circuit when assigning every control and supply connection.
This page combines the official device information, package identification, a verified direct-replacement candidate, and practical interface-selection guidance. It also distinguishes confirmed electrical facts from parameters that require design confirmation, helping engineers move from part selection to a defensible PCB implementation.
直接替換替代品，適用於 PCM3001E — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
PCM1746E
✅ 直接替換📋 參考替代品（不在目錄中）
PCM3001E 規格
| Product Type | Stereo audio codec |
| Converter Resolution | 18 bit |
| Audio Channel Count | 2 channel stereo |
| Analog Input Architecture | Single-ended |
| Analog Output Architecture | Single-ended |
| Integrated ADC Count | 2 ADC |
| Integrated DAC Count | 2 DAC |
| Digital Audio Interface | Serial |
| Interface Format Programming | Pin-programmable |
| Line Output Control | Hardware control |
| Process Technology | CMOS |
| Package Type | 28-pin SSOP |
| 安裝類型 | Surface mount |
PCM3001E 28-pin ssop 腳位配置指南
PCM3001E（28-pin ssop 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： PCM3001E.
請參閱 資料表 以查看完整腳位配置。
典型應用
PCM3001E 適用於 6 應用s: Compact USB Audio Adapter, Stereo Digital Sound Card, Portable Consumer Audio Product, Multimedia Speaker Interface, Digital Audio Recording Module, Shared-Serial-Interface Audio Product.
Compact USB Audio Adapter
PCM3001E fits a compact USB audio adapter because it integrates two 18-bit ADCs, two 18-bit DACs, and a serial interface in one 28-pin SSOP package. The converter can sit close to the analog input and output connectors, while the host controller handles the USB-to-serial conversion. Hardware-programmable data formats provide flexibility during interface configuration. The principal design constraint is clock quality: use a low-jitter source and keep clock and data routing away from the analog input path. Confirm supply values and permitted sampling rates in the manufacturer datasheet before finalizing the interface.
推薦
Stereo Digital Sound Card
PCM3001E is suitable for a stereo digital sound card requiring simultaneous analog capture and playback in one integrated component. Its two ADC channels and two DAC channels reduce the number of separate converter packages and shorten sensitive analog connections. The 28-pin SSOP footprint supports dense consumer electronics layouts, although its fine lead pitch requires careful assembly. Place input and output filtering near the codec, provide a solid ground reference, and route the serial bus to the audio controller without crossing the analog section. Validate channel separation, output level, and timing against the final test setup.
推薦
Portable Consumer Audio Product
PCM3001E supports portable consumer audio products that need an economical, highly integrated stereo codec. Combining 18-bit conversion, digital audio transfer, and hardware line-output control in one package can reduce board area and external component count. The CMOS implementation and consumer-oriented feature set align with cost-sensitive equipment. Power efficiency still depends on the selected operating mode and external regulator design, while analog performance depends on clean supplies and low-noise reference paths. Keep the codec away from display and wireless switching circuitry, and verify the supported supply range and operating temperature for the finished product.
推薦
Multimedia Speaker Interface
PCM3001E can serve as the central codec in a multimedia speaker interface that accepts a digital audio stream and provides single-ended analog outputs to an amplifier stage. Hardware line-output control allows the system to manage output behavior through external control signals rather than relying only on software. The device's 18-bit stereo DACs and compact SSOP package fit cost-sensitive consumer electronics. Design the output path around the load impedance and required signal level, add the recommended output filtering, and keep the amplifier return current out of the codec's analog ground region. Confirm output swing and distortion targets from the manufacturer data.
推薦
Digital Audio Recording Module
PCM3001E is appropriate for a digital recording module that must convert stereo analog line-level inputs to a serial digital stream for storage or transmission. Its two single-ended ADC channels provide a straightforward stereo capture path, while the serial interface can be configured through device pins. Place the analog input stages and codec on the same side of the board, maintain a continuous return plane, and keep the digital processor and its high-speed clocks away from the input traces. Use the manufacturer's recommended input network and confirm the exact input range, sampling rates, and conversion performance before selecting component values.
推薦
Shared-Serial-Interface Audio Product
PCM3001E can support a shared-serial-interface audio product because its data format is pin-programmable and its control functions are hardware accessible. These characteristics allow a system controller to configure operating modes without dedicating a large register interface to the codec. The design must still respect electrical timing and pin-mode requirements for the selected format. Build a mode-control table before PCB routing, reserve the required configuration pins, and test startup states to prevent unintended audio or control behavior. This application is especially relevant to multi-function consumer products that share limited host-controller pins.
推薦
推薦產品摘要
工程參考資料，適用於 PCM3001E — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PCM1746E |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 28-pin SSOP | SSOP28 |
| Product Type | Stereo audio codec | Stereo audio codec |
| Converter Resolution | 18 bit | 18 bit |
| ADC Channels | 2 ADC | 2 ADC |
| DAC Channels | 2 DAC | 2 DAC |
| Digital Audio Interface | Serial | Serial |
| Analog Signal Type | Single-ended | Single-ended |
主要差異化特點
- Integrated stereo conversion reduces separate codec component count (對比PCM1746E)
- Hardware-selectable serial data formats (對比PCM1746E)
- Dedicated hardware line-output control (對比PCM1746E)
設計說明
Keep the PCM3001E analog input and output paths on the same board region as the codec, and place their passive networks directly beside the associated pins. Route the serial interface and clock toward the host controller without crossing the analog section. A continuous ground plane helps provide a low-impedance return, but analog and digital currents should not share narrow neck regions beneath the package.
Use the manufacturer application circuit to select the supply topology and input, output, and bypass capacitors. Place each decoupling capacitor as close as practical to its power pin and orient it to minimize loop area between the capacitor and device. Verify ripple, startup sequencing, and the permitted supply range because those electrical requirements are not established by the catalog excerpts.
Provide a low-jitter clock and preserve serial-data timing to the host controller. Use short clock and data traces, avoid long stubs, and keep switching nodes and high-current return paths away from the codec. If the serial bus is impedance-sensitive, calculate termination from the actual host-driver and PCB configuration rather than adding an arbitrary series resistor.
Do not assume that equal package dimensions prove interchangeability. Before substituting PCM1746E for PCM3001E, compare every numbered pin, supply rail, analog bias point, control polarity, clock requirement, timing parameter, and recommended external component. Prototype the assembled board and verify idle noise, output level, channel separation, and serial synchronization with the intended host.
合規資訊
The available product information does not establish RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The codec is a consumer interface IC rather than an automotive-qualified device.
