PCM3001EG - 18-Bit Stereo Audio Codec | Texas Instruments
MPN: PCM3001EG ✓ ActivePCM3001EG Overview
An audio codec is an interface IC that converts between digital audio data and analog signals. Its functional hierarchy is stereo audio codec, audio interface IC, interface IC, and integrated circuit. The PCM3001EG occupies the conversion boundary between a digital audio engine and an analog speaker or line-level signal path, combining an 18-bit stereo codec function with hardware-controlled line output in one package.
The principal verified characteristics are 18-bit stereo resolution, single-ended analog inputs and outputs, a 28-pin SSOP package, and hardware-controlled line-out operation. The 18-bit data format provides more precision than common 16-bit audio systems while preserving compatibility with digital audio designs that process 18-bit samples. Single-ended analog signal paths simplify board construction by reducing the number of external input and output stages required when a balanced signal path is unnecessary.
The hardware line-output control is useful in systems where analog output muting or operating state must respond quickly to external hardware events. Designers can use that control for source selection, muting, or mode changes without relying entirely on a software driver. System-level timing, clocking, and supported digital interface formats should be confirmed in the manufacturer datasheet before the codec is placed into a new design.
Typical applications include consumer audio equipment, multimedia decoding boards, portable media systems, sound-effect generators, and industrial audio panels. The 28-pin SSOP footprint also supports legacy-style through-hole assembly processes where a fine-pitch BGA or QFN would be unsuitable. Because the analog path is single-ended, grounding and trace layout become especially important for preventing analog noise from coupling into the digital interface.
When designing around the PCM3001EG, reserve filtering and impedance-matching networks for each analog input and output, and keep the analog traces short and shielded from clock and data lines. Use the pin-description table in the manufacturer datasheet when assigning PCB tracks and checking the relationship between the digital interface pins, analog pins, power rails, and hardware control inputs. This page combines the confirmed device characteristics with practical integration guidance and sourcing information.
Drop-in alternatives for PCM3001EG — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesPCM3001EG Specifications
| Device Type | Stereo audio codec |
| Resolution | 18 bit |
| Channel Count | 2 channels (stereo) |
| Analog Input Type | Single-ended |
| Analog Output Type | Single-ended |
| Line Output Control | Hardware control |
| Package Type | 28-pin SSOP |
| Pin Count | 28 pins |
| Mounting Type | Surface mount |
PCM3001EG 28-pin ssop Pin Configuration Guide
Pin configuration for PCM3001EG (28-pin ssop package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for PCM3001EG.
Refer to the datasheet for full pin configuration.
Typical Applications
PCM3001EG is suitable for 6 applications: Consumer Multimedia Audio Playback, Portable Media and Audio Accessory, Industrial Sound and Alarm Panel, Sound Effects and Tone Generation, Digital Audio Interface Card, Audio Monitoring and Communication Module.
Consumer Multimedia Audio Playback
The PCM3001EG fits consumer multimedia systems that decode digital audio and feed an analog line stage. Its 18-bit stereo conversion and single-ended analog input and output reduce the component count compared with a balanced codec implementation. Place the codec close to the digital audio source and analog output network, then use the hardware line-output control for fast source or mute behavior. Verify the supported digital format, master-clock rate, and sample rate against the manufacturer datasheet before selecting the surrounding clocking and filtering components.
Recommended
Portable Media and Audio Accessory
The 18-bit stereo PCM3001EG can serve as the audio interface in portable media accessories, sound modules, and compact playback units where board area is constrained. The 28-pin SSOP package provides a practical assembly option for designs that cannot easily use ball-grid-array packages. Single-ended routing shortens the analog path, but careful grounding is still necessary because analog traces run close to high-speed digital signals. Confirm the device's operating supply range and supported audio rate before designing the battery or USB-derived supply network.
Recommended
Industrial Sound and Alarm Panel
PCM3001EG is suitable for industrial sound panels that receive digital audio for announcements or alerts and present it through a single-ended line output. The hardware line-output control can support external mute or operating-state logic without depending entirely on a software command. For this environment, isolate the analog output network from switching regulators and digital processors, follow the recommended grounding scheme, and confirm operating temperature requirements in the manufacturer datasheet before approving the assembly for industrial use.
Recommended
Sound Effects and Tone Generation
The PCM3001EG can be used in tone-generation and sound-effect modules that produce stereo audio from a digital processor. Its 18-bit data resolution can preserve low-level signal detail when the source and clocking architecture support it, while the single-ended outputs simplify connection to external amplifiers. Use the manufacturer timing diagrams to configure the digital interface and master clock, and design the output filters around the specified load and signal amplitude. Avoid substituting the PCM3008 without resolving its different pin assignments and integrated headphone amplifier.
Recommended
Digital Audio Interface Card
A dedicated digital audio interface card can use the PCM3001EG to translate a digital audio stream into analog stereo line signals. The 28-pin SSOP package and single-ended I/O suit straightforward card-level layouts, while hardware control of the line output allows the card to follow an external enable or mute function. Place the codec on the analog side of the board partition, provide local bypass capacitors according to the recommended application circuit, and route clocks and data away from the output traces to limit coupling into the audio path.
Recommended
Audio Monitoring and Communication Module
The PCM3001EG can support monitoring, intercom, and communication modules that require a compact stereo audio interface. Hardware-controlled line output is useful when the module must react to line-state or channel-selection signals, and the 18-bit stereo format can carry more precision than a 16-bit path when the complete system supports it. Validate the digital interface mode, sample rate, and clock source before layout, and include filtering and termination that match the external amplifier input to avoid excessive loading or unintended gain.
Recommended
Engineering reference data for PCM3001EG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Brand | Texas Instruments |
| Package | 28-pin SSOP |
| Device Type | Stereo audio codec |
| Resolution | 18 bit |
| Channel Count | 2 channels (stereo) |
| Analog Input Type | Single-ended |
| Analog Output Type | Single-ended |
| Line Output Control | Hardware control |
| Integrated Headphone Amplifier | No |
Key Differentiators
- Single-ended analog architecture (vs PCM3008)
- Hardware-controlled line output (vs PCM3008)
- 18-bit stereo conversion (vs PCM3008)
Design Notes
Keep the PCM3001EG close to the analog connector or amplifier input, and route the single-ended analog traces away from clock, serial-data, and switching-supply nodes. A single-ended path has no common-mode rejection benefit, so trace geometry, ground references, and shielding directly affect audible noise and channel separation. Follow the analog and digital partitioning shown in the manufacturer application guidance when placing the codec.
Use the power-supply network and bypass capacitors shown in the manufacturer datasheet, and place each decoupling component directly beside its intended supply pin. Digital audio converters can mix switching or clock-related energy into the analog output, so short supply-current paths and a quiet ground reference are as important as nominal filtering. Confirm the permitted operating supply range and load current from the datasheet before selecting regulators.
Do not treat the PCM3008 as a board-level substitute for the PCM3001EG. The MODE, SCLK, and DIN/DO assignments differ between the two 28-pin SSOP devices, and the PCM3008 provides an integrated headphone amplifier that changes the surrounding circuit. For any alternate device, compare every pin, clock requirement, supply connection, and analog output function before approving the substitution.
Compliance Information
Compliance attributes are not stated in the retrieved product and distributor information. AEC-Q100 is not applicable because PCM3001EG is an audio interface IC rather than an automotive-qualified power or semiconductor device.
