PCM1730E - 24-Bit 192kHz Stereo DAC | Texas Instruments
MPN: PCM1730E ✓ ActivePCM1730E Overview
A digital-to-analog converter, or DAC, converts digital audio samples into an analog voltage or current representation. The PCM1730E belongs to the DAC hierarchy within ADC/DAC and signal-conversion integrated circuits. Unlike a digital signal processor or codec, it performs the final conversion from a digital audio stream to analog stereo outputs. Its balanced current-output architecture provides two complementary channels and can simplify the design of high-performance analog output stages.
The PCM1730E supports 24-bit audio data at sampling rates up to 192 kHz. The supplied distributor data reports typical dynamic range and signal-to-noise ratio of 117 dB, typical THD+N of 0.0004%, and a full-scale differential current output of 2.2 Vrms at the post amplifier. These figures make the converter relevant to applications where low distortion and high dynamic range are more important than low cost or minimal package size.
Advanced segment DAC architecture is the central technical feature of the device. According to the Texas Instruments product description, this architecture is intended to achieve excellent dynamic performance and improved tolerance to clock jitter. That behavior is particularly useful when the digital audio clock is generated through a divider, PLL, or other system that may increase timing jitter. The converter accepts I2S-format digital audio according to the distributor listing, while the manufacturer describes support circuitry integrated with the stereo DAC core.
Typical uses include CD and DVD player output stages, digital mixing consoles, active loudspeaker electronics, USB and network audio interface output sections, and high-fidelity consumer audio equipment. In these systems, the PCM1730E can be paired with a current-to-voltage converter, an audio output amplifier, or a headphone and line-driver stage. The choice of external circuitry must account for output loading, gain, distortion, and the required balanced or single-ended signal path.
A critical design consideration is that converter performance depends on the complete analog and digital signal chain, not on the DAC alone. Clean supplies, a low-jitter master clock, correctly implemented digital interfaces, suitable output filtering, and a low-noise post-amplifier help preserve the reported 117 dB dynamic performance. Board layout should keep digital and analog return paths controlled and provide a low-impedance return for every supply pin.
This product record combines manufacturer architecture information, distributor specifications, sourcing links, verified data gaps, and engineering-focused design guidance. It also distinguishes verified drop-in alternatives from devices that merely share a package or audio function, preventing a package-level match from being presented as a guaranteed PCB replacement.
Drop-in alternatives for PCM1730E — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesPCM1730E Maximum Ratings & Electrical Characteristics
| Device Type | Stereo audio digital-to-analog converter |
| Resolution | 24 bit |
| Maximum Sampling Rate | 192 kHz |
| DigiKey Listed Sampling Rate | 200 kHz |
| Digital Audio Interface | I2S |
| Number of Channels | 2 channels |
| Output Architecture | Balanced current outputs |
| DAC Architecture | Advanced segment DAC |
| Dynamic Range | 117 dB typical |
| Signal-to-Noise Ratio | 117 dB typical |
| THD+N | 0.0004% typical |
| Full-Scale Output | 2.2 Vrms differential current at post amplifier |
| Process Technology | CMOS |
| Package | 28-lead SSOP |
| Clock Jitter Tolerance | Improved with advanced segment DAC architecture |
PCM1730E 28-lead ssop Pin Configuration Guide
Pin configuration for PCM1730E (28-lead ssop package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for PCM1730E.
Refer to the datasheet for full pin configuration.
Typical Applications
PCM1730E is suitable for 6 applications: High-Fidelity CD and Network Audio Player, Professional Digital Mixing Console, Active Loudspeaker Power Amplifier, USB and Network Audio Interface, Digital Audio Converter and TV, Studio Monitor and Audio Measurement.
High-Fidelity CD and Network Audio Player
The PCM1730E fits a high-fidelity player output stage because it converts 24-bit digital audio at rates up to 192 kHz while providing 117 dB typical dynamic range and 0.0004% typical THD+N. The balanced current outputs can feed a current-to-voltage stage and a low-noise post amplifier. Compared with a converter selected only by resolution, the documented 192 kHz capability, segment DAC architecture, and improved clock-jitter tolerance provide a stronger signal-chain foundation.
Recommended
Professional Digital Mixing Console
A digital mixing console can use PCM1730E for its stereo monitoring or line-output conversion section. Its 24-bit format preserves high-resolution source data, while 117 dB typical signal-to-noise ratio and 0.0004% typical THD+N support low-noise monitoring paths. The converter operates from digital I2S audio, making it suitable after a system DSP or digital mixer. Balanced current outputs help simplify differential routing, although the final post amplifier and trim network require careful noise and gain planning.
Recommended
Active Loudspeaker Power Amplifier
PCM1730E is applicable at the digital input stage of an active loudspeaker controller. A 192 kHz-capable DAC allows compatible digital sources to feed the crossover, DSP, and power-amplifier chain without an early sample-rate constraint. Its balanced current outputs can support a symmetric analog stage, and its 117 dB typical dynamic range is suitable for preserving low-level program material. The system should maintain a low-jitter clock and clean analog supplies to realize the converter's published performance.
Recommended
USB and Network Audio Interface
The PCM1730E can serve as the analog-output converter in a USB or network audio interface after the host or network audio controller has processed the digital stream. Its I2S input, 24-bit resolution, and support for sampling rates up to 192 kHz align with common high-resolution playback paths. The balanced current outputs are useful for driving a low-noise differential output stage. Realized dynamic range remains system dependent because USB clock recovery, the post amplifier, isolation strategy, and output filtering all contribute noise.
Recommended
Digital Audio Converter and TV
PCM1730E can provide a high-resolution stereo output section in a digital audio converter, television, or media appliance. Consumer systems often benefit from the 192 kHz capability and balanced current outputs when the circuit is designed for a clean differential path. The 24-bit conversion format supports detailed source data, while the 117 dB typical dynamic range creates a useful foundation for home-theater playback. Board-level EMI control, stable references, and appropriate output filtering remain essential for practical performance.
Recommended
Studio Monitor and Audio Measurement
PCM1730E is well matched to a studio monitoring or audio-measurement signal path where low distortion and high dynamic range help reveal source and conversion errors. The reported 0.0004% typical THD+N and 117 dB typical dynamic range provide useful baseline figures for a 24-bit converter. Balanced current outputs can feed an instrumentation-oriented post amplifier, while the advanced segment DAC architecture improves tolerance to clock jitter. Calibration, grounding, and measurement bandwidth must be considered when interpreting converter-level results.
Recommended
Recommended Products Summary
Engineering reference data for PCM1730E — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | 28-lead SSOP |
| Brand | Texas Instruments |
| Resolution | 24 bit |
| Maximum Sampling Rate | 192 kHz |
| Channels | 2-channel stereo |
| Output Architecture | Balanced current outputs |
| Dynamic Range | 117 dB typical |
| THD+N | 0.0004% typical |
| Digital Interface | I2S |
Key Differentiators
- Verified 192 kHz stereo conversion (vs PCM1796DB)
- Advanced segment DAC architecture (vs PCM1796DB)
- Documented high-performance audio figures (vs PCM1796DB)
- Balanced stereo current outputs (vs PCM1796DB)
Design Notes
Treat the PCM1730E master clock and I2S signals as a coordinated interface. Route the clock and data from the digital source with controlled impedance, keep the ground reference continuous, and avoid routing them directly beneath sensitive analog outputs. The advanced segment DAC architecture improves clock-jitter tolerance, but it does not correct excessive timing jitter introduced upstream. Verify all supported sampling-rate and interface modes in the manufacturer datasheet before fixing the digital clock architecture.
Separate the digital input region from the balanced analog-output and post-amplifier region. Place decoupling capacitors at the relevant supply pins with short, low-inductance connections, and provide a low-impedance ground plane or carefully controlled ground return according to the application guidance. Because the device produces differential current outputs, keep the two channels symmetrical and route them as a pair where practical to limit differential timing and noise pickup.
Do not treat a shared 28-lead SSOP package as proof of drop-in compatibility. PCM1796DB appears in the supplied comparison data as a 24-bit stereo DAC in a 28-lead SSOP, but individual pin assignments, voltage limits, clock requirements, output stages, and digital modes were not verified. Before substituting it, compare every power, ground, digital-input, control, and analog-output pin against both official datasheets and confirm the external load network.
System-level noise and distortion can easily exceed the converter's intrinsic performance. Use low-noise analog supplies, stable references, suitable output resistors or current-to-voltage networks, and a post amplifier with adequate headroom. The reported 117 dB dynamic range and 0.0004% THD+N are typical device values and should not be treated as guaranteed end-product specifications. Measure the complete channel under the intended output load and bandwidth.
Compliance Information
The supplied Verified Web Data does not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for PCM1730E. These fields are therefore marked unknown rather than inferred.
