Specifications
| Type | Description |
|---|---|
| Part Number | PCM5122 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | TSSOP (28), 9.7 mm x 4.4 mm nominal body size |
| Dynamic Range | 112 dB |
| Signal-to-Noise Ratio | 112 dB |
| THD | -93 dB |
| THD+N | -93 dB |
| Full-Scale Single-Ended Output | 2.1 VRMS |
| Sampling Frequency | 8 kHz to 384 kHz |
| Audio Data Width | 16, 20, 24, and 32 bit |
| PCM Data Formats | I2S, left-justified, right-justified, TDM/DSP |
| Control Interfaces | SPI or I2C |
| Configuration Modes | Software or hardware configuration |
| Normal Digital Filter Latency | 20/fS |
| Low-Latency Digital Filter Latency | 3.5/fS |
| System Clock Frequency | Up to 50 MHz |
| Supported System Clock Multiples | 64, 128, 192, 256, 384, 512, 768, 1024, 1152, 1536, 2048, 3072 x fS |
| Minimum Load | 1 kΩ |
| Analog Supply Voltage | 3.3 V |
| Digital Supply Voltage | 1.8 V or 3.3 V |
| Digital Input Type | Failsafe LVCMOS Schmitt trigger |
| Charge Pump Supply Voltage | 3.3 V |
| Negative Charge Pump Rail | -3.3 V |
| Internal Logic Supply Rail | 1.8 V |
| Hardwired Gain Setting | 0 dB |
| Hardwired Gain Setting | 3 dB |
| Hardwired Gain Setting | 6 dB |
| Hardwired Gain Setting | 9 dB |
| Hardwired Gain Setting | 12 dB |
| Hardwired Gain Setting | 15 dB |
| Hardwired Gain Setting | -6 dB |
| Hardwired Gain Setting | -3 dB |
| Supply Voltage Absolute Maximum | -0.3 V to 3.9 V |
| LDO Absolute Maximum Voltage | -0.3 V to 2.25 V |
| Digital Input Voltage Absolute Maximum | -0.3 V to 2.25 V |
| Digital Input Voltage Absolute Maximum | -0.3 V to 3.9 V |
| Analog Input Voltage Absolute Maximum | -0.3 V to 3.9 V |
| Operating Junction Temperature | -40°C to 130°C |
| Storage Temperature | -65°C to 150°C |
| ESD Rating HBM | ±2000 V |
| ESD Rating CDM | ±750 V |
| Datasheet Status | request_only |
Product Overview
PCM5122 is a Texas Instruments Signal_Chain stereo audio DAC in a TSSOP (28) package with 9.7 mm x 4.4 mm nominal body size. The device supports PCM audio sampling frequencies from 8 kHz to 384 kHz and audio input data widths of 16, 20, 24, and 32 bits. Its digital audio interface supports I2S, left-justified, right-justified, and TDM/DSP data formats.
For PCM5122A, the extracted specifications list 112 dB dynamic range, 112 dB signal-to-noise ratio, and -93 dB THD. THD+N is specified as -93 dB at -1 dBFS for PCM5122 with a 3.3-V power supply. The ground-centered single-ended output is specified at 2.1 VRMS with a 3.3-V power supply, and the integrated line driver supports a minimum 1 kΩ load.
Configuration can be handled through software or hardware modes, with SPI or I2C available in software control mode. The device uses 3.3 V AVDD, 1.8 V or 3.3 V DVDD, 3.3 V CPVDD, a -3.3 V negative charge-pump rail, and a 1.8 V internal logic supply rail. Applications include stereo PCM audio conversion, audio line-driver stages, and systems requiring selectable hardwired gain settings.
Key Features
- 112 dB dynamic range for PCM5122A
- 112 dB signal-to-noise ratio for PCM5122A
- -93 dB THD and -93 dB THD+N
- 2.1 VRMS ground-centered single-ended output
- 8 kHz to 384 kHz PCM sampling support
- 16-, 20-, 24-, and 32-bit audio input support
- I2S, left-justified, right-justified, and TDM/DSP formats
- SPI or I2C software control interface
- Software or hardware device configuration modes
- Normal and low-latency 8x oversampling filter options
- Up to 50 MHz SCK input frequency
- Integrated line driver supports 1 kΩ minimum load
Typical Applications
- PCM audio output stages
- Stereo DAC subsystems
- Digital audio interface conversion
- Audio line-driver outputs
- I2S audio signal paths
- TDM/DSP audio interfaces
- Software-controlled audio hardware
- Hardware-configured audio designs
Procurement Notes
When requesting a quote for PCM5122, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What audio formats does PCM5122 support?
PCM5122 supports I2S, left-justified, right-justified, and TDM/DSP digital audio formats. The supported audio input data widths are 16, 20, 24, and 32 bits, with PCM audio interface sampling from 8 kHz to 384 kHz.
What are the key PCM5122A audio performance values?
For PCM5122A, the extracted specifications list 112 dB dynamic range, 112 dB signal-to-noise ratio, and -93 dB THD. THD+N is specified as -93 dB at -1 dBFS for PCM5122 with a 3.3-V power supply.
How can PCM5122 be configured and controlled?
PCM5122 supports software or hardware device configuration. In software control mode, the extracted facts list SPI or I2C as the available control interfaces, while hardwired gain settings are selected through ATT2:ATT1:ATT0 pin combinations.
What supply rails are specified for PCM5122?
PCM5122 uses a 3.3 V AVDD analog supply, 1.8 V or 3.3 V DVDD digital supply, and 3.3 V CPVDD charge-pump supply. The extracted facts also list a -3.3 V VNEG rail and 1.8 V LDOO internal logic rail.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.