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NXP Semiconductors UDA1342TS/N1,518
- Part No.:
- UDA1342TS/N1,518
- Manufacturer:
- NXP Semiconductors
- Category:
- CODECS
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
UDA1342TS/N1,518.pdf
- Description:
- IC AUDIO CODEC 24BIT 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,539
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Product details
Overview
UDA1342TS/N1,518 from NXP Semiconductors is a 24-bit stereo audio CODEC IC integrating dual-channel 4-input ADCs with programmable gain amplifiers (0–24 dB), dual-channel DACs with FSDAC architecture, digital de-emphasis, bass/treble control, and L3/I²C/static pin configuration. It operates from 2.7–3.6 V, supports 16–110 kHz sampling, and targets portable MiniDisc recorders and playback systems requiring low-power, high-SNR analog front-end and flexible digital audio processing.
For engineers reviewing the UDA1342TS/N1,518 datasheet, UDA1342TS/N1,518 pinout, UDA1342TS/N1,518 application, or UDA1342TS/N1,518 equivalent, this page delivers verified technical context, exact pin functions, real-world audio system integration constraints, confirmed alternative parts with documented interface and feature trade-offs, and supply-chain support for volume production in consumer audio OEM designs.
Technical Context
The UDA1342TS/N1,518 implements bitstream conversion using a 5th-order noise shaper at 64fs and a Filter Stream DAC (FSDAC) that eliminates need for external analog post-filtering. Its ADC front-end features double-differential mode for +3 dB SNR improvement and DC-cancellation filters to suppress offset before digital mixing.
Digital audio routing includes independent left/right logarithmic volume control, mute with cosine roll-off (24 ms soft, 750 µs quick), and programmable input oversampling (1×/2×/4× fs) - where quad-speed mode (e.g., 192 kHz) disables tone controls and de-emphasis. Control is supported via L3-bus (dual device addresses), I²C-bus, or static pin mode with fixed format selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7–3.6 V analog/digital rails; enables battery-powered portable operation without level shifters. |
| ADC Input Channels | 4 single-ended inputs (2× stereo pairs); selectable via IPSEL pin or register for dual-source recording. |
| SNR (A-weighted) | 101 dB in double-differential ADC mode; ensures high-fidelity capture of low-level audio signals. |
| DAC Output Architecture | FSDAC with integrated semi-digital reconstruction filter; no external RC post-filter required. |
| Sampling Range | 16–110 kHz; full feature set active up to 55 kHz in 768fs mode, supporting MD-standard 44.1 kHz and professional 96 kHz. |
| Interface Options | L3-bus (2 device addresses), I²C-bus, or static pin control; allows firmware flexibility or cost-optimized fixed-function designs. |
| THD+N @ 48 kHz | −90 dB at −1 dBFS; meets MiniDisc line-level distortion requirements without analog trimming. |
Pinout & Package
UDA1342TS/N1,518 is housed in a 28-pin SSOP package (SOT341-1), 5.3 mm body width, with exposed pad not electrically connected per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINL1 / VINR1 | ADC analog input (stereo pair 1) | Accepts 0.5–2 VRMS signals; gain configurable 0–24 dB in 3 dB steps. |
| VINL2 / VINR2 | ADC analog input (stereo pair 2) | Enables dual-source recording; selected via IPSEL pin or register. |
| VOUTL / VOUTR | DAC analog output (stereo) | 0.9 VRMS full-scale output; voltage scales linearly with VDDA(DAC) rail. |
| SYSCLK | System clock input | Accepts 256fs/384fs/512fs/768fs; must be phase-locked to BCK/WS for slave-mode integrity. |
| L3DATA / L3CLOCK / L3MODE | L3-bus interface signals | Open-drain/data/clock lines; support 2-device addressing via IPSEL for multi-CODEC systems. |
| STATIC | Control mode select | High = static pin mode; Low + L3MODE Low = L3-bus; Low + L3MODE High = I²C-bus. |
| QMUTE | Hardware quick-mute trigger | Overrides software mute with 750 µs cosine roll-off; critical for pop-free power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Double-differential ADC mode | Improves SNR by 1 dB and THD+N by 3 dB vs. normal mode; requires paired input channels and register enable. |
| Digital silence detection | Configurable period (register 14); triggers status flag for auto-record start/stop in portable devices. |
| Independent channel volume control | Logarithmic 63-step attenuation per channel (−63.5 to +24 dB); prevents clipping during digital mixing. |
| De-emphasis filtering | Hardware-accelerated 32/44.1/48/96 kHz options; applied in DAC path before interpolation, reducing MCU load. |
| DC cancellation filter | Integrated high-pass filter before ADC mixer; removes offset drift without external components. |
Applications
| MiniDisc Portable Recorder | MD Home Docking Station |
|---|---|
Use Scenario: Battery-powered handheld MD recorder capturing line/mic input with real-time DSP. IC Role / Device Role / Timing Role: Single-chip ADC+DAC CODEC handling analog input conditioning, 24-bit conversion, de-emphasis, and volume control under L3-bus MCU supervision. Use Value: Eliminates discrete op-amps and filters; 101 dB SNR enables clean 20–20 kHz capture; QMUTE prevents startup pops during record button press. |
Use Scenario: AC-powered MD dock synchronizing playback with optical SPDIF and analog line-out. IC Role / Device Role / Timing Role: DAC-centric role converting digital MD stream to analog line-level output with bass/treble tuning and mute control. Use Value: FSDAC architecture delivers 100 dB SNR without external reconstruction filter; I²C interface simplifies host MCU firmware vs. L3-bus timing constraints. |
| Portable Audio Player w/ Recording | Dual-Source Studio Monitor Preamp |
Use Scenario: Flash-based audio player supporting voice memo recording via built-in mic. IC Role / Device Role / Timing Role: ADC processes mic signal with PGA gain boost and digital noise suppression; DAC drives headphone amp. Use Value: Programmable 0–24 dB PGA gain adapts to varying mic sensitivities; digital silence detection auto-stops recording during pauses. |
Use Scenario: Compact desktop monitor with switchable analog inputs (line/mic) feeding stereo DAC output. IC Role / Device Role / Timing Role: Dual ADC paths accept two simultaneous sources (e.g., DAW output + mic), mixed digitally before DAC. Use Value: IPSEL pin selects between input banks; digital mixer (−63.5 to +24 dB per channel) enables precise level balancing without analog trim pots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio CODEC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UDA1341TS | Lower SNR (98 dB), no double-differential mode, identical pinout and L3/I²C interface. | Lacks advanced ADC noise performance; suitable only where 3 dB SNR margin is acceptable. | Select UDA1341TS only if cost reduction outweighs SNR requirement and double-differential mode is unused. |
| AK4537VN | 24-bit sigma-delta CODEC with 102 dB SNR, I²C-only control, no L3-bus or static pin mode. | Requires I²C host; lacks IPSEL channel select and QMUTE hardware mute; higher supply current (12 mA). | Choose AK4537VN when maximum SNR is critical and system already uses I²C-only architecture without need for pin-strapped configuration. |
Compared with UDA1342TS/N1,518, UDA1341TS trades 3 dB SNR and double-differential capability for lower cost in pin-compatible footprint, while AK4537VN offers +1 dB SNR but removes L3-bus flexibility and hardware quick-mute - making UDA1342TS/N1,518 optimal for MiniDisc-class portable systems needing balanced feature set, low power, and multiple control options.
Availability
UDA1342TS/N1,518 is available at Aetrix Electronics and suitable for MiniDisc recorders, portable audio players with recording, home docking stations, and studio preamplifiers requiring stable component supply across long-lifecycle consumer electronics programs.
Supply support for UDA1342TS/N1,518 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and consumer applications, with deep expertise in analog and mixed-signal audio ICs.
The UDA1342TS/N1,518 belongs to NXP's legacy audio CODEC product line designed specifically for portable digital audio equipment requiring low-voltage operation, high dynamic range, and integrated digital signal processing - notably targeting MiniDisc ecosystem compatibility.
FAQ
What is the maximum sampling frequency supported by the UDA1342TS/N1,518 with full feature set enabled?
The UDA1342TS/N1,518 supports full feature set - including de-emphasis, bass/treble, and digital mixing - up to 55 kHz when using a 768fs system clock. At 44.1 kHz and 48 kHz, all features operate normally; at 96 kHz in double-speed mode, only master volume and mute remain functional. Quad-speed mode (e.g., 192 kHz) disables all DSP features per datasheet Table 4.
Does the UDA1342TS/N1,518 require external analog filters for DAC output?
No, the UDA1342TS/N1,518 does not require external analog post-filtering. Its Filter Stream DAC (FSDAC) integrates a semi-digital reconstruction filter using current-source coefficients summed at the op-amp virtual ground, delivering inherent out-of-band noise attenuation. The datasheet explicitly states "No analog post filtering required for DAC" in Section 1 Features.
How is ADC input channel selection implemented on the UDA1342TS/N1,518?
ADC input channel selection on the UDA1342TS/N1,518 is performed via the IPSEL pin (Pin 9) in static pin mode, or through register 0x0E (ADC mode) in L3-bus/I²C mode. When IPSEL = 0, VINL1/VINR1 are active; when IPSEL = 1, VINL2/VINR2 are selected - enabling dual-source recording without MCU intervention in fixed-function designs.
What is the function of the QMUTE pin on the UDA1342TS/N1,518?
The QMUTE pin (Pin 23) provides hardware-level quick mute override for the UDA1342TS/N1,518. When asserted, it initiates a 32-sample cosine roll-off (750 µs at 44.1 kHz), bypassing software-controlled mute timing. This ensures pop-free muting during power-up, record start/stop, or user interface events - a critical reliability feature for portable audio products.
Can the UDA1342TS/N1,518 operate with different supply voltages for ADC and DAC sections?
Yes, the UDA1342TS/N1,518 supports independent analog supplies: VDDA(ADC) (Pin 3) and VDDA(DAC) (Pin 25) each accept 2.7–3.6 V. This allows separate regulation or sequencing - for example, powering DAC from a cleaner LDO while ADC runs from a switched supply - improving PSRR and minimizing crosstalk between conversion paths.
UDA1342TS/N1,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Stereo Audio
- Data Interface:
- Serial
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 4 / 2
- Sigma Delta:
- No
- S/N Ratio, ADCs / DACs (db) Typ:
- 100 / 100
- Dynamic Range, ADCs / DACs (db) Typ:
- -
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SSOP
UDA1342TS/N1,518 FAQ
1.How can I place an order for UDA1342TS/N1,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for UDA1342TS/N1,518 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for UDA1342TS/N1,518 reliable?
The price and inventory of UDA1342TS/N1,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UDA1342TS/N1,518 is usually 5 days.
3.What payment methods are accepted for UDA1342TS/N1,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UDA1342TS/N1,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UDA1342TS/N1,518?
UDA1342TS/N1,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UDA1342TS/N1,518 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for UDA1342TS/N1,518?
For technical support, including UDA1342TS/N1,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UDA1342TS/N1,518 requirements.
6.How does Aetrix verify that UDA1342TS/N1,518 is sourced from the original manufacturer or authorized distributors?
All UDA1342TS/N1,518 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that UDA1342TS/N1,518 meets industry standards.
7.What is the process for return or replacement of UDA1342TS/N1,518?
All UDA1342TS/N1,518 units undergo pre-shipment inspection (PSI). If there is an issue with UDA1342TS/N1,518, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The UDA1342TS/N1,518 part is unused and in its original packaging.
Return procedure for UDA1342TS/N1,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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