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NXP Semiconductors UDA1344TS/N2,512
- Part No.:
- UDA1344TS/N2,512
- Manufacturer:
- NXP Semiconductors
- Category:
- CODECS
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
UDA1344TS/N2,512.pdf
- Description:
- IC AUDIO CODEC W/DSP 28-SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,293
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Product details
Overview
UDA1344TS/N2,512 from NXP Semiconductors is a low-voltage, low-power stereo audio CODEC integrating sigma-delta ADC and DAC with digital sound processing (DSP) features. It operates from a 3.0 V supply, supports sampling rates from 8 to 55 kHz, delivers 95 dB SNR (ADC) and 100 dB SNR (DAC), and features integrated DC-cancellation filtering and L3 microcontroller interface control - enabling compact portable audio record/playback systems.
For engineers reviewing the UDA1344TS/N2,512 datasheet, UDA1344TS/N2,512 pinout, UDA1344TS/N2,512 application, or UDA1344TS/N2,512 equivalent, this page provides verified functional identity, SSOP28 package mapping, confirmed I²S/MSB/LSB interface compatibility, real-world power-performance trade-offs (69 mW full operation), and validated alternatives for portable audio system design.
Technical Context
The UDA1344TS/N2,512 implements dual 3rd-order sigma-delta modulators for ADC and a cascade interpolation + noise-shaping architecture for DAC, both operating at 128× oversampling. Its decimation filter uses two-stage FIR processing, while the DAC employs a Filter Stream DAC (FSDAC) with on-board op-amps eliminating need for external post-filtering.
Digital control is supported in two modes: static-pin configuration (for fixed-function applications) and L3 serial interface (enabling full DSP feature access including de-emphasis, bass/treble, volume, mute, and DC cancellation). The device is pin- and function-compatible with UDA1340M in L3 mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7–3.6 V across all rails (VDDA(ADC), VDDA(DAC), VDDO, VDDD); enables single 3.0 V battery-powered operation |
| Sampling Rate Range | 8–55 kHz; covers CD (44.1 kHz), DAT (48 kHz), voice (8–16 kHz), and high-fidelity portable audio |
| ADC SNR / THD+N | 95 dB (A-weighted, Vi = 0 V); −85 dB (0 dBFS); ensures clean recording of line-level analog inputs |
| DAC SNR / THD+N | 100 dB (A-weighted, code = 0); −90 dB (0 dBFS); supports high-fidelity playback without external reconstruction filter |
| Power Consumption | 69 mW (record + playback); 42 mW (playback only); 17 mW (power-down); critical for battery runtime in portable devices |
| Digital Interface | I²S-bus, MSB-justified, LSB-justified (16/18/20-bit); plus combined formats - supports legacy and modern audio SoCs |
| Control Interface | L3 serial (8-bit address + data transfer, LSB-first) or static pins (MC1/MC2); allows flexible integration with MCU-constrained or pin-limited designs |
Pinout & Package
UDA1344TS/N2,512 is housed in a plastic shrink small outline package (SSOP28) with 28 leads and 5.3 mm body width (SOT341-1), optimized for space-constrained portable audio PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSSA(ADC) | ADC analog ground | Separate ground return for ADC section to minimize coupling noise into sensitive analog input path |
| VDDA(ADC) | ADC analog supply | Dedicated 2.7–3.6 V rail for ADC modulator and front-end; decoupling required for PSRR >30 dB |
| VINL / VINR | Stereo ADC inputs | Differential-capable inputs supporting 1 V (RMS) standard or 2 V (RMS) via external 12 kΩ series resistor |
| Vref(A) | ADC reference voltage | 0.5 × VDDA(ADC) internal reference; buffered output with 24 kΩ source impedance |
| SYSCLK | System clock input | Accepts 256fs, 384fs, or 512fs master clock; must be frequency-locked to WS/BCK for stable sampling |
| BCK / WS / DATAI / DATAO | I²S/serial interface signals | Supports slave-mode operation only; BCK ≤ 128 × WS frequency; WS edge must align to BCK falling edge |
| MP1–MP5 | Multi-purpose pins | Configurable as L3DATA/L3CLOCK/L3MODE (L3 mode) or format/clock/mute/de-emphasis controls (static mode) |
| VOUTL / VOUTR | Stereo DAC outputs | Line-level outputs (900 mV RMS, 0.13 Ω source impedance); drive 5 kΩ loads directly; no post-filter needed |
| Vref(D) | DAC reference voltage | 0.5 × VDDA(DAC); scales DAC output proportionally with supply - critical for consistent level across battery discharge |
Key Features
| Feature | Design Value |
|---|---|
| Digital DC-cancellation filter | Configurable IIR high-pass filter (L3 mode only); removes microphone/line-input DC offset without external components |
| Digital de-emphasis | Programmable 32/44.1/48 kHz filters (L3 mode); restores frequency response for pre-emphasized digital audio sources |
| Digital volume control | 6-bit resolution (0 to −∞ dB in 1 dB steps); low MCU overhead via L3 interface; applies identically to left/right channels |
| ADC overload detection | MP1 asserts HIGH for ≥512fs when either channel exceeds −1.16 dBFS; enables automatic AGC or clipping warning |
| Flexible gain selection | 0 dB or 6 dB ADC input gain (via MP4 in static mode or MP5 in L3 mode); accommodates 1 V or 2 V (RMS) input signals |
| Power-down granularity | Independent ADC/DAC shutdown (L3 register PC1/PC0); reduces current to 25 μA (DAC) or 3.5 mA (ADC) for extended standby |
Applications
| Portable Digital Audio Recorder | USB Audio Interface Adapter |
|---|---|
Use Scenario: Battery-powered handheld recorder capturing speech and music with line/mic inputs. IC Role / Device Role / Timing Role: Dual-channel ADC digitizes analog inputs; DAC plays back monitoring audio; L3 interface configures gain, de-emphasis, and mute dynamically. Use Value: 95 dB SNR and 1 V (RMS) input support capture clean audio; 69 mW total power enables >10-hour runtime on 2×AA batteries. |
Use Scenario: Compact USB-to-analog adapter converting PC audio streams for headphones/speakers. IC Role / Device Role / Timing Role: DAC converts USB-received PCM data; ADC enables loopback or mic-in; I²S interface synchronizes with USB audio controller. Use Value: Integrated FSDAC eliminates external reconstruction filter; 100 dB SNR ensures studio-grade playback fidelity. |
| Embedded Voice Assistant Endpoint | Low-Cost MP3 Player Baseband |
Use Scenario: Always-on voice command device with far-field mic array and local wake-word detection. IC Role / Device Role / Timing Role: ADC digitizes multi-mic inputs; DC-cancellation filter removes bias drift; static-pin mode simplifies MCU interface. Use Value: 3.0 V operation matches Li-ion voltage range; 3.5 mA ADC power-down current extends idle battery life. |
Use Scenario: Entry-level flash-based MP3 player with stereo line-out and optional mic recording. IC Role / Device Role / Timing Role: DAC drives headphone amplifier; ADC records voice memos; MSB-justified I²S interface connects to low-cost audio SoC. Use Value: Pin compatibility with UDA1340M allows reuse of existing PCB layout; 28-pin SSOP eases hand-soldering during prototyping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stereo audio CODEC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UDA1340M | Same pinout and L3 functionality; lower ADC input capability (1 V RMS only); no 512fs SYSCLK support | Not suitable for 2 V RMS line-input recording or higher-resolution timing systems requiring 512fs clock | Select UDA1344TS/N2,512 when 2 V RMS input headroom or 512fs clock synchronization is required. |
| AK4531VN | 24-bit resolution; wider 1.8–3.6 V supply range; SPI/I²S interface; no L3 bus; higher 105 dB DAC SNR | Requires different MCU firmware and layout; lacks integrated DC cancellation and bass/treble DSP | Choose AK4531VN for higher-resolution playback where external DSP or custom filtering is acceptable. |
Compared with UDA1340M, UDA1344TS/N2,512 adds 2 V RMS input support and 512fs clock option; compared with AK4531VN, it trades bit depth and SNR for integrated L3-controlled DSP and lower system integration effort in portable record/playback designs.
Availability
UDA1344TS/N2,512 is available at Aetrix Electronics and suitable for portable audio recorders, USB audio adapters, voice assistant endpoints, and low-cost MP3 players requiring stable component supply and long-term lifecycle support.
Supply support for UDA1344TS/N2,512 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.
The UDA1344TS/N2,512 belongs to NXP's legacy audio CODEC product line, designed specifically for ultra-low-power, single-supply portable digital audio systems with integrated DSP - targeting cost-sensitive, battery-operated consumer electronics.
FAQ
What is the maximum input voltage supported by the UDA1344TS/N2,512 ADC?
The UDA1344TS/N2,512 ADC supports up to 2 V (RMS) input voltage when a 12 kΩ series resistor is used with 0 dB gain setting. Without the resistor, maximum input is 1 V (RMS) at 0 dB gain or 0.5 V (RMS) at 6 dB gain. Input voltage scales inversely with supply voltage per datasheet Note 2, so actual headroom varies with VDDA(ADC).
Does the UDA1344TS/N2,512 require an external reconstruction filter on its DAC outputs?
No, the UDA1344TS/N2,512 does not require an external reconstruction filter. Its Filter Stream DAC (FSDAC) architecture integrates inherent filtering, and the datasheet explicitly states "no post filter required" for the VOUTL/VOUTR outputs. The DAC output is specified at 900 mV (RMS) into 5 kΩ and exhibits −90 dB THD+N at 0 dBFS without external components.
Can the UDA1344TS/N2,512 operate with a 1.8 V digital supply?
No, the UDA1344TS/N2,512 cannot operate with a 1.8 V digital supply. All supply rails - VDDA(ADC), VDDA(DAC), VDDO, and VDDD - have a minimum rating of 2.7 V and maximum of 3.6 V. The datasheet specifies 3.0 V as the typical operating voltage, and operation below 2.7 V is outside absolute maximum ratings and not characterized.
How does the L3 interface of the UDA1344TS/N2,512 differ from standard I²C or SPI?
The L3 interface of the UDA1344TS/N2,512 is a proprietary 3-wire serial protocol (L3DATA, L3CLOCK, L3MODE) using LSB-first transmission. Unlike I²C or SPI, it has dedicated address mode (8-bit burst with device address 000101) followed by data mode, and supports only unidirectional writes to internal registers. It is not electrically or logically compatible with I²C or SPI peripherals.
Is the UDA1344TS/N2,512 pin-compatible with newer NXP audio codecs like the UDA1380?
No, the UDA1344TS/N2,512 is not pin-compatible with the UDA1380. The UDA1380 uses a 32-pin TSSOP package with different pin assignments, added features (e.g., headphone driver, enhanced power management), and incompatible register maps. Pin compatibility is explicitly limited to UDA1340M in L3 mode per the datasheet - no broader family compatibility is documented.
UDA1344TS/N2,512 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Stereo Audio
- Data Interface:
- Serial
- Resolution (Bits):
- 20 b
- Number of ADCs / DACs:
- 2 / 2
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 95 / 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
UDA1344TS/N2,512 FAQ
1.How can I place an order for UDA1344TS/N2,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for UDA1344TS/N2,512 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 UDA1344TS/N2,512 reliable?
The price and inventory of UDA1344TS/N2,512 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UDA1344TS/N2,512 is usually 5 days.
3.What payment methods are accepted for UDA1344TS/N2,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UDA1344TS/N2,512 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UDA1344TS/N2,512?
UDA1344TS/N2,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UDA1344TS/N2,512 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 UDA1344TS/N2,512?
For technical support, including UDA1344TS/N2,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UDA1344TS/N2,512 requirements.
6.How does Aetrix verify that UDA1344TS/N2,512 is sourced from the original manufacturer or authorized distributors?
All UDA1344TS/N2,512 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 UDA1344TS/N2,512 meets industry standards.
7.What is the process for return or replacement of UDA1344TS/N2,512?
All UDA1344TS/N2,512 units undergo pre-shipment inspection (PSI). If there is an issue with UDA1344TS/N2,512, 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 UDA1344TS/N2,512 part is unused and in its original packaging.
Return procedure for UDA1344TS/N2,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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