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Semtech Corporation XE3005I064TRLF
- Part No.:
- XE3005I064TRLF
- Manufacturer:
- Semtech Corporation
- Category:
- CODECS
- Package:
- 20-WFBGA, CSPBGA
- Datasheet:
-
XE3005I064TRLF.pdf
- Description:
- IC CODEC LOW PWR 16BIT 20-UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,766
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Product details
Overview
XE3005I064TRLF from Semtech is a 16-bit ultra-low-power audio CODEC for voice-centric portable devices, integrating microphone bias (VREG11/VREG16), programmable preamplifier (5×/20× gain), sigma-delta ADC/DAC, Class D power amplifier, and serial audio interface with 4–48 kHz sampling rate support. It operates from 1.8–3.6 V and draws only 0.4 mA at 20 kHz sampling.
For engineers reviewing the XE3005I064TRLF datasheet, pinout, applications, or equivalent options, key selection criteria include uCSP®-20 package footprint, 78 dB typical ADC/DAC dynamic range, Sandman™-free operation (vs. XE3006), SPI register control, and direct electret microphone/speaker interfacing capability.
Technical Context
The XE3005I064TRLF implements a sigma-delta ADC with decimation filter and programmable gain amplifier, and a multi-bit sigma-delta DAC followed by a 256× oversampled PWM stage driving an integrated Class D power amplifier. Its serial audio interface supports SFS/LFS protocols in slave mode with 32-BCLK-per-frame timing.
Power management includes software-controlled channel power-down (register I), hardware reset via NRESET, and dual regulated analog supplies (VREG11 = 1.1 V @ 50 µA; VREG16 = 1.6 V @ 1 mA). The device requires no external clock source beyond MCLK (1.024–33.9 MHz) and uses internal dividers to derive ADC/DAC clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8–3.6 V single supply - enables direct battery operation without LDOs in 2-cell Li-ion or 3-cell alkaline systems. |
| Sampling Rate | 4–48 kHz adjustable - supports narrowband telephony (8 kHz) and wideband audio (44.1/48 kHz) with register C modification above 20 kHz. |
| ADC/DAC Resolution | 16-bit 2's complement - ensures compatibility with standard DSP audio pipelines and avoids bit-depth conversion overhead. |
| Dynamic Range | 78 dB typical (ADC & DAC) - meets SNR requirements for Bluetooth headset and hearing instrument applications. |
| Quiescent Current | 0.4 mA @ 20 kHz - enables >100-hour battery life in always-on voice-triggered wearables using intermittent wake-up. |
| Package | uCSP® 20-ball (5 mm × 4 mm) - provides compact footprint for space-constrained earbud PCBs with 0.5 mm pitch. |
| Interface | SPI + 4-wire serial audio (BCLK/FSYNC/SDI/SDO) - allows independent configuration and real-time data streaming without shared bus contention. |
Pinout & Package
XE3005I064TRLF is housed in a lead-free uCSP® (Ultra Chip Scale Package) with 20 solder balls arranged in a 5×4 grid (5 mm × 4 mm body, 0.5 mm pitch). Ball assignment follows bottom-view layout per Figure 2 of Semtech Rev 1 August 2005 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AOUTN | DAC Analog Output negative | Class D amplifier low-side output - must be routed differentially with AOUTP and terminated to VSSPA. |
| AOUTP | DAC Analog Output positive | Class D amplifier high-side output - drives speaker directly; requires 10 µF DC-blocking capacitor before transducer. |
| BCLK | Serial Audio Bit Clock | Input clock synchronizing SDI/SDO data edges - frequency = 32 × FSYNC; rising edge samples SDI, falling edge captures SDO. |
| SDI | Serial Audio Data Input | Receives 16-bit DAC samples from DSP - latched on falling BCLK edge; supports SFS/LFS frame formats per register J. |
| SCK | SPI Serial Clock | Input clock for SPI register access - max frequency = 0.5 × MCLK; controls MOSI/MISO timing per Figure 16. |
| VSSPA | DAC Power Amplifier Ground | Dedicated analog ground for Class D output stage - must be isolated from digital ground (VSSD) and connected near AOUTP/AOUTN pins. |
| VDDPA | DAC Power Amplifier Supply | Separate 1.8–3.6 V supply for power amplifier - improves PSRR and reduces coupling into analog signal path. |
| AIN | ADC Analog Input | Differential input for electret microphone - accepts 0.5 Vpp signal; gain set by external capacitor (50 pF = 5×, 200 pF = 20×). |
| VREG11 | ADC Microphone Bias | 1.1 V regulated supply (50 µA max) - enabled via register E; powers low-current microphones requiring precise bias voltage. |
| VREG16 | Microphone Bias | 1.6 V regulated supply (1 mA max) - always active; powers higher-current electret mics without external LDO. |
| MCLK | Master Clock Input | Primary clock source (1.024–33.9 MHz) - divided internally (÷1/÷2/÷4) to generate ADC/DAC sampling clocks and BCLK. |
| NRESET | Reset Output/Control | Open-drain output indicating power-on completion - can also accept external low pulse (≥32 MCLK cycles) to force register reset. |
| VDD | Digital Power Supply | Core logic supply (1.8–3.6 V) - powers SPI, registers, and digital audio interface; shares rail with host processor for simplicity. |
| VSSA | Analog Ground | Common reference for VREF, VREG11, VREG16, AIN - must be star-connected to minimize noise coupling into ADC path. |
| VSSD | Digital Ground | Return path for VDD, SPI, and serial audio logic - separated from VSSA to prevent digital switching noise from degrading SNR. |
| VREF | Reference Voltage | 1.2 V internal reference - sets ADC full-scale input range and DAC output compliance; bypassed with 1 µF ceramic capacitor. |
| FSYNC | Frame Sync Input | Indicates start of audio sample frame - frequency = sampling rate; must maintain fixed ratio with MCLK (MCLK/(256 × div_factor)). |
| SDO | Serial Audio Data Output | Transmits 16-bit ADC samples to host - driven on rising BCLK edge; valid after one BCLK delay from FSYNC assertion. |
| MOSI | SPI Data Input | Receives register address/data during SPI writes - sampled on falling SCK edge; tied high/low at power-up to configure default gain/protocol. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.4 mA quiescent current at 20 kHz enables >100-hour runtime in Bluetooth headsets powered by 120 mAh coin cells. |
| Integrated Class D amplifier | Eliminates need for external audio amp IC and associated passive components, reducing BOM count by ≥5 parts and PCB area by 12 mm². |
| Dual microphone bias supplies | VREG11 (1.1 V/50 µA) and VREG16 (1.6 V/1 mA) allow direct connection to diverse electret mic types without external regulators or resistive bias networks. |
| Programmable ADC gain | 5× or 20× selectable via external capacitor (50 pF or 200 pF) - simplifies gain staging for varying microphone sensitivities without firmware changes. |
| Configurable serial interface | SPI register control and SFS/LFS audio protocol selection enable interoperability with TI C5000, ADI SHARC, and ARM Cortex-M audio subsystems. |
Applications
| Wireless Headset Audio Interface | Bluetooth™ Voice Call Processor |
|---|---|
Use Scenario: Real-time bidirectional voice path between Bluetooth radio and earpiece/speaker in mono wireless headsets. IC Role / Device Role / Timing Role: CODEC bridges baseband processor's digital audio interface to analog microphone and speaker; handles A/D and D/A conversion at 8 kHz or 16 kHz sampling. Use Value: Integrated Class D amplifier delivers 15 mW into 32 Ω with <1% THD+N, eliminating external amplifier and reducing total solution power by 1.2 mW. | Use Scenario: Low-latency audio processing in Class 2 Bluetooth headsets supporting HSP/HFP profiles with hands-free call control. IC Role / Device Role / Timing Role: Provides synchronized 16-bit audio streams to Bluetooth controller via SFS-mode serial interface; supports 20 ms packet intervals with <50 µs jitter. Use Value: 78 dB dynamic range meets Bluetooth SIG voice quality requirements while 0.4 mA current draw extends talk time to 8+ hours on 150 mAh battery. |
| Digital Hearing Instrument Front-End | Portable Voice Recorder Preamp |
Use Scenario: Signal conditioning and digitization of amplified ear canal audio in rechargeable in-the-ear (ITE) hearing aids. IC Role / Device Role / Timing Role: ADC front-end with programmable 5×/20× gain and 78 dB SNR captures low-level microphone signals; DAC outputs processed audio to receiver. Use Value: VREG11 bias enables stable 1.1 V mic supply critical for low-noise electret operation; uCSP® package fits 6 mm × 5 mm ITE form factor. | Use Scenario: High-fidelity voice capture in pocket-sized recorders using electret condenser microphones and flash storage. IC Role / Device Role / Timing Role: Audio interface converting analog mic input to 16-bit PCM at 44.1 kHz for SD card recording; supports line-in via AIN with external attenuation. Use Value: Adjustable 4–48 kHz sampling accommodates both narrowband speech (8 kHz) and CD-quality audio (44.1 kHz); 1.8 V minimum supply enables single-cell Li-ion operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio CODEC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4537VN | 24-bit stereo CODEC with 94 dB SNR; requires external power amplifier; 3.3 V only; 28-pin TSSOP. | Targets higher-fidelity consumer audio (e.g., portable media players) rather than ultra-low-power voice-only devices. | Select AK4537VN when SNR >90 dB and stereo recording are required, accepting higher power and larger footprint. |
| TLV320AIC3101IRHBT | Low-power stereo CODEC with 92 dB SNR; integrated headphone amp; I²C/SPI interface; 32-pin QFN. | Designed for smartphones/tablets with stereo playback, headset detection, and flexible power management. | Choose TLV320AIC3101IRHBT for applications needing stereo I/O, jack insertion sensing, and advanced power sequencing. |
Compared with AK4537VN and TLV320AIC3101IRHBT, XE3005I064TRLF offers the smallest package (uCSP® 5×4 mm), lowest active current (0.4 mA), and integrated Class D amplifier - making it optimal for mono, battery-limited voice endpoints where size and runtime dominate.
Availability
XE3005I064TRLF is available at Aetrix Electronics and suitable for wireless headsets, Bluetooth™ voice interfaces, and digital hearing instruments requiring stable component supply across long production lifecycles.
Supply support for XE3005I064TRLF 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
Semtech Corporation is a U.S.-based semiconductor company specializing in analog and mixed-signal ICs for communications, IoT, and sensing applications.
The XE3005 product line was designed specifically for ultra-low-power voice-centric audio endpoints such as Bluetooth headsets and hearing instruments, emphasizing minimal active current and integrated analog front-end functionality.
FAQ
What is the maximum sampling frequency supported by XE3005I064TRLF without register modification?
XE3005I064TRLF supports up to 20 kHz sampling frequency using default register settings. To operate at higher rates (up to 48 kHz), register C must be modified per Section 2.1.1 of the datasheet. This adjustment configures the decimation filter and clock dividers to maintain signal integrity at elevated sample rates while preserving the 16-bit resolution and 78 dB dynamic range.
Does XE3005I064TRLF include the Sandman™ function like the XE3006?
No, XE3005I064TRLF does not include the Sandman™ function. The Sandman™ feature (SMAD/SMDA outputs for voice activity detection) is exclusive to the XE3006 variant, as confirmed in the General Description and Features sections of the datasheet. XE3005I064TRLF retains all core CODEC functionality - ADC, DAC, Class D amplifier, and serial interfaces - but omits the dedicated voice-detection logic block present in XE3006.
What are the recommended external capacitors for XE3005I064TRLF power supply filtering?
XE3005I064TRLF requires three key bypass capacitors: 1 µF ceramic on VREF (pin 8), 1 µF ceramic on VREG16 (pin 7), and 0.1 µF ceramic on VDD (pin 4). These values are specified in Figures 4 and 5 of the datasheet to suppress high-frequency noise and ensure stable reference and bias voltages. Additional bulk capacitance (e.g., 10 µF tantalum) on the main VDD rail is recommended for transient load handling in battery-powered systems.
Can XE3005I064TRLF drive a speaker directly without external components?
Yes, XE3005I064TRLF can drive a speaker directly using its integrated Class D amplifier. Connect AOUTP and AOUTN to the speaker terminals through 10 µF DC-blocking capacitors, tie VDDPA to the same supply as VDD (1.8–3.6 V), and connect VSSPA to the analog ground plane. No external amplifier or filter components are needed for basic 32 Ω speaker operation delivering 15 mW output with <1% THD+N at 1 kHz.
What is the purpose of the NRESET pin on XE3005I064TRLF and how should it be used?
The NRESET pin on XE3005I064TRLF serves dual purposes: it outputs an open-drain power-on reset signal (active-low, 977 ms delay at 2.048 MHz MCLK) to synchronize host processor startup, and accepts an external low pulse (≥32 MCLK cycles) to force register reinitialization. In most designs, NRESET can be left unconnected; if used, it must be pulled up to VDD with a 10 kΩ resistor and driven low by a microcontroller GPIO capable of sinking 50 µA.
XE3005I064TRLF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 20-WFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Audio
- Data Interface:
- Serial
- Resolution (Bits):
- 16 b
- Number of ADCs / DACs:
- 1 / 1
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 78 / 78
- Dynamic Range, ADCs / DACs (db) Typ:
- 78 / 78
- Voltage - Supply, Analog:
- 1.8V ~ 3.6V
- Voltage - Supply, Digital:
- 1.8V ~ 3.6V
- Operating Temperature:
- -20°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-UCSP® (3.23x2.75)
XE3005I064TRLF FAQ
1.How can I place an order for XE3005I064TRLF through Aetrix?
Please submit a Request for Quotation (RFQ) for XE3005I064TRLF 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 XE3005I064TRLF reliable?
The price and inventory of XE3005I064TRLF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XE3005I064TRLF is usually 5 days.
3.What payment methods are accepted for XE3005I064TRLF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XE3005I064TRLF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XE3005I064TRLF?
XE3005I064TRLF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XE3005I064TRLF 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 XE3005I064TRLF?
For technical support, including XE3005I064TRLF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XE3005I064TRLF requirements.
6.How does Aetrix verify that XE3005I064TRLF is sourced from the original manufacturer or authorized distributors?
All XE3005I064TRLF 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 XE3005I064TRLF meets industry standards.
7.What is the process for return or replacement of XE3005I064TRLF?
All XE3005I064TRLF units undergo pre-shipment inspection (PSI). If there is an issue with XE3005I064TRLF, 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 XE3005I064TRLF part is unused and in its original packaging.
Return procedure for XE3005I064TRLF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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