NXP Semiconductors SGTL5000XNAA3R2

Overview

SGTL5000XNAA3R2 from NXP Semiconductors is a low-power stereo audio codec with integrated capless headphone amplifier, supporting stereo LINEIN, MIC_IN, LINEOUT, and I2S digital interface. It delivers 100 dB SNR (DAC→HP), -80 dB THD+N (16 Ω load), and programmable MIC gain (0/20/30/40 dB) for portable media players, navigation devices, and smart handhelds.

For engineers reviewing the SGTL5000XNAA3R2 datasheet, SGTL5000XNAA3R2 pinout, SGTL5000XNAA3R2 application, or SGTL5000XNAA3R2 equivalent, key selection factors include its 32-pin QFN package, dual I²C/SPI control interface, PLL-based clock flexibility (8–27 MHz SYS_MCLK), and analog bypass mode enabling ultra-low-power line-to-headphone pass-through.

Technical Context

The SGTL5000XNAA3R2 integrates a 24-bit stereo ADC (85–90 dB SNR) and DAC (95–100 dB SNR), configurable digital audio processing (NXP Surround, Bass Enhancement, parametric EQ), and independent volume controls: DAC (-90 to 0 dB), headphone (-52 to +12 dB), and LINEOUT (gain-adjustable). Its analog signal path supports direct line-in-to-headphone bypass without ADC/DAC involvement.

It operates from 1.62–3.6 V supplies (VDDA, VDDIO, and mandatory external VDDD), uses an internal PLL to synthesize audio clocks from non-standard SYS_MCLK inputs (e.g., 12 MHz USB clock), and supports sampling rates from 8 kHz to 96 kHz across I²S, left/right-justified, and PCM formats.

Key Specifications

Pinout & Package

SGTL5000XNAA3R2 is housed in a 32-pin, 5 mm × 5 mm, 0.5 mm pitch punch-formed QFN package with exposed thermal pad. Pin functions are validated per NXP datasheet Rev. 7 (Jan 2022), Figure 3 and Table 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar stereo audio codec applications.

Compared with AK4458VN and CS42L52-CNZ, the SGTL5000XNAA3R2 uniquely combines full-duplex audio conversion, capless headphone drive, and integrated NXP audio processing in a single 32-pin QFN - making it optimal for portable systems requiring both voice interaction and rich playback within strict size and power budgets.

Availability

SGTL5000XNAA3R2 is available at Aetrix Electronics and suitable for portable media players, automotive navigation systems, fitness trackers, and medical vital sign monitors requiring stable component supply and long-term design continuity.

Supply support for SGTL5000XNAA3R2 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 IoT applications, with deep expertise in mixed-signal audio and power-efficient SoC design.

The SGTL5000XNAA3R2 belongs to NXP's low-power audio codec product line, engineered specifically for battery-operated portable electronics demanding high-fidelity audio, minimal footprint, and system-level BOM reduction through integrated features like capless HP amps and PLL-based clocking.

FAQ

What is the operating temperature range for the SGTL5000XNAA3R2?

The SGTL5000XNAA3R2 is rated for operation from -40°C to +85°C ambient temperature, meeting industrial-grade requirements for automotive navigation systems, ruggedized medical devices, and outdoor portable electronics. This range is confirmed in the "Recommended Operating Conditions" table (Table 3) of the NXP datasheet Rev. 7.

Does the SGTL5000XNAA3R2 support both I²C and SPI control interfaces?

Yes, the SGTL5000XNAA3R2 supports both I²C and SPI control modes. The CTRL_MODE pin selects the interface: logic LOW configures I²C (using CTRL_CLK as SCL and CTRL_DATA as SDA), while logic HIGH enables SPI (with CTRL_ADR0_CS as chip select). This dual-mode flexibility allows seamless integration with diverse host processors without hardware redesign.

What is the purpose of the HP_VGND pin on the SGTL5000XNAA3R2?

The HP_VGND pin on the SGTL5000XNAA3R2 provides a virtual ground reference for the capless headphone amplifier outputs. It must never be connected to system ground - instead, it requires the widest, shortest possible PCB trace to maintain stability. This design eliminates external DC-blocking capacitors while ensuring proper biasing of the HP_R and HP_L outputs.

Can the SGTL5000XNAA3R2 operate without an external crystal or oscillator?

Yes, the SGTL5000XNAA3R2 can operate without an external crystal or oscillator thanks to its integrated PLL. It accepts a single 8–27 MHz SYS_MCLK input (e.g., a 12 MHz USB clock) and internally generates all required audio clocks (e.g., 44.1 kHz, 48 kHz). This eliminates the need for dedicated audio crystals, reducing BOM cost and board space.

What is the maximum headphone output power of the SGTL5000XNAA3R2?

The SGTL5000XNAA3R2 delivers up to 58 mW per channel into a 16 Ω load when VDDA = 3.3 V, as specified in Table 4 ("Input/Output Electrical Characteristics") of the NXP datasheet. At 1.8 V VDDA, output power drops to 17 mW - allowing designers to trade voltage for power efficiency in battery-critical applications.