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Texas Instruments TAS5086DBTR
- Part No.:
- TAS5086DBTR
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 38-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
TAS5086DBTR.pdf
- Description:
- IC MODULATOR 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,924
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Product details
Overview
TAS5086DBTR from Texas Instruments is a six-channel digital pulse-width modulator (PWM) IC designed for high-fidelity audio systems. It accepts 16-/20-/24-bit I2S, left-justified, or right-justified serial audio inputs at sampling rates from 32 kHz to 192 kHz, performs 8× oversampling with fourth-order noise shaping, delivers ≥105-dB dynamic range and THD < 0.06%, and drives six PWM output channels for single-ended or bridge-tied load configurations in home theater and AV receiver applications.
For engineers reviewing the TAS5086DBTR datasheet, TAS5086DBTR pinout, TAS5086DBTR application, or TAS5086DBTR equivalent, key selection considerations include its 38-pin TSSOP package, I2C slave control interface operating up to 400 kHz, 3.3-V-only digital supply with 5-V-tolerant control inputs, integrated bass management with dual biquads in channel 6, and AM interference avoidance capability via adjustable PWM clock modulation.
Technical Context
The TAS5086DBTR implements a fourth-order delta-sigma noise shaper with 8× oversampling at 44.1/48 kHz and supports 12×, 4×, and 2× oversampling at other rates up to 192 kHz. Its PLL locks to MCLK frequencies of 128–512 fS (max 50 MHz) or uses an internal oscillator when MCLK is unstable.
It operates as a strict clock slave-accepting MCLK, SCLK, and LRCLK from external sources-and features fully programmable input routing, per-channel volume control (24 dB to –100 dB), DC blocking filters, and digital de-emphasis for 32/44.1/48 kHz. The device includes dedicated subwoofer processing with two programmable biquad filters and supports 1N+1 PWM signaling for direct interfacing with TI's TAS5186, TAS5142, and TAS511x power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Six independent PWM audio output channels with full input/output mapping flexibility |
| Sampling Rates | 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz - auto-detected or manually configured |
| Oversampling | 12× at 32 kHz; 8× at 44.1/48 kHz; 4× at 88.2/96 kHz; 2× at 176.4/192 kHz |
| Dynamic Range | ≥105 dB (20 Hz–20 kHz, measured with TAS5186 power stage) |
| THD+N | <0.06% (measured at TAS5086DBTR PWM outputs, not speaker terminals) |
| Supply Voltage | DVDD = AVDD = 3.0–3.6 V; 5-V-tolerant on RESET, PDN, MUTE, SCLK, LRCLK, MCLK, SDA, SCL |
| Control Interface | I2C slave supporting standard (100 kHz) and fast-mode (400 kHz) operation without MCLK dependency |
Pinout & Package
Package: 38-pin TSSOP (DBT), 0.65-mm pitch, RoHS-compliant, thermal pad exposed on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM_1 to PWM_6 (pins 33–38) | PWM audio output drivers | Direct six-channel PWM outputs compatible with 1N+1 signaling for SE/BTL power stages |
| SDIN1–SDIN4 (pins 23–26) | Serial audio data inputs | Four independent stereo-capable inputs supporting I2S/left/right-justified formats at up to 192 kHz |
| SDOUT (pin 22) | I2S serial audio output | Fixed 24-bit I2S pass-through or downmix output synchronized to SCLK/LRCLK; no register control |
| MCLK, SCLK, LRCLK (pins 8, 20, 19) | Audio clock inputs | Slave-mode timing interface: MCLK up to 50 MHz; SCLK = 64-fS or 48-fS; LRCLK = 1-fS |
| SDA, SCL (pins 17, 18) | I2C control interface | Fast-mode (400 kHz) I2C bus with weak pullups/pulldowns; functional even without MCLK |
| PDN, RESET, MUTE (pins 10, 9, 16) | System control inputs | 5-V-tolerant active-low controls: soft power-down (100-ms recovery), async reset, and noiseless mute ramp |
| VALID1, VALID2 (pins 31, 32) | Output validity status | Active-high signals indicating soft-start completion (VALID1) and stable PWM output readiness (VALID2) |
Key Features
| Feature | Design Value |
|---|---|
| AM Interference Avoidance | Adjusts PWM clock rate to 7-fS/8-fS/9-fS to eliminate audible AM radio band artifacts during playback |
| Click- and Popless Start/Stop | Optimized PWM sequence ensures zero-output transitions during power-up, mute, and shutdown |
| Subwoofer Channel Processing | Two programmable biquad filters + bass management mixer in channel 6 for custom low-frequency response |
| AC-Coupling Capacitor Charging | Specialized PWM sequence pre-charges coupling caps in single-ended configurations to prevent thumps |
| Flexible Input Mapping | Any SDIN channel can be routed to any PWM output channel via register-controlled multiplexers |
| Downmix Capability | Hardware-accelerated 5.1-to-2.1 or 5.1-to-3.1 downmix with selectable output routing to front/center/sub channels |
Applications
| Home Theater AV Receivers | Multi-Zone Audio Distribution Systems |
|---|---|
Use Scenario: Six-channel discrete audio decoding and amplification in 5.1 surround sound receivers with HDMI/SPDIF inputs. IC Role / Device Role / Timing Role: Digital PWM processor handling sample-rate conversion, volume control, bass management, and six-channel PWM generation synchronized to system master clock. Use Value: Enables compact, high-efficiency Class-D amplifier designs with ≥105-dB SNR and THD < 0.06% without external DSP or clock generators. |
Use Scenario: Centralized audio source feeding multiple rooms with independent volume and EQ control. IC Role / Device Role / Timing Role: Six-channel PWM modulator accepting four independent audio streams and routing subsets to designated zones via programmable channel mapping. Use Value: Supports simultaneous playback of different content across zones using SDIN1–SDIN4 inputs and flexible output assignment without external multiplexing logic. |
| Automotive Infotainment Head Units | High-End Soundbars with Subwoofer Output |
Use Scenario: Compact 5.1-channel audio processing in space-constrained automotive head units with CAN/I2C host control. IC Role / Device Role / Timing Role: I2C-configurable PWM engine accepting 48-kHz I2S from SoC, applying channel-specific volume and DC blocking, and driving six Class-D amplifier channels. Use Value: Delivers automotive-grade audio performance with AM interference avoidance mode to maintain clear AM radio reception during playback. |
Use Scenario: Two-channel stereo soundbar augmented with discrete LFE output for external subwoofer connection. IC Role / Device Role / Timing Role: Six-channel PWM processor using SDIN1–SDIN3 for main stereo + center + surround, SDIN4 for LFE feed, and channel-6 biquads for optimized subwoofer crossover. Use Value: Integrates bass management, de-emphasis, and subwoofer-specific filtering into single IC-eliminating need for external analog filters or DSP. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar six-channel digital PWM processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS5086PAPR | 64-pin HTQFP package; identical electrical specs and register map; higher thermal dissipation rating (1.2 W vs. 0.82 W) | Better suited for high-power, thermally constrained designs requiring PCB heat spreading or forced airflow | Select TAS5086PAPR when board layout allows larger footprint and thermal management supports higher junction temperature |
| TAS5086DBT | Same 38-pin TSSOP package as TAS5086DBTR but without tape-and-reel packaging; identical pinout, timing, and functionality | Intended for prototyping, small-batch builds, or manual assembly where reel packaging is unnecessary | Choose TAS5086DBT for evaluation or low-volume production where tape-and-reel handling is not required |
Compared with TAS5086DBTR, TAS5086PAPR offers superior thermal performance in high-power applications, while TAS5086DBT provides identical functionality in non-reel form-neither is pin-compatible with non-TI alternatives due to proprietary PWM signaling and register architecture.
Availability
TAS5086DBTR is available at Aetrix Electronics and suitable for home theater receivers, multi-zone audio systems, automotive infotainment head units, and premium soundbars requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TAS5086DBTR 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
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog, embedded processing, and digital signal processing technologies for industrial, automotive, and consumer applications.
The TAS5086DBTR belongs to TI's PurePath Digital™ audio processor family, engineered specifically for high-efficiency, low-noise Class-D amplifier systems requiring integrated PWM modulation, flexible channel routing, and advanced audio processing without external DSP.
FAQ
What is the maximum sampling rate supported by the TAS5086DBTR?
The TAS5086DBTR supports sampling rates up to 192 kHz. It accepts 32-, 44.1-, 48-, 88.2-, 96-, 176.4-, and 192-kHz input data with automatic detection or manual configuration via I2C registers. At 192 kHz, it operates with 2× oversampling and fourth-order noise shaping to maintain ≥105-dB dynamic range across the 20 Hz–20 kHz band. The TAS5086DBTR requires MCLK at 512 fS (i.e., 98.304 MHz) for 192-kHz operation.
Does the TAS5086DBTR require an external crystal or oscillator?
No, the TAS5086DBTR does not require an external crystal or oscillator. It contains an internal oscillator used for initial I2C communication, automatic sample-rate detection, and MCLK error monitoring. When MCLK is present and stable, the device locks its PLL to that reference; if MCLK becomes unstable or absent, the internal oscillator maintains basic I2C functionality and clock fallback. An external OSC_RES resistor (pin 14) is required to trim oscillator frequency accuracy.
Can the TAS5086DBTR drive both single-ended and bridge-tied load amplifiers?
Yes, the TAS5086DBTR is explicitly designed to drive both single-ended (SE) and bridge-tied load (BTL) Class-D power stages. Its six PWM outputs support 1N+1 signaling and are compatible with TI's TAS5186 (BTL/SE), TAS5142 (BTL/SE), and TAS511x (SE/BTL with minimal external logic). The IC includes optimized PWM sequences for charging AC-coupling capacitors in SE configurations and click/pop suppression for both topologies.
How does the AM interference avoidance feature work in the TAS5086DBTR?
The TAS5086DBTR's AM interference avoidance system dynamically adjusts the PWM switching frequency away from the AM broadcast band (530–1710 kHz) by selecting 7-fS, 8-fS, or 9-fS modulation rates-instead of the default 8× or 4× oversampling-while maintaining audio fidelity. This requires manual sample-rate configuration and disables automatic detection. The feature is activated via I2C register control and is particularly effective in automotive environments where AM radio reception must remain clear during audio playback.
Is the TAS5086DBTR pin-compatible with other devices in the TAS5086 family?
Yes, the TAS5086DBTR is pin-compatible with the TAS5086DBT (same 38-pin TSSOP package, differing only in packaging format) and shares identical pin functions, electrical characteristics, and register mapping with the TAS5086PAPR (64-pin HTQFP). All three variants use the same PCB footprint for DBT/DBTR and require no layout changes when substituting within the same package family. However, TAS5086DBTR is not pin-compatible with non-TI PWM processors due to proprietary signal timing and interface requirements.
TAS5086DBTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- PurePath Digital™
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Modulator
- Applications:
- Digital Audio Interfacing
- Number of Channels:
- 6
- Interface:
- I2C, I2S
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Specifications:
- 32kHz ~ 192kHz
- Mounting Type:
- Surface Mount
- Grade:
- -
TAS5086DBTR FAQ
1.How can I place an order for TAS5086DBTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TAS5086DBTR 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 TAS5086DBTR reliable?
The price and inventory of TAS5086DBTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TAS5086DBTR is usually 5 days.
3.What payment methods are accepted for TAS5086DBTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TAS5086DBTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TAS5086DBTR?
TAS5086DBTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TAS5086DBTR 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 TAS5086DBTR?
For technical support, including TAS5086DBTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TAS5086DBTR requirements.
6.How does Aetrix verify that TAS5086DBTR is sourced from the original manufacturer or authorized distributors?
All TAS5086DBTR 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 TAS5086DBTR meets industry standards.
7.What is the process for return or replacement of TAS5086DBTR?
All TAS5086DBTR units undergo pre-shipment inspection (PSI). If there is an issue with TAS5086DBTR, 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 TAS5086DBTR part is unused and in its original packaging.
Return procedure for TAS5086DBTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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