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Texas Instruments DP83822IRHBT
- Part No.:
- DP83822IRHBT
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
DP83822IRHBT.pdf
- Description:
- IC INTERFACE SPECIALIZED 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,651
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Product details
Overview
DP83822IRHBT from Texas Instruments is a robust, low-power 10/100Mbps Ethernet physical layer transceiver designed for industrial environments. It supports IEEE 802.3u (100BASE-TX/10BASE-Te), operates from –40°C to 125°C, delivers <120mW at 1.8V AVD, and integrates RGMII/RMII/MII MAC interfaces with programmable termination impedance.
For engineers reviewing the DP83822IRHBT datasheet, DP83822IRHBT pinout, DP83822IRHBT application, or DP83822IRHBT equivalent, this device is selected for real-time industrial Ethernet systems requiring ESD-hardened PHYs, energy-efficient Ethernet (EEE), Wake-on-LAN, and cable diagnostics in motor drives, factory automation, and Profinet® implementations.
Technical Context
The DP83822IRHBT implements a fully integrated PMD supporting auto-configured 10BASE-Te, 100BASE-TX, and 100BASE-FX signaling over differential TD_P/TD_M and RD_P/RD_M pairs. Its analog front-end includes adaptive equalization, echo cancellation, and jitter-tolerant clock recovery for reliable operation on unshielded twisted-pair or fiber media.
It features a flexible MAC interface engine supporting MII, RMII, and RGMII with independent clock domain handling, programmable I/O voltage (1.8V/2.5V/3.3V), and hardware-strapped or register-configurable mode selection. Internal diagnostic tools include time-domain reflectometry-based cable diagnostics and built-in self-test (BIST) with rapid link-down detection under 10ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 10/100Mbps - Full-duplex operation compliant with IEEE 802.3u for both 10BASE-Te and 100BASE-TX/FX physical layers. |
| Operating Temperature | –40°C to 125°C - Qualified for extended industrial ambient range; enables deployment in motor drives and grid infrastructure without derating. |
| Power Consumption | <120mW at 1.8V AVD - Enables single-supply, low-thermal-footprint designs in space-constrained industrial controllers. |
| ESD Robustness | ±8kV contact discharge (IEC 61000-4-2) - Eliminates need for external TVS diodes on MDI pins in harsh factory environments. |
| MAC Interface | RGMII/RMII/MII - Supports direct connection to ARM Cortex-M7/M4 or FPGA MACs without glue logic; RGMII skew compensation reduces PCB routing complexity. |
| Emissions Compliance | CISPR 22 Class B conducted & radiated - Meets stringent EMC requirements for building automation and medical-grade equipment without additional shielding. |
| Diagnostic Capability | Built-in cable diagnostics - Detects open/short faults up to 150m on UTP cabling, enabling predictive maintenance in robotics and motion control systems. |
Pinout & Package
The DP83822IRHBT is housed in a 32-pin 5.00mm × 5.00mm VQFN (RHB) package with exposed thermal pad, optimized for high-density industrial PCB layouts and efficient heat dissipation in sealed enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TD_P / TD_M | Differential Transmit Output | Drives 100BASE-TX or 100BASE-FX signals; supports auto-negotiated or forced mode; ±1.0Vpk-pk swing configurable via register 0x0403. |
| RD_P / RD_M | Differential Receive Input | Accepts 100BASE-TX/FX inputs; supports 0.22–1.8Vpk-pk differential swing; integrated receiver equalization compensates for channel loss. |
| TX_CLK / RX_CLK | MII Clock Interface | Provides 25MHz (100Mbps) or 2.5MHz (10Mbps) reference clocks; TX_CLK is output during reset, then input in RGMII mode post-initialization. |
| TX_EN / TX_D[3:0] / RX_DV / RX_D[3:0] | MII Data Control & Bus | Standard 4-bit nibble interface; supports full-duplex timing with setup/hold margins verified per IEEE 802.3u; GPIO multiplexing available on RX_D3/COL/LED_1 pins. |
| MDC / MDIO | Serial Management Interface | 25MHz max SMI bus; bidirectional MDIO with internal 2.2kΩ pullup; supports IEEE 802.3 Clause 22 register access for configuration and status monitoring. |
| INT / PWDN_N | Interrupt / Power-Down Control | Open-drain output with weak internal pullup; default function is active-low power-down; configurable as interrupt sink for link change, WoL, or error events. |
| RBIAS | Analog Bias Reference | Requires external 4.87kΩ ±1% resistor to GND; sets internal current references for PMD biasing and ADC calibration across temperature. |
Key Features
| Feature | Design Value |
|---|---|
| Energy Efficient Ethernet (EEE) | IEEE 802.3az-compliant low-power idle mode reduces dynamic power by >50% during packet gaps without MAC layer changes. |
| Wake-on-LAN (WoL) | Detects magic packets while in low-power state; wakes system via INT assertion without external wake circuitry or host polling. |
| Auto-MDIX in Forced Modes | Eliminates need for crossover cables or manual port configuration when operating outside auto-negotiation - critical for deterministic Profinet® RT communication. |
| Start-of-Frame Detect for IEEE 1588 | Hardware timestamp trigger aligned to packet boundary with sub-microsecond latency; enables precise time synchronization in industrial TSN networks. |
| Programmable Termination Impedance | Adjusts MII/RMII/RGMII I/O termination from 40Ω to 70Ω via registers; compensates for PCB trace impedance variation and improves signal integrity. |
Applications
| Motor Drives | Factory Automation |
|---|---|
Use Scenario: High-voltage variable-frequency drives communicating over EtherCAT or POWERLINK in electrically noisy cabinet environments. IC Role / Device Role / Timing Role: PHY layer interface between drive controller SoC and industrial Ethernet backbone; provides ESD-hardened 100BASE-TX signaling and rapid link recovery after EMI-induced disconnects. Use Value: ±8kV IEC 61000-4-2 contact discharge rating prevents latch-up during arc-flash events; fast link-down detection (<10ms) maintains motion control loop integrity. |
Use Scenario: PLC-to-I/O module communication in modular assembly lines with frequent reconfiguration and long cable runs. IC Role / Device Role / Timing Role: Physical layer transceiver bridging FPGA-based MAC to RJ-45 magnetics; supports RGMII with integrated skew compensation for timing-critical deterministic protocols. Use Value: Cable diagnostics identify intermittent opens/shorts before failure; programmable energy saving modes reduce thermal load in densely packed control cabinets. |
| Grid Infrastructure | Real-Time Industrial Ethernet |
Use Scenario: Substation RTUs and intelligent electronic devices (IEDs) deployed outdoors with wide ambient temperature swings and lightning-induced surges. IC Role / Device Role / Timing Role: Robust Ethernet PHY interfacing to fiber-optic or copper media; supports 100BASE-FX for noise-immune backhaul and 100BASE-TX for local HMI connections. Use Value: –40°C to 125°C operating range ensures reliability without external heating/cooling; CISPR 22 Class B compliance meets utility EMC mandates. |
Use Scenario: Profinet® IRT nodes requiring sub-100μs cycle times and guaranteed jitter performance in synchronized motion control networks. IC Role / Device Role / Timing Role: Low-latency PHY providing IEEE 1588 start-of-frame detect and deterministic transmit/receive timing; supports RGMII with <500ps data-to-clock skew. Use Value: Hardware timestamp trigger enables nanosecond-accurate synchronization; EEE mode reduces power during idle cycles without affecting real-time scheduling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10/100Mbps Ethernet PHY applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DP83822H | No 100BASE-FX support; same 32-pin VQFN package and –40°C to 125°C rating. | Suitable for copper-only deployments where fiber uplink is unnecessary. | Select DP83822H when 100BASE-FX capability is not required and cost optimization is prioritized. |
| TLK106L | Lower ESD rating (±4kV HBM vs. ±8kV IEC); no EEE or cable diagnostics; 48-pin HTQFP package. | Limited to less demanding industrial settings; lacks diagnostic and power-saving features essential for predictive maintenance. | Choose TLK106L only for legacy designs where footprint compatibility with older TI PHYs is mandatory and robustness requirements are relaxed. |
Compared with DP83822H and TLK106L, the DP83822IRHBT delivers superior electromagnetic resilience, integrated diagnostics, and energy efficiency - making it the preferred choice for new industrial Ethernet node designs requiring field-proven ruggedness and future-proof feature set.
Availability
DP83822IRHBT is available at Aetrix Electronics and suitable for motor drives, factory automation systems, and grid infrastructure equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DP83822IRHBT 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 leader specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The DP83822IRHBT belongs to TI's industrial Ethernet PHY product line, engineered specifically for harsh environments requiring extended temperature operation, high EMC immunity, and deterministic real-time performance in Profinet®, EtherCAT, and POWERLINK systems.
FAQ
What is the operating temperature range of the DP83822IRHBT?
The DP83822IRHBT is rated for –40°C to 125°C ambient operation, validated per JEDEC JESD22-A104. This extended range enables deployment in motor drive cabinets, outdoor substations, and sealed industrial enclosures without thermal derating. The DP83822IRHBT maintains full IEEE 802.3u compliance and diagnostic functionality across this entire range.
Does the DP83822IRHBT support 100BASE-FX fiber optic interface?
Yes, the DP83822IRHBT supports 100BASE-FX operation via its differential RD_P/RD_M and TD_P/TD_M pins. It delivers 0.9–1.1Vpk-pk differential output swing and accepts 0.22–1.8Vpk-pk input swing with <1.4ns total jitter tolerance. Fiber mode is enabled through register configuration and requires external optical transceiver coupling.
How does the DP83822IRHBT implement Energy Efficient Ethernet (EEE)?
The DP83822IRHBT complies with IEEE 802.3az by entering low-power idle (LPI) mode during packet inter-arrival gaps. It asserts LPI signaling to the MAC via the TX_ER line and reduces analog front-end power consumption by >50%. The DP83822IRHBT exits LPI within 2μs upon detecting valid preamble, preserving real-time determinism in industrial protocols.
Can the DP83822IRHBT be used with RGMII interface at 10Mbps?
Yes, the DP83822IRHBT supports RGMII at both 10Mbps and 100Mbps. At 10Mbps, the RGMII clock must be 2.5MHz ±100ppm; timing parameters including SetupR (1–2ns) and HoldR (1–2ns) are specified in Section 6.16 of the datasheet. The DP83822IRHBT automatically adapts skew compensation and drive strength for both speeds.
What diagnostic capabilities does the DP83822IRHBT provide?
The DP83822IRHBT includes time-domain reflectometry (TDR)-based cable diagnostics to locate opens, shorts, and impedance mismatches up to 150m on UTP cabling. It also offers built-in self-test (BIST), digital loopback, and rapid link-down detection (<10ms). These functions are accessible via MDIO register reads and require no external test equipment - critical for field-deployed motor drives and robotics.
DP83822IRHBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Ethernet
- Interface:
- MII, RMII
- Voltage - Supply:
- 1.71V ~ 3.45V
- Supplier Device Package:
- 32-VQFN (5x5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
DP83822IRHBT FAQ
1.How can I place an order for DP83822IRHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for DP83822IRHBT 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 DP83822IRHBT reliable?
The price and inventory of DP83822IRHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DP83822IRHBT is usually 5 days.
3.What payment methods are accepted for DP83822IRHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DP83822IRHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DP83822IRHBT?
DP83822IRHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DP83822IRHBT 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 DP83822IRHBT?
For technical support, including DP83822IRHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DP83822IRHBT requirements.
6.How does Aetrix verify that DP83822IRHBT is sourced from the original manufacturer or authorized distributors?
All DP83822IRHBT 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 DP83822IRHBT meets industry standards.
7.What is the process for return or replacement of DP83822IRHBT?
All DP83822IRHBT units undergo pre-shipment inspection (PSI). If there is an issue with DP83822IRHBT, 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 DP83822IRHBT part is unused and in its original packaging.
Return procedure for DP83822IRHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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