DP83822IFRHBT - 10/100 Ethernet PHY Transceiver | TI
MPN: DP83822IFRHBT ✓ Hoạt độngDP83822IFRHBT Tóm tắt
An Ethernet PHY (Physical Layer transceiver) is a mixed-signal IC that connects a Media Access Controller (MAC) to the physical copper or fiber medium. It performs 10BASE-T/100BASE-TX encoding/decoding, line driving, link training, and cable diagnostics. The DP83822 family belongs to the Ethernet transceiver category in the broader hierarchy of networking ICs > interface ICs > semiconductors.
Key features include a wide operating temperature range of -40C to +85C, 50-MHz clock output, Energy Efficient Ethernet (EEE) support per IEEE 802.3az, built-in cable diagnostics, and integrated termination resistors. The 16-kV HBM ESD rating exceeds typical industrial requirements and reduces external protection component count.
Architecturally, the DP83822I integrates the analog front-end, DSP-based adaptive equalizer, baseline wander correction, and a digital PLL, all controlled via the MDIO management interface. Multiple operating modes (MII, RMII, RGMII) make it compatible with virtually any modern Ethernet MAC, including those in Sitara processors, microcontrollers, and FPGAs.
Typical applications include industrial Ethernet sensors, factory automation controllers, motor drives with Ethernet connectivity, building automation gateways, and fiber-to-the-node industrial links. The fiber support enables operation over longer distances and in electrically noisy environments where copper Ethernet is impractical.
When designing with the DP83822IFRHBT, ensure the magnetics module is properly matched to the PHY and that the MDIO clock does not exceed 25 MHz. The 50-MHz clock output can drive a companion MAC or be disabled to save power in cost-optimized designs.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes beyond the manufacturer datasheet, with verified data as of 2026-10-16.
Bộ thay thế dễ dàng lắp đặt cho DP83822IFRHBT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DP83822IFRHBT (cùng hình factor và footprint) — khác nhau ở Package, MAC Interface, Product Type, Cable Diagnostics, Clock Output.
DP83822IFRHBR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DP83822HFRHBR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DP83822IRHBR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DP83822IFRHBT Thông số kỹ thuật
| Product Type | Ethernet PHY Transceiver |
| Tốc độ dữ liệu | 10/100 Mbps |
| Standards Supported | 10BASE-T, 100BASE-TX, 100BASE-FX |
| MAC Interface | MII, RMII, RGMII |
| Điện áp cung cấp | 3.3 V (single supply) |
| ESD Rating (HBM) | 16 kV |
| Hộp | 32-pin VQFN (RHB) 5x5 mm |
| Nhiệt độ hoạt động | -40C to +85C |
| Clock Output | 50 MHz |
| Fiber Support | Yes (100BASE-FX) |
| Energy Efficient Ethernet | IEEE 802.3az compliant |
| Cable Diagnostics | Built-in TDR-based |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân DP83822IFRHBT
| Chân 1 | TXD0 — Transmit Data Bit 0 (MII/RGMII) |
| Chân 2 | TXD1 — Transmit Data Bit 1 (MII/RGMII) |
| Chân 3 | TX_EN — Transmit Enable |
| Chân 4 | TX_CLK — Transmit Clock |
| Chân 5 | RX_CLK — Receive Clock |
| Chân 6 | RXD0 — Receive Data Bit 0 |
| Chân 7 | RXD1 — Receive Data Bit 1 |
| Chân 8 | RXD2 — Receive Data Bit 2 (MII/RGMII) |
| Chân 9 | RXD3 — Receive Data Bit 3 (MII/RGMII) |
| Chân 10 | RX_ER — Receive Error |
| Chân 11 | RX_DV — Receive Data Valid / CRS_DV |
| Chân 12 | MDIO — Management Data I/O |
| Chân 13 | MDC — Management Data Clock |
| Chân 14 | INT — Interrupt Output (active low) |
| Chân 15 | RESET — Hardware Reset (active low) |
| Chân 16 | XI — Crystal/Oscillator Input (25 MHz) |
| Chân 17 | XO — Crystal Output (25 MHz) |
| Chân 18 | CLK_OUT — 50-MHz Clock Output |
| Chân 19 | LED0 — Activity/Link LED Output 0 |
| Chân 20 | LED1 — Activity/Link LED Output 1 |
| Chân 21 | LED2 — Activity/Link LED Output 2 |
| Chân 22 | RXD_P — Differential Receive Data Positive (MDI) |
| Chân 23 | RXD_N — Differential Receive Data Negative (MDI) |
| Chân 24 | TXD_P — Differential Transmit Data Positive (MDI) |
| Chân 25 | TXD_N — Differential Transmit Data Negative (MDI) |
| Chân 26 | VDDIO — I/O Supply (3.3 V) |
| Chân 27 | VDD — Core Supply (3.3 V) |
| Chân 28 | GND — Ground |
| Chân 29 | TX_PWR — Transmit Power (bias for fiber mode) |
| Chân 30 | SD — Signal Detect (fiber mode) |
| Chân 31 | FX_SD — Fiber Signal Detect input |
| Chân 32 | EP — Exposed Thermal Pad (GND) |
Ứng dụng tiêu biểu
DP83822IFRHBT phù hợp cho 6 Áp dụngs: Industrial Ethernet Sensor Networks, Motor Drives with Ethernet Connectivity, Building Automation Gateways, Fiber-to-the-Node Industrial Links, Test & Measurement Instrumentation, Power Substation Communication (IEC 61850).
Industrial Ethernet Sensor Networks
The DP83822IFRHBT's 16-kV HBM ESD rating and -40C to +85C industrial temperature range make it ideal for factory-floor distributed I/O and sensor backbones. Its MII/RMII/RGMII flexibility lets it connect to virtually any industrial MCU or SoC. With built-in cable diagnostics, technicians can pinpoint cable faults (open, short, impedance mismatch) via TDR from a remote HMI, cutting commissioning time from hours to minutes. The integrated 50-MHz clock output eliminates an external oscillator, reducing BOM cost in dense sensor nodes.
Được đề xuất
Motor Drives with Ethernet Connectivity
Industrial servo drives and variable-frequency drives benefit from the DP83822IFRHBT's fiber (100BASE-FX) support for galvanic isolation between power and control sections. Fiber optic links eliminate ground loops in high-noise motor-drive installations and extend communication distance beyond the 100-m copper limit, enabling distributed drive cabinets across a factory floor. The robust 16-kV ESD protects against transients from the drive's power electronics, while RGMII enables high-speed deterministic communication with modern motor-control MCUs.
Được đề xuất
Building Automation Gateways
Building automation controllers (BACnet, KNX, Modbus TCP gateways) leverage the DP83822IFRHBT's low power consumption and EEE (Energy Efficient Ethernet) support per IEEE 802.3az. The EEE feature reduces PHY power by up to 80% during idle periods, important for always-on building controllers seeking energy-efficient certifications like Energy Star. The industrial temperature grade supports unheated equipment closets, and the wide MAC-interface compatibility allows reuse of the same PHY design across BACnet, KNX-IP, and proprietary building-automation gateways.
Được đề xuất
Fiber-to-the-Node Industrial Links
The DP83822IFRHBT's integrated 100BASE-FX fiber mode enables industrial Ethernet rings and fiber-to-the-node topologies in plants with high electromagnetic interference, chemical exposure, or large physical footprints. PECL outputs drive industry-standard SFP modules or low-cost fiber transceivers at distances up to 2 km. Compared with copper, fiber provides complete galvanic isolation and immunity to ground potential differences, common in petrochemical and outdoor industrial installations. The same IC handles copper or fiber with strap selection.
Được đề xuất
Test & Measurement Instrumentation
Test and measurement equipment (network analyzers, protocol testers, Ethernet traffic generators) benefits from the DP83822IFRHBT's diagnostic capabilities, including TDR-based cable diagnostics, loopback modes, and PRBS pattern testing. Engineers can validate cable plants, measure insertion loss, and isolate faulty segments without external test gear. The 50-MHz clock output provides a stable reference for synchronization, while the industrial temperature rating supports lab-to-field deployment in the same hardware platform.
Được đề xuất
Power Substation Communication (IEC 61850)
The DP83822IFRHBT's 16-kV ESD and industrial-grade temperature range support substation-hardened Intelligent Electronic Devices (IEDs) communicating over IEC 61850 networks. Fiber mode isolates communication from high-voltage transients on copper cable runs, while built-in cable diagnostics help utilities meet commissioning and predictive-maintenance requirements. The RGMII interface pairs naturally with substation processors running IEC 61850 stacks, providing deterministic 100-Mbps throughput for GOOSE and Sampled-Values traffic.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DP83822IFRHBT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DP83822IFRHBR | DP83822HFRHBR | DP83822IRHBR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VQFN-32 (RHB) 5x5 mm | VQFN-32 (RHB) 5x5 mm - same | VQFN-32 (RHB) 5x5 mm - same | VQFN-32 (RHB) 5x5 mm - same |
| Data Rate | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Fiber Support (100BASE-FX) | Yes | Yes | Yes | No (copper only) |
| ESD Rating (HBM, MDI) | 16 kV | 16 kV | 16 kV | 8 kV |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C (or higher for H variant) | -40C to +85C |
| MAC Interface | MII / RMII / RGMII | MII / RMII / RGMII | MII / RMII / RGMII | MII / RMII / RGMII |
| Energy Efficient Ethernet | Yes (IEEE 802.3az) | Yes (IEEE 802.3az) | Yes (IEEE 802.3az) | Yes (IEEE 802.3az) |
Bảo phân biệt quan trọng
- Built-in fiber (100BASE-FX) support (vsDP83822IRHBR (copper only))
- 16-kV HBM ESD on MDI pins (vsDP83822IRHBR (8 kV baseline))
- Integrated 50-MHz clock output (vsGeneric 10/100 PHY (no clock output))
Ghi chú thiết kế
Estimated: place the DP83822IFRHBT's MDI differential pairs (RXD_P/N, TXD_P/N) within 2 mm of the RJ45 magnetics module with 100-ohm differential impedance and ground reference on adjacent layers. Route the MAC-interface signals (MII/RGMII) as 50-ohm single-ended traces with length-matched groups (RGMII TX/RX within 25 mil). Keep the 25-MHz crystal traces short and surrounded by ground to minimize jitter. According to TI's DP83822I layout guidelines, the EPAD must be soldered to a continuous ground plane with multiple thermal vias for heat dissipation.
Isolate analog and digital grounds using a split plane under the PHY, joining at a single point near the device's ground pins. The DP83822IFRHBT's integrated magnetics interface requires careful impedance control on the MDI traces - use a 4-layer PCB stack with continuous ground beneath the traces. Per TI application note SNLA239, switchcore recommendations include avoiding right-angle bends on MDI traces and providing at least 4 ground vias around the EPAD. The integrated 50-MHz clock output can feed an external MAC; route CLK_OUT away from sensitive analog signals to avoid coupling.
Common pitfalls: (1) forgetting to strap RX_DV/CRS_DV correctly for RMII mode - check the DP83822I datasheet register 0x04F0 strap register; (2) leaving unused fiber pins floating when using copper mode - fiber inputs (FX_SD) should be tied to GND; (3) MDIO pull-up resistor missing - the MDIO line requires a 1.5 kOhm to 2.2 kOhm pull-up to VDDIO for reliable communication; (4) ignoring JTAG boundary-scan pins during manufacturing test - confirm whether the JTAG interface is enabled or disabled via strap configuration to avoid false failures.
For 100BASE-TX operation over Cat5 cable, signal integrity is typically handled by the integrated adaptive equalizer and baseline-wander correction. For fiber (100BASE-FX) mode, the PECL outputs must be AC-coupled per IEEE 802.3 and routed as 100-ohm differential pairs to the fiber transceiver. Per TI DP83822I datasheet, the SFD (Start of Frame Delimiter) detection, jabber, and false-carrier rejection are handled in hardware; ensure the MAC's CRC checking is enabled since the PHY does not perform end-to-end CRC verification.
Thông tin tuân thủ
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified (industrial grade, not automotive). MSL rating not stated in provided data.
