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Texas Instruments ONET8501PBRGTR
- Part No.:
- ONET8501PBRGTR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
ONET8501PBRGTR.pdf
- Description:
- IC LIMITING 1 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,425
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Product details
Overview
ONET8501PBRGTR from Texas Instruments is a 11.3-Gbps rate-selectable limiting amplifier with CML inputs/outputs, 34-dB small-signal gain, digitally adjustable output amplitude (350/650/850 mVpp), and integrated 2-wire I²C interface for bandwidth, LOS threshold, preemphasis, and input slice control. It operates from a single 3.3-V supply and targets high-speed optical receiver front-ends in SFP+ and XFP modules.
For engineers reviewing the ONET8501PBRGTR datasheet, ONET8501PBRGTR pinout, ONET8501PBRGTR application, or ONET8501PBRGTR equivalent, key selection considerations include its 16-pin VQFN package, differential 100-Ω input termination, on-chip 50-Ω CML output back-termination, programmable 2.4–9 GHz bandwidth, and −40°C to +100°C industrial temperature range.
Technical Context
The ONET8501PBRGTR integrates a high-speed analog data path with offset cancellation feedback, dual peak-detector-based loss-of-signal (LOS) monitoring, and digital control logic. Its input stage features selectable bandwidth via RATE0/RATE1 pins or 4-bit register-controlled filters (RSA–RSD), enabling optimization across 2.125–11.3 Gbps data rates.
Output stage functionality includes three programmable amplitude levels (350/650/850 mVpp), 0–8 dB preemphasis in 1-dB steps, and output disable (DIS) with 20-ns response. The device uses internal band-gap reference and bias generation, supports I²C-compatible 400-kHz serial programming, and provides open-drain LOS assertion with 10-kΩ external pullup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 11.3 Gbps - supports PRBS31 at BER < 10⁻¹² with 5 mVpp input sensitivity |
| Small-Signal Gain | 34 dB - ensures full differential output swing for input signals as low as 20 mVpp |
| Output Amplitude | 350 / 650 / 850 mVpp - selectable via AMP[1:0] register bits for optimal signal integrity |
| Bandwidth Range | 2.4–9 GHz - configurable via RATE0/RATE1 pins or RSA–RSD registers for noise/speed tradeoffs |
| Input Sensitivity | 5 mVpp (min) at 11.3 Gbps - enables operation with ultra-low-amplitude optical signals |
| Supply Voltage | 3.3 V ±10% - single-supply operation with typical 63-mA ICC, enabling low-power 10G receiver designs |
| LOS Threshold Range | 15–80 mVpp - digitally adjustable in two ranges (LOSRNG = 0/1) with 7-bit resolution per range |
Pinout & Package
ONET8501PBRGTR is housed in a RoHS-compliant 3.00 mm × 3.00 mm, 16-pin VQFN package (RGT suffix) with exposed thermal pad (EP) requiring PCB ground connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIN+ | Analog input (noninverted) | Differentially 100-Ω terminated to DIN−; accepts AC-coupled CML or LVPECL signals |
| DIN− | Analog input (inverted) | Differentially 100-Ω terminated to DIN+; forms balanced input pair for common-mode rejection |
| DOUT+ | CML output (noninverted) | On-chip 50-Ω back-terminated to VCC; delivers fully differential CML output without external resistors |
| DOUT− | CML output (inverted) | On-chip 50-Ω back-terminated to VCC; complements DOUT+ for impedance-matched transmission lines |
| DIS | Digital input | Active-high output disable; reduces output to 5 mVrms when asserted, enabling power-gating in burst-mode systems |
| LOS | Open-drain MOS output | Asserts high when input falls below programmed threshold; requires 10-kΩ pullup to VCC for proper logic level |
| SDA | Digital input (I²C data) | Open-drain serial data line; internally pulled up, compatible with standard I²C master timing (400 kHz max) |
| SCK | Digital input (I²C clock) | Serial clock input; internally pulled up, synchronizes register read/write operations |
| RATE0 / RATE1 | Digital input | Hardwired bandwidth selection pins; default to RSD register (RATE1=1, RATE0=0 → 9 GHz) if unconnected |
| VCC | Power supply | 3.3-V supply input (pins 9 & 12); decoupling with 0.1-μF capacitors required per datasheet layout guidelines |
| GND | Ground | Reference node for analog/digital circuits (pins 1 & 4); exposed pad (EP) must be soldered to PCB ground plane |
| COC1 / COC2 | Analog filter terminals | Offset cancellation loop capacitor nodes; 330-pF external cap sets low-frequency cutoff to 10 kHz |
Key Features
| Feature | Design Value |
|---|---|
| Digitally selectable bandwidth | Four default settings (2.4–9 GHz) via RATE0/RATE1 pins; fine-tuned via 4-bit registers for precise noise/speed optimization |
| Programmable output preemphasis | 0–8 dB in 1-dB steps (PEADJ[3:0]) to compensate for frequency-dependent channel loss in microstrip/stripline interconnects |
| Adjustable input threshold voltage | 8-bit THADJ[7:0] register enables dynamic slice-level tuning to minimize BER under pulse-width distortion or jitter conditions |
| Integrated offset cancellation | DC feedback loop with COC1/COC2 filter nodes eliminates internal offset drift, ensuring stable operation down to 20 mVpp inputs |
| Configurable loss-of-signal detection | Two independent 7-bit LOS ranges (15–35 mVpp or 35–80 mVpp) with hysteresis control for robust signal presence monitoring |
Applications
| 10-Gigabit Ethernet Optical Receivers | 2x/4x/8x/10x Fiber Channel Receivers |
|---|---|
Use Scenario: Front-end amplification in SFP+ transceivers for 10GBASE-LR/ER optical links over single-mode fiber. IC Role / Device Role / Timing Role: Limiting amplifier conditioning weak photodiode current into clean CML logic for downstream clock-data recovery. Use Value: 5 mVpp sensitivity and 11.3-Gbps capability enable reliable reception at extended reach with low-power budget. |
Use Scenario: Signal regeneration in 8G/16G FC optical receivers used in enterprise storage area networks. IC Role / Device Role / Timing Role: High-fidelity limiting stage restoring degraded serial data after long-haul fiber transmission. Use Value: Programmable bandwidth (7.6–8.4 GHz) matches FC data rates while suppressing out-of-band noise. |
| SONET OC-192/SDH-64 Receivers | SFP+ and XFP Transceiver Modules |
Use Scenario: Line-rate amplification in telecom transport equipment handling 9.953-Gbps OC-192 signals. IC Role / Device Role / Timing Role: Low-jitter limiting amplifier preserving eye opening for synchronous payload extraction. Use Value: 3 pspp deterministic jitter at 11.3 Gbps ensures compliance with SONET jitter tolerance masks. |
Use Scenario: Core signal conditioning IC in pluggable optical modules compliant with SFF-8431 and SFF-8472 standards. IC Role / Device Role / Timing Role: Integrated CML I/O with on-chip 50-Ω termination simplifies PCB layout and reduces BOM count. Use Value: 3-mm × 3-mm VQFN footprint and 170-mW typical power enable compact, thermally efficient module designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar limiting amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3982AETE+ | Fixed 10.3-Gbps bandwidth; no I²C interface; 3.3-V supply; 32-pin TQFN | Lacks digital configurability; suited for cost-sensitive, fixed-rate deployments without LOS or preemphasis needs | Select when design requires proven reliability at 10.3 Gbps without programmability overhead |
| LMH0384SQ/NOPB | 11-Gbps CDR with integrated limiting amp; 2.5-V supply; 40-pin WQFN; includes clock recovery | Provides full CDR functionality instead of standalone limiting; higher power and complexity | Select when system-level clock recovery is required alongside amplification, not just signal conditioning |
Compared with MAX3982AETE+ and LMH0384SQ/NOPB, ONET8501PBRGTR uniquely balances high-speed flexibility (11.3 Gbps), comprehensive digital control (I²C), and minimal footprint (16-pin VQFN), making it optimal for programmable, space-constrained optical receiver designs.
Availability
ONET8501PBRGTR is available at Aetrix Electronics and suitable for 10-Gigabit Ethernet optical receivers, SFP+ transceiver modules, and SONET OC-192/SDH-64 systems requiring stable component supply, industrial temperature support, and RoHS-compliant packaging.
Supply support for ONET8501PBRGTR 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 technologies, with decades of expertise in high-speed communications ICs.
The ONET8501PBRGTR belongs to TI's ONET family of optical networking components, designed specifically for high-performance, low-power, digitally configurable limiting amplifiers in next-generation optical receiver subsystems.
FAQ
What is the maximum data rate supported by the ONET8501PBRGTR?
The ONET8501PBRGTR supports up to 11.3 Gbps with PRBS31 pattern and BER < 10⁻¹² at 5 mVpp input sensitivity. This performance is validated across the full industrial temperature range (−40°C to +100°C) and meets requirements for 10G Ethernet, 8G/10G Fiber Channel, and OC-192 applications. The device maintains signal integrity with <8 pspp deterministic jitter at this rate.
Does the ONET8501PBRGTR require external termination resistors on its CML outputs?
No, the ONET8501PBRGTR includes on-chip 50-Ω back-termination to VCC on both DOUT+ and DOUT− pins, eliminating the need for external resistors. This integrated termination simplifies PCB layout, reduces component count, and ensures consistent impedance matching for high-speed CML signaling into 50-Ω transmission lines.
How is loss-of-signal (LOS) detection configured on the ONET8501PBRGTR?
LOS detection on the ONET8501PBRGTR is configurable via I²C register control: LOSRNG bit selects between low-range (15–35 mVpp) or high-range (35–80 mVpp) thresholds, and 7-bit registers (LOSA–LOSD) set precise assert levels. Default values can also be selected using RATE0/RATE1 pins, and the open-drain LOS output requires a 10-kΩ pullup to VCC.
Can the ONET8501PBRGTR operate with input signals below 20 mVpp?
Yes - the ONET8501PBRGTR achieves 5 mVpp input sensitivity at 11.3 Gbps (PRBS31, BER < 10⁻¹²) due to its 34-dB gain and integrated offset cancellation loop. With COC1/COC2 filter capacitors, low-frequency response extends down to 10 kHz, supporting very low-amplitude, low-frequency-modulated optical signals without degradation.
What package type and thermal characteristics does the ONET8501PBRGTR use?
The ONET8501PBRGTR uses a 3.00 mm × 3.00 mm, 16-pin VQFN package (RGT) with exposed thermal pad. It dissipates less than 170 mW typical and is characterized from −40°C to +100°C. The exposed pad must be soldered to a PCB ground plane for effective thermal conduction and electrical stability.
ONET8501PBRGTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Limiting
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 9 GHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- 50mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.95 V
- Voltage - Supply Span (Max):
- 3.6 V
- Operating Temperature:
- -40°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
ONET8501PBRGTR FAQ
1.How can I place an order for ONET8501PBRGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for ONET8501PBRGTR 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 ONET8501PBRGTR reliable?
The price and inventory of ONET8501PBRGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ONET8501PBRGTR is usually 5 days.
3.What payment methods are accepted for ONET8501PBRGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ONET8501PBRGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ONET8501PBRGTR?
ONET8501PBRGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ONET8501PBRGTR 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 ONET8501PBRGTR?
For technical support, including ONET8501PBRGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ONET8501PBRGTR requirements.
6.How does Aetrix verify that ONET8501PBRGTR is sourced from the original manufacturer or authorized distributors?
All ONET8501PBRGTR 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 ONET8501PBRGTR meets industry standards.
7.What is the process for return or replacement of ONET8501PBRGTR?
All ONET8501PBRGTR units undergo pre-shipment inspection (PSI). If there is an issue with ONET8501PBRGTR, 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 ONET8501PBRGTR part is unused and in its original packaging.
Return procedure for ONET8501PBRGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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