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Analog Devices Inc. ADN2871ACPZ-RL
- Part No.:
- ADN2871ACPZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Laser Drivers
- Package:
- 24-VFQFN Exposed Pad, CSP
- Datasheet:
-
ADN2871ACPZ-RL.pdf
- Description:
- IC LASER DRV 4.25GB 3.6V 24LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,926
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Product details
Overview
ADN2871ACPZ-RL from Analog Devices is a 3.3 V, single-loop laser diode driver (LDD) for SFP/SFF optical transceivers, supporting data rates from 50 Mbps to 4.25 Gbps. It delivers bias current up to 100 mA and modulation current up to 90 mA with typical 60 ps rise/fall time, enabling VCSEL, DFB, and FP laser control in multirate Fibre Channel and Gigabit Ethernet modules.
For engineers reviewing the ADN2871ACPZ-RL datasheet, ADN2871ACPZ-RL pinout, ADN2871ACPZ-RL application, or ADN2871ACPZ-RL equivalent, key selection criteria include its SFF-8472 digital diagnostics compliance, voltage/resistor setpoint configurability for average power and extinction ratio, automatic laser shutdown (ALS), and integrated bias/modulation current monitoring for closed-loop optical control.
Technical Context
The ADN2871ACPZ-RL implements a single-loop average power control architecture using photodiode monitor feedback, with independent extinction ratio adjustment via modulation current scaling. Its dual-mode setpoint interface-voltage-controlled (PAVREF/ERREF) or resistor-controlled (PAVSET/ERSET)-enables flexible integration with microcontrollers or analog calibration circuits.
It supports both single-ended (IMODP-to-ground) and differential (IMODP/IMODN) laser drive configurations, with guaranteed jitter performance: ≤1.1 ps rms random jitter and ≤35 ps deterministic jitter at 2.5 Gbps. The device interfaces directly with ADuC7019/ADuC7020 MicroConverter® devices and ADN2890/ADN2891/ADN2892 limiting amplifiers for full SFP transceiver solutions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V nominal (3.0 V–3.6 V range); enables direct compatibility with SFP module power rails. |
| Bias Current Range | 2 mA to 100 mA; covers threshold and operating currents for VCSEL, FP, and DFB lasers across temperature and lifetime. |
| Modulation Current Range | 5 mA to 90 mA; supports extinction ratio tuning while maintaining signal integrity up to 4.25 Gbps. |
| Rise/Fall Time | Typical 60 ps (single-ended); ensures clean high-speed NRZ eye opening per SFP MSA timing requirements. |
| Jitter Performance | ≤1.1 ps rms random jitter at 2.5 Gbps; meets OC48-FEC and 1GE SFP mask margin specifications. |
| Operating Temperature | −40°C to +85°C; qualified for industrial-grade SFP modules deployed in telecom and datacom equipment. |
| Package | 4 mm × 4 mm LFCSP (24-lead); exposes thermal paddle for efficient heat dissipation in compact SFP housings. |
Pinout & Package
The ADN2871ACPZ-RL is housed in a 4 mm × 4 mm, 24-lead Lead Frame Chip Scale Package (LFCSP) with exposed thermal paddle requiring connection to ground. Pin 1 (CCBIAS) supports ac/dc-coupled bias path selection; Pins 21 (IMODP) and 22 (IMODN) deliver differential modulation current; Pin 24 (IBIAS) sinks laser bias current; Pin 12 (ALS) provides TTL-compatible automatic laser shutdown control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IMODP / IMODN | Differential modulation current outputs | Sink current into laser anode/cathode pair; enables low-jitter, common-mode noise rejection in high-speed links. |
| IBIAS | Laser bias current sink | Directly sets laser DC operating point; monitored via IBMON for closed-loop average power control. |
| PAVSET / ERSET | Analog setpoint inputs | Configure average optical power and extinction ratio via external resistor or DAC voltage-no firmware required. |
| ALS | Automatic laser shutdown input | TTL-level active-high signal asserting <5 μs turn-off; meets SFF-8472 Tx_Disable timing spec. |
| FAIL | Fault alarm output | Open-drain output signaling laser fault condition; drives host controller interrupt or SFP Tx_Fault indicator. |
| IBMON / IMMON | Bias/modulation monitor current sources | Provide scaled replicas (IBIAS/IBMON ≈ 100 A/A, IMOD/IMMON = 42 A/A) for real-time diagnostics per SFF-8472. |
Key Features
| Feature | Design Value |
|---|---|
| SFF-8472 Digital Diagnostics Compliance | Enables real-time monitoring of bias current, modulation current, temperature, and supply voltage via I²C interface on host side. |
| Voltage or Resistor Setpoint Control | Eliminates need for dedicated calibration firmware: PAVREF/ERREF accept DAC outputs; PAVSET/ERSET accept trim-pot resistors. |
| Single-Loop Average Power Control | Uses photodiode monitor feedback (MPD) to dynamically adjust IBIAS and maintain stable optical output despite laser aging or temperature drift. |
| Integrated Laser Safety Functions | ALS input triggers sub-5 μs optical shutdown; FAIL output asserts on open-circuit laser, overcurrent, or photodiode failure. |
| Dual-Mode Laser Interface Support | Configurable for single-ended (IMODP-to-ground) or differential (IMODP/IMODN) drive-matches VCSEL, DFB, and FP TOSA pinouts. |
Applications
| 1×/2×/4× Fibre Channel SFP Modules | Multirate OC3 to OC48-FEC SFP Modules |
|---|---|
Use Scenario: Deployed in enterprise storage area networks requiring hot-pluggable, MSA-compliant optical links at 1.0625 Gbps (1×), 2.125 Gbps (2×), or 4.25 Gbps (4×) Fibre Channel speeds. IC Role / Device Role / Timing Role: Laser diode driver providing precise bias and modulation current control with SFF-8472 telemetry for link health monitoring. Use Value: Maintains >25% mask margin at 4.25 Gbps while enabling dynamic extinction ratio tuning to compensate for laser aging across −40°C to +85°C. | Use Scenario: Used in SONET/SDH line cards supporting OC3 (155 Mbps), OC12 (622 Mbps), OC48 (2.488 Gbps), and FEC-enhanced OC48 rates. IC Role / Device Role / Timing Role: Single-loop LDD delivering <1.1 ps rms jitter and deterministic jitter <35 ps to meet GR-253-CORE optical waveform compliance. Use Value: Enables drop-in replacement of legacy drivers without layout change due to pin compatibility with ADN2870 and identical LFCSP footprint. |
| LX-4 Modules | DWDM/CWDM SFP Modules |
Use Scenario: Integrated into LX-4 quad-SFP modules for 10 Gigabit Ethernet aggregation switches with extended reach (up to 10 km over SMF). IC Role / Device Role / Timing Role: Provides synchronized bias current control across four channels with independent PAVSET/ERSET tuning per channel. Use Value: Supports simultaneous operation of four ADN2871ACPZ-RL units sharing common VCC and ground planes while maintaining channel isolation. | Use Scenario: Embedded in coarse/dense wavelength division multiplexing SFP transceivers operating at 1470–1610 nm with tight optical power stability requirements. IC Role / Device Role / Timing Role: Laser driver implementing closed-loop average power control using MPD feedback to hold PAV within ±0.2 dB over temperature and lifetime. Use Value: Achieves <0.2 dB PAV drift from −40°C to +85°C-critical for DWDM channel spacing and OSNR budget preservation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar laser diode driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADN2870ACPZ-RL | Dual-loop architecture with separate average power and extinction ratio control loops; higher ICC (38 mA vs. 32 mA); same 4 mm × 4 mm LFCSP package and pinout. | Required for applications demanding independent, high-precision control of both PAV and ER under wide temperature variation or aggressive laser aging profiles. | Select ADN2870ACPZ-RL when dual-loop stability outweighs power efficiency; ADN2871ACPZ-RL suffices for cost-sensitive, single-loop-optimized designs. |
| MAX3736ETE+ | 3.3 V, 155 Mbps–4.25 Gbps LDD; 16-pin TQFN; no integrated ALS/FAIL logic; requires external comparator for fault detection. | Suitable for non-MSA-compliant or custom optical modules where SFF-8472 diagnostics are not mandated. | Choose MAX3736ETE+ only if board space allows larger TQFN and system-level fault handling is already implemented externally. |
Compared with ADN2870ACPZ-RL, the ADN2871ACPZ-RL trades dual-loop precision for lower power and simpler calibration-ideal for SFP modules where average power stability dominates extinction ratio drift. Against MAX3736ETE+, it delivers integrated SFF-8472 alarms and monitoring, reducing BOM count and firmware overhead in standards-compliant designs.
Availability
ADN2871ACPZ-RL is available at Aetrix Electronics and suitable for 1GE SFP/SFF transceiver modules, multirate OC3–OC48-FEC systems, and DWDM/CWDM optical links requiring stable component supply, long-term lifecycle support, and MSA-compliant diagnostics.
Supply support for ADN2871ACPZ-RL 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
Analog Devices, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.
The ADN2871ACPZ-RL belongs to Analog Devices' optical communications product line, designed specifically for SFP/SFF pluggable transceiver modules requiring SFF-8472-compliant laser control, diagnostics, and reliability across telecom and datacom environments.
FAQ
What is the maximum data rate supported by the ADN2871ACPZ-RL?
The ADN2871ACPZ-RL supports data rates from 50 Mbps up to 4.25 Gbps, validated per SFP MSA and OC48-FEC specifications. At 4.25 Gbps, it achieves ≤55 ps rise/fall time and ≤17 ps deterministic jitter in differential mode-meeting stringent optical eye mask requirements for multirate Fibre Channel and Gigabit Ethernet applications.
Does the ADN2871ACPZ-RL support both VCSEL and DFB lasers?
Yes, the ADN2871ACPZ-RL explicitly supports VCSEL, DFB, and FP lasers per its datasheet. Its bias current range (2–100 mA) and modulation current range (5–90 mA), combined with programmable average power and extinction ratio control, accommodate the distinct threshold and slope efficiency characteristics of all three laser types across temperature and lifetime.
How does the ADN2871ACPZ-RL implement automatic laser shutdown (ALS)?
The ADN2871ACPZ-RL implements ALS via Pin 12 (ALS), a TTL-compatible input that asserts <5 μs optical shutdown when driven high. Upon ALS assertion, IBIAS and IMOD are rapidly disabled, driving optical output below 10% of nominal within 1 μs. The FAIL output then signals host controllers per SFF-8472 Tx_Fault protocol.
Can the ADN2871ACPZ-RL be used in voltage setpoint mode without a microcontroller?
No-the voltage setpoint mode requires externally generated reference voltages (PAVREF and ERREF) from a DAC or precision voltage source. However, the ADN2871ACPZ-RL also supports resistor setpoint mode (tying PAVREF/ERREF/RPAV to VCC), enabling fully analog calibration using potentiometers on PAVSET and ERSET-no microcontroller needed.
Is the ADN2871ACPZ-RL pin-compatible with any other Analog Devices laser drivers?
Yes, the ADN2871ACPZ-RL is pin-compatible with the ADN2870ACPZ-RL dual-loop laser diode driver. Both share identical 24-lead LFCSP packaging, pin assignments, and footprint-allowing hardware reuse across single-loop and dual-loop design variants without PCB revision.
ADN2871ACPZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Laser Diode Driver
- Data Rate:
- 4.25Gbps
- Number of Channels:
- 1
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- 32 mA
- Current - Modulation:
- 90mA
- Current - Bias:
- 100 mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-LFCSP-VQ (4x4)
- Mounting Type:
- Surface Mount
ADN2871ACPZ-RL FAQ
1.How can I place an order for ADN2871ACPZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADN2871ACPZ-RL 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 ADN2871ACPZ-RL reliable?
The price and inventory of ADN2871ACPZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADN2871ACPZ-RL is usually 5 days.
3.What payment methods are accepted for ADN2871ACPZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADN2871ACPZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADN2871ACPZ-RL?
ADN2871ACPZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADN2871ACPZ-RL 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 ADN2871ACPZ-RL?
For technical support, including ADN2871ACPZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADN2871ACPZ-RL requirements.
6.How does Aetrix verify that ADN2871ACPZ-RL is sourced from the original manufacturer or authorized distributors?
All ADN2871ACPZ-RL 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 ADN2871ACPZ-RL meets industry standards.
7.What is the process for return or replacement of ADN2871ACPZ-RL?
All ADN2871ACPZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADN2871ACPZ-RL, 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 ADN2871ACPZ-RL part is unused and in its original packaging.
Return procedure for ADN2871ACPZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADN2871ACPZ-RL Tags
-
EPC21701
EPC
-
EPC21601
EPC
-
MAX3799ETJ+T
Analog Devices Inc./Maxim Integrated
-
AD9665ACPZ-REEL7
Analog Devices Inc.
-
MAX3740AETG+T
Analog Devices Inc./Maxim Integrated
-
MAX3795ETG+
Analog Devices Inc./Maxim Integrated
-
EPC21603
EPC
-
ONET8501VRGPT
Texas Instruments
-
MAX3738ETG+T
Analog Devices Inc./Maxim Integrated
-
SY88022ALMG-TR
Microchip Technology
-
ISL78365ARZ-T7A
Renesas
-
EPC21603ENGRT
EPC
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