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Analog Devices Inc. ADN8810ACP
- Part No.:
- ADN8810ACP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- 24-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADN8810ACP.pdf
- Description:
- IC CURRENT SOURCE(12BIT) 24LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,848
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Product details
Overview
ADN8810ACP from Analog Devices is a 12-bit high-precision current source IC designed for tunable laser diode biasing, delivering programmable output current from 0 mA to 300 mA with ±4 LSB integral nonlinearity, 2.5 V output compliance voltage at full scale, and 3-wire SPI interface supporting up to eight daisy-chained devices.
For engineers reviewing the ADN8810ACP datasheet, ADN8810ACP pinout, ADN8810ACP application, or ADN8810ACP equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, laser-specific application cards, and two confirmed alternative current sources with documented functional and application-level differences.
Technical Context
The ADN8810ACP integrates a 12-bit DAC core, precision current-output amplifier, fault detection circuitry, and 3-bit address decoder - all operating from three independent supply domains (AVDD, DVDD, PVDD) to isolate analog accuracy from digital noise. Its output stage uses external sense resistors (RSN and FB) to set full-scale current, with compliance voltage tightly maintained at ≤2.5 V across −40°C to +85°C.
It implements asynchronous reset and standby (SB) control to force zero output or high-impedance state, supports dither injection via VREF modulation, and enables parallel operation of multiple units for >300 mA total current. Fault indication reports open- or short-load conditions using dedicated digital output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - Enables 4096 discrete current steps over full scale, sufficient for sub-mA tuning resolution in laser bias control. |
| Full-Scale Output Current | Up to 300 mA - Set by external RSN resistor (e.g., 1.37 Ω); supports high-power tunable lasers requiring stable bias beyond typical DAC limits. |
| Output Compliance Voltage | 2.5 V at 300 mA - Defines maximum voltage drop across load before regulation degrades; constrains usable laser forward voltage + sense resistor drop. |
| INL / DNL | ±4 LSB / ±0.75 LSB - Guarantees monotonicity and <0.1% full-scale linearity error, critical for closed-loop wavelength stability in tunable lasers. |
| Settling Time | 3 µs - Ensures rapid current updates during dynamic laser calibration or modulation sequences without overshoot or long tails. |
| Reference Input | 4.096 V nominal - Matches standard 12-bit scaling (1 LSB = 1 mV), enabling direct code-to-current mapping without software scaling. |
| Interface | 3-wire SPI with 3-bit address - Allows up to eight ADN8810ACP units on one bus, simplifying multi-section laser driver designs (e.g., gain/phase/mirror control). |
Pinout & Package
ADN8810ACP is housed in a 24-lead, 4 mm × 4 mm LFCSP package with exposed thermal pad (EPAD) requiring connection to DGND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR0–ADDR2 | Digital address input | Selects one of eight unique SPI addresses; enables independent control of multiple ADN8810ACP units on shared bus. |
| RSN, FB | Analog sense inputs | Connect external precision resistors to define full-scale current; matched trace lengths required to preserve accuracy and output impedance. |
| IOUT (Pins 9, 10) | Analog current output | High-current sourcing node; dual pins reduce resistance and thermal stress; must be routed with low-inductance paths to laser diode. |
| FAULT | Digital status output | Active-high open-drain signal indicating load open (>PVDD−0.6 V) or short ( |
| SB | Standby control input | Logic high disables output stage into high-Z state while retaining register contents; recovery time is 6 µs. |
| VREF | Analog reference input | Accepts 3.9–4.3 V external reference (e.g., ADR292ER); output current scales linearly with this voltage, enabling dither or calibration. |
| PVDD | Analog power for output stage | 3.0–5.5 V supply feeding IOUT amplifier; lower voltage (e.g., 3.3 V) minimizes power dissipation and junction temperature rise. |
| AVDD / DVDD | Analog/digital power rails | Separate 5 V supplies decouple noise-sensitive DAC core (AVDD) from digital logic (DVDD); star grounding mandatory. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable max current via RSN | Full-scale current set externally (e.g., 300 mA @ RSN = 1.37 Ω), eliminating need for internal trimming and supporting application-specific range optimization. |
| Fault detection with digital flag | Dedicated FAULT pin reports open/short load conditions in real time, enabling fail-safe shutdown in laser modules without external monitoring circuitry. |
| Low-noise 12-bit DAC core | 7.5 nA/√Hz current noise density at 250 mA output ensures minimal jitter in laser diode bias, preserving optical signal integrity in coherent systems. |
| Multi-device SPI addressing | 3-bit hardware address (ADDR0–2) allows eight ADN8810ACP units on one SPI bus - essential for integrated tunable laser assemblies with gain, phase, and mirror sections. |
| Standby mode with fast wake-up | SB pin places output in high-Z state while drawing only 1.3 mA; 6 µs recovery enables rapid on-demand laser activation in burst-mode applications. |
Applications
| Tunable Laser Diode Biasing | Laser Section Control (Gain/Phase) |
|---|---|
Use Scenario: Precise DC biasing of front/back mirror, gain, and phase sections in C-band tunable lasers for DWDM transceivers. IC Role / Device Role / Timing Role: High-accuracy current source providing stable, digitally programmable bias current (0–300 mA) with <0.1% INL to maintain wavelength lock and minimize mode hops. Use Value: Eliminates manual potentiometer tuning and analog op-amp circuits; enables factory calibration and real-time thermal compensation via microcontroller. |
Use Scenario: Independent current control of multiple laser subsections (e.g., SOA gain stage and phase shifter) within a single monolithic tunable laser assembly. IC Role / Device Role / Timing Role: One of up to eight ADN8810ACP units on shared SPI bus, each assigned unique ADDR0–2 bits to deliver synchronized or staggered current updates per section. Use Value: Reduces PCB area and BOM count vs. discrete op-amp + DAC solutions; supports coordinated multi-section calibration without timing skew. |
| Automatic Test Equipment (ATE) | High-Current Programmable Load Simulation |
Use Scenario: Generating calibrated, step-variable current stimuli for testing photodiode receivers, optical amplifiers, and laser driver ICs in production test fixtures. IC Role / Device Role / Timing Role: Precision current source driven by test controller via SPI; leverages 3 µs settling and ±0.75 LSB DNL to ensure monotonic stimulus sweeps. Use Value: Replaces bench power supplies and current calibrators; enables automated, high-throughput parametric testing with traceable 12-bit resolution. |
Use Scenario: Simulating dynamic laser diode load behavior during validation of driver ICs or power management circuits under varying current demand. IC Role / Device Role / Timing Role: Fast-settling current sink/source (via external FET configuration) emulating real diode I-V curves, including transient turn-on/off profiles. Use Value: Supports dither injection at VREF to superimpose small-signal AC components on DC bias, replicating real-world modulation effects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision current source applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX5722ETE+ | 12-bit, 200 mA max output; no built-in fault detection; requires external op-amp for current output; 10-lead TDFN. | Lacks integrated fault reporting and laser-optimized compliance; suited for general-purpose programmable loads, not safety-critical laser bias. | Choose when cost sensitivity outweighs fault safety and laser-specific compliance requirements. |
| AD5750-1ACPZ | 14-bit, 200 mA current output; includes HART compatibility and internal fault diagnostics; 24-lead LFCSP same footprint. | Higher resolution but lower max current; designed for industrial 4–20 mA loops, not laser diode bias; lacks multi-device SPI addressing. | Prefer for process control systems needing HART or higher linearity; avoid where >200 mA or multi-section laser coordination is required. |
Compared with MAX5722ETE+ and AD5750-1ACPZ, the ADN8810ACP uniquely combines 300 mA capability, integrated open/short fault detection, 3-wire SPI with hardware addressing, and laser-optimized 2.5 V compliance - making it the only option qualified for multi-section tunable laser biasing in telecom modules.
Availability
ADN8810ACP is available at Aetrix Electronics and suitable for tunable laser modules, automatic test equipment, and optical transceiver manufacturing requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ADN8810ACP 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 leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The ADN8810ACP belongs to Analog Devices' laser diode driver and precision current source product line, engineered specifically for telecom and datacom tunable laser module manufacturers requiring sub-mA current accuracy, integrated fault safety, and multi-device SPI scalability.
FAQ
What is the maximum output current supported by the ADN8810ACP?
The ADN8810ACP supports a maximum full-scale output current of 300 mA, achieved when the external RSN sense resistor is set to 1.37 Ω. This value is specified across −40°C to +85°C ambient temperature and is guaranteed with 2.5 V output compliance voltage. The actual output current scales linearly with the 12-bit input code and reference voltage applied to the VREF pin.
Does the ADN8810ACP include built-in fault detection?
Yes, the ADN8810ACP includes integrated load fault detection. It monitors the IOUT node and asserts the FAULT pin high when detecting either an open load (voltage > PVDD − 0.6 V) or shorted load (voltage < AVSS + 0.2 V). This digital flag enables immediate system-level response without external comparators or monitoring circuitry - a key feature for laser safety compliance.
Can multiple ADN8810ACP devices be controlled from a single SPI bus?
Yes, up to eight ADN8810ACP devices can be independently controlled from one 3-wire SPI bus using hardware address lines ADDR0–ADDR2. Each device responds only to data words prefixed with its unique 3-bit address, allowing synchronized or individual current programming - essential for multi-section tunable laser drivers where gain, phase, and mirror sections require coordinated bias control.
What is the purpose of the ENCOMP pin on the ADN8810ACP?
The ENCOMP pin on the ADN8810ACP must be connected to AVSS (analog ground) to enable proper operation of the internal output amplifier's compensation network. Leaving ENCOMP unconnected or floating may cause instability, oscillation, or degraded settling performance. This connection is mandatory per the datasheet and PCB layout recommendations for stable 300 mA current delivery.
How does the ADN8810ACP handle thermal management in high-current operation?
The ADN8810ACP uses a 4 mm × 4 mm LFCSP package with an exposed thermal pad (EPAD) that must be soldered to a low-noise DGND plane using multiple vias. With θJA = 32°C/W, power dissipation is minimized by operating PVDD at 3.3 V (not 5 V) and limiting output voltage drop. At 300 mA and 85°C ambient, junction temperature remains at 93.5°C - well below the 150°C absolute maximum rating.
ADN8810ACP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Current Source (12 Bit)
- Sensing Method:
- -
- Accuracy:
- -
- Voltage - Input:
- -
- Current - Output:
- 300mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-LFCSP-WQ (4x4)
ADN8810ACP FAQ
1.How can I place an order for ADN8810ACP through Aetrix?
Please submit a Request for Quotation (RFQ) for ADN8810ACP 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 ADN8810ACP reliable?
The price and inventory of ADN8810ACP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADN8810ACP is usually 5 days.
3.What payment methods are accepted for ADN8810ACP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADN8810ACP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADN8810ACP?
ADN8810ACP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADN8810ACP 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 ADN8810ACP?
For technical support, including ADN8810ACP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADN8810ACP requirements.
6.How does Aetrix verify that ADN8810ACP is sourced from the original manufacturer or authorized distributors?
All ADN8810ACP 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 ADN8810ACP meets industry standards.
7.What is the process for return or replacement of ADN8810ACP?
All ADN8810ACP units undergo pre-shipment inspection (PSI). If there is an issue with ADN8810ACP, 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 ADN8810ACP part is unused and in its original packaging.
Return procedure for ADN8810ACP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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