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Analog Devices Inc. ADN8810ACPZ-REEL7
- Part No.:
- ADN8810ACPZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- 24-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADN8810ACPZ-REEL7.pdf
- Description:
- IC CURRENT SOURCE 12 BIT 24LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,819
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Product details
Overview
ADN8810ACPZ-REEL7 from Analog Devices is a 12-bit precision current source IC designed for tunable laser diode biasing, delivering programmable output current from 0 mA to 300 mA with 2.5 V output compliance voltage, ±4 LSB integral nonlinearity, and 3-wire SPI interface. It operates with separate analog (AVDD), digital (DVDD), and power-stage (PVDD) supplies and integrates fault detection for open/short load conditions.
For engineers reviewing the ADN8810ACPZ-REEL7 datasheet, ADN8810ACPZ-REEL7 pinout, ADN8810ACPZ-REEL7 application, or ADN8810ACPZ-REEL7 equivalent, key selection considerations include full-scale current setting via dual external sense resistors (RSN = 1.37 Ω for 300 mA), low 7.5 nA/√Hz current noise at 250 mA, 3 µs settling time, and 24-lead 4 mm × 4 mm LFCSP package with exposed thermal pad.
Technical Context
The ADN8810ACPZ-REEL7 implements a 12-bit DAC-based current source architecture with internal feedback control loop referenced to an external 4.096 V precision voltage applied at VREF. Its output stage uses a high-current amplifier powered by PVDD (3.3 V typical), enabling up to 300 mA while maintaining 2.5 V compliance across −40°C to +85°C.
It features independent supply domains: AVDD powers the DAC core and reference buffer (5 V ±0.5 V), DVDD drives digital logic (3.0–5.5 V), and PVDD supplies the output transistor (3.0–5.5 V). Fault detection monitors IOUT voltage relative to AVSS and PVDD thresholds, asserting FAULT logic output on open (>PVDD − 0.6 V) or short ( ADN8810ACPZ-REEL7 is housed in a 24-lead, 4 mm × 4 mm lead frame chip scale package (LFCSP) with exposed thermal pad (EPAD) requiring connection to DGND for thermal and electrical integrity. The package supports fine-pitch PCB assembly and high-power dissipation (θJA = 32°C/W). Use Scenario: Precise, dynamically adjustable current sourcing for front mirror, back mirror, and gain sections of C-band tunable lasers in optical transceivers. IC Role / Device Role / Timing Role: Primary current source controlling laser diode bias; regulated via SPI commands synchronized to system timing controller. Use Value: Enables sub-mA current resolution and <0.1% linearity for wavelength calibration and channel locking in DWDM systems. Use Scenario: High-accuracy, repeatable current sourcing during functional test of optoelectronic modules and photodiode receivers. IC Role / Device Role / Timing Role: Programmable load current generator triggered by ATE sequencer; FAULT output feeds pass/fail decision logic. Use Value: Reduces test time via 3 µs settling and eliminates external current-sense amplifiers, lowering fixture BOM cost and layout complexity. Use Scenario: Real-time monitoring of laser diode health in telecom line cards, detecting open-circuit failures or ESD-induced shorts. IC Role / Device Role / Timing Role: Fault-aware current source with hardware-level FAULT pin; integrated into watchdog subsystem with microcontroller polling. Use Value: Prevents catastrophic laser damage by halting current within microseconds of fault detection-no firmware delay required. Use Scenario: Simultaneous biasing of multiple laser sections (e.g., phase, gain, monitor photodiode) using shared SPI bus and individual addresses. IC Role / Device Role / Timing Role: One of up to eight independently addressed ADN8810ACPZ-REEL7 units on common SCLK/SDI/CS lines. Use Value: Eliminates need for multiple SPI controllers or GPIO-based chip selects-reduces FPGA resource usage and PCB routing congestion. The following parts are listed as comparable options for similar high-precision current source applications. Compared with MAX5722ETE+ and AD5750ACPZ-REEL7, the ADN8810ACPZ-REEL7 uniquely delivers 300 mA output with integrated fault detection and 4.096 V external reference scaling-making it the only option among the three qualified for direct, safe, high-current tunable laser diode biasing without supplemental circuitry. ADN8810ACPZ-REEL7 is available at Aetrix Electronics and suitable for tunable laser modules, automated test equipment, and optical transceiver manufacturing requiring stable component supply, long-term production continuity, and guaranteed RoHS-compliant packaging. Supply support for ADN8810ACPZ-REEL7 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. Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design and manufacturing expertise spanning precision instrumentation, industrial automation, and optical communications. The ADN8810ACPZ-REEL7 belongs to Analog Devices' laser diode driver and precision current source product line, engineered specifically for high-stability, low-noise biasing of tunable lasers in telecom, datacom, and test instrumentation applications. The ADN8810ACPZ-REEL7 delivers a maximum full-scale output current of 300 mA when configured with RSN = 1.37 Ω and supplied with a 4.096 V reference voltage at VREF. This value is guaranteed across −40°C to +85°C ambient temperature and is validated per Table 1 in the Rev. C datasheet. Operation above 300 mA risks violating compliance voltage and INL specifications. The ADN8810ACPZ-REEL7 monitors the IOUT node voltage relative to AVSS and PVDD to detect open or short conditions. An open load is flagged when IOUT exceeds PVDD − 0.6 V; a short is detected when IOUT falls below AVSS + 0.2 V. Upon either event, the FAULT pin asserts low (VOL ≤ 0.5 V at DVDD = 5 V) and remains active until cleared by a valid SPI write or RESET assertion. Yes-up to eight ADN8810ACPZ-REEL7 units can be paralleled to scale total output current, with each device contributing up to 300 mA. All units share SCLK, SDI, and CS lines; unique 3-bit addresses (ADDR2–ADDR0) allow independent programming. Figure 18 in the datasheet shows a verified 600 mA dual-device configuration driving a pump laser. The ENCOMP pin on the ADN8810ACPZ-REEL7 must be connected to AVSS (analog ground) to enable the internal compensation network for stable closed-loop operation. Leaving ENCOMP floating or connecting it to any other potential causes instability, oscillation, or failure to regulate output current accurately-this requirement is explicitly stated in Table 4 and Figure 3 of the Rev. C datasheet. Yes-the ADN8810ACPZ-REEL7 supports current dithering via modulation of the VREF input. As described in Figure 19 and Section "Adding Dither to the Output Current", an external op-amp (e.g., AD8605) injects AC signal onto the 4.096 V reference, causing proportional current modulation at IOUT. This technique is used in wavelength-locking algorithms for tunable lasers without modifying the digital control path.Key Specifications
Parameter
Value and Actual Design Meaning
Resolution
12-bit - Enables 4096 discrete current steps over full scale.
Full-Scale Output Current
300 mA - Achieved with RSN = 1.37 Ω; sets maximum laser bias capability.
Output Compliance Voltage
2.5 V - Maximum voltage drop across load before regulation degrades; critical for laser diode forward voltage margin.
INL / DNL
±4 LSB / ±0.75 LSB - Ensures monotonicity and <0.1% linearity error over 2–100% of full scale.
Current Noise Density
7.5 nA/√Hz at 250 mA - Directly impacts laser diode intensity noise and wavelength stability in tunable systems.
Settling Time
3 µs - Supports fast current modulation for dynamic laser tuning and ATE sequencing.
SPI Interface
3-wire, 12.5 MHz max clock - Allows daisy-chaining up to eight devices using 3-bit address (ADDR0–ADDR2).
Pinout & Package
Pin/Terminal
Circuit Role
Design Meaning
1 (ADDR2)
Digital address input
MSB of 3-bit device address; enables up to eight independent SPI slaves on shared bus.
2 (RSN)
Analog sense resistor feedback
Connects to one end of external 1.37 Ω sense resistor; sets full-scale current with FB pin.
3 (FB)
Analog sense resistor feedback
Connects to other end of RSN; completes current-sense loop for closed-loop regulation.
6 (FAULT)
Digital open-drain output
Asserts low on load open (>PVDD − 0.6 V) or short (
7 (SB)
Digital standby control
Active-high input; places output in high-impedance state with 6 µs recovery to prior current level.
8,11 (PVDD)
Analog power supply
Provides power to output amplifier stage; recommended at 3.3 V to minimize dissipation at 300 mA.
9,10 (IOUT)
Analog current output
High-current output terminals; paralleled internally to deliver single-ended 300 mA sink/source path.
14 (VREF)
Analog reference input
Accepts precision 4.096 V external reference (e.g., ADR292ER); output current scales linearly with this voltage.
15 (AVDD)
Analog power supply
Powers DAC core and reference buffer; must be low-noise 5 V ±0.5 V for optimal INL/DNL performance.
16 (AVSS)
Analog ground return
Primary analog ground; connects to die substrate and EPAD; star-grounded separately from digital grounds.
18 (DVSS)
Digital ground return
Return path for DVDD logic; kept separate from AVSS to prevent digital switching noise coupling into analog path.
19 (SDI)
Digital serial data input
Accepts 16-bit SPI word (A3–A0 + D11–D0); MSB must be 0, A2–A0 match ADDR2–ADDR0 for register update.
20 (SCLK)
Digital serial clock input
Drives data capture on rising edge; supports up to 12.5 MHz for sub-microsecond command latency.
21 (CS)
Digital chip select
Active-low enable; latches 16-bit shift register contents into DAC register upon rising edge after CS high pulse ≥30 ns.
22 (RESET)
Digital asynchronous reset
Active-low signal forcing DAC register to 0x000; output returns to 0 mA immediately, independent of SB state.
23 (DVDD)
Digital power supply
Powers SPI interface, address decoder, and FAULT logic; tolerant of standard 3.0–5.5 V digital rail noise.
24 (DGND)
Digital ground reference
Reference for DVDD logic; tied to DVSS in single-supply designs; isolated from AVSS to maintain PSRR > 0.4 µA/V.
EPAD
Thermal & electrical ground
Exposed copper slug; must be soldered to large DGND copper area with multiple thermal vias for junction temp control.
Key Features
Feature
Design Value
Programmable 300 mA current source
Full-scale set by two matched external resistors (RSN); enables precise laser bias scaling without recalibration.
Low-noise 7.5 nA/√Hz output
Minimizes intensity noise in tunable lasers, directly supporting narrow-linewidth operation and reduced phase jitter.
Integrated open/short load detection
Hardware-level FAULT assertion eliminates need for external monitoring circuitry in laser safety-critical applications.
Multi-device SPI addressing (3-bit)
Supports up to eight ADN8810ACPZ-REEL7 units on one bus-ideal for multi-section laser driver boards (gain/phase/mirror).
2.5 V output compliance at 300 mA
Ensures stable regulation even with laser diodes exhibiting forward voltage drift or temperature-dependent Vf.
Applications
Tunable Laser Diode Biasing
Automated Test Equipment (ATE)
Laser Diode Protection Circuitry
Multiplexed Multi-Channel Laser Drivers
Equivalent & Alternatives
Alternative Part
Technical Difference
Application Difference
Selection Advice
MAX5722ETE+
12-bit, 200 mA max output; no integrated fault detection; uses internal reference (1.25 V); 16-pin TQFN.
Lacks open/short protection and external VREF flexibility; lower max current limits use in 300 mA laser biasing.
Select only if fault detection is handled externally and 200 mA suffices; requires additional op-amp for current boosting.
AD5750ACPZ-REEL7
16-bit, 200 mA current output; supports HART-compatible voltage/current modes; larger 32-lead LFCSP.
Higher resolution but lower max current; includes HART modulation not needed for pure laser biasing; higher cost and footprint.
Prefer when 16-bit resolution or industrial protocol support is mandatory; avoid when 300 mA and fault detection are primary requirements.
Availability
Manufacturer
FAQ
What is the maximum output current capability of the ADN8810ACPZ-REEL7?
How does the ADN8810ACPZ-REEL7 implement fault detection?
Can multiple ADN8810ACPZ-REEL7 devices be used in parallel to increase output current?
What is the role of the ENCOMP pin on the ADN8810ACPZ-REEL7?
Does the ADN8810ACPZ-REEL7 support dithering of the output current?
ADN8810ACPZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
ADN8810ACPZ-REEL7 FAQ
1.How can I place an order for ADN8810ACPZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADN8810ACPZ-REEL7 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 ADN8810ACPZ-REEL7 reliable?
The price and inventory of ADN8810ACPZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADN8810ACPZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADN8810ACPZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADN8810ACPZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADN8810ACPZ-REEL7?
ADN8810ACPZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADN8810ACPZ-REEL7 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 ADN8810ACPZ-REEL7?
For technical support, including ADN8810ACPZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADN8810ACPZ-REEL7 requirements.
6.How does Aetrix verify that ADN8810ACPZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADN8810ACPZ-REEL7 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 ADN8810ACPZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADN8810ACPZ-REEL7?
All ADN8810ACPZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADN8810ACPZ-REEL7, 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 ADN8810ACPZ-REEL7 part is unused and in its original packaging.
Return procedure for ADN8810ACPZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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