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ADN2891ACPZ-WP
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Product Detailed Parameters
- Description：IC AMP LIM 16LFCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Amplifier Type：Limiting
- Number of Circuits：1
- Output Type：Differential
- Slew Rate：-
- Gain Bandwidth Product：-
- Current - Input Bias：-
- Voltage - Input Offset：100 µV
- Current - Supply：45mA
- Current - Output / Channel：-
- Voltage - Supply Span (Min)：2.9 V
- Voltage - Supply Span (Max)：3.6 V
- Operating Temperature：-40°C ~ 95°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：16-VFQFN Exposed Pad, CSP
- Supplier Device Package：16-LFCSP-VQ (3x3)
- -3db Bandwidth：-
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Overview
The ADN2891ACPZ-WP is a single-channel limiting amplifier designed for high-speed optical communication applications. It operates at data rates up to 3.2 Gbps with an input sensitivity of 4 mV p-p and supports CML outputs featuring 700 mV p-p differential swing. The device integrates a programmable loss-of-signal detector, a received signal strength indicator, and SFF-8472-compliant power measurement capabilities. Powered by a single 3.3 V supply, it dissipates 145 mW and functions within an extended temperature range of −40°C to +95°C in a compact 16-lead LFCSP package.
Feature Summary
- Integrated RSSI and LOS detection circuits eliminate external components
- SFF-8472 compliant average power measurement capability
- Controlled rise and fall times for signal integrity
Applications
- SFP/SFF/GBIC optical transceivers
- OC-3/OC-12/OC-48 receivers
- Gigabit Ethernet (GbE) receivers
- Fibre Channel (FC) receivers
- 10GBASE-LX4 transceivers
Procurement Notes
Verify the specific suffix designation against official manufacturer documentation to confirm exact packaging or qualification status. Availability may vary based on regional distribution channels and current production schedules. Consult authorized distributors for precise stock levels and lead times relevant to your procurement requirements.
Selection Notes
Select this component for designs requiring integrated signal monitoring without additional discrete circuitry. Ensure the PCB layout accommodates the exposed pad thermal dissipation requirements. Verify that the input common-mode voltage aligns with the TIA output specifications for optimal performance.
Part Context
This part belongs to the ADN2891 series of limiting amplifiers from Analog Devices. It is specifically optimized for optoelectronic conversion in SONET, Gigabit Ethernet, and Fibre Channel applications. The series provides a solution for high-speed data quantization with built-in diagnostic features.
Replacement Considerations
No official replacement parts are confirmed in the provided datasheet.
FAQ
How is the Loss of Signal (LOS) threshold adjusted?
The LOS threshold is set by connecting a resistor between the THRADJ pin and VEE, allowing adjustment from 3.5 mV p-p to 35 mV p-p.
What is the function of the RSSI_OUT pin?
The RSSI_OUT pin provides an average current output proportional to the photodiode bias current, facilitating SFF-8472 compliance without external detectors.
