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ONET2511TA Datasheet(PDF) 1 Page - Texas Instruments |
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ONET2511TA Datasheet(HTML) 1 Page - Texas Instruments |
1 / 12 page OUT+ OUT− VCC GND Bandgap Voltage Reference and Bias Current Generation Offset Cancellation CML Output Buffer + − + − IN FILTER RSSI Voltage Amplifier Transimpedance Amplifier RF Disable 750 W Not Recommended for New Designs ONET2511TA www.ti.com SLLS622 – SEPTEMBER 2004 2.5 GBPS TRANSIMPEDANCE AMPLIFIER WITH RSSI Check for Samples: ONET2511TA 1 FEATURES DESCRIPTION • 2.5 GHz Bandwidth • 4.0 k Ω Differential Transimpedance The ONET2511TA is a high-speed transimpedance amplifier used in SDH/SONET systems with data • 10 pA/ √Hz Typical Input Referred Noise rates up to 2.5Gbps. It features a low input referred • 2 mA Maximum Input Current noise, 2.5GHz bandwidth, 4.0k Ω transimpedance, • Offset Cancellation and a received signal strength indicator. • Received Signal Strength Indication The ONET2511TA device is available in die form and • Differential CML Data Outputs requires a single +3.3V supply. It is very power efficient and dissipates less than 83 mW (typical). It is • Single +3.3V Supply characterized for operations from –40°C to 85°C. • Bare-Die Option AVAILABLE OPTIONS APPLICATIONS TA DIE • SONET OC-48 –40°C to 85°C ONET2511TAY • SDH STM-16 • APD Preamplifier-Receivers • PIN Preamplifier-Receivers DETAILED DESCRIPTION BLOCK DIAGRAM The ONET2511TA is a high performance 2.5 Gbps transimpedance amplifier that can be segmented into the signal path, filter, and offset cancellation block. The signal path consists of a transimpedance amplifier stage, a voltage amplifier, and an output buffer. The filter circuit provides a filtered VCC for the photodiode. The offset correction circuit uses an internal low pass filter to cancel the DC on the input and it provides a signal to monitor the received signal strength. A simplified block diagram of the ONET2511TA is shown in Figure 1. Figure 1. Simplified Block Diagram of the ONET2511TA 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2004, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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