Texas Instruments ONET2511TA
The ONET2511TA is a high-speed transimpedance amplifier used in SDH/SONET systems with data rates up to 2.5Gbps. It features a low input referred noise, 2.5GHz bandwidth, 4.0kΩ transimpedance, and a received signal strength indicator. The ONET2511TA device is available in die form and requires a single +3.3V supply.FEATURES
1● 2.5 GHz Bandwidth
● 4.0 kΩ Differential Transimpedance
● 10 pA/√Hz Typical Input Referred Noise
● 2 mA Maximum Input Current
● Offset Cancellation
● Received Signal Strength Indication
● Differential CML Data Outputs
● Single +3.3V Supply
● Bare-Die Option
APPLICATIONS
● SONET OC-48● SDH STM-16
● APD Preamplifier-Receivers
● PIN Preamplifier-Receivers
DESCRIPTION
It is very power efficient and dissipates less than 83 mW (typical). It is characterized for operations from –40°C to 85°C. AVAILABLE OPTIONS TA –40°C to 85°C DIE ONET2511TAY DETAILEDDESCRIPTION
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.