AZ88923 High Speed Limiting Post Amplifier www.azmicrotek.com DESCRIPTION FEATURES The AZ88923 is a limiting post amplifier usable at data rates up to 2.5Gbps. It is ideal for use as a post amplifier following a transimpedance amplifier. • • • • The AZ88923 contains a programmable loss of signal detect function to determine when the input signal has been lost. This information can be used with the EN input pin to disable the output under LOS conditions. The • • detect threshold can be set with a resistor divider between VCC and VREF. The LOS output is an open drain compatible with CMOS and TTL. Up to 2.5Gbps operation Differential PECL Inputs Differential PECL Outputs Open Drain TTL/CMOS LOS output TTL/CMOS Enable input High Speed SiGe Process The outputs produce standard PECL 100K voltage compensated levels. BLOCK DIAGRAM APPLICATIONS • General applications PACKAGE AVAILABILITY • • Order Number 1 AZ88923U MSOP10 Green/RoHS Compliant/Pb-Free Package Marking MSOP10 AZ889232 1 Tape & Reel - Add 'R1' at end of order number for 7in (1k parts), 'R2' (2.5k) for 13in 2 See www.azmicrotek.com for date code format www.azmicrotek.com +1-480-962-5881 Request a Sample 1630 S Stapley Dr, Suite 127 Mesa, AZ 85204 USA May 2012, Rev 2.0 Arizona Microtek, Inc. AZ88923 High Speed Limiting Post Amplifier PIN DESCRIPTION AND CONFIGURATION Table 1 - Pin Description Pin Name Type Function 1 EN Input Output Enable 2 D Input Data Input 3 D Input Data Input 4 VREF Input Select Input 5 6 7 LOSLVL GND LOS Input Power Output LOS Threshold Ground LOS Output 8 Q Output PECL Output 9 10 Q VCC Output Power PECL Output Positive Supply EN 1 D 2 D 3 MSOP10 10 VCC 9 Q 8 Q VREF 4 7 LOS LOSLVL 5 6 GND Figure 1 - Pin Configuration for MSOP10 www.azmicrotek.com +1-480-962-5881 Request a Sample 2 May 2012, Rev 2.0 Arizona Microtek, Inc. AZ88923 High Speed Limiting Post Amplifier ENGINEERING NOTES 0.1µ F DIN From Transimpedance Amplifier /DIN 0.1µ F 50 Ω 50 Ω VREF 0.1µ F Figure 2 - Differential Input Configuration VCC > 4.7kΩ LOS Figure 3 - LOS Output VCC LOS LVL = VCC − 1.32V + R2 *1.32V R1 + R2 R1 R1 + R2 ≥ 2.6kΩ LOSLVL R2 VREF Figure 4 - LOSLVL Circuit www.azmicrotek.com +1-480-962-5881 Request a Sample 3 May 2012, Rev 2.0 Arizona Microtek, Inc. AZ88923 High Speed Limiting Post Amplifier PERFORMANCE DATA Table 2 – Absolute Maximum Ratings Absolute Maximum Ratings are those values beyond which device life may be impaired. Symbol Characteristic Condition Rating Unit VCC DC Supply Voltage Referenced to GND 0 to +4.5 V VI Input Voltage In Free Air 0 to VCC V VO Output Voltage VCC-2V to VCC V TA Operating Temperature Range -40 to +85 °C TSTG Storage Temperature Range -65 to +150 °C ESDHBM Human Body Model 2500 V ESDMM Machine Model 200 V ESDCDM Charged Device Model 2500 V Table 3 - DC Characteristics DC Characteristics (VCC = 3.0V to 3.6V, RLOAD=50Ω to VCC-2V) Symbol -40 °C Characteristic Min Typ 0 °C Max Min Typ 25 °C 85 °C Max Min Typ Max Min Typ Unit Max VOH Output HIGH Voltage VCC1085 VCC880 VCC1025 VCC880 VCC1025 VCC955 VCC880 VCC1025 VCC880 mV VOL Output LOW Voltage VCC1830 VCC1555 VCC1810 VCC1620 VCC1810 VCC1705 VCC1620 VCC1810 VCC1620 mV VIH Input HIGH Voltage 2 2 2 2 V VIL Input LOW Voltage 0.8 0.8 0.8 0.8 V VOL LOS Output LOW Voltage2 VREF Reference Voltage VCC1.38 VCC1.26 VCC1.38 VCC1.26 VCC1.38 VCC1.26 VCMR Common Mode Range GND +2 VCC GND +2 VCC GND +2 VCC IIH Input HIGH Current 0.5 1 IEE Power Supply Current 1 No Output Load 2 IOL = +2mA www.azmicrotek.com +1-480-962-5881 Request a Sample 0.5 100 100 40 40 0.5 V VCC1.38 VCC1.26 V GND +2 VCC V 100 100 µA 40 45 mA 0.5 30 4 May 2012, Rev 2.0 Arizona Microtek, Inc. AZ88923 High Speed Limiting Post Amplifier Table 4 - AC Characteristics AC Characteristics (VCC = 3.0V to 3.6V, RLOAD=50Ω to VCC-2V) Symbol Characteristic VID Input Voltage Range tr / tf Rise/Fall Time VOD -40 °C Min 5 Typ 0 °C Max Min 1800 5 150 Typ 25 °C Max Min 1800 5 Typ 150 600 SE - VID - 5mVp-p 200 LOS Hysteresis tOFFL LOS Release Time Min Input 0.5 tOFFH LOS Release Time Max Input tONL LOS Assert Time VSR LOS Sensitivity Range www.azmicrotek.com +1-480-962-5881 Request a Sample 2 5 8 8 Min 1800 5 8 0.5 0.1 0.5 0.5 0.5 0.5 5 50 2 5 Typ Max Unit 1800 mV 150 ps mVpp 4.6 50 2 Max 150 Diff - VID - 15mVp-p HYS 85 °C 8 dB 0.5 0.5 µs 0.1 0.5 0.5 µs 0.2 0.5 0.5 µs 50 mVpp 50 2 5 5 May 2012, Rev 2.0 Arizona Microtek, Inc. AZ88923 High Speed Limiting Post Amplifier PACKAGE DIAGRAM MSOP10 Green/RoHS compliant/Pb-Free MSL=1 Arizona Microtek, Inc. reserves the right to change circuitry and specifications at any time without prior notice. Arizona Microtek, Inc. makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Arizona Microtek, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Arizona Microtek, Inc. does not convey any license rights nor the rights of others. Arizona Microtek, Inc. products are not designed, intended or authorized for use as components in systems intended to support or sustain life, or for any other application in which the failure of the Arizona Microtek, Inc. product could create a situation where personal injury or death may occur. Should Buyer purchase or use Arizona Microtek, Inc. products for any such unintended or unauthorized application, Buyer shall indemnify and hold Arizona Microtek, Inc. and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Arizona Microtek, Inc. was negligent regarding the design or manufacture of the part. www.azmicrotek.com +1-480-962-5881 Request a Sample 6 May 2012, Rev 2.0