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1/9 ASB Inc. sales@asb.co.kr June 2014 ASA303A ㅇ version 1. 1. Product Overview
1.1 General Description
ASA303A, a trans-impedance amplifier (TIA) with voltage controlled attenuator, has a high linearity and low noise over a wide range of frequency up to 1 .2 GHz, being suitable for use in the FTTH, optical receiver, distribution amplifiers, and drop -in amplifiers of CATV systems. The amplifier is available in a QFN24 plastic encapsulated package and passes through the stringent DC, RF, and reliability tests.
1.2 Features
Operating Frequency at 50 ~ 1200 MHz Optical Input from -8 dBm to +2 dBm Trans-impedance Gain Adjustable from 35 dB to 5 dB @ Vctrl = 0.0 ~ 3.3 V Gain Flatness: ±1.55 dB over Vctrl = 0.0 ~ 3.3 V @ 50 ~ 860 MHz, ±1.65 dB over Vctrl = 0.0 ~ 3.3 V @ 50 ~ 1000 MHz, ±1.65 dB over Vctrl = 0.0 ~ 3.3 V @ 50 ~ 1200 MHz Output Power: 84 dBV @ CENELEC-42, 82 dBV @ PAL-98 Single +5 V, 245 mA
1.3 Applications
FTTH Optical Receiver Distribution Amplifier Drop-in Amplifier
1.4 Package Profile & RoHS Compliance
QFN24, 4x4 mm2, surface mount RoHS-compliant ASA303A Data Sheet 50 ~ 1200 MHz Gain Adjustable Trans-impedance Amplifier MMIC
2/9 ASB Inc. sales@asb.co.kr June 2014 ASA303A ㅇ version 1. 2. Summary on Product Performances
2.1 Typical Performance
Supply voltage = +5 V, TA = +25 C, ZO = 75 Parameters Test Conditions Min Typ Max Units Gain Max 50 ~ 1200 MHz, Vctrl = 0 V 33 36 dB Gain Adjustable Range Over Vctrl = 0.0 ~ 3.3 V 30 dB Gain Flatness Over Vctrl = 0.0 ~ 3.3 V @ 50 ~ 860 MHz Over Vctrl = 0.0 ~ 3.3 V @ 50 ~ 1000 MHz Over Vctrl = 0.0 ~ 3.3 V @ 50 ~ 1200 MHz 1.55 1.65 1.65 dB dB dB Output Return Loss 50 ~ 1200 MHz, over Vctrl = 0.0 ~ 3.3 V -10 dB EIN 50 ~ 1200 MHz, Vctrl = 0.0 V 7.8 pA/rtHz CN Optical Input = +2 dBm 521), 532) dBc CSO Optical Input = -8 dBm 671), 652) dBc Optical Input = +2 dBm 661), 722) dBc CTB Optical Input = -8 dBm 671), 672) dBc Optical Input = +2 dBm 661), 662) dBc Current Consumption Vdevice = +5 V 220 245 270 mA 1) For Pout = 82 dBV, 527.25 MHz of PAL 98 channels. 2) For Pout = 84 dBV, 743.25 MHz of CENELEC 42 channels.
2.2 Product Specification
Supply voltage = +5 V, TA = +25 C, ZO = 75
2.3 Application Block Diagram
Parameter Min Typ Max Unit Frequency 500 MHz Gain Max. 33 36 dB Output Return Loss -10 dB Current Consumption 220 245 270 mA Voltage Controlled Attenuator TIA Matching Circuit Amp. Matching Circuit ASA303A Vdevice Attenuation Control Voltage (VCtrl) 1 : 1
3/9 ASB Inc. sales@asb.co.kr June 2014 ASA303A ㅇ version 1.
2.4 Absolute Maximum Ratings
Parameters Max. Ratings Operation Case Temperature -40 to 85 C Storage Temperature -40 to 150 C Device Voltage +6 V Operation Junction Temperature +160 C Input RF Power (CW) +20 dBm Maximum Current 300 mA
2.5 Thermal Resistance
Symbol Description Typ Unit Rth Thermal resistance from junction to lead 22 C/W
2.6 Pin Descriptions
Pin Pin Name Description Pin Pin Name Description
1 NC No connection 14 OUT B Output B
2 TIA IN A TIA input A 15 NC No connection
3 NC No connection 16 NC No connection
4 NC No connection 17 OUT A Output A
5 TIA IN B TIA input B 18 NC No connection
6 NC No connection 19 NC No connection
7 TIA Bias B TIA VDD B 20 NC No connection
8 NC No connection 21 NC No connection
9 NC No connection 22 NC No connection
10 Vctrl Gain control voltage 23 NC No connection
11 NC No connection 24 TIA Bias A TIA VDD A
12 NC No connection 25 Paddle RF & DC Ground
13 NC No connection
24 23 22 21 20 19 (NOTE) The left schematic is the t op view of QFN24 plastic package with a circled pin 1 mark and a dotted lead & metal exposed paddle on its bottom.
4/9 ASB Inc. sales@asb.co.kr June 2014 ASA303A ㅇ version 1. 3. Application: 50 ~ 1200 MHz
3.1 Application Circuit & Evaluation Board
Vdevice = +5 V Vctrl Vdiode = +12 V RF OUT 1 : 1 ASA303A Cathode Anode Transformer Vdiode RF IN RF OUT VCTL GND http://www.asb.co.kr EB-QFN24-4x4-ASA-A12 Photodiode ASB Inc. GND VDD 1:1
5/9 ASB Inc. sales@asb.co.kr June 2014 ASA303A ㅇ version 1. Bill of Material Symbol Size Value Manufacturer ASA303A - - ASB C1, C10, C11, C12, C15, C16 1608 1.0 F MURATA C2, C3, C4, C5, C13, C14, C18 1608 0.1 F MURATA C6, C7, C8, C9 1005 0.1 F MURATA C17 2012 10 F MURATA R1, R2 1608 1.5 k Samsung R3, R4 1608 250 Samsung R5, R6 1005 510 Samsung R7, R8 1608 10 Samsung L1, L2, L3, L4 1608 1.0 H MURATA L5 1608 5.6 nH MURATA T11) SM-164 1:1 MACOM 1) MABACT0040 (Intentionally Blanked)
6/9 ASB Inc. sales@asb.co.kr June 2014 ASA303A ㅇ version 1.
3.2 Plots of Performances
Gain Flatness Deviation ( 50 ~ 1200 MHz ) Gain Flatness Deviation ( 50 ~ 1000 MHz ) Gain Flatness Deviation ( 50 ~ 860 MHz ) 0 200 400 600 800 1000 1200 Frequency (MHz) -2.5 -1.5 -0.5 0.5 1.5 2.5 Gain flatness deviation (dB) Vctrl = 0 V Vctrl = 1.02 V Vctrl = 1.06 V Vctrl = 1.09 V Vctrl = 1.13 V Vctrl = 1.18 V Vctrl = 1.22 V Vctrl = 1.28 V Vctrl = 1.34 V Vctrl = 1.41 V Vctrl = 1.49 V Vctrl = 1.59 V Vctrl = 1.73 V Vctrl = 1.92 V Vctrl = 2.22 V Vctrl = 3.30 V Vctrl = 0 V Vctrl = 3.30 V 0 200 400 600 800 1000 Frequency (MHz) -2.5 -1.5 -0.5 0.5 1.5 2.5 Gain flatness deviation (dB) Vctrl = 0 V Vctrl = 1.02 V Vctrl = 1.06 V Vctrl = 1.09 V Vctrl = 1.13 V Vctrl = 1.18 V Vctrl = 1.22 V Vctrl = 1.28 V Vctrl = 1.34 V Vctrl = 1.41 V Vctrl = 1.49 V Vctrl = 1.59 V Vctrl = 1.73 V Vctrl = 1.92 V Vctrl = 2.22 V Vctrl = 3.30 V Vctrl = 0 V Vctrl = 3.30 V 0 100 200 300 400 500 600 700 800 900 Frequency (MHz) -2.5 -1.5 -0.5 0.5 1.5 2.5 Gain flatness deviation (dB) Vctrl = 0 V Vctrl = 1.02 V Vctrl = 1.06 V Vctrl = 1.09 V Vctrl = 1.13 V Vctrl = 1.18 V Vctrl = 1.22 V Vctrl = 1.28 V Vctrl = 1.34 V Vctrl = 1.41 V Vctrl = 1.49 V Vctrl = 1.59 V Vctrl = 1.73 V Vctrl = 1.92 V Vctrl = 2.22 V Vctrl = 3.30 V Vctrl = 0 V Vctrl = 3.30 V 0 200 400 600 800 1000 1200 Frequency (MHz) -50 -40 -30 -20 -10 S22 (dB) Vctrl = 0 V Vctrl = 1.02 V Vctrl = 1.06 V Vctrl = 1.09 V Vctrl = 1.13 V Vctrl = 1.18 V Vctrl = 1.22 V Vctrl = 1.28 V Vctrl = 1.34 V Vctrl = 1.41 V Vctrl = 1.49 V Vctrl = 1.59 V Vctrl = 1.73 V Vctrl = 1.92 V Vctrl = 2.22 V Vctrl = 3.30 V Vctrl = 0 V Vctrl = 3.30 V 0 200 400 600 800 1000 1200 Frequency (MHz) Gain (dB) Vctrl = 0 V Vctrl = 1.02 V Vctrl = 1.06 V Vctrl = 1.09 V Vctrl = 1.13 V Vctrl = 1.18 V Vctrl = 1.22 V Vctrl = 1.28 V Vctrl = 1.34 V Vctrl = 1.41 V Vctrl = 1.49 V Vctrl = 1.59 V Vctrl = 1.73 V Vctrl = 1.92 V Vctrl = 2.22 V Vctrl = 3.30 V Vctrl = 0 V Vctrl = 3.30 V
7/9 ASB Inc. sales@asb.co.kr June 2014 ASA303A ㅇ version 1. 0 0.5 1 1.5 2 2.5 3 3.5 Vctrl (V) Attenuation (dB) @ 500 MHz 0 200 400 600 800 1000 1200 1400 Frequency (MHz) EIN (pA/rtHz)
8/9 ASB Inc. sales@asb.co.kr June 2014 ASA303A ㅇ version 1. 4. Package Outline (QFN24, 4.0x4.0x1.5 mm3) 5. Surface Mount Recommendation (In mm) Symbols Dimensions (In mm) MIN NOM MAX A 0.80 0.85 0.90 A1 0 0.010 0.030 A3 --- 0.20REF --- b 0.18 0.23 0.28 D 3.95 4.00 4.03 D1 --- 2.60BSC --- E 3.95 4.00 4.03 E1 --- 2.60BSC --- e --- 0.50BSC --- L 0.35 0.40 0.45 -12 --- 0 ccc --- 0.08 --- M --- --- 0.05 Burr 0 0.030 0.060 NOTE 1. The number and size of ground via holes in a circuit board is critical for thermal and RF grounding con- siderations. 2. Recommended is that the ground via holes be placed on the bottom of the exposed pad of the de- vice for better RF and thermal performance, as shown in the drawing at the left side.
9/9 ASB Inc. sales@asb.co.kr June 2014 ASA303A ㅇ version 1. 6. ESD Classification & Moisture Sensitivity Level ESD Classification HBM Class 1B Voltage Level: 750 V CAUTION: Gallium Arsenide Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be damaged by static electricity. Proper ESD control techniques should be used when handling these devices. Moisture Sensitivity Level MSL 3 at 260 C reflow 7. Recommended Soldering Reflow Profile (End of Datasheet) 20~40 sec 260 C 200 C 150 C 60~180 sec Ramp-up (3 C/sec) Ramp-down (6 C/sec)