ASA303A versionㅇ1.
ASA303A Data Sheet
50 ~ 1200 MHz Gain Adjustable Trans-impedance Amplifier MMIC
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
1/9
ASB Inc.
[email protected]
June 2014
ASA303A versionㅇ1.
2. Summary on Product Performances
2.1 Typical Performance
Supply voltage = +5 V, TA = +25 C, ZO = 75
Parameters
Test Conditions
Gain Max
50 ~ 1200 MHz, Vctrl = 0 V
Gain Adjustable Range Gain Flatness Output Return Loss
Over Vctrl = 0.0 ~ 3.3 V
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
50 ~ 1200 MHz, over Vctrl = 0.0 ~ 3.3 V
EIN 50 ~ 1200 MHz, Vctrl = 0.0 V
CN Optical Input = +2 dBm
CSO
Optical Input = -8 dBm Optical Input = +2 dBm
CTB
Optical Input = -8 dBm Optical Input = +2 dBm
Current Consumption Vdevice = +5 V
1) For Pout = 82 dBV, 527.25 MHz of PAL 98 channels. 2) For Pout = 84 dBV, 743.25 MHz of CENELEC 42 channels.
Min 33
220
2.2 Product Specification
Supply voltage = +5 V, TA = +25 C, ZO = 75
Parameter
Frequency Gain Max. Output Return Loss Current Consumption
Min 33 220
2.3 Application Block Diagram
Typ
30 1.55 1.65 1.65
521), 532) 671), 652) 661), 722) 671), 672) 661), 662) 245
Max 36
-10 7.8
270
Typ Max
500 36 -10
245 270
Attenuation
Control Voltage (VCtrl)
Matching Circuit
Voltage
TIA
Controlled
Amp.
Attenuator
ASA303A
Matching Circuit
1:1
Vdevice
Units dB dB dB dB dB dB pA/rtHz dBc dBc dBc dBc dBc mA
Unit MHz dB dB mA
2/9
ASB Inc.
[email protected]
June 2014
ASA303A versionㅇ1.
2.4 Absolute Maximum Ratings
Parameters Operation Case Temperature Storage Temperature Device Voltage Operation Junction Temperature Input RF Power (CW) Maximum Current
Max. Ratings
-40 to 85 C -40 to 150 C +6 V +160 C +20 dBm 300 mA
2.5 Thermal Resistance
Symbol Rth
Description Thermal resistance from junction to lead
Typ Unit 22 C/W
2.6 Pin Descriptions
24 23 22 21 20 19
1 18
2 17
3
Voltage
16
TIA
Control
AMP
Attenuator.