AAT2073B2 ASB | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 11
Technical content
1/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2 1. Product Overview
1.1 General Description
The AAT2073B2 is a GaAs MMIC two bit positive control digital attenuator. The device operates from DC to 2700 MHz with a control and supply voltage of +3 V or +5 V. The AAT207 3B2 has LSB of 3 dB and a total attenuation of 9dB. The AAT2073B2 is composed of two cascade fixed attenuators. The states of attenuator are controlled by the logic level voltage. The attenuator bit values are 3 dB (LSB), 6 dB for a total attenuation of 9 dB. Attenuation accuracy is ±(0.15 dB + 3 % of attenuation setting) @ DC~1200 MHz.
1.2 Features
75 Ω Impedance Attenuation: 9 dB with 3 dB LSB Attenuation Accuracy: ± (0.15 dB + 3 % of Atten. setting) @DC~1200 MHz
1.3 Applications
Telecommunication System CATV and FTTH
1.4 Package Profile & RoHS Compliance
AAT2073B2 Preliminary Data Sheet 75Ω Digital Attenuator 2-Bit 9 dB DC~2700 MHz UQFN-14L, 2.0x2.0 mm2, surface mount RoHS-compliant AAT2073B2 Block Diagram (X-ray view)
2/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2 2. Summary on Product Performances
2.1 Electrical Specifications
Supply voltage = +5 V, TA = +25 C, ZO = 75 Parameter Test Condition Min Typ Max Unit Reference Insertion Loss (IL)
50 MHz
1200 MHz
2000 MHz
2700 MHz
0.3 0.7 0.8 2.1 - dB Attenuation Accuracy 1) DC – 1200 MHz DC – 2700 MHz ±(0.15 dB + 3% of attenuation setting) ±(0.5 dB + 10% of attenuation setting) Return Loss DC – 1200 MHz DC – 2700 MHz 15 - dB Switching Characteristics: Rise/fall Time On/off Time (10% to 90% RF) (50% Vctrl to RF) 300 320 ns Input P1dB
- dBm IIP3 2)
- dBm IIP2 2) 50 MHz
860 MHz - 60
Supply Voltage (Vs) +3 +5 - V Control Voltage High Low Vs-0.5 Vs +0.5 V Current 600 uA 1) Attenuation accuracy are calculated at any bit or combination 2) IIP3 and IIP2 are measured with two tones at an input power of +0 dBm/tone separated by 6 MHz.
2.2 Truth Table
3/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2
2.3 Pin Configuration
Pin Description Simplified Outline 1, 2, 4, 6, 8, 10, 11 No connection
3 RF1, RF port
9 RF2, RF port
5, 7 RF GND 12 Vs, DC power supply voltage. 13 V2, DC control voltage. Controls 6 dB attenuation state. 14 V1, DC control voltage. Controls 3 dB attenuation state. Note: Backside metal paddle is DC ground.
2.4 Absolute Maximum Ratings
Parameters Max. Ratings Operation Case Temperature -40 to 85 C Storage Temperature -65 to 150 C Device Voltage +7 V Input RF Power +27 dBm @ 50 MHz +22 dBm @ 1200 MHz +15 dBm @ 2700 MHz
2.5 Moisture Sensitivity Level
Level 3 at 260 °C reflow (Intentionally Blanked)
4/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2 PCB Information Material FR4 Thickness (mm) 0.8 Size (mm) 25x50 EB No. EB-2x2-QFN14_ATT01 3. Application: DC ~ 1200 MHz (Vs = +5 V, 75 Ω)
3.1 Application Circuit & Evaluation Board
Symbol Value Size Description Manufacturer AAT2073B2 - - 2-Bit digital attenuator ASB C1, C4 1 F 0402 DC blocking capacitor Murata C2, C3 1 F 0402 Bypass capacitor Murata C5 10 F 0805 Decoupling capacitor Murata Note: Bypass capacitors (C2 and C3) should be close to the RF GND(pin 5 and pin 7).
5/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2
3.2 Plot of Performances
Insertion loss Normalized attenuation all states Input return loss over all states Output return loss over all states
6/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2 Step error vs. frequency over all states IIP3 vs. Frequency over all states IIP2 vs. Frequency over all states Step error vs. frequency over all states
7/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2 PCB Information Material FR4 Thickness (mm) 0.8 Size (mm) 25x50 EB No. EB-2x2-QFN14_ATT01 4. Application: DC ~ 2700 MHz (Vs = +5 V, 75 Ω)
4.1 Application Circuit & Evaluation Board
Symbol Value Size Description Manufacturer AAT2073B2 - - 2-Bit digital attenuator ASB C1, C4 1 F 0402 DC blocking capacitor Murata C2, C3 1 F 0402 Bypass capacitor Murata C5 10 F 0805 Decoupling capacitor Murata Note: Bypass capacitors (C2 and C3) should be close to the RF GND(pin 5 and pin 7).
8/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2
4.2 Plot of Performances
Insertion loss Normalized attenuation all states Step error vs. frequency over all states Input return loss over all states Output return loss over all states IIP3 vs. Frequency over all states
9/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2 5. Package Outline (UQFN-14L, 2.0x2.0x0.4 mm3) 6. Surface Mount Recommendation (In mm) Symbols Dimensions (In mm) MIN NOM MAX A 0.35 - 0.40 A1 0.00 - 0.05 A2 0.223 - 0.273 A3 - 0.127REF - b 0.15 0.20 0.25 D 1.95 2.00 2.03 E 1.95 2.00 2.03 D1 - 1.00BSC - E1 - 1.00BSC - e1 - 0.40BSC - e2 - 0.45BSC - L 0.13 0.18 0.23 R - 0.125BSC - θ -12 - 0 Burr 0.00 0.03 0.06 NOTE 1. Recommended is that the ground via holes be placed on the bottom of the exposed pad of the device for better RF and thermal performance, as shown in the drawing at the left side
10/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2 7. Tape and Reel Information
7.1 UQFN-14L Package
11/11 ASB Inc. sales@asb.co.kr June 2017 AAT2073B2 8. Recommended Soldering Reflow Profile (End of Datasheet) Copyright 2017 ASB Inc. All rights reserved. Datasheet subject to change without notice. ASB assumes no responsibility for any errors which may appear in this datasheet. No part of the datasheet may be copied or reproduced in any form or by any means without the prior written consent of ASB. 20~40 sec 260 C 200 C 150 C 60~180 sec Ramp-up (3 C/sec) Ramp-down (6 C/sec)