Digital Attenuator, 4 Bit, Single Control, 15 dB 0.5 - 2.0 GHz AT-226 AT-226 Digital Attenuator, 4 Bit, Single Control, 15 dB 0.5 - 2.0 GHz Features • • • • TSSOP-16 Single Control CMOS logic for each bit Attenuation: 1 dB steps to 15 dB Low DC Power Consumtion: 50 uW Low Cost Plastic TSSOP - 16 Package PIN 16 .037 .033 0,95 0,85 .256 .246 6,5 6,25 Description The M/A-COM AT-226 is a 4 bit, 1 dB step GaAs MMIC digital attenuator in a low cost TSSOP-16 surface mount plastic package. The AT-226 is ideally suited for use where high accuracy, very low power consumption and low intermodulation products are required. Typical applications include radio, cellular, wireless LANs, GPS equipment and other gain/level control circuits. .177 .169 4,5 4,29 PIN 1 .169 BSC 4,5 .201 .193 5,11 4,9 The AT-226 is fabricated using mature 1 micron GaAs MESFET process. The process features full chip passivation for increased performance and reliability. PIN Configuration 1,2 Functional Schematic Vs RF1 GND GND GND GND GND GND RF2 P IN 1 6 Pin No. 1,2,7,8 3 4 5 6 9 10,11,12,13,14,15 16 Truth Table 8 4 2 1 P IN 1 GND GND VC1 VC2 VC3 VC4 GND GND 1. Required external blocking caps shown 2. VS can be applied at RF1 or RF2 using a 10KΩ or greater pull-up resistor. VC1 1 1 1 1 0 0 VC2 1 1 1 0 1 0 Function GND VC1 VC2 VC3 VC4 RF2 GND RF1 Description RF Ground Control 1 Control 2 Control 3 Control 4 RF in/out RF Ground RF in/out 1, 2, 3 VC3 1 1 0 1 1 0 VC4 1 0 1 1 1 0 Attenuation (dB) Reference I.L. 1 2 4 8 15 1. Logic 0 = 0 + 0.2 V 2. Logic 1 = +5 V @ 30 µA max. current total 3. VS = +5 V V3.00 M/A-COM Division of AMP Incorporated 3 North America: Tel. (800) 366-2266, Fax (800) 618-8883 3 Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087 3 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 www.macom.com AMP and Connecting at a Higher Level are trademarks. Specifications subject to change without notice. Digital Attenuator, 4 Bit, Single Control, 15 dB 0.5 - 2.0 GHz AT-226 Electrical Specifications at TA = +25°C Parameter Reference Insertion Loss Test Conditions 0.5 - 1.0 GHz 1.0 - 2.0 GHz 0.5 - 1.0 GHz 1.0-2.0 GHz 0.5 - 2.0 GHz Attenuation Accuracy VSWR Trise,Tfall Ton, Toff P1dB IP2 Input Power Measured Relative to Input Power Two Tone input up to 5dBm, 5MHz Spacing Measured Relative to Input Power Two Tone input up to 5dBm, 5MHz Spacing IP3 Units dB dB Min. Typ. 1.3 1.0 Max. 1.6 1.3 ±(0.25 dB + 5% of Attenuation setting in dB) dB ±(0.4 dB + 5% of Attenuation setting in dB) dB >0.5 GHz >0.5GHz µs µs dBm dBm 1.3:1 2.5 1.0 24 80 >0.5GHz dBm 47 1.8:1 Typical Performance Curves 16 Relative Attenuation 12 10 IL(dB) ATTENUATION (dB) 14 8 6 4 2 0 0.5 1 1.5 2 2.5 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 Insertion Loss +85°C -40°C +25°C 0.5 3 1 1.5 2 FREQUENCY (GHz) FREQUENCY (GHz) 15dB TWC* for all states 2, 4dB 0.5 1 3 1 Input VSWR VSWR VSWR 1 2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 2.5 1.5 2 2.5 FREQUENCY (GHz) 1. TWC = Typical worst case over all states 3 2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 Output VSWR TWC* for all states 15dB 2, 4dB 0.5 1 1.5 2 FREQUENCY (GHz) 2.5 3 1. TWC = Typical worst case over all states V3.00 M/A-COM Division of AMP Incorporated 3 North America: Tel. (800) 366-2266, Fax (800) 618-8883 3 Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087 3 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 www.macom.com AMP and Connecting at a Higher Level are trademarks. Specifications subject to change without notice. Digital Attenuator, 4 Bit, Single Control, 15 dB 0.5 - 2.0 GHz AT-226 0.15 0.1 0.05 0 -0.05 -0.1 -0.15 -0.2 -0.25 Delta ATT +25°C to -40°C 8dB 4dB 2dB 1dB Attenuation Accuracy vs Frequency 0.4 0.2 0 1dB 2dB 4dB 8dB 15dB -0.4 -0.6 1 1.5 2 FREQUENCY (GHz) 2.5 3 0.5 1 1.5 2 2.5 3 FREQUENCY (GHz) Delta ATT +25°C to+85°C Absolute Maximum Ratings 0.2 DELTA (dB) 0.6 -0.2 15dB 0.5 0.25 DEVIATION FROM NOMINAL ATTENUATION (dB) DELTA (dB) Typical Performance Curves (Cont’d) Parameter 15dB 0.15 1 Maximum Ratings Maximum Input Power 0.1 1dB 0.05 0 8dB -0.05 -0.1 0.5 1 1.5 2 +27 dBm 500 - 2000 MHz +34 dBm Control Voltage 2dB 4dB 50 MHz 2.5 FREQUENCY (GHz) 3 +8 V, -1.0 V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +150ºC 1. Exceeding these limits may cause permanent damage. V3.00 M/A-COM Division of AMP Incorporated 3 North America: Tel. (800) 366-2266, Fax (800) 618-8883 3 Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087 3 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 www.macom.com AMP and Connecting at a Higher Level are trademarks. Specifications subject to change without notice. Digital Attenuator, 4 Bit, Single Control, 15 dB 0.5 - 2.0 GHz AT-226 V3.00 M/A-COM Division of AMP Incorporated 3 North America: Tel. (800) 366-2266, Fax (800) 618-8883 3 Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087 3 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 www.macom.com AMP and Connecting at a Higher Level are trademarks. Specifications subject to change without notice.