AT90-1283 MACOM | Alldatasheet
Document overview
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- PDF pages: 5
Technical content
Features
n Attenuation: 0.5 dB Steps to 15.5 dB n Single Positive Supply n Contains Internal DC to DC Converter n Low DC Power Consumption n Small Footprint, JEDEC Package n Integral TTL Driver n 50 ohm Impedance
Description
M/A-COM's AT 90-1283 is a GaAs FET 5 -bit dig ital attenuator with integral TTL driver. Step size is 0.5 dB providing a 15.5 dB total attenuation range. This device is in a n FQFP-N plastic surface mount package. The AT 90- 1283 is ideally suited for use where accuracy, fast speed, very low power consumption and low costs are required.
Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 3.5 GHz AT90-1283 Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. V 4.00 Absolute Maximum Ratings 8 Parameter Absolute Maximum Max. Input Power
0.05 GHz
0.5 - 3.5 GHz +27 dBm +34 dBm +Vcc +5.5V Logic Voltages 9 -0.5 to +Vcc + 0.5V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +125°C 8. Operation of this device above any one of these parameters may cause permanent damange. 9. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. Recommended PCB Layout 7 Truth Table 0 = TTL Low; 1 = TTL High Pin Configuration Pin # Function Pin # Function
1 GND 17 NC
2 C8 18 NC
3 C4 19 +Vcc2
4 C2 20 NC
5 C1 21 Cp4
6 C0.5 22 NC
7 GND 23 Cp4
8 NC 24 NC
9 NC 25 -Vee3,5
10 NC1 26 GND
11 GND 27 RF2
12 RF1 28 GND
13 GND 29 NC1
14 NC 30 -Vee3,5
15 NC 31 NC
16 NC 32 +Vcc2,6
- Pins 10 & 29 must be isolated 2. Pin 19 must be connected to Pin 32. 3. Pin 25 must be connected to Pin 30. 4. .01 µF cap must be between pins 21 & 23. 5. -Vee produced internally and requires a .1 µF cap to GND. 6. +Vcc requires a .1 µF cap to GND. C8 C4 C2 C1 C0.5 Attenuation 0 0 0 0 0 Loss, Reference 0 0 0 0 1 0.5 dB 0 0 0 1 0 1.0 dB 0 0 1 0 0 2.0 dB 0 1 0 0 0 4.0 dB 1 0 0 0 0 8.0 dB 1 1 1 1 1 15.5 dB 7. Application Note C2083 is available on line at www.macom.com
Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 3.5 GHz AT90-1283 Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. V 4.00 Typical Performance Curves Attenuation Error, 1 dB Bit Attenuation Error, 0.5 dB Bit Attenuation Error, 2 dB Bit Attenuation Error, 4 dB Bit -1.0 -0.5 0.0 0.5 1.0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) Error (dB) -1.0 -0.5 0.0 0.5 1.0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) Error (dB) -1.0 -0.5 0.0 0.5 1.0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) Error (dB) -0.5 0.0 0.5 1.0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) Error (dB) VSWR @ Insertion Loss Insertion Loss 1.0 1.5 2.0 2.5 3.0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) Loss (dB) 1.00 1.25 1.50 1.75 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) VSWR Ratio Input Output
Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 3.5 GHz AT90-1283 Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. V 4.00 Typical Performance Curves Attenuation Error, 8 dB Bit Attenuation Error, Max. Attenuation -0.5 0.0 0.5 1.0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) Error (dB) -1.0 0.0 1.0 2.0 3.0 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) Error (dB) VSWR, 1 dB Bit VSWR, 0.5 dB Bit VSWR, 2 dB Bit VSWR, 4 dB Bit 1.0 1.2 1.4 1.6 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) VSWR Ratio Input Output 1.0 1.2 1.4 1.6 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) VSWR Ratio Input Output 1.0 1.2 1.4 1.6 1.8 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) VSWR Ratio Input Output 1.0 1.2 1.4 1.6 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) VSWR Ratio Input Output
Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 3.5 GHz AT90-1283 Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. V 4.00 Typical Performance Curves
Ordering Information
AT90-1283TR Tape and Reel (1K Reel) AT90-1283-TB Units Mounted on Test Board VSWR, 8 dB Bit VSWR, Maximum Attenuation 1.0 1.2 1.4 1.6 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) VSWR Ratio Input Output 1.0 1.2 1.4 1.6 1.8 0 500 1000 1500 2000 2500 3000 3500 Frequency (MHz) VSWR Ratio Input Output