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| Preliminary GaAs IC 5 Bit Digital Attenuator With Serial-to-Parallel Driver DC-2 GHz AA107-310 Features I Positive Voltage Operation (+5 V) I MLF 5 x 5 mm Leadless Package I Integrated Silicon Serial-to-Parallel Driver I Attenuation 0.5 dB Steps to 15.5 dB MLF 5 x 5 (-310) 0.197 (5.00 mm) BSC 0.039 (1.00 mm) MAX. PIN 1 0.187 0.001 INDICATOR (4.75 mm) BSC (0.025 mm) 32 1 0.187 (4.75 mm) BSC 0.197 (5.00 mm) BSC 12 MAX. SEATING PLANE Description The AA107-310 is a GaAs FET IC 5 bit digital attenuator with a serial-to-parallel driver packaged in a 32 leadless exposed pad plastic package. It is particularly suited at IF frequencies where high attenuation accuracy, low insertion loss and low intermodulation products are required.Typical applications include base station, wireless and RF data and wireless local loop gain control circuits. 0.122 (3.10 mm) 0.006 (0.15 mm) 0.122 (3.10 mm) 0.006 (0.15 mm) 32 1 0.138 (3.50 mm) REF. 0.019 (0.50 mm) BSC 0.138 (3.50 mm) REF. Electrical Specifications at 25C (VCC = +5 V) Parameter1 Insertion Loss3 Attenuation Range4, 5 Attenuation Accuracy4, 5 DC-1.0 GHz DC-2.0 GHz VSWR (I/O) Switching Characteristics6 Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru 0.50-2.0 GHz 0.05 GHz For Two-tone Input Power +5 dBm VLow = 0 to 0.2 V @ 20 A Max. VHigh = -5 V @ 300 A Max. 0.50-2.0 GHz 0.05 GHz +24 +17 +44 +35 DC-2.0 GHz Condition Frequency2 DC-1.0 GHz DC-2.0 GHz Min. Typ. 1.4 1.7 15.5 (0.2 + 3% of Attenuation Setting in dB) (0.4 + 3% of Attenuation Setting in dB) 1.4:1 50 100 50 +29 +22 +50 +40 1.8:1 ns ns mV dBm dBm dBm dBm Max. 1.7 2.2 Unit dB dB dB dB dB Input Power for 1 dB Compression Intermodulation Intercept Point (IP3) Control Voltages DC Electrical Characteristics at 25C (VCC = +5 V) Parameter Input Voltage High Input Voltage Low Input Leakage Current Quiescent Current Supply Voltages 1. All measurements made in a 50 system, unless otherwise specified. 2. DC = 300 kHz. 3. Insertion loss changes by 0.003 dB/C. Symbol VIH (1) VIL (0) IL ICC VCC Min. 0 Typ. 3.5 0.5 0.5 500 5.0 Max. 5.0 Unit V V A A V 4. Attenuation value referenced above insertion loss. 5. Exposed pad must be connected to RF ground to obtain specified attenuation. 6. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 3/01A 1 GaAs IC 5 Bit Digital Attenuator With Serial-to-Parallel Driver DC-2 GHz AA107-310 Typical Performance Data (VCC = +5 V) 0 1.5 1.4 1.3 1.2 8 dB -1.5 1.1 1.0 0 0.5 1.0 1.5 2.0 0 0.5 0.5 dB Ins. Loss -2.0 1 dB 1.0 1.5 2.0 4 dB -0.5 Loss (dB) VSWR -1.0 2 dB 15.5 dB Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency 0.2 VSWR vs. Frequency 4 dB 2 dB 0.5 dB Absolute Maximum Ratings Characteristic Value -0.5 to +6 V -0.5 - VCC + 0.5 V 500 mW -65C to +125C -40C to +85C Supply Voltage (VCC) Deviation from Nominal Attenuation (dB) 0 -0.2 -0.4 15.5 dB -0.6 -0.8 -1.0 0 0.5 1.0 1.5 2.0 8 dB 1 dB Input Voltage (VI) Power Dissipation (PD) Storage Temperature (TST) Operating Temperature (TOP) Surface Mount Land Pattern 5 x 5 mm MLF 32 Lead 0.020 (0.50 mm) 0.013 (0.33 mm) 0.020 (0.50 mm) Frequency (GHz) Attenuation Accuracy vs. Frequency Truth Table Serial Data Input Reset 0.5 dB 1 dB 1 1 1 1 1 1 1 0 0 1 0 0 0 0 1 X 0 0 1 0 0 0 1 X 2 dB 0 0 0 1 0 0 1 X 4 dB 0 0 0 0 1 0 1 X 8 dB 0 0 0 0 0 1 1 X J1-J2 Attenuation Insertion Loss 0.5 dB 1 dB 2 dB 4 dB 8 dB 15.5 dB Insertion Loss Dimensions in inches (mm). 0.020 (0.50 mm) 0.020 (0.50 mm) 0.122 (3.10 mm) SQ. VIL (0) = 0 to 0.5 V. VIH (1) = 3.5 to 5 V. X = Don't Care. 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 3/01A GaAs IC 5 Bit Digital Attenuator With Serial-to-Parallel Driver DC-2 GHz AA107-310 Pin Out VCC 0.01 F C1 C2 0.025 F GND VSS 0.01 F SCK SDA LE Pin 1 2-4 5 6-19 20 RST GND GND GND J2 GND GND GND GND GND GND GND GND GND GND GND Symbol SOUT GND J1 GND J2 GND RST LE SDA SCK VSS GND C2 C1 VCC Function Serial Data Output Ground RF Input/Output Ground RF Input/Output Ground Reset Latch Enable Serial Data Input Serial Clock Input Low Output Voltage Level Ground Charge Pump Capacitor Charge Pump Capacitor Supply Voltage Pin 32 Pin 1 SOUT GND GND GND J1 GND GND GND 21-23 24 25 26 27 28 29 30 31 32 Timing Diagram LE SCK SDA T1 T2 T3 T5 T4 Parameter LE Setup Time SDA Setup Time SDA Hold Time LE Hold Time Clock Period Symbol T1 T2 T3 T4 T5 Min. Typ. 15 15 10 10 60 Max. Unit ns ns ns ns ns Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 3/01A 3 |
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