Preliminary GaAs IC 5 Bit Digital Attenuator With Serial-to-Parallel Driver DC–2 GHz AA107-310 Features MLF 5 x 5 (-310) ■ Positive Voltage Operation (+5 V) 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 ■ MLF 5 x 5 mm Leadless Package ■ Integrated Silicon Serial-to-Parallel Driver 1 0.197 (5.00 mm) BSC 0.187 (4.75 mm) BSC ■ Attenuation 0.5 dB Steps to 15.5 dB SEATING PLANE 12˚ MAX. Description 0.122 (3.10 mm) ± 0.006 (0.15 mm) 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. 32 1 0.122 (3.10 mm) ± 0.006 (0.15 mm) 0.138 (3.50 mm) REF. 0.019 (0.50 mm) BSC 0.138 (3.50 mm) REF. Electrical Specifications at 25°C (VCC = +5 V) Parameter1 Frequency2 Condition Insertion Loss3 Typ. Max. Unit DC–1.0 GHz DC–2.0 GHz Min. 1.4 1.7 1.7 2.2 dB dB DC–1.0 GHz ± (0.2 + 3% of Attenuation Setting in dB) ± (0.4 + 3% of Attenuation Setting in dB) Attenuation Range4, 5 15.5 Attenuation Accuracy4, 5 DC–2.0 GHz VSWR (I/O) DC–2.0 GHz Switching Characteristics6 1.4:1 Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru Input Power for 1 dB Compression Intermodulation Intercept Point (IP3) For Two-tone Input Power +5 dBm Control Voltages VLow = 0 to 0.2 V @ 20 µA Max. VHigh = -5 V @ 300 µA Max. dB dB dB 1.8:1 50 100 50 ns ns mV 0.50–2.0 GHz 0.05 GHz +24 +17 +29 +22 dBm dBm 0.50–2.0 GHz 0.05 GHz +44 +35 +50 +40 dBm dBm Symbol Min. Typ. Max. 3.5 5.0 0 0.5 DC Electrical Characteristics at 25°C (VCC = +5 V) Parameter Input Voltage High VIH (1) Input Voltage Low VIL (0) Input Leakage Current Quiescent Current Supply Voltages 1. All measurements made in a 50 Ω system, unless otherwise specified. 2. DC = 300 kHz. 3. Insertion loss changes by 0.003 dB/°C. Unit V V IL ±0.5 µA ICC 500 µA VCC 5.0 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 [email protected] • 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) 1.5 0 1.4 VSWR Loss (dB) -0.5 -1.0 1.3 2 dB 15.5 dB 1.2 8 dB -1.5 0.5 dB 1.1 4 dB Ins. Loss 1.0 -2.0 0 0.5 1.0 1.5 0 2.0 0.5 1.0 1.5 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency VSWR vs. Frequency 0.2 Deviation from Nominal Attenuation (dB) 1 dB 4 dB 0.5 dB 2 dB Absolute Maximum Ratings Characteristic 0 Value Supply Voltage (VCC) 8 dB -0.2 Input Voltage (VI) 1 dB -0.5 to +6 V -0.5 – VCC + 0.5 V Power Dissipation (PD) -0.4 15.5 dB -0.6 2.0 500 mW Storage Temperature (TST) -65°C to +125°C Operating Temperature (TOP) -40°C to +85°C -0.8 Surface Mount Land Pattern -1.0 0.5 0 1.0 1.5 2.0 5 x 5 mm MLF 32 Lead Frequency (GHz) 0.020 (0.50 mm) 0.013 (0.33 mm) Attenuation Accuracy vs. Frequency 0.020 (0.50 mm) Truth Table Serial Data Input Reset 0.5 dB 1 dB 2 dB 4 dB 8 dB J1–J2 Attenuation 1 0 0 0 0 0 Insertion Loss 1 1 0 0 0 0 0.5 dB 1 0 1 0 0 0 1 dB 1 0 0 1 0 0 2 dB 1 0 0 0 1 0 4 dB 1 0 0 0 0 1 8 dB 1 1 1 1 1 1 15.5 dB 0 X X X X X Insertion Loss 0.122 (3.10 mm) SQ. 0.020 (0.50 mm) 0.020 (0.50 mm) Dimensions in inches (mm). 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 [email protected] • 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 RST GND GND GND J2 GND GND GND GND GND GND GND GND GND GND GND Pin 32 Pin 1 SOUT GND GND GND J1 GND GND GND VCC 0.01 µF C1 C2 0.025 µF GND VSS 0.01 µF SCK SDA LE Pin Out AA107-310 Pin Symbol Function 1 SOUT Serial Data Output 2–4 GND Ground 5 J1 RF Input/Output 6–19 GND Ground 20 J2 RF Input/Output 21–23 GND Ground 24 RST Reset 25 LE Latch Enable 26 SDA Serial Data Input 27 SCK Serial Clock Input 28 VSS Low Output Voltage Level 29 GND Ground 30 C2 Charge Pump Capacitor 31 C1 Charge Pump Capacitor 32 VCC Supply Voltage Timing Diagram LE SCK SDA T1 T2 Parameter T3 T5 T4 Symbol Min. Typ. Max. Unit LE Setup Time T1 15 ns SDA Setup Time T2 15 ns SDA Hold Time T3 10 ns LE Hold Time T4 10 ns Clock Period T5 60 ns Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 3/01A 3