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VG112 Datasheet(PDF) 1 Page - WJ Communication. Inc. |
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VG112 Datasheet(HTML) 1 Page - WJ Communication. Inc. |
1 / 5 page Specifications and information are subject to change without notice WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com Page 1 of 5 December 2006 VG112 PCS/UMTS-band Variable Gain Amplifier Product Features • 1800 – 2200 MHz bandwidth • 25 dB Gain at 1.9 GHz • 28 dB Attenuation Range • +46 dBm Output IP3 • +30 dBm P1dB • Constant IP3 & P1dB over attenuation range • +5V Single voltage supply • Pb-free / green / RoHS-compliant 6x6 mm QFN package • MTTF > 100 years Applications • Xmit & Rcv AGC circuitry for mobile infrastructure Product Description The VG112 is a PCS / UMTS-band high dynamic range variable gain amplifier (VGA) housed in a low profile Pb-free / green / RoHS-compliant surface-mount leadless QFN package that measures 6 x 6 mm square. The +30 dBm output compression point and +46 dBm output intercept point of the amplifier are maintained over the entire attenuation range, making the VG112 ideal for use in transmitter and receiver AGC circuits. The high gain of the dual-stage amplifier allows for more integration in a transceiver board while requiring minimal printed circuit board space. Superior thermal design allows the product to have a minimum MTTF rating of 100 years at a mounting temperature of +85 ºC. All devices are 100% RF & DC tested and packaged on tape and reel for automated surface- mount assembly. Functional Diagram Specifications (1) Parameter Units Min Typ Max Conditions Operational Bandwidth MHz 1800 2200 Test Frequency MHz 2140 See note 1 Gain at min. attenuation dB 20.5 23 Input Return Loss dB 18 Output Return Loss dB 8.2 Output P1dB dBm +30 Output IP3 dBm +43 +46 See note 2 Noise Figure at min. attenuation dB 8 VCTRL = 0 V Gain Variation Range dB 23.5 28 See note 3 Gain Variation Control Voltage, VCTRL V 0 4.5 See note 1 Supply Voltage, VCC V +5 Operating Amplifier Current Range mA 350 415 475 Pin 25 Gain Control Pin Current mA 20 VCTRL = 4.5 V. See note 1. 1. Test conditions unless otherwise noted: 25 ºC, Vcc = +5 V in a tuned application circuit. Vctrl is the control voltage through a 220 Ω dropping resistor as shown in the same application circuit. 2. 3OIP measured with two tones at an output power of +15 dBm/tone separated by 1 MHz. The suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule. 3. The gain variation range is measured as the difference in gain with Vctrl = 0V and Vctrl = 4.5V at 2.14 GHz. Absolute Maximum Rating Parameter Rating Operating Case Temperature -40 to +85 °C Storage Temperature -55 to +125 °C Pin 5 (Gain Control) Current 30 mA Junction Temperature +250 °C Operation of this device above any of these parameters may cause permanent damage. Ordering Information Part No. Description VG112-G PCS/UMTS-band Variable Gain Amplifier (lead-free/green/RoHS-compliant QFN package) VG112-PCB 2140 MHz Fully Assembled Application Board 8 9 10 11 12 13 14 7 6 5 4 3 2 1 15 16 17 18 19 20 21 GND Vcc1 GND RF OUT / Vcc2 GND GND GND GND GND RF IN GND GND GND Variable Attenuator Amp 28 27 26 25 24 23 22 RF OUT / Vcc2 |
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