y2 k n ew ! HMC236QS16G MICROWAVE CORPORATION GaAS MMIC SMT QPSK MODULATOR 2.4 GHz FEBRUARY 2000 V01.0300 Features General Description EXCELLENT AMPLITUDE AND PHASE BALANCE The HMC236QS16G QPSK Modulator is designed to phase-modulate an RF signal into quadrature phase states. Device input is at the RF port and output is at the LO port. The polarity of the bias current at the control ports (I and Q) defines the four phase states. Excellent amplitude and phase balance is provided by closely matched monolithic balun and diode circuits delivering 30 dB of carrier suppression in a 16lead QSOP package. The device also functions as an I/Q demodulator with data emerging from the I and Q ports when a QPSK modulated signal at the RF port is compared to a reference signal at the LO port. Except for carrier suppression, the data presented here was measured under static conditions in which a DC bias current (nominally 5 mA) is applied to the control ports. The HMC236QS16G replaces the HMC196C12. DIRECT MODULATION IN THE 2.4 GHz ISM BAND 30 dB CARRIER SUPPRESSION USE AS A MODULATOR OR DEMODULATOR SMT MODULATORS 5 Guaranteed Performance, For 5mA Bias Current, 50 Ohm System, -40 to +85 deg C Parameter Min. Frequency Band Typ. Max. 2.3 - 2.5 Insertion Loss 11 Units GHz 13 dB Input Return Loss (IN Port) 8 12 dB Output Return Loss (OUT Port) 12 15 dB Amplitude Balance 0.5 1.5 dB Phase Balance 1.5 4.0 deg Carrier Suppression (When driven with a 1 MHz square wave, 1.4 Vp-p) 25 33 dBc Input Power for 1 dB Compression 3 6 dBm I &Q Bias Current (Bias current forward biases internal Schottky diodes providing approximately 0.6 V at the control port s I & Q). 3 5 250 275 I & Q Maximum Data Rate (50 Ohm Source Impedance) 12 Elizabeth Drive, Chelmsford, MA 01824 5 - 14 Phone: 978-250-3343 Fax: 978-250-3373 10 mA MHz Web Site: www.hittite.com y2 k ne w ! HMC236QS16G MICROWAVE CORPORATION HMC236QS16G SMT QPSK MODULATOR 2.4 GHz FEBRUARY 2000 V01.0300 Insertion Loss Amplitude Balance 2 0 +90 AMPLITUDE BALANCE (dB) -5 +180 REF -10 -15 +90 -20 2.2 2.3 1 0.5 0 -0.5 -90 -1 -1.5 2.4 2.5 -2 2.2 2.6 2.3 2.4 5 INPUT RETURN LOSS (dB) PHASE BALANCE (deg.) +90 -90 2 1 0 -1 -2 +180 +180 -5 REF -10 -15 -20 -4 -5 2.2 5 0 3 -3 2.6 Input Return Loss Phase Balance 4 2.5 FREQUENCY (GHz) FREQUENCY (GHz) MODULATORS -90 +180 -90 2.3 2.4 2.5 -25 2.2 2.6 SMT INSERTION LOSS (dB) 1.5 2.3 FREQUENCY (GHz) +90 2.4 2.5 2.6 FREQUENCY (GHz) Output Return Loss OUTPUT RETURN LOSS (dB) 0 -5 REF +180 -10 -15 -20 -90 +90 -25 2.2 2.3 2.4 2.5 2.6 FREQUENCY (GHz) 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Web Site: www.hittite.com 5 - 15 y2 k n ew ! HMC236QS16G MICROWAVE CORPORATION HMC236QS16G SMT QPSK MODULATOR 2.4 GHz FEBRUARY 2000 V01.0300 Absolute Maximum Ratings Schematic I (PINS 2 or 10) 0 RF Input (IN) +20 dBm I&Q 16 mA Storage Temperature -65oC to 150oC Operating Temperature -40oC to +85oC o IN (PIN 13) OUT (PIN 4) 90 o Note the redundant I (Pins 2 or 10) and Q (Pins 7 or 15) ports Q (PINS 7 or 15) Outline Drawing SMT MODULATORS 5 1. 2. 3. MATERIAL: A) PACKAGE BODY - LOW STRESS INJECTION-MOLDED PLASTIC. 4. 5. B) LEADFRAME AND SLUG MATERIAL: COPPER ALLOY PLATING : LEAD - TIN SOLDER PLATE (LEAD AND SLUG) DIMENSIONS ARE IN INCHES (MILLIMETERS). UNLESS OTHERWISE SPECIFIED ALL TOL. ARE ±0.005(±0.13). 12 Elizabeth Drive, Chelmsford, MA 01824 5 - 16 DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15 MM PER SIDE DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25 MM PER SIDE Phone: 978-250-3343 Fax: 978-250-3373 Web Site: www.hittite.com y2 k ne w ! HMC236QS16G MICROWAVE CORPORATION HMC236QS16G SMT QPSK MODULATOR 2.4 GHz FEBRUARY 2000 V01.0300 Suggested TTL Driver for a QPSK Modulator +2.5 Vdc +5 Vdc MODULATOR I, Q PORTS .01 uF VCC VCC HC04 HCT04 *R 1 VA 0.6V TTL V Z = 2V IA GND GND .01 uF 2.2K HITTITE MODULATOR -2.5 Vdc 2) HCT04 and HC04 are QMOS HEX INVERTERS. *R1 = 300 TO 620 ± 2% SELECT R1 TO SUPPLY ± 3 TO ±6 mA TO THE IF PORT 12 Elizabeth Drive, Chelmsford, MA 01824 3) NOTE THAT A SEPARATE DRIVER CIRCUIT IS REQUIRED FOR THE I AND Q PORTS. 4) NOTE THE REDUNDANT I/Q PORTS. SMT NOTES 1) VA ALTERNATES BETWEEN ± 2.4 Vdc ± IA = 2.4 - 0.6 = ± 5 mA 360 Ω MODULATORS 5 Phone: 978-250-3343 Fax: 978-250-3373 Web Site: www.hittite.com 5 - 17