CHE1270-QAG RoHS COMPLIANT 12-40GHz Wide Band Detector GaAs Monolithic Microwave IC in SMD leadless package Description UMS E1270 YYWW The CHE1270-QAG is a detector that integrates a matched detector diode (Vdet) and a reference diode (Vref). It is designed for a wide range of applications where an accurate transmitted power control is required, typically commercial communication systems. CHE1270 RF IN Matching The circuit is manufactured with a Schottky diode MMIC process, 1µm gate length, via holes through the substrate and air bridges. Vdet It is available in leadless SMD package. Vref DC Transmitted power detection (mV) Main Features ■ Wide frequency range: 12-40GHz ■ 30dB dynamic range ■ ESD protected ■ 16L-QFN3x3 SMD package Vdetect= Vref-Vdet (mV) 10000 12 GHz 17GHz 22GHz 32GHz 37GHz 40GHz 27GHz 1000 100 10 1 Main Characteristics -20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 Input power (dBm) Tamb = +25°C, VDC = +4.5V Symbol Parameter Min Typ 12 Max Unit 40 GHz F Frequency range Dr Dynamic range 30 dB RL Return Loss -10 dB ESD Protection: Electrostatic discharge sensitive device. Observe handling precautions! Ref. : DSCHE1270-QAG8205 - 25 Jun 08 1/8 United Monolithic Semiconductors S.A.S. Route Départementale 128 - B.P.46 - 91401 Orsay Cedex France Tel. : +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 CHE1270-QAG 12-40GHz Detector Electrical Characteristics (1) Tamb = +25°C, VDC = +4.5V Symbol Parameter Min F Frequency range Dr Dynamic range (for Input Power detection) IPd Input Power detection Typ Max Unit 40 GHz 12 30 -15 Vdetect Voltage detection Vref – Vdet dB 15 dBm 10 to 2000 mV Return Loss (12 – 36GHz) -10 dB Return Loss (36 – 40GHz) -8 dB VDC Bias Voltage 4.5 V IDC Bias Current 70 µA from IPd_min to IPd_max RL (1) These values are representative of onboard measurements as defined on the drawing 96272-B (page 8) with 27kΩ resistor in parallel on Vdet and Vref pads. Absolute Maximum Ratings (1) Tamb = +25°C Symbol VDC P_max Parameter Values Unit Bias voltage 6 V Maximum Power 18 dBm Top Operating temperature range -40 to +85 °C Tstg Storage temperature range -55 to +125 °C (1) Operation of this device above anyone of these parameters may cause permanent damage. Ref. : DSCHE1270-QAG8205 - 25 Jun 08 2/8 Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 CHE1270-QAG 12-40GHz Detector Typical Measured Performance Tamb = +25°C, Vdc = +4.5V, 27k Ω resistor in parallel on Vdet and Vref pads (see notes, page 7). - Return Loss measurement in the package access plans (refer to the “definition of the Sij reference planes” section below). Return Loss versus frequency 0 -2 -4 -6 Return Loss (dB) -8 -10 -12 -14 -16 -18 -20 -22 -24 -26 -28 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 Freq (GHz) - Power measurements in the plan of the connectors, using the proposed land pattern & board 96272-B (see page 8). Transmitted power detection versus Input power Vdetect= Vref-Vdet (mV) 10000 12 GHz 17GHz 22GHz 32GHz 37GHz 40GHz 27GHz 1000 100 10 1 -20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 Input power (dBm) Ref. : DSCHE1270-QAG8205 - 25 Jun 08 3/8 Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 Specifications subject to change without notice CHE1270-QAG 12-40GHz Detector Transmitted power detection versus frequency @ -15dBm Input power 40 Vdetect= Vref-Vdet (mV) 35 30 25 20 15 10 5 0 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 Freq (GHz) Transmitted power detection versus frequency @ +15dBm Input power 2000 1900 Vdetect= Vref-Vdet (mV) 1800 1700 1600 1500 1400 1300 1200 1100 1000 12 14 16 18 20 22 24 26 28 Freq (GHz) Ref. : DSCHE1270-QAG8205 - 25 Jun 08 4/8 Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 30 32 34 36 38 40 CHE1270-QAG 12-40GHz Detector Package outline (1): E1270 Matt Free Units tin, Lead From the standard (Green) 1- Nc 9- Gnd mm 2- Gnd 10- Nc JEDEC MO-220 3- RF IN 11- Gnd (VEED) 4- Gnd 12- Nc 5- VDET 13- Nc 6- DC 14- Nc 7- VREF 15- Nc 8- Nc 16- Nc 17- GND (1) The package outline drawing included to this data-sheet is given for indication. Refere to the application note AN0017 available at http://www.ums-gaas.com for exact package dimensions. Ref. : DSCHE1270-QAG8205 - 25 Jun 08 5/8 Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 Specifications subject to change without notice CHE1270-QAG 12-40GHz Detector Definition of the Sij reference planes The reference planes used for Sij measurements given above are symmetrical from the symmetrical axis of the package (see drawing beside). The input and output reference planes are located at 2.65mm offset (input wise and output wise respectively) from this axis. Then, the given Sij parameters incorporate the land pattern of the evaluation motherboard recommended at the page 8. Recommanded package footprint Refere to the application note AN0017 available at http://www.ums-gaas.com for package foot print recommandations. SMD mounting procedure The SMD leadless package has been designed for high volume surface mount PCB assembly process. The dimensions and footprint required for the PCB (motherboard) are given in the drawings above. For the mounting process standard techniques involving solder paste and a suitable reflow process can be used. For further details, see application note AN0017. Ref. : DSCHE1270-QAG8205 - 25 Jun 08 6/8 Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 CHE1270-QAG 12-40GHz Detector Notes CHE1270 RF IN Matching 27kΩ Ω Vdet 27kΩ Ω Vref DC Recommended external resistors assembly 27kΩ resistors in parallel with Vdet and Vref pads are recommended to provide the best behaviour in the whole operating temperature range. As the voltage detection is the difference between Vref and Vdet, the external resistor value should be identical on these two ports. For information, a variation of 3% leads around 1mV variation of detected voltage. Due to ESD protection circuits on RF input, an external capacitance might be requested to isolate the product from external voltage that could be present on the RF access. ESD protections are also implemented on Vdet and Vref accesses. The DC connection (on DC pad) does not include any decoupling capacitor in package, therefore it is mandatory to provide a good external DC decoupling on the PC board, as close as possible to the package. Ref. : DSCHE1270-QAG8205 - 25 Jun 08 7/8 Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 Specifications subject to change without notice CHE1270-QAG 12-40GHz Detector Evaluation mother board: Compatible with the proposed footprint. Based on typically Ro4003 / 8mils or equivalent. Using a microstrip to coplanar transition to access the package. Recommended for the implementation of this product on a module board. Decoupling capacitors of 10nF ±10% are recommended for all DC accesses. (See application note AN0017 for details). (Not used) Capacitor 10nF Vref DC Vdet Resistor 27kΩ Ordering Information QFN 3x3 RoHS compliant package: CHE1270-QAG/XY Stick: XY = 20 Tape & reel: XY = 21 Information furnished is believed to be accurate and reliable. However United Monolithic Semiconductors S.A.S. assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of United Monolithic Semiconductors S.A.S.. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. United Monolithic Semiconductors S.A.S. products are not authorised for use as critical components in life support devices or systems without express written approval from United Monolithic Semiconductors S.A.S Ref. : DSCHE1270-QAG8205 - 25 Jun 08 8/8 Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09