Features Functional Block Diagram Low phase error Low insertion loss 36 phase shift, LSB = 22.5 Single bit positive logic Pb-free RoHs compliant 4x4 QFN package Description The CMD176P4 is a GaAs MMIC 4-bit phase shifter housed in a leadless 4x4 mm plastic surface mount package. The CMD176P4 operates from 13 to 17 GHz and provides to 36 degrees of monotonic phase coverage, with a LSB of 22.5 degrees. The device is controlled with single bit positive logic of or +3 V and features an insertion loss of 8 db and a phase error of ± 5 degrees. The CMD176P4 is a 5 ohm matched design which eliminates the need for external DC blocks and RF port matching. Electrical Performance - Vctl = /+3 V, T A = 25 o C, F = 15 GHz Parameter Min Typ Max Units Frequency Range 13-17 GHz Insertion Loss 8 db Input Return Loss 18 db Output Return Loss 14 db Phase Error +3 / -1 deg Input P1dB 26 dbm Input IP3 41 dbm
Specifications Absolute Maximum Ratings Parameter Control Voltage, Vctl RF Input Power Rating 8. V +3 dbm Operating Temperature -4 to 85 C Storage Temperature 5 to 15 C Operation of this device outside the maximum ratings may cause permanent damage. Recommended Operating Conditions Parameter Min Typ Max Units Vctl 3. 5. V Iee 4 6 ma Electrical performance is measured at specific test conditions. Electrical specifications are not guaranteed over all recommended operating conditions. Truth Table Control Voltage Control Voltage Input 22.5 45 9 18 Phase Shift (degrees) Low Low Low Low Reference High Low Low Low 22.5 Low High Low Low 45 Low Low High Low 9 Low Low Low High 18 High High High High 337.5 State High Low Bias Condition Vctl ±.3 V ±.3 V
Specifications Electrical Specifications - Vctl = /+3 V, T A = 25 o C Parameter Min Typ Max Min Typ Max Units Frequency Range 13-17 14.4-15.6 GHz Insertion Loss 8.5 1.5 8.5 9.5 db Input Return Loss 15 18 db Output Return Loss 1 12 db Phase Error ± 5 +15 / -1 ± 5 ± 9 deg Insertion Loss Variation ±.5 ±.5 db Input P1dB 26 26 dbm Input IP3 4 4 dbm Note: Specification applies to major states
Typical Performance Insertion Loss, Major States, T A = 25 o C -1-2 -3-4 Insertion Loss/dB -6-7 -8-9 -1-11 -12-13 -14 Relative Phase Shift, Major States and All On State, T A = 25 o C 45 382.5 36 337.5 315 Relative Phase Shift/degrees 292.5 27 247.5 225 22.5 18 157.5 135 112.5 9 67.5 45 22.5
Typical Performance Input Return Loss, Major States, T A = 25 o C -1 Return Loss/dB -15-2 -25-3 Output Return Loss, Major States, T A = 25 o C Return Loss/dB -1-15 -2
Typical Performance Normalized Loss, Major States 5 4 3 2 Normalized Loss/dB 1-1 -2-3 -4 Phase Error, Major States and All On State 25 2 15 1 Phase Error/degrees 5-1 -15-2 -25
Typical Performance Insertion Loss vs. Temperature, Reference State -1-2 -3 +25C +85C -4C -4 Insertion Loss/dB -6-7 -8-9 -1-11 -12-13 -14 Input P1dB 3 29 28 Reference State All On State 27 Input P1dB/dBm 26 25 24 23 22 21 2 13 13.5 14 14.5 15 15.5 16 16.5 17
Typical Performance Input IP3 45 44 43 42 41 4 Input IP3/dBm 39 38 37 36 35 34 33 Reference State All On State 32 31 3 13 13.5 14 14.5 15 15.5 16 16.5 17
Mechanical Information Package Information and Dimensions aaa aaa θ bbb M SYMBOLS DIMENSIONS IN MILLIMETERS MIN NOM MAX A.8.9 1. A1.2.5 A3.25REF. b.18.23.3 D D1 3.85 4. 2.45BSC 4.15 E 3.85 4. 4.15 E1 2.45BSC e.5βsc L.3.4.5 θ 12 aaa.25 bbb.1 ccc.1 M.5 Recommended PCB Land Pattern GaAs MMIC devices are susceptible to damage from Electrostatic Discharge. Proper precautions should be observed during handling, assembly and test.
Pin Description Pin Diagram Functional Description Pad Function Description Schematic 1-4, 7-12, 15-19, 24 N/C No connection required. These pins may be connected to RF / DC ground 6 RF in DC blocked and 5 ohm matched RF in 13 RF out DC blocked and 5 ohm matched RF out 2 22.5 22.5 control input 21 45 45 control input Vctl 22 9 9 control input 23 18 18 control input 5, 14 and die paddle Ground Connect to RF / DC ground GND
Applications Information Evaluation Board Bill of Material Designator Value Description J1, J2 SMA End Launch Connector P1 U1 PCB 1 Pin DC Header CMD176P4 4-Bit Phase Shifter CM173A Evaluation PCB