1. Device Overview & Function

️· Type: SPDT (Single-Pole Double-Throw) PIN Diode Switch
️· Technology: AlGaAs (Aluminum Gallium Arsenide)
️· Application: Used in RF/Microwave circuits requiring switching capabilities.
️· Operation: Functions by applying positive and negative DC currents to the respective switching ports. One port is in a "low loss" state while the other is in an "isolation" state.
️· DC Return Plane: Requires a DC return ground plane on the backside of the die.
️· Bias: Operates with a forward bias voltage of around ±1.4 volts with ±30mA supply current.

2. Key Electrical Specifications (Highlights)

️· Frequency Range: 2-18 GHz (typical, supports a broadband application)
️· Insertion Loss: Minimized by a voltage pull-up resistor in the DC return path.
️· Isolation: > 30 dB RF to DC Isolation
️· Switching Speed: Achieved through a TTL controlled PIN diode driver.

3. Bias & Control

️· Current Control:
- +10mA to J2: Low Loss state (J2-J1)
- -10mA to J3: Isolation state (J3-J1)
️· Bias Network: Requires a bias network. MA4BN1840-1 and MA4BN1840-2 are suggested alternatives.
️· DC Return: A voltage pull-up resistor (minimum -2V) is recommended at the DC return node.

4. Physical Characteristics

️· Package Options:
- Waffle Pack
- Gel Pack (MASW-000552-13210G)
️· Die Dimensions (mils/mm):
- A: 49/1.245
- B: 30.7/0.780
- C: 17.8/0.452
- D: 13.9/0.358
- E: 20.5/0.521
- F: 4.0/0.102
- G: 3.9/0.099
- Thickness: 4.0/0.102
️· Bonding Pads: Marked in Yellow on the chip dimension diagram.

5. Important Notes & Recommendations

️· Refer to datasheets for MA4BN1840-1 and MA4BN1840-2 for bias network options.
️· A voltage pull-up resistor in the DC return path is crucial for optimal performance.
️· TTL-controlled PIN Diode Driver recommended for achieving fast switching speeds.