Product Specifications for HMC394LP4ETR

Product Overview

The HMC394LP4ETR is a low noise GaAs HBT programmable 5-bit counter designed for surface-mount applications. It operates from DC to 2.2 GHz and is ideal for low noise synthesizer applications due to its excellent phase noise performance.

Key Features

• Frequency Range: DC to 2.2 GHz
• Programmable Division Ratios: From 2 to 32
• Low Additive SSB Phase Noise: -153 dBc/Hz at 100 kHz offset
• Parallel 5-Bit Control
• Wide Input Power Range: -20 to +10 dBm
• Output Voltage Swing: 800 mV
• Output Transition Time: 100 ps
• Supply Current: 194 mA
• Package: 4 x 4 mm QFN (24 leads)
• Operating Temperature Range: -55°C to +85°C

Applications

• Satellite Communication Systems
• Point-to-Point and Point-to-Multi-Point Radios
• LMDS (Local Multipoint Distribution Service)
• SONET (Synchronous Optical Networking)

Electrical Specifications (TA = +25°C, 50 Ohm System, Vcc = 5V)

• Maximum Input Frequency: 2.2 GHz
• Minimum Input Frequency: 0.1 GHz
• Input Power Range: -15 dBm to +10 dBm
• Output Power (Divide-by-2): 4 dBm
• SSB Phase Noise (Fin = 1 GHz, N = 4): -153 dBc/Hz
• Output Transition Time: 100 ps
• Supply Current (Icc): 194 mA

Ordering Information

• Part Number: HMC394LP4ETR
• Package: RoHS-compliant Low Stress Injection Molded Plastic
• Lead Finish: 100% matte Sn
• MSL Rating: MSL1
• Package Marking: H394 XXXX (4-digit lot number)

Absolute Maximum Ratings

• RF Input (Vcc = +5V): +13 dBm
• Vcc: +5.5V
• VLogic: -1.6 to -1.2 Vcc
• Maximum Channel Temperature: 135°C
• Continuous Pdiss (T = 85°C): 1.155 W (derate 55 mW/°C above 85°C)

Package Information

• Thermal Resistance (u j-c): 21.5 °C/W
• Storage Temperature: -65°C to +150°C
• Operating Temperature: -55°C to +85°C

Pin Description

• 1-5 (AO-A4): CMOS compatible control input bits 0 (LSB) to 4
• 6, 9, 10, 11, 12, 15, 18, 19, 20, 21, 22 (GND): Ground
• 7, 8, 23, 24 (VCC): Supply voltage 5V ± 0.25V
• 13 (IN): RF input 180° out of phase with pin 14, must be AC ground
• 14 (IN): RF input, must be DC blocked
• 16 (OUT): Divided output pulse
• 17 (OUT): Divided output pulse 180° out of phase with pin 16

Programming Truth Table

Applications Information

• Simplified Block Diagram: The counter counts down from the programmed value to zero and issues an output pulse at the end of each cycle.
• Asynchronous Programming: The worst-case settling time can be calculated as TSETTLINGMAX​=32/fIN​.
• Synchronous Programming: Data is loaded into the counter on every rising edge of the clock. The worst-case settling time can be calculated as TSETTLINGMAX​=N/fIN​.

Evaluation PCB

• List of Materials:J1-J3: PCB Mount SMA RF ConnectorC1-C2: 1.0 µF Tantalum CapacitorC3-C4: 0.01 µF Capacitor, 0603 Pkg.C5-C8: 1000 pF Capacitor, 0603 Pkg.R1: Resistor SIP 10 K ohmS1-S6: Jumper (shunt) 2mmU1: HMC394LP4 / HMC394LP4E 5-Bit CounterPCB: 104435 Eval Board