This Product Selection Guide contains information to help select products in the RF Demodulators category on DigiKey.com
RF Demodulators are devices designed to extract a signal from a modulated waveform, one that has been changed with the use of a frequency, amplitude, phase, amplifier or shifter.
SelectionCharacteristics
Function: Enumerates additional device functions/features not addressed elsewhere.
LO Frequency: Indicates the range of local oscillator frequencies over which a device is designed for use.
RF Frequency: The frequency or frequencies this product is designed to be compatible.
P1dB: 1 dB compression point; the power level at which a device’s gain or transfer function is reduced by 1 dB relative to its small-signal value.
Gain: Characterizes the ratio of output power to input power for a device, under manufacturer-defined test conditions.
Noise Figure: Characterizes SNR degradation caused by a component, given as the ratio (expressed in dB) between actual output noise power and portion thereof that is caused by the thermal noise of the input termination resistance at a standard temperature.
Current - Supply: This represents the maximum current to which a device will meet its given specifications. Exceeding this current may damage the device and/or other system components.
Voltage - Supply: Typically given in a range it represents the low and high voltage limits - within this range a device will meet its given specifications. Voltages outside this range may damage device and/or other system components.
Mounting Type: How the device is attached.
Mounting Type
Adhesive
Designed to attach using an adhesive substance.
Chassis Mount
Designed to be mounted to a metal chassis.
Chassis Mount, 8" Wire Lead
Attaches to a metal chassis but it includes an 8" wire for connection.
Chassis, Stud Mount
Designed to be mounted to a metal Chassis using an incorporated stud bolt. Check this one visually I found others with this mounting type that look different
Connector
Designed to attach using a connector.
Flange Mount
Screws or bolts go through wings (flanges) that protrude from the product.
Free Hanging
Designed with the connections on the ends.
Screw Mount
Attaches using screw terminals.
Stud Mount
Has a stud bolt incorporated into one side for attachment.
Surface Mount
Have pins or pads that connect to solder pads on the PCB that are then soldered in place forming an electrical and mechanical connection. Number in front of SMD indicates how many pins/pads, for example a 6-SMD module has 6 pins/pads. May not use or even have all the pins/pads for example 24-SMD module, 14 leads: would fit in the space of a 24-SMD module but only has 14 pins/pads. Typically, they are smaller than the through-hole components.
There are three basic types of pins (leads) for surface mount devices.
Lead Types
Gull wing leads: Enable the most pins per inch when compared to J-lead types but they are more fragile. Easy to inspect for defects after soldering.
J-Leads: Less pins per inch than gull wing leads but they are stronger and less susceptible to breakage.
Flat Leads: Must be protectively packaged to prevent damage to leads. Leads must be formed into a gull shape prior to use with a separate piece of equipment. Due to that they are the least popular type of lead.
Surface Mount, Wettable Flank
A wettable flank is calling out a specific design in which the mounting edge of an IC has a fillet that allows you to see and test that a proper connection has been made on a pad that is for the most part not visible once soldered on a board. This aids in inspecting packages such as QFNs.
Through Hole
Have leads (pins) that go through a pre-drilled hole on a PCB and are soldered in place forming both an electrical and a mechanical connection.
Package / Case: The protective case on an electronic component which allows for easy handling, installation, and protects the device. This is what we determined is the closest industry standard to the supplier device package. Typically, it is best to use the actual dimensions from the datasheet rather than to go by this terminology when designing your circuit.
Supplier Device Package: This is what the manufacturer calls the package of this device. They are manufacturer specific. It is typically best to use the actual dimensions from the datasheets rather than to go by this terminology when designing your circuit.
ProductExamples
| DigiKey Part Number | ADL5387ACPZ-R7TR-ND | |
| Manufacturer | Analog Devices Inc. | |
| Manufacturer Product Number | ADL5387ACPZ-R7 | |
| Description | RF DEMOD IC 30MHZ-2GHZ 24LFCSP | |
| Datasheet | Click Here |
| DigiKey Part Number | LT5502EGN#TRPBF-ND | |
| Manufacturer | Analog Devices Inc. | |
| Manufacturer Product Number | LT5502EGN#TRPBF | |
| Description | RF DEMOD IC 70MHZ-400MHZ 24SSOP | |
| Datasheet | Click Here |
MediaLinks
Videos
CMX970 Quadrature Modulator/Demodulator - RF Building Block Product Introduction
CMX994 Product Introduction Video
Articles
Article Library Results
Product Training Modules
IQ Demodulator - ADI