WFR1620 Datasheet – LTE/WCDMA/GSM RF Receiver

Part Number : WFR1620 (Receive Only), WTR1625L (Transceiver)

Description : LTE/WCDMA/GSM RF Receiver Companion

Package : WLP-66 Type

Manufacturers : Qualcomm

Image :


WFR1620 Datasheet

WTR1625L supports all cellular modes and bands that are currently fully specified in 3GPP. An additional, much smaller WFR1620 receive-only companion chip is required for implementation of carrier aggregation with WTR1625L.


1. iphone, mobile phone

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EKM6251 Datasheet PDF – RF Mouse Rx Controller – Elan

Part Number : EKM6251

Function : U+P RF Mouse Rx Controller

Package : DIP, SOP 16 Pin Type

Manufacturers : Elan Microelectronics Corp

Pinouts :

EKM6251 datasheet


Description :

The eKM6251 is standard RF Mouse Receiver (Rx) Controller for USB and PS/2 compatible interface. It’sreceives the RF packet data fromRF Rx module (circuits). And decode the RF packet data and transmitting the data to PC by USB or PS/2 interface. The eKM6251 have internal EEPROMto storage the Device ID, do not need the external storage device like 93C46. It’shave built-in RF signal sampling and noise immunity function to improve the RF data decode efficiency.


1. Operating voltage: 2.5V~5.5V
2. Built-in regulator to generate 3.3V
3. Operating frequency: 6.00Mhz
4. Built-in USB Device Controller and Interface.
5. Support USB and PS/2 detect mode and compatible interface.
6. Built-in EEPROM to storage 1 byte Device ID (255 sets)
7. Built-in RF signal sampling and noise immunity function.
8. Support a LED to display RF packet receive status and ID set mode.


1. USB RF Mouse Rx
2. PS/2 RF Mouse Rx

Other data sheets within the file : KM6251

EKM6251 Datasheet PDF Download

EKM6251 pdf