RDA1846 PDF Datasheet – Single-chip Transceiver

Part Number : RDA1846

Function : Single-chip Transceiver

Package : QFN 32 Pin Type

Manufactures : RDA

Images :

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RDA1846 image

Description :

The RDA1846 is a highly integrated single-chip transceiver for Walkie Talkie applications. It totally realizes the translation from RF carrier to voice in the RX path and from voice to RF carrier in the TX path, requiring only one micro controller. The RDA1846 has a powerful digital signal processor, which makes it have optimum voice quality, flexible function options, and robust performance under varying reception conditions. The RDA1846 can be tuned to the worldwide frequency band for Walkie Talkie from 400MHz to 500MHz and especially from 134MHz to 174MHz which meets the frequency band of weather broadcast. The transceiver uses the CMOS process with a package size of 5X5mm. By virtue of its high integration, it requires the least external components and eliminates the complicated design of sensitive RF circuits on PCB.

Features :

 CMOS single-chip fully-integrated transceiver Fully integrated frequency synthesizer and VCO Support worldwide frequency band

 134MHz ~ 174MHz 400MHz ~ 500MHz   MIC_IN AVDD Figure 1.1 RDA1846 Top View DTMF and programmable in-band dual tone Programmable in-band single tone transmitter Auto RX/TX/SLEEP state switching 8 GPIOs 3-wire/4-wire/I2C serial control bus interface On chip 8 dBm PA Analog and digital volume control Directly support 32Ω resistance loading 3.3 to 4.8 V supply voltage with Integrated LDO 5X5 mm 32 pin QFN package 12.5KHz, 25KHz channels Support multiple XTAL clocks   12.8/25.6Mhz 13/26Mhz  Digital auto frequency control (AFC) Digital auto gain control (AGC) Selectable pre/de-emphasis Received signal strength indicator (RSSI) VOX and SQ Build-in CTCSS/CDCSS generator and judgment   CTCSS with 120/180 /240 degree phase shift 23/24 bit programmable DCS code 1.2 Applications    Cellular handsets Family radio services Walkie Talkies Copyright © RDA Microelectronics Inc. 2009. All rights are reserved. The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of RDA. AFOUT AVDD NC NC Cc GPIO7 Free Datasheet http:// 2. Table of Contents General Description 1 1.1 Features1 1.2 Applications .1 2. Table of Contents [.]

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RDA1846 Datasheet

SN74GTL16616DL Datasheet PDF – 17-bit UBT Transceiver

Part Number : SN74GTL16616DL

Marking : GTL16616


Package : SSOP 56 Pin type

Manufacturers : Texas Instruments

Pinouts :

SN74GTL16616DL datasheet


Description :

The SN74GTL16616DL is a 17-bit UBT transceiver that provides LVTTL-to-GTL/GTL+ and GTL/GTL+-to-LVTTL signal-level translation. Combined D-type flip-flops and D-type latches allow for transparent, latched, clocked, and clocked-enabled modes of data transfer identical to the ‘16601 function.

Additionally, this device provides for a copy of CLKAB at GTL/GTL+ signal levels (CLKOUT) and conversion of a GTL/GTL+ clock to LVTTL logic levels (CLKIN). This device provides an interface between cards operating at LVTTL logic levels and a backplane operating at GTL/GTL+ signal levels.

Higher-speed operation is a direct result of the reduced output swing (<1 V), reduced input threshold levels, and OEC circuitry.

Logic Diagram :

Features :

1. GTL Buffered CLKAB Signal (CLKOUT)

2. Translates Between GTL/GTL+ Signal Levels and LVTTL Logic Levels

3. Supports Mixed-Mode (3.3 V and 5 V) Signal Operation on A-Port and Control Inputs

4. Equivalent to ‘16601 Function

5. Ioff Supports Partial-Power-Down Mode Operation


SN74GTL16616DL Datasheet PDF Download

SN74GTL16616DL pdf

Other data sheets within the file :

74GTL16616DGGRE4, 74GTL16616DGGRG4, 74GTL16616

,GTL16616,SN74GTL16616, SN74GTL16616DGGR