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Part Name(s) : LA1837M ON-Semiconductor
ON Semiconductor
Description : Single-chip AM/FM Tuner IC for Home stereo Systems View

Overview
The LA1837M is a Single-chip AM/FM tuner IC that provides AM and FM IF and multiplex decoding circuits for electronic tuning and was developed for use in home stereo systems. It provides both SD and IF counting techniques for optimal implementation of automatic station selection.

Features
• On-chip MPX VCO circuit (no external components required).
• Adjacent channel interference rejection function (third order and fifth order).
• Supports both the SD and IF counting technique (built-in SD speedup function).
• The AM and FM SD sensitivity can be set independently.
• The AM and FM output levels can be set independently.
• Improved basic FM reception performance.

Functions
• AM: RF amplifier, mixer, oscillator, IF amplifier, detector, AGC, oscillator buffer, S-meter, narrow band SD, IF buffer
FM IF: IF amplifier, quadrature detector, S-meter, SD, S curve detection, IF buffer output
• Multiplex stereo decoding: PLL stereo decoder, stereo indicator, forced monaural, VCO stop function, post amplifier, audio muting, adjacent channel interference rejection function

Part Name(s) : LA1883 LA1883M SANYO
SANYO -> Panasonic
Description : Single-chip FM/AM tuner for car radio snd home stereo equipment View

Single-chip FM/AM Tuner for Car Radio and Home stereo Equipment


Part Name(s) : LA1837M SANYO
SANYO -> Panasonic
Description : Monolithic Linear IC Single-chip AM/FM Tuner IC for Home stereo Systems View

Overview
The LA1837M is a Single-chip AM/FM tuner IC that provides AM and FM IF and multiplex decoding circuits for electronic tuning and was developed for use in home stereo systems. It provides both SD and IF counting techniques for optimal implementation of automatic station selection.

Features
• On-chip MPX VCO circuit (no external components required).
• Adjacent channel interference rejection function (third order and fifth order).
• Supports both the SD and IF counting technique (built-in SD speedup function).
• The AM and FM SD sensitivity can be set independently.
• The AM and FM output levels can be set independently.
• Improved basic FM reception performance.

Functions
• AM: RF amplifier, mixer, oscillator, IF amplifier, detector, AGC, oscillator buffer, S-meter, narrow band SD, IF buffer
FM IF: IF amplifier, quadrature detector, S-meter, SD, S curve detection, IF buffer output
• Multiplex stereo decoding: PLL stereo decoder, stereo indicator, forced monaural, VCO stop function, post amplifier, audio muting, adjacent channel interference rejection function

Part Name(s) : RDA5820 ETC
Unspecified
Description : Single-chip broadcast FM TRANSCEIVER View

General Description
The RDA5820 is a Single-chip broadcast FM transceiver with fully integrated synthesizer, IF selectivity and MPX decoder. The chip uses the CMOS process, support multi-interface and require the least external component. The package size is 4X4mm and is completely adjustment-free. All these make it very suitable for portable devices.
The RDA5820 has a powerful low-IF digital audio processor, this make it have optimum sound quality with varying reception conditions.
The RDA5820 use RDA patented dual synthesizers, all digital transmit structure, this make it have perfectly transmition performance and agility.
The RDA5820 support 65M~115M frequency band receive and transmit, integrate 4K memory, these make it can be used in simple wireless control appliance such as toy.

Features
● CMOS Single-chip fully-integrated FM transceiver
● Low power consumption
   ► Total current consumption lower than 20mA at 3.0V power supply
● Support worldwide and campus frequency band
   ► 65 -115 MHz
● Digital low-IF tuner
   ► Image-reject down-converter
   ► High performance A/D converter
   ► IF selectivity performedinternally
● Fully integrated digital frequency synthesizer
   ► Fully integrated on-chip RF and IF VCO
   ► Fully integrated on-chip loopfilter
● All digital transmitter
● Autonomous search tuning
● Support integrated Rx/Tx PCB antenna
● Support SNRFM searching
● Include 4K memory
● Support 32.768KHz crystal oscillator
● Digital auto gain control (AGC)
● Digital adaptive noise cancellation
   ► Mono/stereo switch
   ► Soft mute
   ► High cut
● Programmable de-emphasis (50/75 ms)
● Receive signal strength indicator (RSSI)
● Bass boost
● Volume control
● Support I2S digital transmitter
● Support audio power amplifier ( 32Ω resistance loading)
● I2S digital input / output interface
● Line-level analog output voltage
● 32.768 KHz, 12M,24M,13M,26M,19.2M,38.4MHz reference clock
● 2-wire and 3-wire serial control bus interface
● Directly support 32Ω resistance loading
● Integrated LDO regulator
   ► 2.7 to 5.5 V operation voltage
● 4X4mm 24 pinQFN package

Applications
● Cellular handsets
● MP3, MP4 players
● Portable radios
● PDAs, Notebook PCs
● Wireless Toys


Part Name(s) : LA1831 LA1831M SANYO
SANYO -> Panasonic
Description : Support for AM stereo and electronic tuning single chip music center IC (AM/FM IF + MPX) for use in compact radio/casette products View

Support for AM stereo and electronic tuning single chip music center IC (AM/FM IF + MPX) for use in compact radio/casette products


Part Name(s) : CX25840 CX25841 CX25842 CX25843 Conexant
Conexant Systems
Description : Single-chip broadcast Audio/Video Decoder View

Highly Flexible Single-chip Video and broadcast Audio Decoding



Conexant’s broadband communications portfolio includes a comprehensive suite of semiconductor solutions that enable the digital home and information network. The CX25840/1/2/3 is Conexant’s second generation of Audio/Video(A/V) decoders built on the success of the CX23880 family of broadcast A/V PCI decoders. These devices are optimized for the regional broadcast requirements and are pin-to-pin compatible with each other. The CX25840/1/2/3 is the smallest integrated stereo broadcast A/V decoder capable of demodulating all of the most common worldwide A/V standards.



Distinguishing Features

• Auto detection and configuration for audio/video

• Worldwide audio standards - BTSC, EIA-J, A2, NICAM, FM/AM

• Baseband audio support via I2S and AC 97

• Two 10 bit A/D

• Component video support

• Integrated anti-alias filter

• 12mm X 12mm 80-TQFP

• 4H adaptive comb

• On-chip voltage regulator



Typical Applications

• Flat panel displays

• HDTV

• TV tuners

• DVD players

• Video cameras

• Set-top boxes

• VCRs and PVRs

• Game consoles



 


Part Name(s) : NTE7200 NTE-Electronic
NTE Electronics
Description : Intergrated Circuit FM stereo Transmitter View

Description:

The NTE7200 is a monolithic intergrated circuit in an 18-Lead DIP type package designed for use as a stereo transmitter. This device consists of a stereo modulator that creates stereo composite signals, an FM modulator that creates FM signals, and an RF amplifier. The stereo modulator develops composite signals made up of a MAIN (L+R) signal, a SUB (L-R) signal and a pilot (19kHz) signal using 38kHz crystal oscillators.

The FM modulator has carriers on the FM broadcast band (75 to 108MHz). The RF amplifier transmits the stereo encoded FM signals and is also a buffer for the FM modulator. The stereo transmitter is equipped with a constant voltage pin for a variable capacitor that is used to finly adjust the FM frequency.



Features:

• Low Operating Voltage Range (1.0V to 2.0V)

• Low Power Consumption (3mA Typ)

• Few External Components Required



Applications:

FM stereo Transmitters

• Wireless Microphones



 


Part Name(s) : TEA5767 TEA5768 Philips
Philips Electronics
Description : Single-chip FM stereo radio View

The Single-chip TEA5767/68 is a miniature, digitally tuned radio IC that utilizes an entirely new radio architecture concept that replaces passive components and complex circuitry, with on-board silicon, drastically reducing the overall bill of materials and making design-in easier. It requires zero external alignments, resulting in shorter design times and lower manufacturing costs due to simplified component placement and reduced logistics overhead. Also, being adjustment free, it delivers increased quality and reliability, both in manufacture and throughout its lifetime in your end application.
As well as offering increased functionality in handheld devices, the radio IC is ideal for integration in a wide range of applications, where its minimal interaction with the rest of your application helps avoid reception / transmission interference. The TEA5767/68 also features very low power consumption and its small footprint makes it ideal for applications where board space is at a premium.
Capable of tuning to European, US and Japanese FM bands, the TEA5767/68 does not need an external FM discriminator and handles IF selectivity entirely on-chip.

Key features
• Only 18 external components (19 passive components replaced by silicon)
• No alignments necessary
• Fully integrated FM IF selectivity and demodulation
• Signal dependent mono / stereo blend (stereo noise cancelling)
• Adjustment free stereo decoder
• Soft mute and signal dependent high cut control (HCC)
• Autonomous Search Tune (AST) to decrease bus communication
• Software switchable low / high injection local oscillator
• Two software programmable ports
• 32.768 kHz / 6.5 MHz / 13 MHz software switchable oscillator
• Package/interface options
   - TEA5767HL with 3-wire bus – LQFP32
   - TEA5768HL with I2C-bus – LQFP32
   - TEA5767HN with switchable 3-wire / I2C-bus – small HVQFN40
• Standby mode switched via bus
• 2.5 V minimum supply voltage
• Automotive temperature range (at 5 VCC)

Applications
FM stereo receiver in MP3 players, portable audio devices and mobile phones
• Miniature FM radio
• Mini- and micro-sized audio systems
• Home Hi-Fi

Part Name(s) : TDA7514 E-TDA7514 E-TDA7514TR ST-Microelectronics
STMicroelectronics
Description : Single-chip FM/AM TUNER WITH stereo DECODER AND AUDIO PROCESSOR View

DESCRIPTION
The TDA7514 is a device for car-radio applications that combines full RF front-end functions with advanced audio-processing capabilities.
As far as FM and AM functions are concerned, the TDA7514 features front-end processing, including the digital tuning PLL. IF processing with demodulation and variable-bandwidth IF filtering (ISS), stop station and quality detection functions, FM stereo decoding by means of a fully integrated adjustment-free dedicated PLL and, finally, AM and FM noise blanking (AM noise blanking comprises one IF NB as well as an audio NB).
The FM stereo decoder and the noise blanking functions are realised entirely without external components. The FM front-end circuit features an image-rejection mixer that allows the simplification of the external preselection filter, and a very low noise level that allows getting rid of the external preamplifier with no loss in sensitivity. A 6 bit on board ADC makes a digitised version of the Sme ter available to the µP via I2Cbus.
The audio processor section comprises input selectors for one stereo single-ended source, one stereo quasi-differential source and a mono differential source. Volume, loudness, tone (bass and treble), balance and fading controls are available with completely pop-free operation to drive four output channels. An additional input independently mixable on each of the four outputs is provided for chime. A soft mute function and an RDS mute function are included to handle source change as well as RDS AF search without abrupt changes in the audio level.
Most of the parameters in the front-end section are I2Cbus-driven and therefore under the control of the car-radio maker. The I2Cbus allows further more the user to realise the full electric alignment of all the external coils.

FEATURES
■ AM/FM WORLD TUNER FOR CAR-RADIO
■ INTEGRATED IMAGE REJECTION FM MIXER
■ INTEGRATED TUNING PLL
■ VARIABLE-BANDWITH FM IF FILTER (ISS)
■ FULLY INTEGRATED FM stereo DECODER
■ FULLY INTEGRATED FM/AM NOISE BLANKER
■ HIGHLY INTEGRATED AUDIO PROCESSOR

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