PDF LA1136NM Data sheet ( Hoja de datos )

Número de pieza	LA1136NM
Descripción	AM Tuners for Car Radios and Home Stereos
Fabricantes	Sanyo Semicon Device
Logotipo
Hay una vista previa y un enlace de descarga de LA1136NM (archivo pdf) en la parte inferior de esta página. Total 28 Páginas
No Preview Available ! Ordering number: EN 3507 Monolithic Linear IC LA1136N, 1136NM, 1137N, 1137NM AM Tuners for Car Radios and Home Stereos Overview The LA1136N/NM and LA1137N/NM are high-performance AM electronic tuner ICs offering sophisticated functions. They are especially suited for use in car radio and home stereo (antenna: loop) applications. Functions . MIX . OSC (with ALC) . IF amplifier . Detector . AGC (normal) . RF wide-band AGC . Auto search stop signal (Signal meter output) . Local oscillation buffer output . IF band switching circuit (for LA1136N only) . IF count buffer . Stop detector output (can be set independently) . Tweet prevention circuit . AGC (RF, IF) time constant switching circuit . IF AGC circuit . Pin-diode driver . AM stereo decoder IF output (for LA1136N only) . Circuit preventing incorrect seek operation Features . Excellent cross modulation characteristic: Meets the requirements for preventing not only adjacent-channel interference but also interference caused by all channels . within broadcast band. Narrow-band signal meter output: Usable as auto search stop . signal. Has linearity up to 100 dBµ. Local oscillation buffer output: Facilitates designing of . electronic tuner system, frequency display, etc. OSC (with ALC): Improves tracking error because oscillation output is stabilized at a low level (350 mVrms: . LA1137N) for varactor diode. MIX: Double-balanced differential MIX meeting the requirements for preventing spurious interference, IF . interference. Good characteristic at high input: 130 dBµ input fm = 400 Hz 80%mod THD = 0.5% typ. . High S/N: Good S/N at medium input (55 dB typ). . Usable sensitivity: (S/N = 20 dB input): 25 dBµ . (when using 2SK715 ) VCC variation compensation: Less variation in gain, distortion: 8 to 12 V AM stereo capability (LA1136N only) . IF band switching circuit on chip; controlled by . microcontroller Oscillating circuit for AM stereo; SUB S/N improved to 6 dB . IF output for AM stereo decoder . Improved tweet characteristics: 10 dB increase, controlled by . microcontroller Improved cross modulation characteristics, especially sensitivity suppression characteristics: 15 dB improvement, wide-band AGC operation even for SW band interference . Improved low-frequency modulation distortion . Improved temperature characteristics: S-meter, SD sensitivity . Faster RF AGC response: RF: 1/3; IF: 1/8 (compared to . predecessors) Improved capability for driving external RF AGC transistors: IB max = 200 µA . Measures to prevent incorrect seek operation . IF count buffer on chip; controlled by microcontroller . Time constant switching circuit on chip for RF and IF AGC . IF AGC clear circuit on chip . Measures that prevent stopping one station too soon SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 93097HA(II)/4281TS(US) No.3507-1/28 1 page LA1136N, 1136NM, 1137N, 1137NM LA1136N, LA1136NM Test Circuit No. 3507-5/28 5 Page LA1136N, 1136NM, 1137N, 1137NM LA1136N, LA1137N Pin Specifications (Pins connected to an external microcontroller) (1) IF Band Switching : Pin 12 Narrowband : 3.5 V or greater Wideband : 2.1 V or lower (2) Seek Detection : Pin 14 Station seek : 3.5 V or greater Receive mode : 1.5 V or lower (3) IF Count Buffer : Pin 17 IF count buffer enabled : 2.5 V or greater IF count buffer disabled : 1.2 V or lower (4) SD output, tweet prevention control pin: Pin 22 The function of pin 22 is determined by the control voltage on pin 14 as follows: [Pin 14] [Pin 22] HIGH (3.5 V or higher) → SD output pin (active high) LOW (1.5 V or lower) → Tweet prevention input pin Microcontroller control voltage, Tweet prevention HIGH (3.5 V or higher) off LOW (1.5 V or lower) on Note: It is necessary to modify the microcontroller specifications in order to implement tweet prevention. When a conventional microcontroller is used with the LA1136N or the LA1137N, the tweet prevention circuit does not operate, but all other functions operate independently. Device Comparison Comparison between LA1135, LA1136N and LA1137N Parameter LA1135 LA1136N LA1137N Packages DIP20S, MFP20 DIP24S, MFP24 DIP20S, MFP20 Double-balanced mixer Yes Yes Yes Oscillator LW to SW Supports AM stereo in LW and MW, low-band noise reduction LW to SW Local-oscillator buffer Yes Yes Yes IF amplifier Yes Yes Yes Detector External capacitor Internal capacitor Internal capacitor IF-band switching No Yes No S-meter linearity Approximately 80 dBµ Approximately 100 dBµ Approximately 100 dBµ Active-HIGH stop detector output No (requires 2 transistors) Yes Yes Stop detector sensitivity S-meter load dependent Set by external resistor (Pin 10) Set by external resistor (Pin 9) IF count buffer No (requires 2 transistors) Yes Yes AM stereo buffer No Yes No IF AGC Yes Yes Yes IF AGC time-constant switching No (requires 1 transistor) Yes Yes IF AGC reset No Yes Yes Wideband RF AGC Yes Yes Yes RF AGC time-constant switching No Yes Yes Antenna dumping Transistor Pin-diode Pin-diode Tweet prevention No Yes Yes No. 3507-11/28 11 Page

Páginas	Total 28 Páginas
PDF Descargar	[ Datasheet LA1136NM.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
LA1136N	AM Tuners for Car Radios and Home Stereos	Sanyo Semicon Device
LA1136NM	AM Tuners for Car Radios and Home Stereos	Sanyo Semicon Device

Número de pieza	Descripción	Fabricantes
SLA6805M	High Voltage 3 phase Motor Driver IC.	Sanken
SDC1742	12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.	Analog Devices

DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.

DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar