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參數(shù)資料
| 型號： | LA1137N |
| 元件分類： | 接收器 |
| 英文描述： | AM, AUDIO SINGLE CHIP RECEIVER, PDIP20 |
| 封裝： | SDIP-20 |
| 文件頁數(shù)： | 3/19頁 |
| 文件大?。?/td> | 720K |
| 代理商： | LA1137N |
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
Oscillator
LW to SW
Supports AM stereo in LW
and MW, low-band noise reduction
LW to SW
Local-oscillator buffer
Yes
IF amplifier
Yes
Detector
External capacitor
Internal capacitor
IF-band switching
No
Yes
No
S-meter linearity
Approximately 80 dB
Approximately 100 dB
Active-HIGH stop detector output No (requires 2 transistors)
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
AM stereo buffer
No
Yes
No
IF AGC
Yes
IF AGC time-constant switching
No (requires 1 transistor)
Yes
IF AGC reset
No
Yes
Wideband RF AGC
Yes
RF AGC time-constant switching
No
Yes
Antenna dumping
Transistor
Pin-diode
Tweet prevention
No
Yes
LA1136N, 1136NM, 1137N, 1137NM
No. 3507-11/28
相關PDF資料 |
PDF描述 |
|---|---|
| LA1136NM | AM, AUDIO SINGLE CHIP RECEIVER, PDSO24 |
| LA1136N | AM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
| LA1143 | FM, AUDIO DEMODULATOR, PDIP16 |
| LA1145M | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| LA1145 | SPECIALTY CONSUMER CIRCUIT, PZIP18 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LA1137NM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos |
| LA1140 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LA1140_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:FM IF SYSTEM FOR CAR RADIO |
| LA1140B-E | 制造商:ON Semiconductor 功能描述:CAR RADIO FM IF SYSTEM - Ammo Pack |
| LA1140-E | 功能描述:射頻接收器 CAR RADIO FM IF SYSTEM RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
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