- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄30714 > LA1784M AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 PDF資料下載
參數(shù)資料
| 型號： | LA1784M |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| 封裝： | QIP-64 |
| 文件頁數(shù)： | 45/50頁 |
| 文件大小： | 568K |
| 代理商： | LA1784M |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁當(dāng)前第45頁第46頁第47頁第48頁第49頁第50頁
Operating Characteristics and Symbols Used in the Test Circuit Diagrams
Switches (SW)
Switch on = 1, SW off = 0
There are two switches that use signal transfer.
— SW2: switches between the mixer input and the IF input.
— SW4: switches between noise canceler input and IF output + noise canceler input.
No. 6039-5/50
LA1784M
Types of SG used
PG1 (AC1)
Used for noise canceler testing. A pulse generator and an AF oscillator are required.
AC2
Used for FM front end testing. Outputs an 83 MHz signal.
AC3
Used for FM IF, noise canceler, and MPX testing. Outputs a 10.7 MHz signal. Stereo modulation must be possible.
AC4
Used for AM testing. Outputs 1 MHz and 1.4 MHz signals.
AC5
Used with the MRC. Can also be used for AF and OSC.
Power supply
VCC
8 V
VCC1
5 V
SD, stereo, seek/stop
VCC2
0.1 V / 0.7 V / 2 V / 4 V
These levels
Keyed AGC, Mute ATT
VCC3
0.1 V / 0.6 V / 2 V
must be variable.
HCC, SNC, SASC (MRC)
Trimmers (variable resistors)
VR1
Separation adjustment
VR2
Pilot cancellation adjustment
AC voltages
VA1
AM/FM OSC Buff
Pin 4
VA2
First IF output
Pin 53
→ CF → pin 51 load level (10.7 MHz)
VA3
IF counter buffer
Pin 23 (10.7 MHz/450 kHz)
VA4
MPX OUT Left ch
Pin 15 (AF)
VA5
MPX OUT Right ch
Pin 16 (AF)
Test Points
DC voltages
VD1
FM RF AGC voltage
Pin 2
VD2
AM/FM SD, AM Tweet, FM stereo indicator
Pin 26
VD3
AM/FM S-meter
Pin 24
VD4
MRC output
Pin 27
VD5
Mute drive output
Pin 33
VD6
AM antenna damping voltage
Pin 46
VD7
N.C. Gate time
Pin 8
Switches
Parameter
ON
OFF
SW1
AM/FM switching. The FE VCC is supplied to pin 62.
FM
AM
SW2
FM IF switching. Pin 51/FE output
FE IF OUT (A)
AC3 (B)
SW3
For conversion gain testing
Conversion gain measurement (A)
Other/purposes
SW4
For switching between noise canceler input and IF output + noise canceler.
AC1 (A)
Other/purposes
SW5
High-speed SD
Other/purposes
SW6
SEEK/STOP (IF BUFF ON/OFF)
STOP
Seek (IF buffer output)
SW7
MUTE ATT 200 k
MUTE 200 k
OFF
SW8
MUTE ATT 30 k
MUTE 30 k
OFF
SW9
For pilot cancellation testing
When pilot cancellation is used
When pilot cancellation is not used
SW10
Mute off (pin 33)
MUTE OFF
MUTE ON
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA1787NM | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| LA1787NM | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| LA1800 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP22 |
| LA1805 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
| LA1806 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA1787M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios |
| LA1787M_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios |
| LA1787M-MPB-E | 功能描述:調(diào)諧器 CAR RADIO TUNER RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| LA1787NM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC |
| LA1787NM_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。