LM1818 반도체 회로 부품 판매점
Electronically Switched Audio Tape System
|
|
 National Semiconductor |
April 1987
LM1818 Electronically Switched Audio Tape System
General Description
The LM1818 is a linear integrated circuit containing all of the
active electronics necessary for building a tape recorder
deck (excluding the bias oscillator) The electronic functions
on the chip include a microphone and playback preamplifi-
er record and playback amplifiers a meter driving circuit
and an automatic input level control circuit The IC features
complete internal electronic switching between the record
and playback modes of operation The multipole switch
used in previous systems to switch between record and
playback modes is replaced by a single pole switch thereby
allowing for more flexibility and reliability in the recorder de-
sign
Monaural operation Figure 9
Features
Y Electronic record play switching
Y 85 dB power supply rejection
Y Motional peak level meter circuitry
Y Low noise preamplifier circuitry
Y 3 5V to 18V supply operation
Y Provision for external low noise input transistor
Typical Applications
www.DataSheet.net/
FIGURE 1 Stereo Application Circuit (Left Channel Shown) VS e 15V
Order Number LM1818N
See NS Package Number N20A
TL H 7894 – 1
C1995 National Semiconductor Corporation TL H 7894
RRD-B30M115 Printed in U S A
Datasheet pdf - http://www.DataSheet4U.co.kr/
Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
18V
Package Dissipation (Note 1)
1560 mW
Storage Temperature
b65 C to a150 C
Operating Temperature
Junction Temperature
Minimum Voltage on Any Pin
Maximum Voltage on Pins 2 and 5
Maximum Current Out of Pin 14
Lead Temperature (Soldering 10 sec )
0 C to a70 C
150 C
b0 1 VDC
0 1 VDC
5 mADC
260 C
Electrical Characteristics VCC e 6V TA e 25 C See Test Circuits (Figures 2 and 3)
Parameter
Conditions
Min Typ Max
Units
Operating Supply Voltage Range
Supply Current
Test Circuit (Figure 2)
3 5 18 VDC
5 12 mA
Turn-ON Time
Externally Programmable
50 400
ms
Playback Signal to Noise
DIN Eq (3180 and 120 ms) 20 – 20 kHz
RS e 0 Unweighted VREF e 1 mV
at 400 Hz
74
dB
Record Signal to Noise
Flat Gain 20 – 20 kHz RS e0
ALC OFF VREF e 1 mV
at 1 kHz Unweighted
69 dB
Fast Turn-ON Charging Current
Pins 16 and 17
200 mA
Record and Playback Preamplifier
Open Loop Voltage Gain
f e 100 Hz
100 dB
Preamplifier Input Impedance
Pin 16 or Pin 17
50 kX
Preamplifier Input Referred PSRR
1 kHz Flat Gain
85 dB
Bias Voltage on Pin 18 in Play Mode
or Pin 15 in Record Mode
05 V
Monitor Amplifier Input
Bias Current
Pins 11 and 12
0 5 mA
Monitor Amplifier Open
Loop Voltage Gain
Record or Playback f e 100 Hz
www.DataSheet.net/
80
dB
Monitor Output Current Capability
Pins 9 and 10 Source Current Available 400 750
mA
Monitor Amplifier Output Swing
THD All Amplifiers
RL e 10k AC Load
At 1 kHz 40 dB Closed Loop Gain
1 2 1 65
0 05
Vrms
%
Record-Playback Switching Time
As in Test Circuit
50 ms
Input ALC Range
Input Voltage on ALC Pin for
Start of ALC Action
DVIN for DVOUT e 8 dB
40 dB
25 mVrms
ALC Input Impedance
2 kX
ALC Attack Time
C13 e 10 mF
7 ms
ALC Decay Time
R17 e % C13 e 10 mF
30 sec
Meter Output Gain
100 mVrms at 1 kHz into Pin 4
800 mVDC
Meter Output Current Capability
2 mADC
Note 1 For operation in ambient temperatures above 25 C the device must be derated based on a 150 C maximum junction temperature and a thermal resistance
of 80 C W junction to ambient
2
Datasheet pdf - http://www.DataSheet4U.co.kr/
|
PDF 파일 내의 페이지 : 총 14 페이지
제조업체: National Semiconductor
( national )
LM1818 data
데이터시트 다운로드 :
[ LM1818.PDF ]
[ LM1818 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
LM1812
ULTRASONIC TRANSCEIVER - National Semiconductor
LM1815
Adaptive Variable Reluctance Sensor Amplifier - National Semiconductor
LM1815
LM1815 Adaptive Variable Reluctance Sensor Amplifier (Rev. F) - Texas Instruments
LM1815EP
LM1815EP Enhanced Plastic Adaptive Variable Reluctance Sensor Amplifier (Rev. B) - Texas Instruments
LM1815EP
Enhanced Plastic Adaptive Variable Reluctance Sensor Amplifier - National Semiconductor
LM1818
Electronically Switched Audio Tape System - National Semiconductor
LM1818
LM1818 Electronically Switched Audio Tape System (Rev. A) - Texas Instruments
LM1818N
Electronically Switched Audio Tape System - National Semiconductor
LM1819
Air-Core Meter Driver - National Semiconductor