|
|
|
부품번호 | LM319 기능 |
|
|
기능 | Dual Comparator | ||
제조업체 | Linear Technology | ||
로고 | |||
전체 12 페이지수
LT119A/LT319A
LM119/LM319
Dual Comparator
FEATURES
n Guaranteed Maximum 0.5mV Input Offset Voltage
n Input Protection Diodes
n Operates From Single 5V Supply
n 25mA Drive Capability
n 80ns Response Time
APPLICATIONS
n Window Detectors
n High Speed One Shot
n Relay/Lamp Drivers
n Voltage Controlled Oscillators
DESCRIPTION
The LT®119A is an improved version of the LM119 dual
comparator. It features lower input offset voltage and
offset current, higher voltage gain, guaranteed common
mode rejection and input protection diodes.
The LT119A is capable of operation over a supply range
from 5V to ±15V and can drive 25mA loads from each
open collector output. A separate ground pin allows the
LT119A to isolate system grounds.
Linear Technology Corporation’s advanced processing,
design techniques and reliability make the LT119A/LT319A
an ideal choice over previous devices in most comparator
applications.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Window Detector*
5V
VUT 3 + 10
500Ω
1/2 LT319A 1
TTL OUTPUT
VIN 4 – 2
VOUT = 5V FOR
8+
1/2 LT319A
6
VLT ≤ VIN ≤ VUT
VOUT = 0V FOR
VIN ≤ VLT OR VIN ≤ VUT
VLT 9 – 7
5
LT119/319 TA1
*ALLOWED WINDOW FOR SINGLE 5V SUPPLY IS 1.2V TO 3.8V
Response Time For Various Input Overdrives
6
5
4
3 20mV
2
1
0
100
50
0
2mV
5mV
VS = ±15V
VRL+
= 500Ω
+ = 5V
TA = 25°C
0 50 100 150 200 250 300 350
TIME (ns)
LT119/319 TA2
119a319afc
1
LT119A/LT319A
LM119/LM319
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: For supply voltages less than ±15V, the maximum input voltage is
equal to the supply voltage.
Note 3: Unless otherwise noted, supply voltage equals ±15V and
VCM = 0V, TA = 25°C. The ground pin is
voltage allowed between the ground pin
grounded. Note that the maximum
and V+ is 18V. Do not tie the
ground pin to V– when the power supply voltage exceeds ±9V. The offset
voltage, offset current and bias current specifications apply for all supply
voltages between ±15V and 5V unless otherwise specified.
Note 4: The offset voltages and currents given are the maximum values
required to drive the output within 1V of either supply with a 1mA load,
thus these parameters define an error band and take into account the
worst case effects of voltage gain and input impedance.
Note 5: Response time specified is for a 100mV input step with 5mV
overdrive.
Note 6: Inputs are protected with back-to-back 5.6V zener diodes. This
limits maximum differential input voltage to ±5V if current is unlimited.
Larger differential input drive is allowed if input current is limited to ±5mA
with external resistance.
TYPICAL PERFORMANCE CHARACTERISTICS
Transfer Function
40
VS = ±15V
35 RL = 1.4k
30 TA = 25°C
25
V ++ = 36V
V ++ = 5V
8
7
6
5
20 4
15 3
10 2
5.0 1
0
–1.0
–0.6 –0.2 0.2
0.6
DIFFERENTIAL INPUT VOLTAGE (mV)
0
1.0
LT119/319 G1
Response Time for Various
Input Overdrives
6
5
4
3
2mV
5mV
VS = ±15V
VRL+
= 500Ω
+ = 5V
TA = 25°C
2 20mV
1
0
0
–50
–100
0 50 100 150 200 250 300 350
TIME (ns)
LT119/319 G4
Input Characteristics
400
VS = ±15V
TA = 25°C
300
200
Input Currents
250
VS = ±15V
200
BIAS
150
100 100
0
–100
–10
MAXIMUM
DIFFERENTIAL
INPUT VOLTAGE
–6 –2
2
6
DIFFERENTIAL INPUT VOLTAGE (V)
10
LT119/319 G2
50
OFFSET
0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
LT119/319 G3
Response Time for Various
Input Overdrives
6
5
4 2mV
3
2 20mV
1
5mV
0 VS = 5V
100
VRL+
= 500Ω
+ = 5V
50 TA = 25°C
0
0 50 100 150 200 250 300 350
TIME (ns)
LT119/319 G5
Response Time for Various
Input Overdrives
6
5
4
3 20mV
2
1
VS = 5V
VRL+
= 500Ω
+ = 5V
TA = 25°C
5mV 2mV
0
0
–50
–100
0 50 100 150 200 250 300 350
TIME (ns)
LT119/319 G6
4
119a319afc
4페이지 TYPICAL APPLICATIONS
10-Bit Serial Output A/D Converter
LT119A/LT319A
LM119/LM319
5V
INPUT
5V
0V TO 3.5V
LT1004-1.2
PN4250
20k*
10k
PN4250
5 – 11
1/2 LT119A 12
4+ 3
6
– 5V
4.7k
1N4148
82k
0.1µF †
2N3904
1k 1N4148
3.9k
*1% FILM
† POLYSTYRENE, MOUNT
– 5V
CAPACITORS CLOSE TOGETHER
CONVERT
COMMAND
INPUT (TTL)
10k*
5V
9+
1000µF † 1/2 LT119A
10 –
8
1N4148
1k
7
39k
74C04
DATA
OUT
1k 15k
CONVERSION TIME = 10ms
* = 1%
CAPACITORS ARE POLYSTYRENE MOUNT
5V IN CLOSE PROXIMITY
LT119/319 TA7
5 Microsecond Sample-and-Hold with Zero Hold Step
15V
+
10µF 4.7k
100Ω
2N2907
12k
0.003µF †
3k
2N2222
240Ω 2N2907
3k
10k
12
2N2907
15V
11
–5
1/2 LT119A
3 +4
20k 6
–15V
*TRIM FOR ZERO VOLTS OUT
WITH ZERO VOLTS IN
† POLYSTYRENE CAPACITOR
5V
0V
1N4148
15V
2N4931
3.3k 9k
10pF
–15V
1k
1k
INPUT
1N4148
9k
SAMPLE
HOLD
2pF
TO 8pF*10 –
1/2 LT119A 7
9+ 8
15V 3k
VOUT
Q VS CLK D
74C74
CLR PRESET
LT119/319 TA8
119a319afc
7
7페이지 | |||
구 성 | 총 12 페이지수 | ||
다운로드 | [ LM319.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
LM310 | Voltage Follower | National Semiconductor |
LM3100 | LM3100 SIMPLE SWITCHER Synchronous 1MHz 1.5A Step-Down Voltage Regulator (Rev. G) | Texas Instruments |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |