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参数资料
| 型号： | LT1671CS8 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 运动控制电子 |
| 英文描述： | 60ns, Low Power, Single Supply, Ground-Sensing Comparator |
| 中文描述： | COMPARATOR, 4000 uV OFFSET-MAX, 85 ns RESPONSE TIME, PDSO8 |
| 封装： | 0.150 INCH, PLASTIC, SOP-8 |
| 文件页数： | 12/12页 |
| 文件大小： | 199K |
| 代理商： | LT1671CS8 |
12
LT1671
LINEAR TECHNOLOGY CORPORATION 1998
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
G
FAX: (408) 434-0507
G
www.linear-tech.com
1671fs, sn1671 LT/TP 0499 4K PRINTED IN USA
TYPICAL APPLICATIO
N
U
4MHz Adaptive Trigger Circuit
Line and fiber-optic receivers often require an adaptive
trigger to compensate for variations in signal amplitude
and DC offsets. The circuit in Figure 9 triggers on 2mV to
175mV signal from 100Hz to 4MHz while operating from
a single 5V rail. A1, operating at a gain of 15, provides
wideband AC gain. The output of this stage biases a 2-way
peak detector (Q1 through Q4). The maximum peak is
stored in Q2’s emitter capacitor, while the minimum
excursion is retained in Q4’s emitter capacitor. The DC
value of the midpoint of A1’s output signal appears at the
junction of the 500pF capacitor and the 3M
units. This
point always sits midway between the signal’s excursions,
regardless of absolute amplitude. This signal-adaptive
voltage is buffered by A2 to set the trigger voltage at the
PART NUMBER
LT1016
LT1116
LT1394
LT1720
UltraFast is a trademark of Linear Technology Corporation.
DESCRIPTION
UltraFast
TM
Precision Comparator
12ns Single Supply Ground-Sensing Comparator
UltraFast Single Supply Comparator
UltraFast Dual Single Supply Comparator
COMMENTS
Industry Standard 10ns Comparator
Single Supply Version of LT1016
7ns, 6mA Single Supply Comparator
Dual 4.5ns, 4mA Single Supply Comparator
RELATED PARTS
Figure 9. 4MHz Single Supply Adaptive Trigger. Output Comparator’s Threshold Varies Ratiometrically with
Input Amplitude, Maintaining Data Integrity over >85:1 Input Amplitude Range
LT1671’s positive input. The LT1671’s negative input is
biased directly from A1’s output. The LT1671’s output, the
circuit’s output, is unaffected by >85:1 signal amplitude
variations. Bandwidth limiting in A1 does not affect trig-
gering because the adaptive trigger threshold varies
ratiometrically to maintain circuit output.
Figure 10 shows operating waveforms at 4MHz. Trace A’s
input produces Trace B’s amplified output at A1. The
comparator’s output is Trace C.
5V
–
+
A1
LT1227
–
+
A2
LT1006
INPUT
5V
5V
5V
TRIGGER
OUT
1671 F09
500pF
0.1
μ
F
510
470
470
750
36
1
3
2
4
14
13
15
5
6
12
10
11
2k
10
μ
F
2k
2k
+
0.1
μ
F
0.1
μ
F
0.005
μ
F
0.005
μ
F
100
μ
F
+
Q1, Q2, Q3, Q4 = CA3096 ARRAY: TIE SUBSTRATE (PIN 16) TO GROUND
= 1N4148
–
+
LT1671
Q1
Q2
Q3
Q4
3M
3M
Figure 10. Adaptive Trigger
Responding to a 4MHz, 5mV Input.
Input Amplitude Variations from 2mV
to 175mV Are Accommodated
A = 10mV/DIV
B = 50mV/DIV
C = 1mV/DIV
50ns/DIV
1671F10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1671CS8#PBF | 功能描述:IC COMP GRND-SENSNG LOWPWR 8SOIC RoHS:是 类别:集成电路 (IC) >> 线性 - 比较器 系列:- 标准包装:1 系列:- 类型:通用 元件数:1 输出类型:CMOS，开路集电极，TTL 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V 电压 - 输入偏移（最小值）:7mV @ 5V 电流 - 输入偏压（最小值）:0.25µA @ 5V 电流 - 输出（标准）:84mA @ 5V 电流 - 静态（最大值）:120µA CMRR, PSRR（标准）:- 传输延迟（最大）:600ns 磁滞:- 工作温度:-40°C ~ 85°C 封装/外壳:SC-74A，SOT-753 安装类型:表面贴装 包装:剪切带 (CT) 产品目录页面:1268 (CN2011-ZH PDF) 其它名称:*LMV331M5*LMV331M5/NOPBLMV331M5CT |
| LT1671CS8#PBF | 制造商:Linear Technology 功能描述:Micropower Comparator IC |
| LT1671CS8#TR | 功能描述:IC COMPARATOR 60NS LOW PWR 8SOIC RoHS:否 类别:集成电路 (IC) >> 线性 - 比较器 系列:- 标准包装:25 系列:- 类型:带电压基准 元件数:4 输出类型:CMOS，开路漏极，TTL 电压 - 电源，单路/双路(±):2 V ~ 11 V，±1 V ~ 5.5 V 电压 - 输入偏移（最小值）:10mV @ 5V 电流 - 输入偏压（最小值）:- 电流 - 输出（标准）:0.015mA @ 5V 电流 - 静态（最大值）:8.5µA CMRR, PSRR（标准）:80dB CMRR，80dB PSRR 传输延迟（最大）:12µs 磁滞:50mV 工作温度:0°C ~ 70°C 封装/外壳:16-DIP（0.300"，7.62mm） 安装类型:通孔 包装:管件 |
| LT1671CS8#TRPBF | 功能描述:IC COMP GRND-SENSNG LOWPWR 8SOIC RoHS:是 类别:集成电路 (IC) >> 线性 - 比较器 系列:- 标准包装:25 系列:- 类型:带电压基准 元件数:4 输出类型:CMOS，开路漏极，TTL 电压 - 电源，单路/双路(±):2 V ~ 11 V，±1 V ~ 5.5 V 电压 - 输入偏移（最小值）:10mV @ 5V 电流 - 输入偏压（最小值）:- 电流 - 输出（标准）:0.015mA @ 5V 电流 - 静态（最大值）:8.5µA CMRR, PSRR（标准）:80dB CMRR，80dB PSRR 传输延迟（最大）:12µs 磁滞:50mV 工作温度:0°C ~ 70°C 封装/外壳:16-DIP（0.300"，7.62mm） 安装类型:通孔 包装:管件 |
| LT1671CS8PBF | 制造商:Linear Technology 功能描述:Comparator 60ns Low Power 5V SOIC8 |
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