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参数资料
| 型号： | LTC1540IS8 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 运动控制电子 |
| 英文描述： | Nanopower Comparator with Reference |
| 中文描述： | COMPARATOR, 15000 uV OFFSET-MAX, 70000 ns RESPONSE TIME, PDSO8 |
| 封装： | 0.150 INCH, PLASTIC, SO-8 |
| 文件页数： | 5/12页 |
| 文件大小： | 247K |
| 代理商： | LTC1540IS8 |
5
LTC1540
PI
FU
CTIO
N
S
U
U
GND (Pin 1):
Ground. Connect to V
–
for single supply
operation.
V
–
(Pin 2):
Negative Supply. Potential should be more
negative than GND. Connect to ground for single supply
operation.
IN
+
(Pin 3)
: Noninverting Comparator Input. Input com-
mon mode range from V
–
to V
+
– 1.3V. Input current
typically 10pA at 25
°
C.
IN
–
(Pin 4):
Inverting Comparator Input. Input common
mode range from V
–
to V
+
– 1.3V. Input current typically
10pA at 25
°
C.
HYST (Pin 5):
Hysteresis Input. Connect to REF if not
used. Input voltage range is from V
REF
to V
REF
– 50mV.
REF (Pin 6):
Reference Output. 1.182V with respect
to V
–
. Can source up to 1mA and sink 10
μ
A at 25
°
C. Drive
0.01
μ
F bypass capacitor without oscillation.
V
+
(Pin 7):
Positive Supply operating voltage is from 2V
to 11V.
OUT (Pin 8):
Comparator CMOS Output. Swings from
GND to V
+
. Output can source up to 40mA and sink 5mA.
1540 PD
1
2
3
4
8
7
6
5
IN
+
IN
–
HYST
REF
V
+
OUT
–
+
V
–
GND
LTC1540
The LTC1540 is a nanopower comparator with a built-in
1.182V reference. Features include programmable hyster-
esis, wide supply voltage range (2V to 11V) and the ability
of the reference to drive up to a 0.01
μ
F capacitor without
oscillation. The comparator’s CMOS outputs can source
up to 40mA while supply current glitches that normally
occur when switching logic states, have been eliminated.
Power Supplies
The comparator operates from a single 2V to 11V supply.
The LTC1540 includes a separate ground for the compara-
tor output stage, allowing a split supply ranging from
±
1V
to
±
5.5V. Connecting V
–
to GND will allow single supply
operation. If the comparator output is required to source
more than 1mA, or the supply source impedance is high,
V
+
should be bypassed with a 0.1
μ
F capacitor.
Comparator Inputs
The comparator inputs can swing from the negative supply,
V
–
, to within 1.3V (max) of the positive supply V
+
. The
inputs can be forced 300mV below V
–
or above V
+
without
damage and the typical input leakage current is only
±
10pA.
APPLICATIO
S I
FOR
ATIO
U
W
U
U
Comparator Output
The comparator output swings between GND and V
+
to
assure TTL compatibility with a split supply. The output is
capable of sourcing up to 40mA and sinking up to 5mA
while still maintaining nanoampere quiescent currents.
The output stage does not generate crowbar switching
currents during transitions which helps minimize parasitic
feedback through the supply pins.
Voltage Reference
The internal bandgap reference has a voltage of 1.182V
referenced to V
–
. The reference accuracy is
±
2.0% from
0
°
C to 70
°
C. It can source up to 1mA and sink up to 10
μ
A
with a 5V supply. The reference can drive a bypass
capacitor of up to 0.01
μ
F without oscillation and by
inserting a series resistor, capacitance values up to 10
μ
F
can be used (Figure 1).
Figure 2 shows the resistor value required for different
capacitor values to achieve critical damping. Bypassing
the reference can help prevent false tripping of the com-
parators by preventing glitches on V
+
or reference load
transients from disturbing the reference output voltage.
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PDF描述 |
|---|---|
| LTC1540 | Nanopower Comparator with Reference |
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| LTC1540CMS8 | Nanopower Comparator with Reference |
| LTC1540CS8 | Nanopower Comparator with Reference |
| LTC1540I | Advanced LinEPIC Self-Calibrating (Self-Cal) Precision Operational Amplifier 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1540IS8#PBF | 功能描述:IC COMP NANOPOWER W/REF 8-SOIC 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 |
| LTC1540IS8#PBF | 制造商:Linear Technology 功能描述:Micropower Comparator IC |
| LTC1540IS8#TR | 功能描述:IC COMPARATOR 2% VOLT REF 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 |
| LTC1540IS8#TRPBF | 功能描述:IC COMP NANOPOWER W/REF 8-SOIC 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 |
| LTC1540IS8PBF | 制造商:Linear Technology 功能描述:Comparator Single +/-5.5V/11V SOIC8 |
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