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參數(shù)資料
| 型號(hào)： | LT6700HS6-1 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
| 中文描述： | DUAL COMPARATOR, 29000 ns RESPONSE TIME, PDSO6 |
| 封裝： | 1 MM HEIGHT, PLASTIC, MO-193, TSOT-23, 6 PIN |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 237K |
| 代理商： | LT6700HS6-1 |
LT6700-1/LT6700-2/LT6700-3
10
6700123fb
To create window functions optimized for detecting entry
into a window (i.e. where the output is to indicate a
“coming into spec” condition, as with the examples in
Figure 1), the nominal resistor values are selected as
follows:
R1
≤
400k (this sets the divider current >> I
B
of inputs)
R2 = R1 (1.02 V
H
/V
L
– 1)
R3 = R1 (2.54 V
H
– 1.02 V
H
/V
L
)
The worst-case variance of the trip-points is related to the
specified threshold limits of the LT6700 device and the
basic tolerance of divider resistors used. For resistor
tolerance R
TOL
(e.g. 0.01 for 1%), the worst-case trip-
point voltage (either V
H
or V
L
) deviations can be predicted
as follows (italicized values are taken from the datasheet,
expressed in volts):
Max dev V
TRIP
↑
=
±
V
TRIPnom
{2 R
TOL
[(V
TRIPnom
– 0.4)
/ V
TRIPnom
] + 1.25 (V
TH(R)max
– V
TH(R)min
)}
Max dev V
TRIP
↓
=
±
V
TRIPnom
{2 R
TOL
[(V
TRIPnom
– 0.39)
/ V
TRIPnom
] + 1.27 (V
TH(F)max
– V
TH(F)min
)}
Generating an External Reference Signal
In some applications, it would be advantageous to have
access to a signal that is directly related to the internal
400mV reference, even though the reference itself is not
available externally. This can be accomplished to a reason-
able degree by using an inverting comparator section as a
“bang-bang” servo, establishing a nominal voltage, on an
integration capacitor, that is scaled to the reference. This
method is used in Figure 2, where the reference level has
APPLICATIU
W
U
U
Figure 1. Simple Window Comparator
been doubled to drive a resistor bridge. The section B
output cycles on and off to swing the section B input
between its hysteresis trip points as the load capacitor
charges and discharges in a shallow, controlled fashion.
The multiplied reference signal also contains ripple that is
the hysteresis multiplied by the same factor, so additional
filtering is performed at the sense node of the bridge to
prevent comparator chatter in the section A comparator,
which is performing the actual conditional decision for the
circuit.
Instrumentation Grade Pulse Width Modulator (PWM)
Comparators with hysteresis are frequently employed to
make simple oscillator structures, and the LT6700 lends
itself nicely to forming a charge-balancing PWM function.
The circuit shown in Figure 3 forms a PWM that is intended
to transmit an isolated representation of a voltage differ-
LT6700-1
V
S
GND
1
5
R3
301k
R2
6.04k
33k
+INA
–INB OUTB
OUTA
V
OUT
V
S
V
L
V
H
3.3V
3.3V Supply Monitor
5V Supply Monitor
R1
40.2k
2
6
0.1
μ
F
V
HIGH = (3.1V < V
S
< 3.5V)
HYSTERESIS ZONES
APPROXIMATELY
2% OF TRIP VOLTAGE
3
4
LT6700-1
V
S
GND
1
5
487k
6.04k
33k
+INA
–INB OUTB
OUTA
5V
40.2k
2
6
0.1
μ
F
V
HIGH = (4.7V < V
S
< 5.3V)
3
4
6700123 F01
LT6700-1
V
S
10k
GND
1
5
+INA
–INB OUTB
OUTA
2
6
3
4
499k
R
TH
T
R
TH
= 1M (e.g., YSI 44015, 1.00M
AT 25
°
C)
R
SET
= R
TH
AT T
SET
*RESISTANCE MAY REQUIRE OPTIMIZATION FOR OPERATION
OVER INTENDED R
TH
AND V
SUPPLY
RANGES
HYSTERESIS ZONE
≈
0.4
°
C
R
SET
2 V
REF
499k
220k
220k*
T < T
SET
3.3
μ
F
3.3
μ
F
1.4V TO 18V
(I
S
≈
10
μ
A)
0.1
μ
F
6700123 F02
Figure 2. Micropower Thermostat/Temperature Alarm
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT6700HS6-2 | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
| LT6700HS6-3 | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
| LT6700CS6-2 | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
| LT6700CS6-3 | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
| LT6700IS6-2 | Micropower, Low Voltage, SOT-23, Dual Comparator with 400mV Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT6700HS6-1#PBF | 制造商:Linear Technology 功能描述:Comparator Dual 18V 6-Pin TSOT-23 制造商:Linear Technology 功能描述:SC-Comps/Micropower, Cut Tape uPower Dual Comparator + 400mV Ref |
| LT6700HS6-1#TR | 功能描述:IC COMP DUAL 400MV REF TSOT23-6 RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:Over-The-Top® 標(biāo)準(zhǔn)包裝:25 系列:- 類型:帶電壓基準(zhǔn) 元件數(shù):4 輸出類型:CMOS，開路漏極，TTL 電壓 - 電源，單路/雙路(±):2 V ~ 11 V，±1 V ~ 5.5 V 電壓 - 輸入偏移（最小值）:10mV @ 5V 電流 - 輸入偏壓（最小值）:- 電流 - 輸出（標(biāo)準(zhǔn)）:0.015mA @ 5V 電流 - 靜態(tài)（最大值）:8.5µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:12µs 磁滯:50mV 工作溫度:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
| LT6700HS6-1#TRM | 功能描述:IC COMP DUAL 400MV REF TSOT23-6 RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:Over-The-Top® 標(biāo)準(zhǔn)包裝:25 系列:- 類型:帶電壓基準(zhǔn) 元件數(shù):4 輸出類型:CMOS，開路漏極，TTL 電壓 - 電源，單路/雙路(±):2 V ~ 11 V，±1 V ~ 5.5 V 電壓 - 輸入偏移（最小值）:10mV @ 5V 電流 - 輸入偏壓（最小值）:- 電流 - 輸出（標(biāo)準(zhǔn)）:0.015mA @ 5V 電流 - 靜態(tài)（最大值）:8.5µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:12µs 磁滯:50mV 工作溫度:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
| LT6700HS6-1#TRMPBF | 功能描述:IC COMP DUAL 400MV REF TSOT23-6 RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:Over-The-Top® 標(biāo)準(zhǔn)包裝:25 系列:- 類型:帶電壓基準(zhǔn) 元件數(shù):4 輸出類型:CMOS，開路漏極，TTL 電壓 - 電源，單路/雙路(±):2 V ~ 11 V，±1 V ~ 5.5 V 電壓 - 輸入偏移（最小值）:10mV @ 5V 電流 - 輸入偏壓（最小值）:- 電流 - 輸出（標(biāo)準(zhǔn)）:0.015mA @ 5V 電流 - 靜態(tài)（最大值）:8.5µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:12µs 磁滯:50mV 工作溫度:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
| LT6700HS6-1#TRPBF | 功能描述:IC COMP DUAL 400MV REF TSOT23-6 RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:Over-The-Top® 標(biāo)準(zhǔn)包裝:25 系列:- 類型:帶電壓基準(zhǔn) 元件數(shù):4 輸出類型:CMOS，開路漏極，TTL 電壓 - 電源，單路/雙路(±):2 V ~ 11 V，±1 V ~ 5.5 V 電壓 - 輸入偏移（最小值）:10mV @ 5V 電流 - 輸入偏壓（最小值）:- 電流 - 輸出（標(biāo)準(zhǔn)）:0.015mA @ 5V 電流 - 靜態(tài)（最大值）:8.5µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:12µs 磁滯:50mV 工作溫度:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
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