- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377664 > LS6511 (LSI Corporation) PIR SENSOR INTERFACE PDF資料下載
參數(shù)資料
| 型號： | LS6511 |
| 廠商： | LSI Corporation |
| 英文描述： | PIR SENSOR INTERFACE |
| 中文描述： | 紅外傳感器接口 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 46K |
| 代理商： | LS6511 |
FEATURES:
Direct Interface with PIR Sensor
Two-Stage Differential Amplifier
Amplifier Gain and Bandwidth externally controlled
True and Complementary Output Drives
Separate digital filters for processing positive and
negative input signals
Single Pulse/Dual Pulse/ Concurrent Pulse Detection
Adjustable Output Pulse Width
Optional 5V Shunt Regulator Output
50μA Typical Supply Current
Undervoltage Detection
LS6511(DIP); LS6511-S (SOIC) - See Figure 1
APPLICATIONS:
Security system intrusion detection, automatic doors, motion
triggered events such as remote animal photography.
DESCRIPTION (See Figure 5)
The LS6511 is a CMOS integrated circuit, designed for detecting
motion from a PIR Sensor and initiating appropriate responses.
DIFFERENTIAL AMPLIFIER
Each stage of the two stage Differential Amplifier can be set to
have its own amplification and bandwidth. The two inputs to the
first stage allow for single-ended or differential connection to PIR
Sensors. This stage can be biased anywhere in its dynamic
range. The second stage is internally biased so that the Window
Comparator’s lower and higher thresholds can be fixed relative to
this bias. Signal levels as low as 100μV can be detected.
WINDOW COMPARATOR
The Window Comparator provides noise filtering by enabling only
those signals equal to or greater than a fixed threshold at the
output of the Differential Amplifier to appear at the 2 outputs of
the Window Comparator. One output detects positive input
signals while the other output detects negative input signals.
COMPARATOR DIGITAL FILTER
The outputs of the Window Comparator are filtered so that
motion must be present for a certain duration before it can be
recognized and appear as pulses at the Digital Filter outputs. An
external RC network sets the duration time. Nominal duration is
50ms.
MODE SELECT
A tristate input pin selects how the detected signals are
processed. Single Pulse (SP) Mode is when detection from either
a positive or negative input signal at the Digital Filter outputs will
cause an LED/RELAY output to occur. Concurrent Pulse (CP)
Mode is when detection from a positive and negative input signal
must occur within a specific time before an output will occur.
Dual Pulse (DP) mode is when any two detections within a
specific time will cause an output to occur.
SP Mode = 0; CP Mode = Open; DP Mode = 1.
PIR SENSOR INTERFACE
October 2002
6511-102502-1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
L
L
DIFF. AMP. 2 INPUT (-)
DIFF. AMP. 2 OUTPUT
CP MODE / DP MODE RC
DIGITAL FILTER RC
V
DD
DIFF. AMP 1 INPUT (-)
DIFF. AMP 1 INPUT (+)
5V REGULATOR OUTPUT
MODE SELECT
DURATION TIMER RC
LED/RELAY OUTPUT
PIN ASSIGNMENT - TOP VIEW
FIGURE 1
DIFF. AMP. 1 OUTPUT
V
SS
LED/RELAY OUTPUT
( +
V
)
( -
V
)
PROGRAMMABLE RETRIGGERABLE ONE-SHOTS
Positive and negative input signals at the digital filter outputs will
generate retriggerable one-shot pulses. In the Concurrent Pulse
Mode, outputs from each one-shot must occur together at some
point in time to cause an output to occur. The one-shot pulse
width is programmable using an external RC network. Typical
pulse widths used vary between 1 and 12 seconds.
WINDOW TIMER
In the Dual Pulse Mode any two detections must occur within a
timing window to cause an output to occur. The timing window is
programmable using an external RC network. Typical windows
are between 1 and 5 seconds.
OUTPUT DURATION TIMER
The duration timer is retriggerable and programmable using an
external RC network. Typical duration times are between 0.5 and
15 seconds. Successive input detections will restart the timer.
OUTPUTS
The LED/RELAY Output is an open drain output that will sink
current when an input signal is detected and processed and
when the Power Supply drops below 3.7V (Typical) (Under-
voltage Detection). The Undervoltage Detection will be removed
when the Power Supply rises above 3.9V (Typical). The LED/
RELAY Output performs identically but is opposite in polarity.
The output can sink current from a relay coil returned to a
positive voltage (V
DD
to 9.5V maximum).
SHUNT REGULATOR
The LS6511 includes a 5V Shunt Regulator Output which can be
tied to the V
DD
Pin so that the circuit can be powered from a
higher voltage power supply.
Note:
See Figures 2, 3 and 4 for application schematics.
LSI/CSI
LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405
UL
LS6511
A3800
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LS7061C | 32 BIT BINARY UP COUNTER WITH BYTE MULTIPLEXED THREE-STATE OUTPUTS |
| LS7060C | 32 BIT BINARY UP COUNTER WITH BYTE MULTIPLEXED THREE-STATE OUTPUTS |
| LS7213 | PROGRAMMABLE DIGITAL DELAY TIMER |
| LS7220 | DIGITAL LOCK FOR AUTOMOTIVE IGNITIONS |
| LS7222 | KEYPAD PROGRAMMABLE DIGITAL LOCK |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LS6511N | 制造商:LSI 制造商全稱:LSI 功能描述:Direct Interface with PIR Sensor |
| LS6512 | 制造商:LSI 制造商全稱:LSI 功能描述:Direct Interface with PIR Sensor |
| LS6513 | 制造商:LSI 制造商全稱:LSI 功能描述:Direct Interface with PIR Sensor |
| LS6525 | 制造商:LSI 制造商全稱:LSI 功能描述:BATTERY POWERED LOW-POWER PIR SENSOR INTERFACE |
| LS6526 | 制造商:LSI 制造商全稱:LSI 功能描述:BATTERY POWERED LOW-POWER PIR SENSOR INTERFACE |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。