công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

MC146010ED bảng dữ liệu(PDF) 9 Page - Freescale Semiconductor, Inc

tên linh kiện MC146010ED
Giải thích chi tiết về linh kiện  Low Power CMOS Photoelectric Smoke Detector IC
Download  18 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC146010ED bảng dữ liệu(HTML) 9 Page - Freescale Semiconductor, Inc

Back Button MC146010ED Datasheet HTML 5Page - Freescale Semiconductor, Inc MC146010ED Datasheet HTML 6Page - Freescale Semiconductor, Inc MC146010ED Datasheet HTML 7Page - Freescale Semiconductor, Inc MC146010ED Datasheet HTML 8Page - Freescale Semiconductor, Inc MC146010ED Datasheet HTML 9Page - Freescale Semiconductor, Inc MC146010ED Datasheet HTML 10Page - Freescale Semiconductor, Inc MC146010ED Datasheet HTML 11Page - Freescale Semiconductor, Inc MC146010ED Datasheet HTML 12Page - Freescale Semiconductor, Inc MC146010ED Datasheet HTML 13Page - Freescale Semiconductor, Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 18 page
background image
Sensors
Freescale Semiconductor
9
MC146010
PIN DESCRIPTIONS
C1 (PIN 1)
A capacitor connected to this pin as shown in Figure 5
determines the gain of the on-chip photo amplifier during
pushbutton test and chamber sensitivity test (high gain). The
capacitor value is chosen such that the alarm tripped from
background reflections in the chamber during pushbutton
test.
AV = 1+(C1/10) where C1 is in pF. CAUTION: The value of
the closed-loop gain should not exceed 10,000.
Resistor R15 should be installed in series with C1 for lower
gains. R15 =[1/(12
√C1]-680 where R15 is in ohms and C1 is
in farads.
C2 (PIN 2)
A capacitor connected to this pin as shown in Figure 5
determines the gain of the on-chip photo amplifier during
pushbutton test and chamber sensitivity tests.
AV = 1+(C2/10) where C1 is in pF. This gain increases
about 10% during IRED pulse, after two consecutive local
smoke detections.
For proper compensation, resistor R14 must be installed in
series with C2. R14 =[1/(12
√C2]-680 where R14 is in ohms
and C1 is in farads.
DETECT (PIN 3)
This input to the high-gain pulse amplifier is tied to the
cathode of an external photodiode. The photodiode should
have low capacitance and low dark leakage current. The
diode must be shunted by a load resistor and is operated at
zero bias.
The Detect input must be ac/dc decoupled from all other
signals, VDD and VSS. Lead length and/or foil traces to this
pin must be minimized also. See Figure 3.
The device has a sampling speed-up mode after the first
smoke sample is detected. The speed-up frequency is one
smoke sample about every 2 seconds for the duration of a
smoke condition. It will take no-smoke samples to return to a
standby mode. Once out of a smoke condition, the IC will
continue to sample for smoke about every 8 seconds.
STROBE (PIN 4)
This output provides the strobed, regulated voltage
referenced to VDD. The temperature coefficient of this voltage
is ±0.2%/°C maximum from -10 to 60°C. The supply-voltage
coefficient (line regulation) is ±0.2%/V maximum from 6.0 to
12 V. Strobe is tied to external resistor string R8, R9 and R10.
VDD (PIN 5)
This pin is connected to the positive supply potential and
may range from +6.0 to +12 V with respect to VSS.
CAUTION:
In battery-powered applications, reverse-
polarity protection must be provided exter-
nally.
IRED (PIN 6)
This output provides pulsed base current for external NPN
transistor Q1 used as the infrared emitter driver. Q1 must
have a
β ≥ 100. At 10 mA, the temperature coefficient of the
output voltage is typically +0.5%/°C from -10 to 60°C. The
supply-voltage coefficient (line regulation) is ±0.2%/V
maximum from 6.0 to 12 V. The IRED pulse width (active-
high) is determined by external components R1 and C3. With
a 100 k
Ω/1500 pF combination, the nominal width is 105 µs.
To minimize noise impact, IRED is active near the end of
strobe pulses for smoke tests, chamber sensitivity test, and
pushbutton test. For the above mentioned width, IRED will be
active for the last 105
µs of strobe pulse.
I/O (PIN 7)
This pin can be used to connect up to 40 units together in
a wired-OR configuration for common signaling. VSS is used
as the return. An on-chip current sink minimizes noise pickup
during non-smoke conditions and eliminates the need for an
external pull-down resistor to complete the wired-OR.
Remote units at lower supply voltages do not draw excessive
current from a sending unit at higher supply voltage.
I/O can also be used to activate escape lights, auxiliary
alarms, remote alarms and/or auto-dialers.
As an input, this pin feeds a positive-edge-triggered flip-
flop whose output is sampled nominally every 1 second
during standby (using typical component values). Once the
first I/O remote smoke sample is detected, a second sample
approximately 10 ms later will happen to confirm a remote
smoke condition. If both samples are found to be high, the
unit will start sounding an alarm.
I/O is disabled by the on-chip power-on reset to eliminate
nuisance signaling during battery changes or system power-
up.
If unused, I/O must be left unconnected.
BRASS (PIN 8)
This half of the push-pull driver output is connected to the
metal support electrode of the piezoelectric audio transducer
and to the horn-starting resistor. A continuous modulated
tone from the transducer is a smoke alarm indicating either
local or remote smoke. A short beep or chirp is a trouble
alarm indicating a low supply or degraded chamber
sensitivity. A series of short beeps or chirps during a
pushbutton test indicate a previous alarm for detected smoke
(Alarm memory feature).
SILVER (PIN 9)
This half of the push-pull driver output is connected to the
ceramic electrode of a piezoelectric transducer and to the
horn-starting capacitor.
FEEDBACK (PIN 10)
This input is connected to both the feedback electrode of
a self-resonating piezoelectric transducer and the horn-
starting resistor and capacitor through current limiting resistor
R4. If unused, the pin must be tied to VSS or VDD.
LED (PIN11)
This active-low open drain output directly drives an
external visible LED at the pulse rate indicated below. The
pulse width is equal to the OSC period.


Số phần tương tự - MC146010ED

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Freescale Semiconductor...
MC146010ED FREESCALE-MC146010ED Datasheet
1Mb / 18P
   LOW POWER CMOS PHOTOELECTRIC SMOKE DETECTOR IC
More results

Mô tả tương tự - MC146010ED

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Freescale Semiconductor...
MC146012 FREESCALE-MC146012 Datasheet
1Mb / 18P
   LOW POWER CMOS PHOTOELECTRIC SMOKE DETECTOR IC
MC146010 FREESCALE-MC146010 Datasheet
1Mb / 18P
   LOW POWER CMOS PHOTOELECTRIC SMOKE DETECTOR IC
MC146012 FREESCALE-MC146012_07 Datasheet
356Kb / 18P
   Low Power CMOS Photoelectric Smoke Detector IC
logo
SHANGHAI BELLING CO., L...
BL59A12 BELLING-BL59A12 Datasheet
271Kb / 8P
   PHOTOELECTRIC SMOKE DETECTOR IC
BL59A10 BELLING-BL59A10 Datasheet
244Kb / 8P
   PHOTOELECTRIC SMOKE DETECTOR IC
logo
NXP Semiconductors
MC14467-1 NXP-MC14467-1 Datasheet
288Kb / 8P
   Low-Power CMOS Ionization Smoke Detector IC
Rev 4, 05/2005
logo
Freescale Semiconductor...
MC14467-1 FREESCALE-MC14467-1 Datasheet
238Kb / 8P
   Low-Power CMOS Ionization Smoke Detector IC
MC14467-1 FREESCALE-MC14467-1_07 Datasheet
256Kb / 9P
   Low-Power CMOS Ionization Smoke Detector IC
logo
Renesas Technology Corp
RAA239101 RENESAS-RAA239101 Datasheet
258Kb / 4P
   Photoelectric Smoke Detector AFE IC
Jun 27, 2022
logo
Gamewell-FCI by Honeywe...
PSD-7155 GAMEWELL-FCI-PSD-7155 Datasheet
66Kb / 2P
   Photoelectric smoke detector
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com