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ADM13305 の電気的特性と機能

ADM13305のメーカーはAnalog Devicesです、この部品の機能は「Dual Processor Supervisors」です。


製品の詳細 ( Datasheet PDF )

部品番号 ADM13305
部品説明 Dual Processor Supervisors
メーカ Analog Devices
ロゴ Analog Devices ロゴ 




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ADM13305 Datasheet, ADM13305 PDF,ピン配置, 機能
FEATURES
Dual supervisory circuits
Supply voltage range of 2.7 V to 5.5 V
Pretrimmed threshold options: 1.8 V, 2.5 V, 3.3 V, and 5 V
Adjustable 0.6 V voltage reference
Maximum supply current of 40 μA
140 ms (minimum) reset timeout
Watchdog timer with 1.6 sec (typical) timeout
RESET valid from VDD ≥ 1.1 V
Push-pull RESET and RESET outputs
8-lead, narrow body SOIC package
Temperature range: −40°C to +85°C
APPLICATIONS
Supervising DSPs/microcontrollers
Industrial and portable equipment
Wireless systems
Notebook/desktop computers
GENERAL DESCRIPTION
The ADM13305 is a dual voltage supervisor designed to
monitor two supplies and provide a reset signal to DSP and
microprocessor-based systems.
There are five models available, all of which feature a combination
of internally pretrimmed undervoltage threshold options for
monitoring 1.8 V, 2.5 V, 3.3 V, and 5 V supplies. There is also
an adjustable input option with an undervoltage threshold voltage
of 0.6 V.
The ADM13305-18, ADM13305-25, and ADM13305-33 models
have two internally fixed thresholds. The ADM13305-4 and
ADM13305-5 offer one internally fixed threshold and one
externally programmable threshold via a resistor string. See
the Ordering Guide for a list of all available options.
During power-up, RESET is asserted when the supply voltage
exceeds 1.1 V. The device then monitors the SENSEv input pins
and holds the RESET output low as long as either of the SENSEv
inputs remains below the rising threshold voltage, VIT+.
Once the supplies monitored at the SENSEv inputs rise above
their associated thresholds, the reset signal remains low for
the reset timeout period before deasserting. Subsequently, if a
voltage monitored by the SENSEv pins falls below its associ-
ated falling threshold, VIT−, the RESET output asserts. The
ADM13305 features both an active high RESET and an active
low RESET output.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
Dual Processor
Supervisors with Watchdog
ADM13305
VDD
MR
SENSE1
SENSE2
GND
FUNCTIONAL BLOCK DIAGRAMS
ADM13305-18
ADM13305-25
ADM13305-33
14k
R1 R2
RESET
LOGIC + TIMER
RESET
R3 R4
RESET
1.25V
OSCILLATOR
WDI
TRANSITION
DETECTION
WATCHDOG
LOGIC + TIMER
Figure 1.
VDD
MR
SENSE1
GND
14k
R1 R2
SENSE2
ADM13305-4
ADM13305-5
RESET
LOGIC + TIMER
RESET
RESET
WDI
0.6V
OSCILLATOR
TRANSITION
DETECTION
WATCHDOG
LOGIC + TIMER
Figure 2. .
As well as providing power-on reset signals, an on-chip watchdog
timer can reset the microprocessor if it fails to strobe within the
preset timeout period. A reset signal can also be asserted by an
external push button through the manual reset input pin.
The ADM13305 is available in an 8-lead, narrow body SOIC
package. The device operates over the extended industrial
temperature range of −40°C to +85°C.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.
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ADM13305 pdf, ピン配列
ADM13305
SPECIFICATIONS
VDD = 2.7 V to 5.5 V, −40°C ≤ TA ≤ +85°C, unless otherwise noted.
Table 1. ADM13305-18, ADM13305-25, and ADM13305-33
Parameter
Min
OPERATING VOLTAGE RANGE, VDD
2.7
SUPPLY CURRENT, IDD
INPUT CAPACITANCE, CI
RESET, RESET OUTPUT
High Level Output Voltage, VOH
VDD − 0.2
VDD − 0.4
VDD − 0.4
Low Level Output Voltage, VOL
Typ
10
Power-Up Reset Voltage1
SENSE INPUTS
Falling Threshold Voltage, VIT−
Hysteresis at SENSEv Inputs, VHYS
1.64
2.20
2.86
4.46
1.64
2.20
2.86
4.46
WDI
Average High Level Input Current, IH(AV)
Average Low Level Input Current, IL(AV)
INPUT VOLTAGE AT MR AND WDI
High Level, VIH
Low Level, VIL
INPUT TRANSITION RISE AND FALL RATE AT MR
HIGH LEVEL INPUT CURRENT, IH
WDI
MR
SENSE1
SENSE2
LOW LEVEL INPUT CURRENT, IL
WDI
MR
SENSEv
0.7 × VDD
−1
1.68
2.25
2.93
4.55
1.68
2.25
2.93
4.55
15
20
30
40
100
−15
120
−130
5
6
−120
−430
1 The lowest supply voltage at which RESET becomes active. tr, VDD ≥ 15 μs/V.
Max
5.5
40
0.2
0.4
0.4
0.4
1.72
2.30
3.00
4.64
1.73
2.32
3.02
4.67
150
−20
0.3 × VDD
50
170
−180
8
9
−170
−600
+1
Unit Test Conditions/Comments
V
μA
pF VI = 0 V to VDD
V IOH = −20 μA
V IOH = −2 mA, VDD = 3.3 V
V IOH = −3 mA, VDD = 5.5 V
V IOL = 20 μA
V IOL = 2 mA, VDD = 3.3 V
V IOL = 3 mA, VDD = 5.5 V
V IOL = 20 μA, VDD ≥ 1.1 V
V TA = 0°C to 85°C
V TA = 0°C to 85°C
V TA = 0°C to 85°C
V TA = 0°C to 85°C
V TA = −40°C to +85°C
V TA = −40°C to +85°C
V TA = −40°C to +85°C
V TA = −40°C to +85°C
mV VIT− = 1.68 V
mV VIT− = 2.25 V
mV VIT− = 2.93 V
mV VIT− = 4.55 V
μA WDI = VDD = 5.5 V
μA WDI = 0 V, VDD = 5.5 V
V
V
ns/V
μA WDI = VDD = 5.5 V
μA MR = 0.7 × VDD, VDD = 5.5 V
μA SENSE1 = VDD = 5.5 V
μA SENSE2 = VDD = 5.5 V
μA WDI = 0 V, VDD = 5.5 V
μA MR = 0 V, VDD = 5.5 V
μA SENSE1, SENSE2 = 0 V
Rev. 0 | Page 3 of 12
Free Datasheet http://www.datasheet4u.com/


3Pages


ADM13305 電子部品, 半導体
ADM13305
ABSOLUTE MAXIMUM RATINGS
Table 8.
Parameter
Supply Voltage Range, VDD
MR , WDI
SENSE1, SENSE2
RESET, RESET
Maximum Low Output Current
Maximum High Output Current
Input Clamp Current (VI < 0 V, VI > VDD)
Output Clamp Current (VO < 0 V, VO > VDD)
Operating Temperature Range
Storage Temperature Range
Lead Temperature
Soldering (10 sec)
Vapor Phase (60 sec)
Infrared (15 sec)
Rating
−0.3 V to +6 V
−0.3 V to VDD + 0.3 V
(VDD + 0.3 V)VIT/VREF
−0.3 V to +6 V
5 mA
−5 mA
±20 mA
±20 mA
−40°C to +85°C
−65°C to +150°C
300°C
215°C
220°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
Table 9.
Package Type
8-Lead SOIC_N (R-8)
θJA Unit
206 °C/W
ESD CAUTION
Rev. 0 | Page 6 of 12
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共有リンク

Link :


部品番号部品説明メーカ
ADM13305

Dual Processor Supervisors

Analog Devices
Analog Devices
ADM13307

Triple Processor Supervisors

Analog Devices
Analog Devices


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