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ADM8614 の電気的特性と機能
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ADM8614のメーカーはAnalog Devicesです、この部品の機能は「Ultralow Power Supervisory IC」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 ADM8614 |
| 部品説明 Ultralow Power Supervisory IC |
| メーカ Analog Devices |
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Data Sheet
Ultralow Power Supervisory ICs with
Watchdog Timer and Manual Reset
ADM8611/ADM8612/ADM8613/ADM8614/ADM8615
FEATURES
Ultralow power consumption with ICC = 92 nA (typical)
Continuous monitoring with no blank time
Pretrimmed voltage monitoring threshold options
10 options from 2 V to 4.63 V for the ADM8611
20 options from 0.5 V to 1.9 V for the ADM8612/ADM8615
5 options from 2.32 V to 4.63 V for the ADM8613/ADM8614
±1.3% threshold accuracy over full temperature range
Manual reset input
(ADM8611/ADM8612/ADM8613/ADM8615)
200 ms (typical) reset timeout
Low voltage input monitoring down to 0.5 V (ADM8612/
ADM8615)
Watchdog timer (ADM8613/ADM8614/ADM8615)
Watchdog function disable input (ADM8613/ADM8614 only)
Watchdog timeout extension input (ADM8614 only)
Active low, open-drain RESET output
Power supply glitch immunity
Available in a 1.46 mm × 0.96 mm WLCSP
Operational temperature range: −40°C to +85°C
APPLICATIONS
Portable/battery-operated equipment
Microprocessor systems
Energy metering
Energy harvesting
GENERAL DESCRIPTION
The ADM8611/ADM8612/ADM8613/ADM8614/ADM8615
are voltage supervisory circuits that monitor power supply voltage
levels and code execution integrity in microprocessor-based
systems. Apart from providing power-on reset signals, an on-
chip watchdog timer can reset the microprocessor if it fails to
strobe within a preset timeout period. A reset signal can also be
asserted by an external push-button through a manual reset input.
The ultralow power consumption of these devices makes them
suitable for power efficiency sensitive systems, such as battery-
powered portable devices and energy meters.
The features of each member of the device family are shown in
Table 9. Each device subdivides into submodels with differences
in factory preset voltage monitoring threshold options. In the
range of 2 V to 4.63 V, 10 options are available for the ADM8611.
In the range of 2.32 V to 4.63 V, five options are available for
FUNCTIONAL BLOCK DIAGRAMS
VCC
VIN
VTH
ADM8612
RESET
GENERATOR
RESET
MR DEBOUNCE
GND
Figure 1. ADM8612 Functional Block Diagram
VCC
ADM8614
RESET
RESET
VTH GENERATOR
WDI
WATCHDOG
DETECTOR
GND
WD_DIS WDT_SEL
Figure 2. ADM8614 Functional Block Diagram
both the ADM8613 and ADM8614. A separate supply input
allows the ADM8612 and ADM8615 to monitor 20 different
low voltage levels from 0.5 V to 1.9 V.
The ADM8611, ADM8612, ADM8613, and ADM8615 can
reset on demand through the manual reset input. The watchdog
function on the ADM8613, ADM8614, and ADM8615 monitors
the heartbeat of the microprocessor through the WDI pin. The
ADM8613 and ADM8614 have a watchdog disable input, which
allows the user to disable the watchdog function, if required. The
ADM8614 also has a watchdog timeout extension input, allowing
the watchdog timeout to be extended from 1.6 sec to 100 sec.
The ADM8611/ADM8612/ADM8613/ADM8614/ADM8615
are available in a 6-ball, 1.46 mm × 0.96 mm WLCSP. These
devices are specified over the temperature range of −40°C to +85°C.
Rev. D
Document Feedback
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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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2015–2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 Page
Data Sheet
ADM8611/ADM8612/ADM8613/ADM8614/ADM8615
SPECIFICATIONS
VCC = 2 V to 5.5 V, VIN < VCC + 0.3 V, TA = −40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C.
Table 1.
Parameter
OPERATING VOLTAGE RANGE
ADM8611, ADM8613, ADM8614
ADM8612, ADM8615
UNDERVOLTAGE LOCKOUT (ADM8612,
ADM8615)
Input Voltage Rising
Input Voltage Falling
Hysteresis
INPUT CURRENT
VCC Quiescent Current
Symbol
VCC
Min
0.9
2
0.9
UVLORISE
UVLOFALL
UVLOHYS
1.6
ICC
Typ
90
92
VIN Average Input Current
RESET THRESHOLD VOLTAGE
ADM8611, ADM8613, ADM8614
ADM8612, ADM8615
VTH
RESET THRESHOLD HYSTERESIS
ADM8611, ADM8613, ADM8614
ADM8612, ADM8615
RESET TIMEOUT PERIOD
PROPAGATION DELAY
VCC to RESET
ADM8611, ADM8613, ADM8614
VIN to RESET
ADM8612, ADM8615
INPUT GLITCH REJECTION
VCC Glitch Rejection
ADM8611, ADM8613, ADM8614
VIN Glitch Rejection
ADM8612, ADM8615
VHYST
tRP
tPD_VCC
tPD_VIN
tGR_VCC
tGR_VIN
4
4
VTH − 1.3%
VTH − 1.3%
VTH − 1.4%
VTH − 1.6%
VTH − 1.6%
VTH − 1.7%
VTH − 1.8%
VTH − 1.8%
VTH − 1.9%
VTH − 1.9%
VTH − 2.0%
VTH − 2.1%
VTH − 2.1%
VTH − 2.2%
VTH
VTH
1.1
1
0.95
0.9
0.85
0.8
0.75
0.7
0.65
0.6
0.55
0.5
0.9% × VTH
0.9% × VTH
10.3
170 200
18 26
13.5 23
13.5 23
13.5 21
Max Unit
5.5 V
5.5 V
V
1.95 V
V
mV
190 nA
110 nA
8.5 nA
32 nA
VTH + 1.3%
VTH + 1.3%
VTH + 1.4%
VTH + 1.6%
VTH + 1.6%
VTH + 1.7%
VTH + 1.8%
VTH + 1.8%
VTH + 1.9%
VTH + 1.9%
VTH + 2.0%
VTH + 2.1%
VTH + 2.1%
VTH + 2.2%
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
mV
240 ms
37 µs
35 µs
32 µs
27 µs
Test Conditions/Comments
Guarantees valid RESET output
Guarantees valid RESET output
Guarantees RESET output low
VCC = 2 V to 5.5 V, RESET deasserts,
VWDI = VCC
VCC = 2 V to 5.5 V, RESET deasserts,
VWDI = VCC, TA = 25°C
VIN = 2 V, VCC = 5.5 V
VIN = 2 V, VCC = 2 V
Input falling
See Table 10 and Table 12
VTH ≥ 1.2 V, see Table 11
1.1 V threshold option
1 V threshold option
0.95 V threshold option
0.9 V threshold option
0.85 V threshold option
0.8 V threshold option
0.75 V threshold option
0.7 V threshold option
0.65 V threshold option
0.6 V threshold option
0.55 V threshold option
0.5 V threshold option
VTH > 1 V
VTH ≤ 1 V
VCC falling with VTH × 10% overdrive
VIN falling with VTH × 10% overdrive
VCC falling, with VTH × 10% overdrive
VIN falling with VTH × 10% overdrive
Rev. D | Page 3 of 17
3Pages
ADM8611/ADM8612/ADM8613/ADM8614/ADM8615
Data Sheet
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
BALL A1
INDICATOR
12
VCC
A
DNC
B
GND
GND
MR RESET
C
TOP VIEW
(BALL SIDE DOWN)
Not to Scale
DNC = DO NOT CONNECT.
DO NOT CONNECT TO THIS PIN.
Figure 3. ADM8611 Pin Configuration
Table 4. ADM8611 Pin Function Descriptions
Pin No. Mnemonic Description
A1 VCC
Power Supply Input. The voltage on the VCC pin is monitored on the ADM8611. It is recommended to place a
0.1 μF decoupling capacitor as close as possible to the device between the VCC pin and the GND pin.
A2 GND
Ground. Both GND pins on the ADM8611 must be grounded.
B1 DNC
Do Not Connect. Do not connect to this pin.
B2 GND Ground. Both GND pins on the ADM8611 must be grounded.
C1 MR
Manual Reset Input, Active Low.
C2
RESET
Active Low, Open-Drain RESET Output.
BALL A1
INDICATOR
12
VCC
A
GND
MR
B
GND
VIN RESET
C
TOP VIEW
(BALL SIDE DOWN)
Not to Scale
Figure 4. ADM8612 Pin Configuration
Table 5. ADM8612 Pin Function Descriptions
Pin No. Mnemonic Description
A1 VCC
Power Supply Input. The voltage on the VCC pin is not monitored on the ADM8612. It is recommended to place a
0.1 μF decoupling capacitor as close as possible to the device between the VCC pin and the GND pin.
A2 GND Ground. Both GND pins on the ADM8612 must be grounded.
B1 MR
Manual Reset Input, Active Low.
B2 GND Ground. Both GND pins on the ADM8612 must be grounded.
C1 VIN
Low Voltage Monitoring Input. This separate supply input allows the ADM8612 to monitor low voltages on the
VIN pin to 0.5 V.
C2
RESET
Active Low, Open-Drain RESET Output.
Rev. D | Page 6 of 17
6 Page
合計 : 17 ページ |
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| 部品番号 | 部品説明 | メーカ |
| ADM8611 | Ultralow Power Supervisory IC | Analog Devices |
| ADM8612 | Ultralow Power Supervisory IC | Analog Devices |
| ADM8613 | Ultralow Power Supervisory IC | Analog Devices |
| ADM8614 | Ultralow Power Supervisory IC | Analog Devices |