Operating Temperature Range ........................... -40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (SOT23 only, soldering 10s) ............. +300°C
Soldering Temperature (reflow) ....................................... +260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(V
CC
= 3.3V, T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
DC CHARACTERISTICS
MAX9065EBS+
4 UCSP
Upper Threshold Voltage
UTV
MAX9065EUK+
5 SOT23
MAX9065AEBS+
4 UCSP
MAX9065EBS+
4 UCSP
Lower Threshold Voltage
LTV
MAX9065EUK+
5 SOT23
MAX9065AEBS+
4 UCSP
Input Voltage Range
Hysteresis
Resistor String Input Resistance
Input Shutdown Current
Output Voltage Low
V
IN
V
HYS
R
IN
I
IN_SHDN
V
OL
V
CC
= 0V, V
IN
= 5.5V
I
SINK
= 100µA, V
CC
= 1V, T
A
= +25°C
I
SINK
= 1.2mA, V
CC
= 3.3V
I
SINK
= 1.2mA, V
CC
= 5.5V
I
SOURCE
= 25µA, V
CC
= 1V, T
A
= +25°C
Output Voltage High
AC CHARACTERISTICS
Propagation Delay
Fall Time
Rise Time
t
PD
t
F
t
R
Overdrive = ±100mV (Notes 3, 4)
C
L
= 10pF
C
L
= 10pF
25
14
30
µs
ns
ns
V
OH
I
SOURCE
= 0.3mA, V
CC
= 3.3V
I
SOURCE
= 0.75mA, V
CC
= 5.5V
(Note 2)
5.8
T
A
= +25°C
-40°C < T
A
< +85°C
T
A
= +25°C
-40°C < T
A
< +85°C
T
A
= +25°C
-40°C < T
A
< +85°C
T
A
= +25°C
-40°C < T
A
< +85°C
T
A
= +25°C
-40°C < T
A
< +85°C
T
A
= +25°C
-40°C < T
A
< +85°C
4.158
4.10
4.04
3.98
1.152
1.132
2.94
2.92
2.88
2.83
0.576
0.566
-0.3
±1.0
11
1
17.7
15
0.2
0.3
0.5
V
CC
- 0.2
V
CC
- 0.3
V
CC
- 0.5
V
V
0.60
3.00
3.00
1.20
4.20
4.20
4.242
4.30
4.36
4.42
1.248
1.268
3.06
3.08
3.12
3.17
0.624
0.634
+5.5
V
%
MΩ
nA
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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Maxim Integrated
│
2
MAX9065
Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
Electrical Characteristics (continued)
(V
CC
= 3.3V, T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
POWER SUPPLY
Supply Voltage
Supply Current
Power-Supply Rejection Ratio
Power-Up Time
Note
Note
Note
Note
1:
2:
3:
4:
V
CC
I
CC
PSRR
t
ON
Guaranteed by V
OS
tests
V
CC
= 5.5V
V
CC
= 1.0V, T
A
= +25°C
V
CC
= 0.9V to 5.5V, T
A
= +25°C
40
1
0.7
0.6
53
3
5.5
1.35
1.0
V
µA
dB
ms
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
All devices are 100% production tested at T
A
= +25°C. Temperature limits are guaranteed by design.
Hysteresis is the input voltage difference between the two switching points.
Overdrive is defined as the voltage above or below the average of the switching points.
Guaranteed by ATE and/or bench characterization over temperature.
Typical Operating Characteristics
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9065 toc01
(V
CC
= 3.3V, T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. OUTPUT TRANSITION FREQUENCY
MAX9065 toc02
800
600
400
200
0
T
A
= -40°C
T
A
= +25°C
35
30
25
20
15
10
5
0
V
CC
= 1.8V
OUTPUT VOLTAGE LOW (V)
1000
SUPPLY CURRENT (nA)
T
A
= +85°C
45
SUPPLY CURRENT (µA)
40
V
CC
= 5V
2.5
2.0
1.5
1.0
0.5
0
V
CC
= 5V
V
CC
= 3.3V
V
CC
= 1.8V
V
CC
= 3.3V
0
1
2
3
4
5
6
0.1
1
10
100
0
4
8
12
16
20
SUPPLY VOLTAGE (V)
OUTPUT TRANSITION FREQUENCY (kHz)
SINK CURRENT (mA)
OUTPUT VOLTAGE HIGH
vs. SOURCE CURRENT
MAX9065 toc04
MAX9065 toc05
90
80
HYSTERESIS (mV)
70
60
50
40
30
20
10
0
V
TH
= 3V
V
TH
= 4.2V
OUTPUT VOLTAGE HIGH (V)
THRESHOLD VOLTAGE (V)
2.5
2.0
1.5
1.0
0.5
0
V
CC
= 1.8V
0
2
4
6
V
CC
= 3.3V
V
CC
= 5V
4.2
4.0
3.8
3.6
3.4
3.2
3.0
V
TH
= 4.2V
V
TH
= 3V
8
-40
-15
10
35
60
85
2.8
-40
-15
10
35
60
85
SOURCE CURRENT (mA)
TEMPERATURE (°C)
TEMPERATURE (°C)
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Maxim Integrated
│
3
MAX9065 toc06
3.0
100
HYSTERESIS VOLTAGE
vs. TEMPERATURE
4.4
THRESHOLD VOLTAGE
vs. TEMPERATURE
MAX9065 toc03
1200
50
OUTPUT VOLTAGE LOW
vs. SINK CURRENT
3.0
MAX9065
Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
Typical Operating Characteristics (continued)
(V
CC
= 3.3V, T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C, unless otherwise noted.)
THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
MAX9065 toc07
MAX9065 toc08
4.2
THRESHOLD VOLTAGE (V)
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
PROPAGATION DELAY (µs)
19
17
15
13
11
9
V
CC
= 5V
V
CC
= 3.3V
PROPAGATION DELAY (µs)
V
TH
= 4.2V
23
21
V
TH
= 4.2V
200
150
100
50
0
V
CC
= 1.8V
V
CC
= 3.3V
V
CC
= 5V
V
TH
= 3V
V
CC
= 1.8V
-40
-15
10
35
60
85
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
7
0
20 40 60 80 100 120 140 160 180 200
INPUT OVERDRIVE (mV)
TEMPERATURE (°C)
PROPAGATION DELAY
vs. SUPPLY VOLTAGE
MAX9065 toc10
1kHz FREQUENCY RESPONSE
4.4V
25
20
15
10
5
V
OD
= ±200mV
0
0
1
2
3
4
5
V
TH
= 4.2V
MAX9065 toc11
10kHz FREQUENCY RESPONSE
4.4V
MAX9065 toc12
V
CC
= 3.3V
IN
200mV/div
V
CC
= 3.3V
IN
200mV/div
PROPAGATION DELAY (ms)
V
TH
= 3V
4V
4V
0V
OUT
2V/div
0V
6
200µs/div
20µs/div
SUPPLY VOLTAGE (V)
OUTPUT RESPONSE TO SUPPLY
VOLTAGE TRANSIENT
3.2V
3V
V
IN
= V
TH
+ 50mV
MAX9065 toc13
POWER-UP/POWER-DOWN RESPONSE
V
CC
200mV/div
OUT
2V/div
OUT
2V/div
OUT
2V/div
0V
V
IN
= 4.3V
V
CC
= 3.3V
1ms/div
0V
MAX9065 toc14
POWER-SUPPLY REJECTION
FOR NO FALSE TRIGGERING
4.34
4.32
4.30
4.28
4.26
4.24
4.22
4.20
4.18
4.16
4.14
4.12
4.10
4.08
4.06
MAX9065 toc15
0V
V
IN
= V
TH
+ 150mV
0V
V
IN
= V
TH
+ 300mV
OUT
2V/div
TRIP POINT (V)
V
CC
2V/div
UPPER TRIP
POINT
LOWER TRIP
POINT
0V
V
CC
= 3.3V + 100mV
P-P
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
1ms/div
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Maxim Integrated
│
4
MAX9065 toc09
4.4
PROPAGATION DELAY
vs. TEMPERATURE
25
250
PROPAGATION DELAY
vs. INPUT OVERDRIVE
OUT
2V/div
MAX9065
Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
Table 1. MAX9065 Operation
FUNCTION
External Supply Input.
Bypass to ground with a
0.1µF bypass capacitor.
Ground
Window Comparator Input
Push-Pull Output
INPUT VOLTAGE
V
IN
> 4.2V
3.0V < V
IN
< 4.2V
V
IN
< 3.0V
OUTPUT
Low
High
Low
Pin Description
PIN
SOT23
1
2, 3
4
5
UCSP
B1
B2
A2
A1
NAME
V
CC
GND
IN
OUT
Table 2. MAX9065A Operation
INPUT VOLTAGE
V
IN
> 1.2V
0.6V < V
IN
< 1.2V
V
IN
< 0.6V
OUTPUT
Low
High
Low
Detailed Description
The MAX9065 is an extremely small window comparator
designed for compact, low-current applications, featuring
a supply current of less than 1μA (max).
MAX9065 Operation
At the heart of the MAX9065 are two comparators, a
resistor-divider with a disconnect switch, a 200mV refer-
ence, digital logic circuitry, and an output stage (see the
Typical Operating Circuit).
The digital logic circuitry and the output stage together
behave like an AND gate. The gate’s inputs are the out-
puts of the two comparators. When either comparator’s
output is low, the output asserts low. When both compara-
tor’s outputs are high, the output asserts high.
When power is applied to V
CC
, the n-channel FET at the
bottom of the resistor-divider is turned on. The resistor-
divider provides two voltages, V
UPPER
and V
LOWER
,
for comparison with an internal 0.2V reference voltage.
When the input voltage exceeds 4.2V, V
UPPER
is greater
than 0.2V, causing the output to assert low. When the
input voltage falls below 3.0V, V
LOWER
is less than 0.2V,
causing the output also to assert low. With the input volt-
age between 3.0V and 4.2V, the output asserts high, indi-
cating that the input voltage is within the desired range.
Table 1
summarizes the operation of the MAX9065.
When V
CC
goes to 0V, the n-channel FET is turned off,
eliminating the resistor-divider as a leakage path for current.
The resistor-divider provides two voltages, V
UPPER
and
V
LOWER
, for comparison with an internal 0.2V reference
voltage. When the input voltage exceeds 1.2V, V
UPPER
is
greater than 0.2V, causing the output to assert low.
When the input voltage falls below 0.6V, V
LOWER
is less
than 0.2V, causing the output also to assert low. With the
input voltage between 0.6V and 1.2V, the output asserts
high, indicating that the input voltage is within the desired
range.
Table 2
summarizes the operation of the MAX9065A.
MAX9065A Operation
Applications
The MAX9065 is designed specifically to monitor the
voltage on a single lithium battery. Keeping the voltage
on a lithium battery within a tight range is important to
prevent damage to the battery. Specifically, ensuring that
the battery’s voltage neither exceeds 4.2V nor falls below
3.0V lengthens the lifetime of the battery and avoids any
1. Introduction
Electronic scales are gradually replacing traditional measuring tools like springs and balances in everyday life, such as electronic price computing scales and electronic weigh...[详细]
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