MAX9645EUK+ [MAXIM]
Comparator, 1 Func, 15000ns Response Time, BICMOS, PDSO5, SOT-23, 5 PIN;
| 型号： | MAX9645EUK+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Comparator, 1 Func, 15000ns Response Time, BICMOS, PDSO5, SOT-23, 5 PIN 比较器 |
| 文件： | 总11页 (文件大小：228K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-5803; Rev 0; 3/11
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
5/MAX946
General Description
Features
The MAX9644/MAX9645/MAX9646 are small, single com-
parators, ideal for a wide variety of portable electronics
applications such as cell phones, media players, and
notebooks that have extremely tight board space and
power constraints. These comparators are offered in both
a miniature 4-bump UCSP™ package with a 1mm x 1mm
footprint (as small as two 0402 resistors) and a
5-pin SOT23 package.
o Tiny, 1mm x 1mm x 0.6mm 4-Bump UCSP
Footprint = Two 0402 Resistors
Also Available in a 5-Pin SOT23 Package
o Ultra-Low Operating Current (100nA max)
o -0.3V to +5.5V Input Voltage Range
o Internal 0.2V Reference Trimmed to 1% Accuracy
o 15µs Propagation Delay
The ICs feature an input voltage range of -0.3V to
+5.5V, independent of supply voltage. These devices
maintain high impedance at the inputs even when pow-
o -40°C to +85°C Extended Temperature Range
ered down (V
or V
= 0V). They also feature inter-
REF
CC
nal filtering to provide high RF immunity.
The ICs have an internal 0.2V reference. These devices
feature either a push-pull or an open-drain output. They
consume only 700nA (max) supply current and operate
Ordering Information
PART
PIN-PACKAGE
4 UCSP
TOP MARK
+AGL
down to V = 1V over the extended -40°C to +85°C tem-
CC
perature range.
MAX9644EBS+G45
MAX9644EUK+
5 SOT23
4 UCSP
+AFJN
+AGM
Applications
MAX9645EBS+G45
MAX9645EUK+
Cell Phones
5 SOT23
4 UCSP
+AFJO
+AGN
Portable Media Players
Electronic Toys
MAX9646EBS+G45
MAX9646EUK+
5 SOT23
+AFJP
Notebook Computers
Portable Medical Devices
Note: All devices are specified over the extended -40°C to
+85°C operating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
G45 = Protective die coating.
Selector Guide
PART
REFERENCE VOLTAGE (V)
INPUT
OUTPUT
Open drain
Open drain
Push-pull
MAX9644
MAX9645
MAX9646
0.2
0.2
0.2
Noninverting
Inverting
Noninverting
UCSP is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
ABSOLUTE MAXIMUM RATINGS
CC
OUT to GND (MAX9644/MAX9645)..........................-0.3V to +6V
OUT to GND (MAX9646 only) .................-0.3V to + (V + 0.3V)
Output Short-Circuit Current Duration ....................................10s
Input Current into Any Terminal........................................ 20mA
Continuous Power Dissipation
V
, REF, IN to GND................................................-0.3V to +6V
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Bump Temperature (soldering) Reflow............................+235°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
CC
4-Bump UCSP (derate 3.0mW/°C above +70°C) .......238 mW
5-Pin SOT23 (derate 3.9mW/°C above +70°C)...........312 mW
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
= 3.3V, R
= 10kΩ to V
= 3.3V for MAX9644/MAX9645, T = -40°C to +85°C. Typical values at T = +25°C, unless
CC
PULLUP
PULLUP
A
A
otherwise noted.) (Note 1)
PARAMETER
DC CHARACTERISTICS
Input Voltage Range
Input Bias Current
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
Guaranteed by I test
-0.3
+5.5
15
V
IN
IN
I
V
V
= 0.2V to 5.5V (Note 2)
0.06
< 0.1
0.03
0.08
0.13
0.14
0.19
nA
nA
IN
IN
Input Leakage Current
I
= 0, V = 5.5V (Note 2)
15
IN_SHDN
CC
IN
I
I
I
I
I
I
I
I
I
I
= 50µA, V
= 1.0V
CC
0.2
SINK
= 200µA, V
= 500µA, V
= 1.2V
= 1.8V
0.20
0.23
0.3
SINK
CC
CC
Output Voltage Low
V
V
OL
SINK
= 0.75mA, V
= 3.3V
CC
SINK
= 1.2mA, V
= 5.5V
CC
0.5
SINK
5/MAX946
= 15µA, V
= 40µA, V
= 1.0V
V
V
V
V
V
- 0.08V
V
- 0.2V
SOURCE
SOURCE
SOURCE
SOURCE
SOURCE
CC
CC
CC
CC
CC
CC
CC
CC
= 1.2V
- 0.08V
- 0.15V
- 0.13V
- 0.24V
V
V
- 0.20V
- 0.23V
- 0.3V
CC
CC
Output Voltage High
(MAX9464 Only)
V
= 180µA, V
= 0.3mA, V
= 1.8V
= 3.3V
V
OH
CC
CC
V
CC
CC
= 0.75mA, V
= 5.5V
V
- 0.5V
CC
Output Leakage Current
(MAX9644/MAX9645 Only)
OUT = high, V
(Note 2)
= 5.5V
PULLUP
I
< 0.1
15
nA
OUT_LEAKAGE
AC CHARACTERISTICS
Propagation Delay
Fall Time
t
V
=
OVERDRIVE
100mV (Note 3)
15
14
30
µs
ns
ns
PD
t
C = 10pF
L
F
Rise Time
t
C = 10pF, MAX9646 only
L
R
REFERENCE VOLTAGE
MAX964_EBS+
MAX964_EUK+
200
199
Input Threshold (Note 4)
V
mV
%
REF
T
A
T
A
T
A
= +25°C
-1
+1
Input Threshold Error
(Note 4)
Delta-V
REF
= -40°C to +85°C
= -40°C to +85°C (Note 5)
-3.5
+3.5
Input Threshold Hysteresis
REF Tempco
V
0.9
6
mV
HYS
V
(Note 6)
µV/°C
REF_TEMPCO
Power-Supply Rejection
Ratio
PSRR
V
= 1.0V to 5.5V
40
53
dB
CC
2
_______________________________________________________________________________________
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
5/MAX946
ELECTRICAL CHARACTERISTICS
(V
= 3.3V, R
= 10kΩ to V
= 3.3V for MAX9644/MAX9645, T = -40°C to +85°C. Typical values at T = +25°C, unless
CC
PULLUP
PULLUP
A
A
otherwise noted.) (Note 1)
PARAMETER
POWER SUPPLY
Supply Voltage
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
Guaranteed by V /V
tests
1.0
5.5
0.7
1.1
V
CC
CC
ON
OL OH
V
V
= 1.0V
= 5.5V
0.4
0.6
3
CC
CC
Supply Current
Power-Up Time
I
µA
ms
t
Note 1: All devices are 100% production tested at T = +25°C. Temperature limits are guaranteed by design.
A
Note 2: Too small to be measured in an ATE test environment. Only gross test to catch failures is implemented.
Note 3: Overdrive is defined as the voltage above or below the switching points.
Note 4: Guaranteed by ATE and/or bench characterization over temperature. V
is the average of the trip points.
REF
Note 5: Hysteresis is half the input voltage difference between the two switching points.
Note 6: Includes reference error along with comparator offset voltage error.
Typical Operating Characteristics
(V = 3.3V, V
CC
= 1.8V, R
= 10kΩ to V
= 3.3V for MAX9644/MAX9645, GND = 0, T = +25°C, unless otherwise noted.)
REF
PULLUP
PULLUP A
SUPPLY CURRENT
vs. OUTPUT TRANSITION FREQUENCY
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
OUTPUT VOLTAGE LOW
vs. SINK CURRENT
100
10
1
1000
800
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
+85°C
V
= 5V
CC
+25°C
600
400
200
0
V
REF
= 5V
V
CC
= 3.3V
V
= 1.8V
CC
V
= 3.3V
REF
V
REF
= 1.8V
-40°C
0.1
1
10
100
0
1
2
3
4
5
6
0
2
4
6
8
OUTPUT TRANSITION FREQUENCY (kHz)
SUPPLY VOLTAGE (V)
SINK CURRENT (mA)
_______________________________________________________________________________________
3
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
Typical Operating Characteristics
(V = 3.3V, V
= 1.8V, R
= 10kΩ to V = 3.3V for MAX9644/MAX9645, GND = 0, T = +25°C, unless otherwise noted.)
PULLUP A
CC
REF
PULLUP
OUTPUT VOLTAGE HIGH
vs. SOURCE CURRENT (MAX9646)
INPUT BIAS CURRENT
vs. INPUT BIAS VOLTAGE
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
5
0
-5
V
= 5V
CC
-10
-15
V
= 3.3V
1.5
CC
V
= 1.8V
CC
V
= 3.3V
CC
-20
0
0.5
1.0
2.0
2.5
3.0
85
85
0
0.05 0.10 0.15 0.20 0.25 0.30
INPUT BIAS VOLTAGE (V)
SOURCE CURRENT (mA)
REFERENCE VOLTAGE
vs. TEMPERATURE
REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
202.0
201.9
201.8
201.7
201.6
201.5
201.4
201.3
201.2
201.1
201.0
201.0
200.8
200.6
200.4
200.2
200.0
199.8
199.6
199.4
199.2
199.0
V
= 3.3V
CC
5/MAX946
-40
-15
10
35
60
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
PROPAGATION DELAY
vs. TEMPERATURE
PROPAGATION DELAY
vs. INPUT OVERDRIVE
17
16
15
14
13
12
11
10
9
80
70
60
50
40
30
20
10
0
V
=
100mV
OD
V
= 5V
CC
V
= 1.8V
CC
V
= 3.3V
CC
V
= 5V
V
CC
= 3.3V
CC
V
= 1.8V
60
CC
-40
-15
10
35
0
50
100
150
200
250
TEMPERATURE (°C)
INPUT OVERDRIVE (mV)
4
_______________________________________________________________________________________
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
5/MAX946
Typical Operating Characteristics (continued)
(V = 3.3V, V
= 1.8V, R
= 10kΩ to V = 3.3V for MAX9644/MAX9645, GND = 0, T = +25°C, unless otherwise noted.)
PULLUP A
CC
REF
PULLUP
REFERENCE VOLTAGE
vs. TEMPERATURE
PROPAGATION DELAY AT V = 3.3V
CC
MAX9644 toc10
202.0
V
= 3.3V
CC
0.3V
201.9
201.8
201.7
201.6
201.5
201.4
201.3
201.2
201.1
201.0
IN+
100mV/div
0.1V
OUT
2V/div
0V
100µs/div
-40
-15
10
35
60
85
OUTPUT RESPONSE TO
SUPPLY VOLTAGE TRANSIENT
POWER-UP/POWER-DOWN RESPONSE
MAX9644 toc12
MAX9644 toc13
V
V
= 0.3V
IN
V
3.2V
CC
= 3.3V
CC
200mV/div
V
V
V
= V + 1mV
TH
IN
IN
IN
3V
OUT
2V/div
V
CC
2V/div
= V + 10mV
TH
0V
0V
0V
OUT
2V/div
OUT
2V/div
= V + 20mV
TH
0V
0V
OUT
2V/div
1ms/div
1ms/div
POWER-SUPPLY REJECTION
FOR NO FALSE TRIGGERING
206
204
202
200
198
196
194
UPPER TRIP POINT
LOWER TRIP POINT
V
= 3.3V + 100mV
P-P
CC
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
_______________________________________________________________________________________
5
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
Pin Configuration
TOP VIEW (BUMPS ON BOTTOM)
+
V
1
2
5
OUT
CC
OUT
A1
A2
B2
IN
MAX9644
MAX9645
MAX9646
MAX9644
MAX9645
MAX9646
GND
GND
V
CC
B1
GND
3
4
IN
UCSP
SOT23
Pin Description
PIN
NAME
OUT
IN
FUNCTION
UCSP
SOT23
Comparator Output. The MAX9644/MAX9645 have open-drain outputs. The MAX9646 has a
push-pull output.
A1
5
Comparator Input. The MAX9644/MAX9646 have noninverting inputs. The MAX9645 has
inverting inputs.
A2
4
B1
B2
1
V
Power-Supply Voltage. Bypass to ground with a 0.1µF bypass capacitor.
Ground
5/MAX946
CC
2, 3
GND
6
_______________________________________________________________________________________
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
5/MAX946
Output Stage Structure
Detailed Description
The MAX9644/MAX9645 have open-drain outputs that
The MAX9644/MAX9645/MAX9646 are extremely small
allow them to interface to logic circuitry running from
supply voltages other than the one supplied to the part.
These devices require an external pullup resistor or
current source for proper operation. Many microcon-
troller digital inputs ports can be readily programmed to
include these.
comparators ideal for compact, low-current, and low-
voltage applications.
The ICs consume only 400nA (typ). The low-voltage
operating capability of the operating current makes
these devices extremely attractive to long-life battery-
operated devices—these applications can now use a
single digital power-supply rail to power the new gener-
ation of microcontrollers (which can be down to 0.9V).
All parts are available in a tiny 4-bump UCSP, which is
only 0.6mm tall and occupies a 1mm x 1mm footprint
and a 5-pin SOT23.
The MAX9646 has a push-pull output stage that can
both sink and source current, eliminating the need for
an external pullup resistor. In this case, the MAX9646
uses the microcontroller’s power supply as V
.
CC
Applications Information
Input Stage Circuitry
Noninverting inputs are available on the MAX9644/
MAX9646 and inverting inputs are available on the
MAX9645.
Bypassing REF/V
CC
and
Place a 0.1µF capacitor between REF or V
CC
GND as close as possible to the device. During a
switching event, all comparators draw a current spike
from their power-supply rails. This current spike is
minimized by the use of an internal break-before-make
design.
The MAX9644/MAX9645/MAX9646 incorporate an inno-
vative input stage architecture that allows their input
voltage to exceed V
by several volts (limited only by
CC
the Absolute Maximum Ratings). This is unlike tradition-
al comparators that have an input ESD diode clamp
Hysteresis Operation
The ICs feature internal hysteresis for noise immunity
and glitch-free operation. If additional hysteresis is
needed, an external positive feedback network can be
easily implemented on the MAX9644 and MAX9646 non-
inverting input devices. Additional external hysteresis is
not possible on the MAX9645 because the noninverting
input of the comparator is not externally accessible.
between the input and V , limiting this maximum over-
CC
voltage to about 0.3V. The ICs architecture maintains a
high input impedance to input signals even when the
device power-supply voltage is completely turned off
(V
or REF taken to 0V). This greatly benefits flexible
CC
power-saving schemes to be easily implemented in
advanced battery-operated devices. On-chip filtering
provides immunity from any RF noise being picked up by
input traces. These devices feature an internal tempera-
ture-compensated, low-power 0.2V reference voltage.
Table 1. How Devices Behave Under Various Input Voltage Conditions
PART
INPUT VOLTAGE CONDITIONS
ACTION AT OUTPUT
External pullup resistor pulls output high.
V
V
V
V
V
V
> 0.2V
< 0.2V
> 0.2V
< 0.2V
> 0.2V
< 0.2V
IN
IN
IN
IN
IN
IN
MAX9644
Output asserts low.
Output asserts low.
MAX9645
MAX9646
External pullup resistor pulls output high.
Output asserts high.
Output asserts low.
_______________________________________________________________________________________
7
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
Typical Operating Circuits
V
= 1.0V TO 5.5V
V
V
= 1.0V TO 5.5V
V
DD
CC
DD
CC
INTERNAL
PULLUP
INTERNAL
PULLUP
MAX9644
MAX9645
0.2V REF
0.2V REF
OUT I/O
OUT I/O
IN
IN
MICROCONTROLLER
MICROCONTROLLER
V
= 1.0V TO 5.5V
CC
V
DD
MAX9646
0.2V REF
OUT I/O
IN
MICROCONTROLLER
5/MAX946
Chip Information
PROCESS: BiCMOS
8
_______________________________________________________________________________________
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
5/MAX946
Package Information
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing per-
tains to the package regardless of RoHS status.
PACKAGE TYPE
4 UCSP
PACKAGE CODE
B4+1
DOCUMENT NO.
21-0117
LAND PATTERN NO.
Refer to Application Note 1891
90-0174
5 SOT23
U5+2
21-0057
_______________________________________________________________________________________
9
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing per-
tains to the package regardless of RoHS status.
5/MAX946
10 ______________________________________________________________________________________
Low-Power Comparators with Precision
Reference in 4-Bump UCSP
5/MAX946
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
3/11
Initial release
—
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11
© 2011 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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