Maxim MAX953MJA, MAX954C-D, MAX954EPA, MAX954ESA, MAX954EUA Datasheet
...
_______________General Description
The MAX951–MAX954 feature combinations of a
micropower operational amplifier, comparator, and reference in an 8-pin package. In the MAX951 and
MAX952, the comparator’s inverting input is connected
to an internal 1.2V ±2% bandgap reference. The
MAX953 and MAX954 are offered without an internal
reference. The MAX951/MAX952 operate from a single
+2.7V to +7V supply with a typical supply current of
7µA, while the MAX953/MAX954 operate from +2.4V to
+7V with a 5µA typical supply current. Both the op amp
and comparator feature a common-mode input voltage
range that extends from the negative supply rail to within 1.6V of the positive rail, as well as output stages that
swing rail to rail.
The op amps in the MAX951/MAX953 are internally
compensated to be unity-gain stable, while the op
amps in the MAX952/MAX954 feature 125kHz typical
bandwidth, 66V/ms slew rate, and stability for gains of
10V/V or greater. These op amps have a unique output
stage that enables them to operate with an ultra-low
supply current while maintaining linearity under loaded
conditions. In addition, they have been designed to
exhibit good DC characteristics over their entire operating temperature range, minimizing input referred errors.
The comparator output stage of these devices continuously sources as much as 40mA. The comparators
eliminate power-supply glitches that commonly occur
when changing logic states, minimizing parasitic feedback and making the devices easier to use. In addition,
they contain ±3mV internal hysteresis to ensure clean
output switching, even with slow-moving input signals.
____________________________Features
♦ Op Amp + Comparator + Reference in an 8-Pin
µMAX Package (MAX951/MAX952)
♦ 7µA Typical Supply Current
(Op Amp + Comparator + Reference)
♦ Comparator and Op-Amp Input Range Includes
Ground
♦ Outputs Swing Rail to Rail
♦ +2.4V to +7V Supply Voltage Range
♦ Unity-Gain Stable and 125kHz Decompensated
A
V
≥ 10V/V Op-Amp Options
♦ Internal 1.2V ±2% Bandgap Reference
♦ Internal Comparator Hysteresis
♦ Op Amp Capable of Driving up to 1000pF Load
________________________Applications
Instruments, Terminals, and Bar-Code Readers
Battery-Powered Systems
Automotive Keyless Entry
Low-Frequency, Local-Area Alarms/Detectors
Photodiode Preamps
Smart Cards
Infrared Receivers for Remote Controls
Smoke Detectors and Safety Sensors
MAX951–MAX954
Ultra-Low-Power, Single-Supply
Op Amp + Comparator + Reference
________________________________________________________________
Maxim Integrated Products
1
TOP VIEW
( ) ARE FOR MAX953/MAX954
1
2
3
4
8
7
6
5
V
DD
COMPOUT
REF (COMPIN-)
COMPIN+
V
SS
AMPIN+
AMPIN-
AMPOUT
MAX951
MAX952
MAX953
MAX954
DIP/SO/µMAX
__________________Pin Configuration
19-0431; Rev 1; 7/97
Typical Operating Circuit and Ordering Information
appear at end of data sheet.
PART
INTERNAL
2%
PRECISION
REFERENCE
OP-AMP
GAIN
STABILITY
(V/V)
COMPARATOR
SUPPLY
CURRENT
(µA)
MAX951
Yes 1 Yes 7
MAX952
Yes 10 Yes 7
MAX953
No 1 Yes 5
MAX954
No 10 Yes 5
____________________Selection Table
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
TA= -10°C to +85°C
MAX951–MAX954
Ultra-Low-Power, Single-Supply
Op Amp + Comparator + Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD= 2.8V to 7V for MAX951/MAX952, VDD= 2.4V to 7V for MAX953/MAX954, VSS= 0V, V
CM COMP
= 0V for the MAX953/MAX954,
V
CM OPAMP
= 0V, AMPOUT = (VDD+ VSS) / 2, COMPOUT = low, TA= T
MIN
to T
MAX
, typical values are at TA= +25°C, unless
otherwise noted.)
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.
Supply Voltage (VDDto VSS)....................................................9V
Inputs
Current (AMPIN_, COMPIN_)..........................................20mA
Voltage (AMPIN_, COMPIN_).......(V
DD
+ 0.3V) to (VSS- 0.3V)
Outputs
Current (AMPOUT, COMPOUT)......................................50mA
Current (REF)..................................................................20mA
Voltage (AMPOUT,
COMPOUT, REF)..............(V
DD
+ 0.3V) to (VSS- 0.3V)
Short-Circuit Duration (REF, AMPOUT)..................Continuous
Short-Circuit Duration (COMPOUT, V
DD
to VSS≤ 7V)......1min
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C).........................471mW
µMAX (derate 4.10mW/°C above +70°C) ....................330mW
CERDIP (derate 8.00mW/°C above +70°C).................640mW
Operating Temperature Ranges
MAX95_E_A.....................................................-40°C to +85°C
MAX95_MJA ..................................................-55°C to +125°C
Maximum Junction Temperatures
MAX95_E_A .................................................................+150°C
MAX95_MJA.................................................................+175°C
Storage Temperature Range.............................-65°C to +165°C
Lead Temperature (soldering, 10sec).............................+300°C
V
SS
to (VDD- 1.6V), MAX953/MAX954
MAX95_M
TA= +25°C, MAX951/MAX952
MAX95_E
TA= +25°C
MAX95_MJA
MAX95_EPA/ESA
MAX95_EUA (µMAX)
TA= +25°C
MAX953M/MAX954M
MAX95_MJA
MAX95_EUA (µMAX)
MAX953E/MAX954E
MAX951E/MAX952E
MAX951M/MAX952M
MAX95_EPA/ESA
TA= +25°C, MAX953/MAX954
TA= +25°C
CONDITIONS
mV/V0.1 1CMRRCommon-Mode Rejection Ratio
VV
SS
VDD-1.6VCMVRCommon-Mode Range
nA
40
Input Leakage Current
(Note 4)
0.003 5
0.003 0.050
mV
7
Trip Point
(Note 3)
5
17
4
mV
6
V
OS
Input Offset Voltage
(Note 2)
14
4
1 3
7 10
11
9
11
13
5 8
UNITSMIN TYP MAXSYMBOLPARAMETER
I
S
Supply Current
(Note 1)
µA
MAX951/MAX952
MAX953/MAX954 2.4 7.0
V2.7 7.0V
DD
2.8 7.0
Supply Voltage Range
COMPARATOR
TA= -10°C to +85°C
TA= T
MIN
to T
MAX
MAX951–MAX954
Ultra-Low-Power, Single-Supply
Op Amp + Comparator + Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 2.8V to 7V for MAX951/MAX952, VDD= 2.4V to 7V for MAX953/MAX954, VSS= 0V, V
CM COMP
= 0V for the MAX953/MAX954,
V
CM OPAMP
= 0V, AMPOUT = (VDD+ VSS) / 2, COMPOUT = low, TA= T
MIN
to T
MAX
, typical values are at TA= +25°C, unless
otherwise noted.)
MAX95_M
MAX95_E
TA= +25°C
MAX953/MAX954, VDD= 2.4V to 7V
MAX95_MJA
MAX951/MAX952, VDD= 2.8V to 7V
MAX95_EUA (µMAX)
MAX95_EPA/ESA
TA= +25°C
I
OUT
= ±20µA, TA= +25°C
MAX95_MJA
0.1Hz to 10Hz
MAX95_EUA (µMAX)
MAX95_EPA/ESA
CL= 100pF, TA=
+25°C, VDD- VSS= 5V
I
SOURCE
= 2mA
I
SINK
= 1.8mA
I
OUT
= ±3µA, MAX95_M
I
OUT
= ±6µA, MAX95_E
CONDITIONS
100 1000
nA
0.003 40
I
B
Input Bias Current 0.003 5
0.003 0.050
mV
5
V
OS
Input Offset Voltage
5
4
1 3
µVp-p16e
n
Voltage Noise
%
1.5
Load Regulation 1.5
22
mV/V
0.05 1
PSRR
0.05 1
Power-Supply Rejection Ratio
0.1
V
1.164 1.200 1.236
V
REF
Reference Voltage
(Note 5)
1.130 1.200 1.270
1.176 1.200 1.224
µs
4
T
pd
Response Time
VVDD- 0.4VV
OH
Output High Voltage
VVSS+ 0.4VV
OL
Output Low Voltage
UNITSMIN TYP MAXSYMBOLPARAMETER
50
10
40 150
25
5
AV= +1V/V, MAX951/MAX953, VDD- VSS= 5V 20
Gain Bandwidth GBW
AV= +10V/V, MAX952/MAX954, VDD- VSS= 5V 125
kHz
AV= +1V/V, MAX951/MAX953, VDD- VSS= 5V 12.5
Slew Rate SR
AV= +10V/V, MAX952/MAX954, VDD- VSS= 5V 66
V/ms
0.07 1.0
Power-Supply Rejection Ratio PSRR
VDD= 2.4V to 7V, MAX953/MAX954 0.07 1.0
mV/V
en
fo= 1kHz 80 nV√Hz
VOD= 10mV
VOD= 100mV
TA= +25°C
MAX95_E
MAX95_M
TA= +25°C
MAX95_E
MAX95_M
VDD= 2.8V to 7V, MAX951/MAX952
Input Noise Voltage
fo= 0.1Hz to 10Hz 1.2 µVp-p
AMPOUT = 0.5V to
4.5V, VDD- VSS= 5V
A
VOL
Large-Signal Gain
(no load)
V/mV
AMPOUT = 0.5V to
4.5V, VDD- VSS= 5V
A
VOL
Large-Signal Gain
(100kΩ load to VSS)
V/mV
Common-Mode Input Range CMVR V
SS
VDD- 1.6 V
Common-Mode Rejection Ratio CMRR V
CM OPAMP
= VSSto (VDD- 1.6V) 0.03 1 mV/V
REFERENCE
OP AMP
µA
MAX951–MAX954
Ultra-Low-Power, Single-Supply
Op Amp + Comparator + Reference
4 _______________________________________________________________________________________
RL= 100kΩ to V
SS
RL= 100kΩ to V
SS
TA= +25°C, VDD- VSS= 5V
TA= +25°C
MAX95_M
TA= +25°C
TA= +25°C, VDD- VSS= 5V
MAX95_M
MAX95_E
MAX95_E
CONDITIONS
30
50
VVSS+ 50mVV
OL
Output Low Voltage
VVDD- 500mVV
OH
Output High Voltage
200 570
70
40
70
300 820
60
UNITSMIN TYP MAXSYMBOLPARAMETER
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 2.8V to 7V for MAX951/MAX952, VDD= 2.4V to 7V for MAX953/MAX954, VSS= 0V, V
CM COMP
= 0V for the MAX953/MAX954,
V
CM OPAMP
= 0V, AMPOUT = (VDD+ VSS) / 2, COMPOUT = low, TA= T
MIN
to T
MAX
, typical values are at TA= +25°C, unless
otherwise noted.)
Note 1: Supply current is tested with COMPIN+ = (REF - 100mV) for MAX951/MAX952, and COMPIN+ = 0V for MAX953/MAX954.
Note 2: Input Offset Voltage is defined as the center of the input-referred hysteresis. V
CM COMP
= REF for MAX951/MAX952, and
V
CM COMP
= 0V for MAX953/MAX954.
Note 3: Trip Point is defined as the differential input voltage required to make the comparator output change. The difference
between upper and lower trip points is equal to the width of the input-referred hysteresis. V
CM COMP
= REF for
MAX951/MAX952, and V
CM COMP
= 0V for MAX953/MAX954.
Note 4: For MAX951/MAX952, input leakage current is measured for COMPIN- at the reference voltage. For MAX953/MAX954, input
leakage current is measured for both COMPIN+ and COMPIN- at V
SS
.
Note 5: Reference voltage is measured with respect to VSS. Contact factory for availability of a 3% accurate reference voltage in the
µMAX package.
I
SRC
Output Source Current µA
I
SNK
Output Sink Current µA
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