19-2021; Rev 4; 7/11
Single/Dual/Quad, +1.8V/750nA, SC70,
Rail-to-Rail Op Amps
General Description
The MAX4464/MAX4470/MAX4471/MAX4472/MAX4474
family of micropower op amps operate from a single
+1.8V to +5.5V supply and draw only 750nA of supply
current. The MAX4470 family feature ground-sensing
inputs and rail-to-rail output. The ultra-low supply cur-
rent, low-operating voltage, and rail-to-rail output capa-
bilities make these operational amplifiers ideal for use
in single lithium ion (Li+), or two-cell NiCd or alkaline
battery systems.
The rail-to-rail output stage of the MAX4464/MAX4470/
MAX4471/MAX4472/MAX4474 amplifiers is capable of
driving the output voltage to within 4mV of the rail with a
100kΩ load, and can sink and source 11mA with a +5V
supply. These amplifiers are available in both fully com-
pensated and decompensated versions. The single
MAX4470, dual MAX4471, and the quad MAX4472 are
unity-gain stable. The single MAX4464 and the dual
MAX4474 are stable for closed-loop gain configurations
of
≥
+5V/V. These amplifiers are available in space-sav-
ing WLP, SC70, SOT23, µMAX
®
, and TSSOP packages.
o
o
o
o
o
o
o
Features
Ultra-Low 750nA Supply Current Per Amplifier
Ultra-Low +1.8V Supply Voltage Operation
Ground-Sensing Input Common-Mode Range
Outputs Swing Rail-to-Rail
Outputs Source and Sink 11mA of Load Current
No Phase Reversal for Overdriven Inputs
High 120dB Open-Loop Voltage Gain
MAX4464/MAX4470/MAX4471/MAX4472/MAX4474
o
Low 500µV Input Offset Voltage
o
9kHz Gain-Bandwidth Product
(MAX4470/MAX4471/MAX4472)
o
40kHz Gain-Bandwidth Product
(MAX4464/MAX4474)
o
250pF (min) Capacitive Load Capability
o
Available in Tiny, 6-Bump WLP, 5-Pin SC70, and
8-Pin SOT23 Packages
Ordering Information
PART
MAX4464EXK+T
MAX4464EUK+T
MAX4470EXK+T
MAX4470EUK+T
MAX4470EWT+
MAX4471EKA+T
MAX4471ESA+
MAX4472EUD+
MAX4472ESD+
MAX4474EKA+T
MAX4474EUA+
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
5 SC70
5 SOT23
5 SC70
5 SOT23
6 WLP
8 SOT23
8 SO
14 TSSOP
14 SO
8 SOT23
8 µMAX
TOP
MARK
+ABT
+ADPI
+ABS
+ADPH
+BP
+AAEK
—
—
—
+AAEL
—
—
Applications
Battery-Powered
Systems
Portable Instrumentation
Pagers and Cellphones
Micropower
Thermostats
Electrometer Amplifiers
Solar-Powered Systems
Remote Sensor Active
Badges
pH Meters
Pin Configurations
MAX4470
+
IN+
A1
IN-
B1
OUT
C1
V
SS
A2
V
DD
B2
N.C.
C2
-40°C to +85°C 8 SO
MAX4474ESA+
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Selector Guide
PART
MAX4464
MAX4470
MAX4471
MAX4472
MAX4474
NO. OF
AMPLIFIERS
1
1
2
4
2
GAIN-
BANDWIDTH
40kHz
9kHz
9kHz
9kHz
40kHz
MINIMUM
STABLE GAIN
5V/V
1V/V
1V/V
1V/V
5V/V
WLP BUMP
SIDE DOWN
Pin Configurations continued at end of data sheet.
µMAX is a registered 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.
Single/Dual/Quad, +1.8V/750nA, SC70,
Rail-to-Rail Op Amps
MAX4464/MAX4470/MAX4471/MAX4472/MAX4474
ABSOLUTE MAXIMUM RATINGS
V
DD
to V
SS
...............................................................-0.3V to +6V
IN_+ or IN_-......................................(V
SS
- 0.3V) to (V
DD
+ 0.3V)
OUT_ Shorted to V
SS
or V
DD
......................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C)...................247mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C).................571mW
6-Bump WLP (derate 10.5mW/°C above +70°C) .............840mW
8-Pin SOT23 (derate 8.9mW/°C above +70°C).................714mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) ..................362mW
8-Pin SO (derate 5.88mW/°C above +70°C)....................471mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C) ...........727mW
14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW
Operating Temperature Range ......................... -40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (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
DD
= +5V, V
SS
= 0V, V
CM
= 0V, V
OUT
= V
DD
/2, R
L
=
∞
to V
DD
/2,
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
Supply Voltage Range
Supply Current (Per
Amplifier)
Input Offset Voltage
Input Bias Current
Input Offset Current
Input Common-Mode
Voltage Range
Common-Mode Rejection
Ratio
Power-Supply Rejection
Ratio
Large-Signal Voltage Gain
SYMBOL
V
DD
I
DD
V
OS
I
B
I
OS
V
CM
CMRR
PSRR
Guaranteed by the CMRR test
Specified with V
SS
≤
V
CM
≤
(V
DD
- 1.1V)
+1.8V
≤
V
DD
≤
+5.5V
R
L
= 1MΩ, V
OUT
= 50mV to V
DD
- 50mV
A
VOL
R
L
= 100kΩ, V
OUT
= 200mV to V
DD
- 200mV
R
L
= 10kΩ, V
OUT
= 200mV to V
DD
- 200mV
V
OH
Output Voltage Swing
V
OL
Swing low
specified as
V
OL
- V
SS
Swing high
specified as
V
DD
- V
OH
R
L
= 1MΩ
R
L
= 100kΩ
R
L
= 10kΩ
R
L
= 1MΩ
R
L
= 100kΩ
R
L
= 10kΩ
V
SS
70
70
90
90
95
90
120
112
100
1
4
40
0.5
1
10
9
40
90
80
kHz
degrees
5
5
4
10
mV
dB
V
DD
= +1.8V
V
DD
= +5.0V
CONDITIONS
Guaranteed by PSRR tests
MIN
1.8
0.6
0.75
±0.5
±200
±12.5
V
DD
-
1.1
1.2
±7.0
±1500
TYP
MAX
5.5
UNITS
V
µA
mV
pA
pA
V
dB
dB
Gain-Bandwidth Product
Phase Margin
GBW
φ
M
MAX4470/MAX4471/MAX4472
MAX4464/MAX4474
MAX4470/MAX4471/MAX4472
MAX4464/MAX4474
2
_______________________________________________________________________________________
Single/Dual/Quad, +1.8V/750nA, SC70,
Rail-to-Rail Op Amps
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +5V, V
SS
= 0V, V
CM
= 0V, V
OUT
= V
DD
/2, R
L
=
∞
to V
DD
/2,
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
Slew Rate
Input Voltage Noise
Output Short-Circuit
Current
Power-On Time
Power-Off Time
Capacitive Load
t
ON
t
OFF
C
LOAD
No sustained oscillations
250
SYMBOL
SR
e
n
V
OUT
=
4V step
f = 1kHz
f = 10kHz
Shorted to V
SS
(sourcing)
Shorted to V
DD
(sinking)
CONDITIONS
MAX4470/MAX4471/MAX4472
MAX4464/MAX4474
MIN
TYP
2
20
150
120
11
36
3
2
MAX
UNITS
V/ms
nV/√Hz
mA
ms
µs
pF
MAX4464/MAX4470/MAX4471/MAX4472/MAX4474
ELECTRICAL CHARACTERISTICS
(V
DD
= +5V, V
SS
= 0V, V
CM
= 0V, V
OUT
= V
DD
/2, R
L
=
∞
to V
DD
/2,
T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage Range
Supply Current (Per
Amplifier)
Input Offset Voltage
Input Offset Voltage
Temperature Coefficient
Input Bias Current
Input Common-Mode
Voltage Range
Common-Mode Rejection
Ratio
Power-Supply Rejection
Ratio
Large-Signal Voltage Gain
SYMBOL
V
DD
I
DD
V
OS
TCV
OS
I
B
V
CM
CMRR
PSRR
A
VOL
V
OH
Output Voltage Swing
V
OL
Guaranteed by the CMRR test
V
SS
≤
V
CM
≤
(V
DD
- 1.1V)
+1.8V
≤
V
DD
≤
+5.5V, 0
o
C
≤
T
A
≤
+85
o
C
+2V
≤
V
DD
≤
+5.5V, -40 C
≤
T
A
≤
+85 C
o
o
CONDITIONS
Guaranteed by PSRR tests
V
DD
= +5.0V
MIN
1.8
TYP
MAX
5.5
1.5
±15
UNITS
V
µA
mV
µV/°C
8
4.25
V
SS
56
65
65
75
75
5
15
5
5
V
DD
-
1.1
nA
V
dB
dB
dB
V
OUT
= 50mV to V
DD
- 50mV, R
L
= 1MΩ
V
OUT
= 200mV to V
DD
- 200mV, R
L
= 100kΩ
Swing high specified
as V
DD
- V
OH
Swing low specified as
V
OL
- V
SS
R
L
= 1MΩ
R
L
= 100kΩ
R
L
= 1MΩ
R
L
= 100kΩ
mV
Note 1:
All devices are production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
_______________________________________________________________________________________
3
Single/Dual/Quad, +1.8V/750nA, SC70,
Rail-to-Rail Op Amps
MAX4464/MAX4470/MAX4471/MAX4472/MAX4474
Typical Operating Characteristics
(V
DD
= +5V, V
SS
= 0V, V
CM
= 0V, R
L
= 100kΩ to V
DD
/2, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT PER AMPLIFIER vs.
SUPPLY VOLTAGE
MAX4470–74 toc01
SUPPLY CURRENT PER AMPLIFIER vs.
TEMPERATURE
MAX4470–74 toc02
OFFSET VOLTAGE vs.
TEMPERATURE
0.45
0.40
OFFSET VOLTAGE (mV)
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
MAX4470–74 toc03
0.9
0.8
SUPPLY CURRENT (µA)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.9
0.8
SUPPLY CURRENT (µA)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.50
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
TEMPERATURE (°C)
OFFSET VOLTAGE
vs. COMMON-MODE VOLTAGE
MAX4470-74 toc04
INPUT BIAS CURRENT vs.
TEMPERATURE
MAX4470–74 toc05
INPUT BIAS CURRENT vs.
COMMON-MODE VOLTAGE
-10
INPUT BIAS CURRENT (pA)
-20
-30
-40
-50
-60
-70
-80
-90
MAX4470–74 toc06
0.50
0.45
0.40
OFFSET VOLTAGE (mV)
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
-50
INPUT BIAS CURRENT (pA)
-100
-150
-200
-250
-300
-350
-400
0
4.0
-50
-25
0
25
50
75
100
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
COMMON-MODE VOLTAGE (V)
TEMPERATURE (°C)
COMMON-MODE VOLTAGE (V)
POWER-SUPPLY REJECTION RATIO vs.
FREQUENCY
MAX4470–74 toc07
OUTPUT VOLTAGE SWING LOW vs.
TEMPERATURE
1.4
R
L
= 100kΩ
1.2
V
OL
- V
SS
(mV)
1.0
0.8
0.6
0.4
0.2
0
R
L
= 1MΩ
MAX4470–74 toc08
OUTPUT VOLTAGE SWING HIGH vs.
TEMPERATURE
MAX4470–74 toc09
0
-10
-20
-30
PSRR (dB)
-40
-50
-60
-70
-80
-90
-100
10
100
1k
1.6
6
5
4
3
2
1
0
R
L
= 1MΩ
R
L
= 100kΩ
10k
V
DD
- V
OH
(mV)
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
FREQUENCY (Hz)
TEMPERATURE (°C)
TEMPERATURE (°C)
4
_______________________________________________________________________________________
Single/Dual/Quad, +1.8V/750nA, SC70,
Rail-to-Rail Op Amps
Typical Operating Characteristics (continued)
(V
DD
= +5V, V
SS
= 0V, V
CM
= 0V, R
L
= 100kΩ to V
DD
/2, T
A
= +25°C, unless otherwise noted.)
COMMON-MODE REJECTION RATIO vs.
TEMPERATURE
-30
-40
-50
CMRR (dB)
-60
-70
-80
-90
-100
-110
-120
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
MAX4470–74 toc10
MAX4464/MAX4470/MAX4471/MAX4472/MAX4474
MINIMUM SUPPLY VOLTAGE
vs. TEMPERATURE
MAX4470-74 toc11
A
VOL
vs. OUTPUT VOLTAGE SWING
130
120
A
VOL
(dB)
110
100
90
80
70
60
R
L
= 10kΩ
R
L
= 1MΩ
R
L
= 100kΩ
MAX4470-74 toc12
-20
1.4
MINIMUM SUPPLY VOLTAGE (V)
1.2
1.0
0.8
0.6
0.4
0.2
0
-50
-25
0
25
50
75
140
100
2.5
3.0
3.5
4.0
4.5
5.0
TEMPERATURE (°C)
OUTPUT VOLTAGE (Vp-p)
MAX4470/MAX4471/MAX4472
GAIN AND PHASE vs. FREQUENCY
80
70
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
1
10
MAX4470–74 toc13
MAX4470/MAX4471/MAX4472
GAIN AND PHASE vs. FREQUENCY
180
135
90
PHASE (deg)
45
0
-45
-90
-135
100k
GAIN (dB)
80
70
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
1
MAX4470–74 toc14
CROSSTALK vs. FREQUENCY
MAX4470 toc15
180
135
-40
C
L
= 12pF
R
L
= 1MΩ
A
VCL
= 1000V/V
GAIN
-60
CROSSTALK (dB)
GAIN
90
PHASE (deg)
45
0
GAIN (dB)
-80
-100
PHASE
PHASE
R
L
= 1MΩ
A
VCL
= 1000V/V
C
L
= 250pF
10
100
1k
10k
-45
-120
-90
-135
100k
-140
10
100
1k
FREQUENCY (Hz)
10k
100k
100
1k
10k
FREQUENCY (Hz)
FREQUENCY (Hz)
MAX4470/MAX4471/MAX4472
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX4470–74 toc16
VOLTAGE NOISE DENSITY vs.
FREQUENCY
MAX4470–74 toc17
MAX4470/MAX4471/MAX4472 STABILITY
vs. CAPACITIVE AND RESISTIVE LOADS
MAX4470–74 toc18
10.00
10k
100k
NOISE (nV/√Hz)
THD + N (%)
1.00
1k
CAPACITIVE LOAD (pF)
10k
UNSTABLE
REGION
1k
0.10
100
0.01
10
100
1k
10k
FREQUENCY (Hz)
10
10
100
1k
FREQUENCY (Hz)
10k
100k
100
10k
100k
RESISTIVE LOAD (Ω)
1M
_______________________________________________________________________________________
5
MEMS传感器
