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Электронный компонент: MAX4321

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General Description
The MAX4321 operational amplifier (op amp) combines
a 5MHz gain-bandwidth product and excellent DC
accuracy with Rail-to-Rail
operation at both the inputs
and the output. This device requires only 650A and
operates from either a single +2.4V to +6.5V supply or
dual 1.2V to 3.25V supplies, although the MAX4321
typically operates down to +1.8V (0.9V). The
MAX4321 remains unity-gain stable with capacitive
loads up to 500pF and is capable of driving 250
loads
to within 200mV of either rail.
With rail-to-rail input common-mode range and output
swing, the MAX4321 is ideal for low-voltage, single-sup-
ply applications. In addition, low 1.2mV input offset volt-
age and high 2V/s slew rate make this device ideal for
signal-conditioning stages for precision, low-voltage data-
acquisition systems. The MAX4321 comes in a space-
saving 5-pin SOT23 package and is guaranteed over the
extended (-40C to +85C) temperature range.
The MAX4321 is a low-voltage, pin-for-pin compatible
upgrade for the LMC7101 that offers five-times higher
bandwidth, two-times faster slew rate, and about half the
input voltage noise density.
________________________Applications
Battery-Powered Instruments
Portable Equipment
Data-Acquisition Systems
Sensor and Signal Conditioning
Low-Power, Low-Voltage Applications
General-Purpose Low-Voltage Applications
Features
o Low-Voltage, Pin-for-Pin Upgrade for LMC7101
o Guaranteed +2.4V to +6.5V Single-Supply
Operation
o Typically Operates Down to +1.8V
o 5MHz Gain-Bandwidth Product
o 650A Quiescent Current
o Rail-to-Rail Common-Mode Input Voltage Range
o Rail-to-Rail Output Voltage Range
o Drives 250 Loads
o Unity-Gain Stable for Capacitive Loads up to
500pF
o No Phase Reversal for Overdriven Inputs
o Low-Cost Solution in SOT23-5 Package
MAX4321
Low-Cost, Low-Voltage, Rail-to-Rail,
Input/Output, SOT23 5MHz Op Amp
________________________________________________________________ Maxim Integrated Products
1
V
CC
IN-
IN+
1
5
V
EE
OUT
MAX4321
TOP VIEW
2
3
4
SOT23
MAX187
MAX4321
SHDN
3
1
2
4
5
6
8
7
V
DD
+5V
AIN
VREF
GND
DOUT
SERIAL
INTERFACE
SCLK
CS
Typical Operating Circuit
19-1649; Rev 0; 4/00
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Ordering Information
Pin Configuration/
Functional Diagram
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
PART
TEMP.
RANGE
PIN-
PACKAGE
TOP
MARK
MAX4321EUK-T
-40
C to +85C
5 SOT23-5
ADOA
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MAX4321
Low-Cost, Low-Voltage, Rail-to-Rail,
Input/Output, SOT23 5MHz Op Amp
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +5.0V, V
EE
= 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
=
connected to V
CC
/2, T
A
= +25C, 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 (V
CC
to V
EE
) ....................................-0.3V to +7V
All Other Pins ..................................(V
EE
- 0.3V) to (V
CC
+ 0.3V)
Output Short-Circuit Duration.....................................Continuous
(short to either supply)
Continuous Power Dissipation
5-pin SOT23 (derate 7.1mW/C above +70C)...........571mW
Operating Temperature Range ...........................-40C to +85C
Junction Temperature ......................................................+150C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10s) ................................ +300C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
V
CC -
V
EE
2.4
6.5
V
V
CC
= +2.4V
650
Supply Current
V
CM
= V
OUT
= V
CC
/2
V
CC
= +6.5V
725
A
Input Offset Voltage
V
OS
V
CM
= V
EE
or V
CC
1.2
3.5
mV
Input Bias Current
I
BIAS
V
CM
= V
EE
or V
CC
50
150
nA
Input Offset Current
I
OFFSET
V
CM
= V
EE
or V
CC
4
25
nA
Differential Input
Resistance
R
IN
-1.5V < V
DIFF
<+1.5V
500
k
Common-Mode Input Voltage
Range
V
CM
Inferred from CMRR test
V
EE
V
CC
V
Common-Mode Rejection
Ratio
CMRR
V
EE
V
CM
V
CC
60
91
dB
Power-Supply Rejection Ratio
PSRR
2.4V < V
CC
< 6.5V
66
100
dB
Output Resistance
R
OUT
A
V
= +1V/V
0.1
V
OUT
= 0.25V to 4.75V, R
L
= 100k
103
V
OUT
= 0.40V to 4.60V, R
L
= 600
100
Large-Signal Voltage Gain
A
V
V
OUT
= 0.40V to 4.60V, R
L
= 250
70
86
dB
V
CC
- V
OH
25
R
L
= 100k
V
OL
- V
EE
20
V
CC
- V
OH
135
R
L
= 600
V
OL
- V
EE
60
V
CC
- V
OH
200
300
Output Voltage Swing
V
OUT
R
L
= 250
V
OL
- V
EE
100
200
mV
Output Short-Circuit Current
50
mA
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MAX4321
Low-Cost, Low-Voltage, Rail-to-Rail,
Input/Output, SOT23 5MHz Op Amp
_______________________________________________________________________________________
3
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +5.0V, V
EE
= 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
=
connected to V
CC
/2, T
A
= -40C to +85C, unless otherwise noted.) (Note 1)
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +5.0V, V
EE
= 0, V
CM
= 0, V
OUT
= V
CC
/2, R
L
= 250
connected to V
CC
/2, TA = +25C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
V
CC
- V
EE
2.4
6.5
V
Supply Current
I
CC
V
CM
= V
OUT
= V
CC
/2
1200
A
Input Offset Voltage
V
OS
V
CM
= V
EE
or V
CC
6
mV
Input Offset Voltage
Temperature Coefficient
2
V/C
Input Bias Current
I
BIAS
V
CM
= V
EE
or V
CC
180
nA
Input Offset Current
I
OFFSET
V
CM
= V
EE
or V
CC
50
nA
Common-Mode Input Voltage
Range
V
CM
Inferred from CMRR test
V
EE
V
CC
V
Common-Mode Rejection Ratio
CMRR
V
EE
V
CM
V
CC
54
dB
Power-Supply Rejection Ratio
PSRR
2.4V < V
CC
< 6.5V
62
dB
Large-Signal Voltage Gain
A
V
V
OUT
= 0.40V to 4.60V, R
L
= 250
66
dB
V
CC
- V
OH
350
Output Voltage Swing
V
OUT
R
= 250
V
OL
- V
EE
250
mV
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Gain-Bandwidth Product
GBP
5
MHz
Phase Margin
64
degrees
Gain Margin
12
dB
Total Harmonic Distortion
and Noise
THD+N
10kHz tone, V
OUT
= 2Vpp,
A
V
= +1V/V
0.003
%
Slew Rate
SR
V
OUT
= 1V step
2
V/
s
Settling Time to 0.01%
t
SETTLE
V
OUT
= 2V step, A
V
= +1V/V
2
s
Turn-On Time
t
ON
V
CC
= 0 to 3V step
1
s
Input Capacitance
C
IN
3
pF
Input Noise Voltage Density
f = 1kHz
22
nV/
Hz
Input Noise Current Density
f = 1kHz
0.4
pA/
Hz
Note 1: All devices are 100% production tested at T
A
= +25C. All temperature limits are guaranteed by design and characterization.
background image
MAX4321
Low-Cost, Low-Voltage, Rail-to-Rail,
Input/Output, SOT23 5MHz Op Amp
4
_______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= +5V, V
EE
= 0, V
CM
= V
CC
/2, T
A
= +25C, unless otherwise noted.)
60
-40
100
1k
10k
1M
10M
100k
100M
GAIN AND PHASE vs. FREQUENCY
-20
FREQUENCY (Hz)
GAIN (dB)
0
20
40
PHASE
GAIN
A
V
= +1000
NO LOAD
PHASE (DEGREES)
180
144
72
0
-72
-144
-180
-108
-36
36
108
MAX4321-01
60
-40
100
1k
10k
1M
10M
100k
100M
GAIN AND PHASE vs. FREQUENCY
(WITH C
LOAD
)
-20
MAX4321-02
FREQUENCY (Hz)
GAIN (dB)
0
20
40
PHASE
GAIN
A
V
= +1000
R
L
=
C
L
= 500pF
PHASE (DEGREES)
180
144
72
0
-72
-144
-180
-108
-36
36
108
0
-100
10
100
1k
100k
1M
10M
10k
100M
POWER-SUPPLY REJECTION
vs. FREQUENCY
-80
MAX4321-03
FREQUENCY (Hz)
PSR (dB)
-60
-40
-20
A
V
= +1
100
0.01
100
1k
100k
1M
10M
10k
100M
OUTPUT IMPEDANCE
vs. FREQUENCY
0.1
MAX4321-04
FREQUENCY (Hz)
OUTPUT IMPEDANCE (
)
1
10
A
V
= +1
900
500
550
600
650
700
750
800
850
-40 -25 -10
5
20
35
50
65
80
95
SUPPLY CURRENT vs. TEMPERATURE
MAX4321-05
TEMPERATURE (
C)
SUPPLY CURRENT (
A)
V
CC
= 6.5V
V
CC
= 2.7V
-3.00
-2.25
-0.75
-1.50
0
1.50
0.75
2.25
3.00
-40 -25 -10
5
20
35
50
65
80
95
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX4321-06
TEMPERATURE (
C)
VOLTAGE (mV)
-50
0
1
2
3
4
5
6
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
MAX4321-07
COMMON-MODE VOLTAGE (V)
INPUT BIAS CURRENT (nA)
-40
-30
-20
-10
0
10
20
30
40
50
V
CC
= 2.7V
V
CC
= 6.5V
-60
-50
-40 -25 -10
5
20
35
50
65
80
95
INPUT BIAS CURRENT
vs. TEMPERATURE
MAX4321-08
TEMPERATURE (
C)
INPUT BIAS CURRENT (nA)
-40
-30
-20
-10
0
10
20
30
40
50
V
CC
= 6.5V, V
CM
= V
CC
V
CC
= 2.7V, V
CM
= V
EE
V
CC
= 2.7V, V
CM
= V
CC
V
CC
= 6.5V, V
CM
= V
EE
120
80
85
90
95
100
105
110
115
-40 -25 -10
5
20
35
50
65
80
95
COMMON-MODE REJECTION
vs. TEMPERATURE
MAX4321-09
TEMPERATURE (
C)
COMMON-MODE REJECTION (dB)
V
CM
= 0 TO 5.0V
V
CM
= -0.2V TO 5.2V
background image
MAX4321
Low-Cost, Low-Voltage, Rail-to-Rail,
Input/Output, SOT23 5MHz Op Amp
_______________________________________________________________________________________
5
250
0
-40 -25 -10
5
20
35
50
65
80
95
MINIMUM OUTPUT VOLTAGE
vs. TEMPERATURE
50
200
MAX4321-10
TEMPERATURE (
C)
V
OUT
- V
EE
(mV)
150
100
R
L
TO V
CC
V
CC
= 6.5V, R
L
= 500
V
CC
= 2.7V, R
L
= 100k
V
CC
= 2.7V, R
L
= 500
V
CC
= 6.5V, R
L
= 100k
0
50
100
150
200
250
300
-40 -25 -10
5
20
35
50
65
80
95
MAXIMUM OUTPUT VOLTAGE
vs. TEMPERATURE
MAX4321-11
TEMPERATURE (
C)
V
CC
- V
OUT
(mV)
R
L
TO V
EE
V
CC
= 6.5V, R
L
= 500
V
CC
= 2.7V, R
L
= 100k
(BOTTOM)
V
CC
= 2.7V, R
L
= 500
V
CC
= 6.5V, R
L
= 100k
(TOP)
120
60
0
600
110
OUTPUT VOLTAGE: FROM V
CC
(mV)
GAIN (dB)
300
90
80
70
100
200
500
100
400
MAX4321-12
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
V
CC
= 2.7V
R
L
TO V
EE
R
L
= 500
R
L
= 100k
R
L
= 10k
R
L
= 2k
120
60
0
600
110
OUTPUT VOLTAGE: FROM V
CC
(mV)
GAIN (dB)
300
90
80
70
100
200
500
100
400
MAX4321-13
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
V
CC
= 6.5V
R
L
TO V
EE
R
L
= 500
R
L
= 100k
R
L
= 10k
R
L
= 2k
120
60
0
600
110
GAIN (dB)
300
90
80
70
100
200
500
100
400
MAX4321-14
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
R
L
= 500
R
L
= 100k
R
L
= 10k
R
L
= 2k
V
CC
= 2.7V
R
L
TO V
CC
OUTPUT VOLTAGE: FROM V
EE
(mV)
120
60
0
600
110
GAIN (dB)
300
90
80
70
100
200
500
100
400
MAX4321-15
LARGE-SIGNAL GAIN
vs. OUTPUT VOLTAGE
V
CC
= 6.5V
R
L
TO V
CC
R
L
= 500
R
L
= 100k
R
L
= 10k
R
L
= 2k
OUTPUT VOLTAGE: FROM V
EE
(mV)
125
75
-40 -25 -10
5
20
35
50
65
80
95
LARGE-SIGNAL GAIN
vs. TEMPERATURE
85
115
MAX4321-16
TEMPERATURE (
C)
GAIN (dB)
105
95
80
90
120
110
100
V
CC
= 2.7V,
R
L
TO V
EE
V
CC
= 6.5V, R
L
TO V
CC
V
CC
= 2.7V, R
L
TO V
CC
R
L
= 500
V
OUT
(p-p) = V
CC
- 1V
V
CC
= 6.5V,
R
L
TO V
EE
125
75
-40 -25 -10
5
20
35
50
65
80
95
LARGE-SIGNAL GAIN
vs. TEMPERATURE
85
115
MAX4321-17
TEMPERATURE (
C)
GAIN (dB)
105
95
80
90
120
110
100
V
OUT
(p-p) = V
CC
- 600mV
R
L
= 100k
V
CC
= 6.5V, R
L
TO V
EE
V
CC
= 2.7V, R
L
TO V
CC
V
CC
= 2.7V, R
L
TO V
EE
V
CC
= 6.5V, R
L
TO V
CC
1.2
1.3
1.5
1.4
1.6
1.7
1.8
1.9
-40 -25 -10
5
20
35
50
65
80
95
MINIMUM OPERATING VOLTAGE
vs. TEMPERATURE
MAX4321-18
TEMPERATURE (
C)
MINIMUM OPERATING VOLTAGE (V)
Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= 0, V
CM
= V
CC
/2, T
A
= +25C, unless otherwise noted.)