LMX321-LMX358.pdf

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19-2103; Rev 0; 8/01
Single/Dual/Quad, General-Purpose,
Low-Voltage, Rail-to-Rail Output Op Amps
General Description
The LMX321/LMX358/LMX324 are single/dual/quad,
low-cost, low-voltage, pin-to-pin compatible upgrades
to the LMV321/LMV358/LMV324 family of general pur-
pose op amps. These devices offer Rail-to-Rail
®
out-
puts and an input common-mode range that extends
below ground. These op amps draw only 105µA of qui-
escent current per amplifier, operate from a single
+2.3V to +7V supply, and drive 2kΩ resistive loads to
within 40mV of either rail. The LMX321/LMX358/LMX324
are unity-gain stable with a 1.3MHz gain-bandwidth
product capable of driving capacitive loads up to
400pF. The combination of low voltage, low cost, and
small package size makes these amplifiers ideal for
portable/battery-powered equipment.
The LMX321 single op amp is available in ultra-small 5-
pin SC70 and space-saving 5-pin SOT23 packages.
The LMX358 dual op amp is available in the tiny 8-pin
SOT23 package. The LMX324 quad op amp is avail-
able in 14-pin TSSOP and SO packages.
Features
o
Upgrade to LMV321/LMV358/LMV324 Family
o
Single +2.3V to +7V Supply Voltage Range
o
Available in Space-Saving Packages
5-Pin SC70 (LMX321)
8-Pin SOT23 (LMX358)
14-Pin TSSOP (LMX324)
o
1.3MHz Gain-Bandwidth Product
o
105µA Quiescent Current per Amplifier
(V
CC
= +2.7V)
o
No Phase Reversal for Overdriven Inputs
o
No Crossover Distortion
o
Rail-to-Rail Output Swing
o
Input Common-Mode Voltage Range: V
EE
- 0.2V
to V
CC
- 0.8V
o
Drives 2kΩ Resistive Loads
LMX321/LMX358/LMX324
Applications
Cellular Phones
Laptops
Low-Power, Low-Voltage Applications
Portable/Battery-Powered Equipment
Cordless Phones
Active Filters
PART
LMX321AXK-T
LMX321AUK-T
LMX358AKA-T
LMX358ASA
LMX358AUA
LMX324ASD
LMX324AUD
Ordering Information
TEMP. RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
5 SC70-5
5 SOT23-5
8 SOT23-8
8 SO
8
µMAX
14 SO
14 TSSOP
Selector Guide appears at end of data sheet.
Pin Configurations
TOP VIEW
OUT1 1
IN1- 2
OUT1 1
IN+ 1
V
EE
2
IN1+ 3
IN- 3
4 OUT
V
EE
4
5 IN2+
6 IN2-
8 V
CC
7 OUT2
IN1+ 3
V
CC
4
IN2+ 5
IN2- 6
OUT2 7
14 OUT4
13 IN4-
12 IN4+
11 V
EE
10 IN3+
9 IN3-
8 OUT3
LMX321
5 V
CC
IN1- 2
LMX358
LMX324
SC70-5/SOT23-5
SOT23-8/SO/µMAX
TSSOP/SO
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Single/Dual/Quad, General-Purpose,
Low-Voltage, Rail-to-Rail Output Op Amps
LMX321/LMX358/LMX324
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
to V
EE
) ....................................-0.3V to +8V
Differential Input Voltage (V
IN+
- V
IN-
) ........................V
EE
to V
CC
OUT_ to V
EE
...............................................-0.3V to (V
CC
+ 0.3V)
Output Short-Circuit Duration
OUT_ Shorted to V
CC
or V
EE
..................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70-5 (derate 3.1mW/°C above +70°C)...........247mW
5-Pin SOT23-5 (derate 7.1mW/°C above +70°C) ........571mW
8-Pin SOT23-8 (derate 7.52mW/°C above +70°C) ......602mW
8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW
14-Pin SO (derate 8.3mW/°C above +70°C)................667mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°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
= +2.7V, V
EE
= 0, V
OUT
= V
CC
/2, V
CM
= 1V, R
L
> 1MΩ,
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
DC Characteristics
Input Offset Voltage
Input Offset Voltage Average
Drift
Input Bias Current
Input Offset Current
Common-Mode Rejection
Ratio
Power-Supply Rejection Ratio
Input Common-Mode Voltage
Range
Large-Signal Voltage Gain
V
OS
TCV
OS
I
B
I
OS
CMRR
PSRR
V
CM
A
VOL
-0.2V < V
CM
< 1.8V
2.3V < V
CC
< 7V, V
OUT
= 1V
For CMRR > 72dB
Limit
Typ
V
CC
- V
OH
V
OL
V
CC
- V
OH
V
OL
72
82
-0.2
-0.2
20
120
12
10
40
25
105
210
420
1
1.3
64
24
f = 1kHz
f = 1kHz
66
0.13
50
40
110
60
150
300
600
V/µs
MHz
degrees
dB
nV/√Hz
pA/√Hz
µA
mV
1
6
18
1
92
96
1.8
1.9
50
8
6
mV
µV/
o
C
nA
nA
dB
dB
V
V/mV
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
R
L
= 2kΩ to V
EE
, 0.3V < V
OUT
< 2.4V
R
L
= 10kΩ to 1.35V
Output Voltage Swing
V
OUT
R
L
= 2kΩ to 1.35V
LMX321 (Single)
Supply Current
AC Characteristics
Slew Rate
Gain-Bandwidth Product
Phase Margin
Gain Margin
Input Noise Voltage Density
Input Current Noise Density
I
CC
LMX358 (Dual)
LMX324 (Quad)
SR
GBW
φ
M
GM
e
n
i
n
1V step Input
C
L
= 200pF
2
_______________________________________________________________________________________
Single/Dual/Quad, General-Purpose,
Low-Voltage, Rail-to-Rail Output Op Amps
ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V, V
EE
= 0, V
OUT
= V
CC
/2, V
CM
= 1V, R
L
> 1MΩ, T
A
=
-40°C to +125°C,
unless otherwise noted.) (Note 1)
PARAMETER
DC Characteristics
Input Offset Voltage
Input Bias Current
Input Offset Current
Common-Mode Rejection
Ratio
Power-Supply Rejection Ratio
Input Common-Mode Voltage
Range
Large-Signal Voltage Gain
V
OS
I
B
I
OS
CMRR
PSRR
V
CM
A
VOL
-0.1 < V
CM
< 1.7V
2.3V < V
CC
< 7V, V
OUT
= 1V
For CMRR > 60dB
Limit
Typ
V
CC
- V
OH
V
OL
V
CC
- V
OH
V
OL
60
75
-0.1
-0.1
10
130
50
150
70
180
360
720
µA
mV
1.7
1.8
9
70
15
mV
nA
nA
dB
dB
V
V/mV
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LMX321/LMX358/LMX324
R
L
= 2kΩ to V
EE
, 0.3V < V
OUT
< 2.4V
R
L
= 10kΩ to 1.55V
Output Voltage Swing
V
OUT
R
L
= 2kΩ to 1.35V
LMX321 (Single)
Supply Current
I
CC
LMX358 (Dual)
LMX324 (Quad)
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= 0, V
OUT
= V
CC
/2, V
CM
= 2V, R
L
> 1MΩ,
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
DC Characteristics
Input Offset Voltage
Input Offset Voltage Average
Drift
Input Bias Current
Input Offset Current
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
Input Common-Mode Voltage
Range
Large-Signal Voltage Gain
V
OS
TCV
OS
I
B
I
OS
CMRR
PSRR
V
CM
A
VOL
-0.2 < V
CM
< 4.1V
2.3V < V
CC
< 7V, V
OUT
= 1V,
V
CM
= 1V
For CMRR > 72dB
R
L
= 2kΩ to V
EE
,
0.3V < V
OUT
< 4.7V
Limit
Typ
72
82
-0.2
-0.2
40
200
1
6
18
1
92
96
4.1
4.2
50
8
6
mV
µV/
o
C
nA
nA
dB
dB
V
V/mV
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
_______________________________________________________________________________________
3
Single/Dual/Quad, General-Purpose,
Low-Voltage, Rail-to-Rail Output Op Amps
LMX321/LMX358/LMX324
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, V
EE
= 0, V
OUT
= V
CC
/2, V
CM
= 2V, R
L
> 1MΩ,
T
A
= +25°C,
unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
R
L
= 10kΩ to 2.5V
Output Voltage Swing
V
OUT
R
L
= 2kΩ to 2.5V
Output Short-Circuit Current
I
SC
Sourcing, V
OUT
= 0
Sinking, V
OUT
= 5V
LMX321 (Single)
Supply Current
AC Characteristics
Slew Rate
Gain-Bandwidth Product
Phase Margin
Gain Margin
Input Noise Voltage Density
Input Noise Current Density
SR
GBW
φ
M
GM
e
n
i
n
f = 1kHz
f = 1kHz
3V step input
C
L
= 200pF
1
1.3
65
25
65
0.13
V/µs
MHz
degrees
dB
nV/√Hz
pA/√Hz
I
CC
LMX358 (Dual)
LMX324 (Quad)
V
CC
- V
OH
V
OL
V
CC
- V
OH
V
OL
5
10
MIN
TYP
20
12
65
40
25
28
120
240
480
170
340
680
µA
MAX
60
40
130
80
mA
mV
UNITS
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= 0, V
OUT
= V
CC
/2, V
CM
= 2V, R
L
> 1MΩ,
T
A
= -40°C to +125°C,
unless otherwise noted.) (Note 1)
PARAMETER
DC Characteristics
Input Offset Voltage
Input Bias Current
Input Offset Current
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
Input Common-Mode Voltage
Range
Large-Signal Voltage Gain
V
OS
I
B
I
OS
CMRR
PSRR
V
CM
A
VOL
-0.1 < V
CM
< 4.0V
2.3V < V
CC
< 7V, V
OUT
= 1V, V
CM
= 1V
For CMRR > 63dB
Limit
Typ
V
CC
- V
OH
V
OL
V
CC
- V
OH
V
OL
63
75
-0.1
-0.1
20
170
70
190
90
210
420
840
µA
mV
4.0
4.1
9
70
15
mV
nA
nA
dB
dB
V
V/mV
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
R
L
= 2kΩ to V
EE
, 0.3V < V
OUT
< 4.7V
R
L
= 10kΩ to 2.5V
Output Voltage Swing
V
OUT
R
L
= 2kΩ to 2.5V
LMX321 (Single)
Supply Current
I
CC
LMX358 (Dual)
LMX324 (Quad)
Note 1:
Specifications are 100% tested at T
A
= +25°C (exceptions noted). All temperature limits are guaranteed by design.
4
_______________________________________________________________________________________
Single/Dual/Quad, General-Purpose,
Low-Voltage, Rail-to-Rail Output Op Amps
Typical Operating Characteristics
(T
A
= +25°C, V
EE
= 0, unless otherwise noted.)
LMX321/LMX358/LMX324
SUPPLY CURRENT PER AMPLIFIER
vs. SUPPLY VOLTAGE
LMX321 toc01
INPUT BIAS CURRENT
vs. TEMPERATURE
LMX321 toc02
SOURCE CURRENT
vs. OUTPUT VOLTAGE
V
CC
= 2.7V
LMX321 toc03
160
SUPPLY CURRENT PER AMPLIFIER (µA)
140
120
100
80
60
40
20
0
0
1
2
3
4
5
6
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
T
A
= +125°C
-10
-11
INPUT BIAS CURRENT (nA)
-12
-13
-14
-15
-16
-17
-18
-19
-20
V
CC
= +5V, V
IN
= V
CC
/2
100
SOURCE CURRENT (mA)
10
1
0.1
0.01
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
0.01
0.1
1
10
OUTPUT VOLTAGE REFERENCED TO V
CC
(V)
7
SUPPLY VOLTAGE (V)
SOURCE CURRENT
vs. OUTPUT VOLTAGE
LMX321 toc04
SINK CURRENT
vs. OUTPUT VOLTAGE
LMX321 toc05
SINK CURRENT
vs. OUTPUT VOLTAGE
V
CC
= 5V
LMX321 toc06
100
V
CC
= 5V
10
100
V
CC
= 2.7V
100
SOURCE CURRENT (mA)
SINK CURRENT (mA)
1
1
SINK CURRENT (mA)
0.01
0.1
1
10
10
10
1
0.1
0.1
0.1
0.01
0.01
0.1
1
10
OUTPUT VOLTAGE REFERENCED TO V
CC
(V)
0.01
0.001
0.01
0.001
0.01
0.1
1
10
OUTPUT VOLTAGE REFERENCED TO V
EE
(V)
OUTPUT VOLTAGE REFERENCED TO V
EE
(V)
OUTPUT VOLTAGE SWING
vs. SUPPLY VOLTAGE
LMX321 toc07
OUTPUT VOLTAGE SWING
vs. SUPPLY VOLTAGE
LMX321 toc08
INPUT VOLTAGE NOISE
vs. FREQUENCY
600
550
500
450
400
350
300
250
200
150
100
50
0
1
10
V
CC
= 2.7V TO 5V, V
CM
= V
CC
/2
LMX321 toc09
100
R
L
= 2kΩ
90
OUTPUT VOLTAGE SWING (mV)
80
70
60
50
40
30
20
2
3
4
5
6
7
SUPPLY VOLTAGE (V)
NEGATIVE SWING (V
OL
)
POSITIVE SWING
(V
CC
- V
OH
)
35
R
L
= 10kΩ
OUTPUT VOLTAGE SWING (mV)
30
25
20
15
10
NEGATIVE SWING (V
OL
)
5
2
3
4
5
6
7
SUPPLY VOLTAGE (V)
POSITIVE SWING
(V
CC
- V
OH
)
INPUT VOLTAGE NOISE (nV/√Hz)
100
1k
10k
100k
FREQUENCY (Hz)
_______________________________________________________________________________________
5

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