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RS321S, RS358S
RS321, RS358, RS324
1.1MHz, Rail-to-Rail I/O
CMOS Operational Amplifier
FEATURES
HIGH GAIN BANDWIDTH:1.1MHz
RAIL-TO-RAIL INPUT AND OUTPUT
0.8mV Typical Vos
INPUT VOLTAGE RANGE: -0.1V to +5.6V
with Vs = 5.5V
SUPPLY RANGE: +2.5V to +5.5V
SHUTDOWN: RS321S/RS358S
SPECIFIED UP TO +125°
C
Micro
SIZE
DESCRIPTION
The RS321, RS358, RS324, RS321S, RS358S
families of products offer low voltage operation and
rail-to-rail input and output, as well as excellent
speed/power consumption ratio, providing an
excellent bandwidth (1.1MHz) and slew rate of
0.5V/us. The op-amps are unity gain stable and
feature an ultra-low input bias current.
The devices are ideal for sensor interfaces, active
filters and portable applications. The RS321S,
RS358S include a shutdown mode. Under logic
control, the amplifiers can be switched from normal
operation to a standby current that is less than
1uA.The RS321, RS358, RS324, RS321S, RS358S
families of operational amplifiers are specified at the
full temperature range of −40° to +125° under
C
C
single or dual power supplies of 2.5V to 5.5V.
PACKAGES: SOT23-5, SOT23-6
APPLICATIONS
SENSORS
PHOTODIODE AMPLIFICATION
ACTIVE FILTERS
TEST EQUIPMENT
DRIVING A/D CONVERTERS
PIN CONFIGURATIONS
RS321
OUT
1
5
V+
OUT
RS321S
1
2
3
6
V+
RS358S
RS321
NC
-IN
+IN
V-
1
2
3
4
SOIC-8,MSOP-8
8
NC
V+
OUT
OUT A
1
10
V+
OUT B
-IN B
+IN B
V-
+IN
2
3
V-
5
+
+
-
+
-
EN
-IN
7
6
-IN A
+IN A
2
3
-
+
9
4
-IN
+IN
4
5
NC
V-
En A
4
5
MSOP-10
SOT23-5
SOT23-6
+
RS321B
+ IN
1
5
V+
RS321S
NC
-IN
1
2
3
4
SOIC-8
8
EN
V+
OUT
OUT A
1
V-
- IN
2
3
7
6
4
SOT23-5
OUT +IN
V-
+
-
-IN A
+IN A
2
3
4
+
A
B
+
5
NC
V-
SOIC-8,MSOP-8,TDFN-8
Note: NC indicates no internal connection
REV B.2
1
-
RS358
A
B
-
8
7
6
En B
RS324
8
7
6
5
V+
OUTB
-IN B
+IN B
OUT A
-IN A
1
2
A
- +
D
+ -
14
13
OUT D
-IN D
-
+
+IN A
V+
3
4
5
12
11
10
+IN D
V-
+IN C
+IN B
-IN B
OUT B
6
7
- +
B
+ -
C
9
8
-IN C
OUT C
SOIC-14,TSSOP-14
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RS321S, RS358S
RS321, RS358, RS324
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage, V+ to V-...............................................7.0V
(2)
Input Terminals, Voltage …………... – 0.5 to (V+) + 0.5V
(2)
Current …………………....…..... ±
10mA
Storage Temperature ……….…………… −65° to +150°
C
C
Operating Temperature ……….………… −40° to +125°
C
C
Junction Temperature................................................150°
C
Package Thermal Resistance @ T
A
= +25°
C
SOT23-5, SOT23-6………………….………………200°
C/W
MSOP-10, SOIC-8 …………………….…………... 150°
C/W
SOIC-14, TSSOP-14………….……….……………100°
C/W
Lead Temperature (Soldering, 10s) ……………........260°
C
ESD Susceptibility
HBM …......................................................................5000V
MM ……………………….........………………...……….400V
(1)
Stresses above these ratings may cause permanent damage. Exposure
to absolute maximum conditions for extended periods may degrade
device reliability. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those
specified is not implied.
(2)
Input terminals are diode-clamped to the power-supply rails. Input
signals that can swing more than 0.5V beyond the supply rails should
be current-limited to 10mA or less.
ESD SENSITIVITY CAUTION
ESD damage can range from subtle performance
degradation to complete device failure. Precision
integrated circuits may be more susceptible to
damage because very small parametric changes
could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
PRODUCT
ORDERING NUMBER
RS321XK
RS321
RS321XF
RS321BXF
RS321XM
RS321S
RS321SXK
RS321SXH
RS358XK
RS358
RS358XM
RS358XT
RS358S
RS324
RS358SXN
RS324XP
RS324XQ
TEMPERATURE
RANGE
-40℃~125℃
-40℃~125℃
-40℃~125℃
-40℃~125℃
-40℃~125℃
-40℃~125℃
-40℃~125℃
-40℃~125℃
-40℃~125℃
-40℃~125℃
-40℃~125℃
-40℃~125℃
PACKAGE
LEAD
SOIC-8
SOT23-5
SOT23-5
MSOP-8
SOIC-8
SOT23-6
SOIC-8
MSOP-8
TDFN-8
MSOP-10
SOIC -14
TSSOP-14
PACKAGE
MARKING
RS321
321
321B
RS321
RS321S
321S
RS358
RS358
RS358
RS358S
RS324
RS324
PACKAGE OPTION
Tape and Reel,2500
Tape and Reel,3000
Tape and Reel,3000
Tape and Reel,3000
Tape and Reel,2500
Tape and Reel,3000
Tape and Reel,2500
Tape and Reel,3000
Tape and Reel,3000
Tape and Reel,3000
Tape and Reel,2500
Tape and Reel,3000
2
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RS321S, RS358S
RS321, RS358, RS324
ELECTRICAL CHARACTERISTICS
(At T
A
= +25C, Vs=5V, R
L
= 10kΩ connected to V
S
/2, and V
OUT
= V
S
/2, unless otherwise noted.)
PARAMETER
POWER SUPPLY
Vs
I
Q
Operating Voltage Range
Quiescent Current/Amplifier
25°
C
25°
C
25°
C
Vs= 2.5V to 5.5V
Vcm =(V-)+0.5V –40°C to 125°C
25°
C
25°
C
25°
C
25°
C
25°
C
–40°C to 125°C
25°
C
–40°C to 125°C
25°
C
–40°C to 125°C
-0.1
65
62
57
55
75
72
85
82
26
8
54
0.5
1.1
64
1.3
2.3
23
20
<1
3
20
V−
(V-)+2
(V-)+0.8
V+
mV
mA
V/us
MHz
°
us
us
nV/√Hz
nV/√Hz
uA
us
us
V
V
100
95
dB
75
80
dB
62
58
0.8
2.9
1
1
10
10
5.6
4.5
2.5
60
85
5.5
85
V
uA
dB
CONDITIONS
T
J
RS321S,RS358S,
RS321,RS358,RS324
MIN
TYP
MAX
UNIT
PSRR Power-Supply Rejection Ratio
INPUT
Vos
Input Offset Voltage
mV
uV/°
C
pA
pA
V
Vos TC Input Offset Voltage Average Drift -40° to 125°
C
C
I
B
Input Bias Current
Ios
Input Offset Current
Vcm
Common-Mode Voltage Range
Vs=5.5V
Vs = 5.5V, Vcm
=-0.1V to 4V
Vs = 5.5V, Vcm
= -0.1V to 5.6V
R
L
=2KΩ, Vo =
0.15V to 4.85V
A
OL
Open-Loop Voltage Gain
CMRR Common-Mode Rejection Ratio
OUTPUT
25°
C
R
L
= 10kΩ, Vo =
0.05V to 4.95V
–40°C to 125°C
R
L
= 2KΩ
R
L
= 10kΩ
25°
C
25°
C
25°
C
25°
C
25°
C
25°
C
25°
C
V
IN
• Gain
≥
V
s
f = 1 kHz
f = 10 kHz
25°
C
25°
C
25°
C
25°
C
25°
C
25°
C
Output Swing From Rail
I
out
SR
GBP
Φ
m
t
s
NOISE
e
n
Input-Referred Voltage Noise
Output Short-Circuit Current
Slew Rate
Gain-Bandwidth Product
Phase Margin
Settling Time, 0.1%
Overload Recovery Time
FREQUENCY RESPONSE
ENABLE/SHUTDOWN(RS321S,RS358S)
I
Q(OFF)
Supply Current in Shutdown
t
OFF
t
ON
V
L
V
H
Shut Down
Amplifier Is Active
25°
C
25°
C
3
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RS321S, RS358S
RS321, RS358, RS324
TYPICAL CHARACTERISTICS
At T
A
= +25C, Vs=5V, R
L
= 10kΩconnected to V
S
/2, V
OUT
= V
S
/2, unless otherwise noted.
OPEN−LOOP GAIN AND PHASE vs FREQUENCY
120
100
Gain
Phase
120
100
80
60
40
20
0
-20
10
1K
100K
40
20
0
10M
120
100
COMMON−MODE REJECTION RATIO vs
FREQUENCY
Open-Loop Gain(dB)
80
60
Phase Margin (°)
CMRR(dB)
80
60
40
20
1
10
100
1K
10K
Frequency(Hz)
INPUT VOLTAGE NOISE
SPECTRAL DENSITY vs FREQUENCY
1000
120
100
Frequency(KHz) Vs=5V
POWER−SUPPLY REJECTION RATIO vs
FREQUENCY
|
Voltage Noise (nV/√Hz)
PSRR(dB)
100
80
60
40
10
1
10
100
1K
10K
100K
20
1
10
100
1K
10K
Frequency(Hz)
Frequency(KHz) Vs=5V
QUIESCENT CURRENT vs TEMPERATURE
80
Quiescent Current(uA)
Quiescent Current(uA)
-40 -20
0 20 40 60 80 100 120 140
Temperature(℃) Vs=2.7V
75
70
65
60
55
50
45
40
QUIESCENT CURRENT vs TEMPERATURE
80
75
70
65
60
55
50
-40 -20
0 20 40 60 80 100 120 140
Temperature(℃) Vs=5V
4
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RS321S, RS358S
RS321, RS358, RS324
TYPICAL CHARACTERISTICS
At T
A
= +25C, Vs=5V, R
L
= 10kΩconnected to V
S
/2, V
OUT
= V
S
/2, unless otherwise noted.
65
63
61
59
57
55
53
51
49
47
45
SINK CURRENT vs TEMPERATURE
Source Current(mA)
-40 -20
0
20 40 60 80 100 120 140
Temperature(℃)
70
68
66
64
62
60
58
56
54
52
50
48
46
44
42
40
SOURCE CURRENT vs TEMPERATURE
Sink Current(mA)
-40 -20
0
20 40 60 80 100 120 140
Temperature(℃)
INPUT BIAS CURRENT vs TEMPERATURE
10K
SMALL−SIGNAL STEP RESPONSE
C
L
=100PF
Input Bias Current(pA)
1K
100
10
1
0.1
-40 -20
0
20
40
60
80 100 120 140
50mV/div
2us/div
Temperature(℃)
LARGE−SIGNAL STEP RESPONSE
POSITIVE OVERVOLTAGE RECOVERY
V
IN
1V/div
V
OUT
1V/div
200mV/div
C
L
=100P
0V
0V
4us/div
V
S
=±2.5V
G=-100
500ns/div
5
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