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RS8751, RS8752, RS8754
250MHz, Rail-to-Rail Output
CMOS Operational Amplifier
FEATURES
•
•
•
•
•
•
•
HIGH GAIN BANDWIDTH:250MHz
RAIL-TO-RAIL OUTPUT
1.5mV Typical Vos
INPUT VOLTAGE RANGE: -0.2V to +3.9V
with Vs = 5V
SUPPLY RANGE: +2.5V to +5.5V
SPECIFIED UP TO +125°
C
Micro
SIZE
DESCRIPTION
The RS875X families of voltage-feedback (VFB)
products offer low voltage operation, negative-rail
input, rail-to-rail output, as well as excellent
speed/power consumption ratio, providing an
excellent bandwidth (250MHz) and slew rate of
180V/us. The op-amps are unity gain stable and
feature an ultra-low input bias current.
These amplifiers set an industry-leading power-to-
performance ratio for rail-to-rail amplifiers. The
RS875X families of operational amplifiers are
specified at the full temperature range of −40° to
C
+125° under single or dual power supplies of 2.5V
C
to 5.5V.
PACKAGES: SOT23-5
APPLICATIONS
•
•
•
•
AUDIO ADC INPUT BUFFERS
PHOTODIODE PREAMP
HIGH-DENSITY SYSTEMS
PORTABLE SYSTEMS
DRIVING A/D CONVERTERS
•
PIN CONFIGURATIONS
RS8751
OUT
V-
1
2
RS8752
5
V+
OUT A
-IN A
4
-IN
1
2
3
+
8
V+
OUTB
-IN B
+IN
3
+
-
7
A
B
+
RS8751
SOT23-5
+IN A
V-
6
5
4
+IN B
NC
-IN
1
2
3
4
8
NC
V+
OUT
NC
OUT A
1
SOIC-8(SOP8),MSOP-8,
TDFN-3x3-8L,TSSOP-8
+IN
V-
+
RS8751B
+ IN
1
5
V+
SOIC-8(SOP8),MSOP-8
V-
- IN
2
3
-
4
SOT23-5
OUT
Note: NC indicates no internal connection
REV B.2
-
7
6
5
RS8754
14
OUT D
-IN D
+IN D
V-
-IN A
+IN A
V+
2
3
4
A
- +
D
+ -
13
12
11
+
+IN B
-IN B
5
6
7
- +
B
+ -
C
10
9
8
+IN C
-IN C
OUT C
OUT B
SOIC-14(SOP14),TSSOP-14
1
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RS8751, RS8752, RS8754
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage, V+ to V-...............................................7.0V
Input Terminals, Voltage
(2)
…………... – 0.5 to (V+) + 0.5V
Current
(2)
…………………....…..... ±
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 ,TSSOP-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
2
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RS8751, RS8752, RS8754
ELECTRICAL CHARACTERISTICS
(At TA = +25℃, VS = 5V, G = +2, RF = 1K Ω, and RL = 1KΩ connected to VS/2, V
IN_CM
=Vs/2, unless otherwise noted.)
PARAMETER
POWER SUPPLY
Vs
IQ
PSRR
Operating Voltage Range
Quiescent Current/Amplifier
Power-Supply Rejection Ratio
CONDITIONS
RS8751,RS8752,RS8754
MIN
2.5
2.9
TYP
MAX
5.5
3.5
UINTS
V
mA
dB
Vs=2.5V to 5.5V,
Vcm=(V-)+0.5V
70
90
INPUT
Vos
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Offset Current
Common-Mode Voltage
Range
Common-Mode Rejection
Ratio
Vcm=Vs/2
Vcm=Vs/2, -40° ≤ TA ≤125°
C
C
±1.5
4
1
1
Vs= 5V
Vs= 5.5V, Vcm=-0.2V to 3.5V
-0.2
66
85
10
10
3.9
±7.5
mV
Δ
Vos/
Δ
T
IB
Ios
Vcm
CMRR
µ /
°
V C
pA
pA
V
dB
OUTPUT
AOL
Open-Loop Voltage Gain
Output Swing From Rail
Iout
Iout
Output Current Source
Output Current Sink
Small-Signal Bandwidth
V
OUT
=100mVpp,G=1
V
OUT
=100mVpp,G=2
V
OUT
=100mVpp,G=5
V
OUT
=100mVpp,G=10
SR
GBP
Slew Rate
Gain-Bandwidth Product
Vs=5.0V, R
L
=1KΩ, Vo=Vs-0.2V
Vs=5.0V, R
L
=150Ω, Vo=Vs-0.3V
R
L
=1KΩ
95
78
110
85
23
85
125
250
130
33
15
180
250
62
f = 0.1 Hz to 10 Hz
f = 1 MHz
13
8
dB
dB
mV
mA
mA
MHz
MHz
MHz
MHz
V/us
MHz
°
μVpp
nV/√Hz
FREQUENCY RESPONSE
PM
NOISE
e
n
p-p
e
n
Phase Margin
Input Voltage Noise
Input Voltage Noise Density
3
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RS8751, RS8752, RS8754
TYPICAL CHARACTERISTICS
At TA = +25℃, VS = 5V, G = +2, RF = 1K Ω, and RL = 1KΩ connected to VS/2, V
IN_CM
=Vs/2, unless otherwise noted
Non-Inverting Small-Signal Frequency
Response
2
-3dB_GW_Gain=1
1
Normalized Gain (dB)
G=1,
RF=24Ω
-2
-4
G=2
G=5
Normalized Gain (dB)
0
RL=1KΩ
-1
-3
-5
-7
-9
10M
RL=150Ω
-6
-8
-10
100K
G=10
1M
10M
100M
1000M
100M
1000M
Frequency(Hz)
Frequency(Hz) V
s
=5V
-3dB_GW_Gain=2
1
8
RL=10KΩ
Frequency Response for Various CL
Normalized Gain (dB)
0
-1
-2
-3
-4
-5
1M
10M
100M
RL=50Ω
RL=150Ω
RL=1KΩ
Normalized Gain (dB)
6
4
2
0
-2
-4
CL=100P
CL=47P
CL=6P
-6
-8
1M
10M
100M
1000M
1000M
Frequency(Hz)
Frequency(Hz)
V
s
=5V G=2 RF=887
AC Response
0.4
Frequency Response for Various RL
2
Normalized Gain (dB)
RL=10KΩ
RL=1KΩ
RL=150Ω
RL=50Ω
Normalized Gain (dB)
1000M
0
-2
-4
-6
-8
-10
-12
-14
10M
100M
0.2
0
-0.2
-0.4
-0.6
1M
10M
Temperature(℃) V
s
=5V
100M
Frequency(Hz) V
s
=5V G=2 RF=887
4
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RS8751, RS8752, RS8754
TYPICAL CHARACTERISTICS
At TA = +25℃, VS = 5V, G = +2, RF = 1K Ω, and RL = 1KΩ connected to VS/2, V
IN_CM
=Vs/2, unless otherwise noted
SINK CURRENT vs TEMPERATURE
150
145
140
135
130
125
120
115
110
105
100
-40 -20
0
20 40 60 80 100 120 140
Temperature(℃)
INPUT BIAS CURRENT vs TEMPERATURE
10K
SOURCE CURRENT vs TEMPERATURE
130
120
Source Current(mA)
Sink Current(mA)
110
100
90
80
70
60
50
-40 -20
0
20 40 60 80 100 120 140
Temperature(℃)
SMALL−SIGNAL STEP RESPONSE
Input Bias Current(pA)
1K
100
10
1
0.1
-40 -20
0
20
40
60
80 100 120 140
50mV/div
10ns/div
Temperature(℃)
LARGE−SIGNAL STEP RESPONSE
POSITIVE OVERLOAD RECOVERY
0V
V
IN
1V/div
200mV/div
V
OUT
V
S
=±2.5V
G=-100
0V
10ns/div
1V/div
50ns/div
5
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