RS8557,RS8558,RS8559
REV B.2
1
www.run-ic.com
Zero-Drift, Rail-to-Rail I/O
CMOS Operational Amplifiers
Features
• Low Offset Voltage: 20uV
• Input Offset Drift: 0.03μV/°C
• High Gain Bandwidth Product: 4.3MHz
• Rail-to-Rail Input and Output
• High Gain, CMRR, PSRR:120dB
• High Slew Rate: 2.5V/μs
• Low Noise: 0.93uVp-p (0.01~10Hz)
• Low Power Consumption: 650μA /op amp
• Overload Recovery Time:1us
• Low Supply Voltage: +2.7 V to +5.5 V
• No External Capacitors Required
• Extended Temperature: -40°C to +125°C
Applications
• Temperature Sensors
• Medical/Industrial Instrumentation
• Pressure Sensors
• Battery-Powered Instrumentation
• Active Filtering
• Weight Scale Sensor
• Strain Gage Amplifiers
• Power Converter/Inverter
Description
The RS8557,RS8558,RS8559 series of CMOS
operational amplifiers use auto-zero techniques to
simultaneously provide very low offset voltage (50μV
max) and near-zero drift over time and temperature.
This family of amplifiers has ultralow noise, offset
and power.
This miniature, high-precision operational amplifiers
offset high input impedance and rail-to-rail input and
rail-to-rail output swing. With high gain-bandwidth
product of 4.3MHz and slew rate of 2.5V/μs.
Single or dual supplies as low as +2.7V (±1.35V)
and up to +5.5V (±2.75V) may be used.
The RS8557/RS8558/RS8559 are specified for the
extended industrial and automotive temperature
range (-40°C to 125°C ). The RS8557 single
amplifier is available in 5-lead SOT23, 8-lead
MSOP8 and 8-lead SOIC packages, The RS8558
dual amplifier is available in 8-lead SOIC and 8-lead
MSOP narrow surface mount packages, The
RS8559 quad amplifier is available in 14-lead SOIC
and 14-lead narrow TSSOP packages.
RS8557, RS8558, RS8559
2
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PIN CONFIGURATIONS
1
SOIC-8(SOP8),MSOP-8
RS8557
NC
-IN
+IN
2
3
4
V-
+
-
5
6
7
8
NC
OUT
V+
NC
OUT A
-IN A
+IN A
V-
B
A
RS8558
1
2
3
4
6
7
8
5
SOIC-8(SOP8),MSOP-8
+
+
V+
OUTB
-IN B
+IN B
OUT A 1
OUT B
-IN B
+IN B
-IN A
+IN A
V+
OUT D
-IN D
+IN D
V-
+IN C
-IN C
OUT C
RS8559
SOIC-14(SOP14),TSSOP-14
A
- +
D
-+
B
- +
C
-+
2
3
4
5
6
7
14
13
12
11
10
9
8
Note: NC indicates no internal connection
1
4
5
RS8557
SOT23-5
OUT
V-
+IN
2
3 -IN
V+
+
-