下载
1
5V, Rail-Rail I/O, Zero-Drift, Programmable Gain
Instrumentation Amplifiers
ISL28533, ISL28534, ISL28535, ISL28633, ISL28634, ISL28635
The ISL28533, ISL28534, ISL28535, ISL28633, ISL28634,
and ISL28635 are 5V Zero-Drift Rail-to-Rail Input/Output
Programmable Gain Instrumentation Amplifiers (PGIA). These
instrumentation amplifiers feature low offset, low noise, low
gain error and high CMRR. They are ideal for high precision
applications over the wide industrial temperature range.
These Instrumentation Amplifiers are designed with a unique
2-bit, 3-state logic interface that allows up to 9 selectable gain
settings. The ISL2853x single-ended output includes and
additional uncommitted zero-drift amplifier, useful to buffer
the REF input or used as a precision amplifier. The ISL2863x
differential output amplifier includes a reference pin to set the
common mode output voltage to interface with differential
input ADCs.
Applications
• Pressure and strain gauge transducers
•Weight scales
•Flow sensors
• Biometric: ECG/blood glucose
• Temperature sensors
• Test and measurement
• Data acquisition systems
• Low ohmic current sense
Features
• Ultra high precision front end amplifier
• Zero drift instrumentation amplifier
• Pin selectable 9 gain settings: G = 1 to 1,000
• Rail-to-Rail input/output
• Single ended output (ISL28533, ISL28534, ISL28535)
• Differential output (ISL28633, ISL28634, ISL28635)
• RFI filtered inputs improve EMI rejection
• Single supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V to 5.5V
• Dual supply . . . . . . . . . . . . . . . . . . . . . . . . . ±1.25V to ±2.75V
• Low input offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5µV, Max
• Low input offset drift . . . . . . . . . . . . . . . . . . . . . 50nV/°C, Max
• High CMRR . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138dB, G = 100
• Low gain error. . . . . . . . . . . . . . . . . . . . . <0.4%, All Gains, Max
• Gain bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3MHz
• Input voltage noise (0.1Hz to 10Hz). . . . . . . . . . . . . . 0.4µV
P-P
• Operating temperature range. . . . . . . . . . . .-40°C to +125°C
Related Literature
• “DAQ on a Stick, Strain Gauge with ProgrammableChopper
Stabilized IN-Amp” AN1853
• “ISL2853x_63xEV2Z User's Guide” AN1880
FIGURE 1. ISL2853x SINGLE-ENDED OUTPUT FIGURE 2. ISL2863x DIFFERENTIAL OUTPUT
+
-
+
-
INA-
A2
A1
INA+
+
-
+
-
REF
OUTA
A3
A4
R
G
R
G
9 GAIN
CONTROL
G0
G1
IN+
IN-
OUT
VA-
VA+
20kΩ
20kΩ
20kΩ
20kΩ
+
-
+
-
+
-
INA-
A2
A1
INA+
OUTA-
A3
R
G
R
G
G0
G1
+
-
+
-
OUTA+
REF
A4
VA-
VA+
20kΩ
20kΩ
20kΩ
20kΩ
9 GAIN
CONTROL
1MΩ
1MΩ
November 22, 2013
FN8364.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Copyright Intersil Americas LLC 2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
页面指南
