ISL28533 Datasheet, PDF (1/30 Pages) Intersil Corporation – 5V, Rail-Rail I/O, Zero-Drift, Programmable Gain Instrumentation Amplifiers

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
• “ISLRE-BDGSTKEV1Z DAQ on a Stick User’s Guide” AN1853
• “ISL28533-633EV2Z User’s Guide” AN1880
INA-
VA-
VA+
+
A1
-
R_G
R_G
20kΩ
20kΩ
-
A3
+
OUTA
INA+
G0
G1
-
A2
+
20kΩ 20kΩ
REF
9 GAIN
CONTROL
OUT
IN-
-
A4
+
IN+
FIGURE 1. ISL2853x SINGLE-ENDED OUTPUT
INA-
VA-
VA+
INA+
G0
G1
+
A1
-
R_G
20kΩ 20kΩ
-
A3
+
-
+
R_G
A4
-
A2
+
20kΩ 20kΩ
9 GAIN
CONTROL
OUTA-
1MΩ
REF
1MΩ
OUTA+
FIGURE 2. ISL2863x DIFFERENTIAL OUTPUT
September 24, 2013
1
FN8364.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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