ISL28408_14 Datasheet, PDF (1/34 Pages) Intersil Corporation – 40V Precision Single Supply Rail-to-Rail Output Low Power Operational Amplifiers

40V Precision Single Supply Rail-to-Rail Output Low
Power Operational Amplifiers
ISL28108, ISL28208, ISL28408
The ISL28108, ISL28208 and ISL28408 are single, dual and
quad low power precision amplifiers optimized for single
supply applications. These devices feature a common mode
input voltage range extending to 0.5V below the V- rail, a
rail-to-rail differential input voltage range for use as a
comparator, and rail-to-rail output voltage swing, which make
them ideal for single supply applications where input
operation at ground is important.
Added features include low offset voltage, and low
temperature drift making them the ideal choice for
applications requiring high DC accuracy. The output stage is
capable of driving large capacitive loads from rail-to-rail for
excellent ADC driving performance. The devices can operate
for single or dual supply from 3V (±1.5V) to 40V (±20V) and are
fully characterized at ±5V and ±15V. The combination of
precision, low power, and small footprint provide the user with
outstanding value and flexibility relative to similar competitive
parts.
Applications for these amplifiers include precision
instrumentation, data acquisition, precision power supply
control, and industrial control.
The ISL28108 single is offered in 8 Ld TDFN, MSOP and SOIC
packages. The ISL28208 dual amplifier is offered in 8 Ld
TDFN, MSOP, and SOIC packages. The ISL28408 is offered in
14 Ld SOIC package. All devices are offered in standard pin
configurations and operate over the extended temperature
range of -40°C to +125°C.
Features
• Single or dual supply, rail-to-rail output and below ground (V-)
input capability
• Rail-to-rail input differential voltage range for comparator
applications
• Single supply range . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 40V
• Low current consumption (V_S = ±5V). . . . . . . . . . . . . . . 165µA
• Low noise voltage. . . . . . . . . . . . . . . . . . . . . . . . . . 15.8nV/√Hz
• Low noise current. . . . . . . . . . . . . . . . . . . . . . . . . . . . 80fA/√Hz
• Low input offset voltage (ISL28108) . . . . . . . . . . . . . . 150µV
• Superb temperature drift
- Voltage offset TC . . . . . . . . . . . . . . . . . . . . . . 0.1µV/°C, Typ
• Low input bias current . . . . . . . . . . . . . . . . . . . . . . . . -13nA Typ
• Operating temperature range. . . . . . . . . . . .-40°C to +125°C
• No phase reversal
Applications
• Precision instruments
• Medical instrumentation
• Data acquisition
• Power supply control
• Industrial process control
Related Literature
• AN1658, “ISL28208SOICEVAL2Z Evaluation Board User
Guide”
LOAD
R_IN-
R_SENSE
10kΩ
R_IN+
10kΩ
V_REF
R_F
100kΩ
IN- _-
V+
ISL28108
IN+
V-
+
+3V
to 40V
V_OUT
R_REF+
100kΩ
GAIN = 10
SINGLE-SUPPLY, LOW-SIDE
CURRENT SENSE AMPLIFIER
FIGURE 1. TYPICAL APPLICATION CIRCUIT
500
400 ^{VS = ±15V}
300
+125°C
200
+25°C
-40°C
100
0
-100
-200
-300
-400
-500
-16 -15.5 -15 -14.5 -14 13 13.5 14 14.5 15
INPUT COMMON MODE VOLTAGE (V)
FIGURE 2. INPUT OFFSET VOLTAGE vs INPUT COMMON MODE
VOLTAGE, V_S = ±15V
March 4, 2014
FN6935.5
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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