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DATASHEET
ISL28108, ISL28208, ISL28408
40V Precision Single Supply Rail-to-Rail Output Low Power Operational Amplifiers
FN6935 Rev.5.01 Feb 6, 2020
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 across 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 (VS = ±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
For a full list of related documents, visit our website:
• ISL28108, ISL28208, and ISL28408
LOAD
RIN-
RSENSE
10kΩ RIN+
10kΩ
VREF
RF
100kΩ
IN- -
V+
ISL28108
IN+
+
V-
+3V to 40V
VOUT
RREF+ 100kΩ
GAIN = 10
SINGLE-SUPPLY, LOW-SIDE CURRENT SENSE AMPLIFIER
FIGURE 1. TYPICAL APPLICATION CIRCUIT
VOS (µV)
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 INPUT COMMON MODE VOLTAGE (V)
15
FIGURE 2. INPUT OFFSET VOLTAGE vs INPUT COMMON MODE VOLTAGE, VS = ±15V
FN6935 Rev.5.01 Feb 6, 2020
Page 1 of 35
ISL28108, ISL28208, ISL28408
Table of Contents
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical Specifications, VS ±15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical Specifications, VS ±5V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Typical Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .