ISL28474 Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifier and Precision Operational Amplifier

ISL28474

Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifier and Precision Operational Amplifier

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	Technical Documentation		Tools And Support
	Pricing / Samples		Related Devices

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	ISL28474FAZ

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Datasheet
	ISL28474
	Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifier and Precision Operational Amplifier

# of Devices/ Channels

INA BW @ -3dB or GBWP (MHz)

OPA BW @ -3dB or GBWP (MHz)

INA Slew Rate (V/μs)

±0.5

OPA Slew Rate (V/μs)

±0.14

V_S (min) (V)

2.4

V_S (max) (V)

INA V_N (nV/√Hz)

OPA V_N (nV/√Hz)

Rail-to-Rail

RRIO

INA Gain A_V (min)

100

OPA Gain A_V (min)

I_S (mA)

.078

I_BIAS (μA)

.00003

I_OUT (mA)

INA V_OS (max) (mV)

OPA V_OS (max) (mV)

.225

INA Gain Error (%)

Enable

CMRR (dB)

100

PSRR (dB)

100

Product Information

Key Features

Combination of IN-AMP and OP-AMP in a Single Package
120μA Supply Current for ISL28274
Input Offset Voltage IN-AMP 500μV Max
Input Offset Voltage OP-AMP 225μV Max
30pA Max Input Bias Current
100dB CMRR and PSRR
Single Supply Operation of 2.4V to 5.0V
Ground Sensing
Input Voltage Range is Rail-to-Rail and Output Swings Rail-to-Rail
Pb-Free available (RoHS Compliant)

Description

The ISL28274 is a combination of a micropower instrumentation amplifier (Amp A) with a low power precision amplifier (Amp B) in a single package. The ISL28474 consists of two micropower instrumentation amplifiers (Amp A) and two low power precision amplifiers (Amp B) in a single package. The amplifiers are optimized for operation at 2.4V to 5V single supplies. Inputs and outputs can operate rail-to-rail. As with all instrumentation amplifiers, a pair of inputs provide a high common-mode rejection and are completely independent from a pair of feedback terminals. The feedback terminals allow zero input to be translated to any output offset, including ground. A feedback divider controls the overall gain of the amplifier. The additional precision amplifier can be used to generate higher gain, with smaller feedback resistors or used to generate a reference voltage.

The instrumentation amp (Amp A) is compensated for a gain of 100 or more and the precision amp (Amp B) is unity gain stable. Both amplifiers have PMOS inputs that provide less than 30pA input bias currents.

The amplifiers can be operated from one lithium cell or two Ni-Cd batteries. The amplifiers input range goes from below ground to slightly above positive rail. The output stage swings completely to ground or positive supply; no pull-up or pull-down resistors are needed.

Pricing / Packaging / Samples / Ordering

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Check distributor inventory	Available in RoHS/Pb-Free

	Part No.	Design-In Status	Temp.	Package	MSL	Price US $

	ISL28474EVAL1Z	Active		Eval Board	N/A	Contact Us

	ISL28474FAZ	Active	Full-Range	24 Ld QSOP	2	2.33

	ISL28474FAZ-T7	Active	Full-Range	24 Ld QSOP T+R	2	2.33

The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice.
MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020
SMD = Standard Microcircuit Drawing

Technical Documentation

Datasheet(s):
Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifier and Precision Operational Amplifier
Evaluation Board(s):
ISL28474EVAL1Z Evaluation Board User's Guide
Technical Homepage:
Amplifiers/Buffers

Tools And Support
iSim Design Simulation
No Models Available

Application Block Diagrams

Applications

4mA to 20mA Loops
Industrial Process Control
Medical Instrumentation

Related Devices

Parametric Table

	EL8170		Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifier
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	EL8172		Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifiers
	EL8173		Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifier
	ISL28270		Dual Channel Micro-power, Single Supply, Rail-to-Rail Input and Output (RRIO) Instrumentation Amplifier
	ISL28271		Dual Micropower, Single Supply, Rail-to-Rail Input and Output (RRIO) Instrumentation Amplifier
	ISL28272		Dual Micropower, Single Supply, Rail-to-Rail Input and Output (RRIO) Instrumentation Amplifier
	ISL28274		Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifier and Precision Operational Amplifier
	ISL28470		Quad Channel Micro-power, Single Supply, Rail-to-Rail Input and Output (RRIO) Instrumentation Amplifier