Inicio > Circuitos integrados IC > Circuitos integrados lineales analógicos > AD8226ARZ

AD8226ARZ

RRIO instrumentation amp, G=1-1000, 1.7nV/√Hz, 1.7-36V, SOIC-8

6340

Inventario efectivo

Ir a la consulta

Image for reference only

Pieza del fabricante：

AD8226ARZ

Paquete：

SOIC-8 (5.0 x 4.0 x 1.5mm)

Marca：

Categorías de productos：

Circuitos integrados lineales analógicos, Circuitos integrados IC

Otras recomendaciones que pueden interesarle.

SII9396SCNUC-BAR

IS43TR16256BL-125KBLI

Descripción

Productos

The AD8226ARZ is a wide supply range, rail-to-rail output instrumentation amplifier from Analog Devices with 0.15% max gain error, 1.2nA input bias current, and 1.7nV/√Hz voltage noise in an SOIC-8 package.

Especificaciones

Supply Voltage Range	1.7V to ±18V (single or dual)
Gain Range	1 to 1000 (single resistor set)
Gain Error (G=1)	0.02% typical
Gain Error (G=100)	0.15% max
Corriente de polarización de entrada	1.2nA typical
Tensión de offset de entrada	125µV typical
Voltage Noise (1kHz)	1.7nV/√Hz at G≥100
Common-Mode Rejection	80dB at G=1, 120dB at G≥100
Output Swing	Rail-to-rail (within 10mV of rails)
Bandwidth (G=1)	1.5 MHz
Velocidad de giro	1V/µs
Temperatura de funcionamiento	-40°C to +85°C
Paquete	SOIC-8

Características

Wide supply range: 1.7V to 36V (single supply) or ±18V (dual)
Rail-to-rail output swing maximizes dynamic range
Single resistor gain setting from 1 to 1000
Low voltage noise: 1.7nV/√Hz at G≥100
Excellent CMRR: 120dB at G≥100
Input protection to ±40V beyond supplies
Overvoltage protected inputs without latch-up
Compatible with AD620 pinout

Aplicaciones

Medical instrumentation and ECG
Industrial process control
Bridge transducer amplifiers
Data acquisition systems
Battery-powered instruments

Introducción del producto:AD8226ARZ Presentación del producto

The AD8226ARZ is a versatile instrumentation amplifier from Analog Devices that combines wide supply range (1.7V to 36V), rail-to-rail output, and excellent precision in an SOIC-8 package. The gain is set by a single external resistor from 1 to 1000, with gain error as low as 0.02% at G=1 and 0.15% at G=100. The input stage provides 1.2nA input bias current and 125µV offset voltage, while the low 1.7nV/√Hz voltage noise at gains of 100 or higher makes it ideal for precision measurement. CMRR reaches 120dB at gains ≥100, and the input protection circuitry can withstand ±40V beyond the supply rails without damage or latch-up.

Principio de funcionamiento:AD8226ARZ Principio de funcionamiento

The AD8226 uses a classic three-op-amp instrumentation amplifier architecture optimized for low noise and wide supply range. The input stage consists of two matched differential amplifiers that buffer and pre-amplify the input signal. The gain-setting resistor connects between the RG pins, controlling the transconductance of the input pair. At G=1, the input stage has unity gain; as the gain resistor value decreases, the input stage gain increases proportionally, simultaneously improving CMRR and reducing referred input noise. The output stage is a difference amplifier that converts the differential signal to single-ended with rail-to-rail output capability. The input protection network uses current-limiting resistors and clamp diodes that protect the inputs to ±40V beyond the supplies without causing latch-up or affecting accuracy during normal operation. The rail-to-rail output stage uses a complementary push-pull architecture that drives the output to within 10mV of either supply rail under light loads.

Descripción de la clavija:AD8226ARZ Definición y funciones de las clavijas

Pin	Nombre	Tipo	Descripción
1	-IN	Analog Input	Inverting input
2	RG	Gain	Gain resistor terminal 1
3	+V_S	Potencia	Positive supply
4	VOUT	Salida	Amplifier output
5	REF	Reference	Reference voltage input (typically GND)
6	-V_S	Potencia	Negative supply (or GND for single supply)
7	RG	Gain	Gain resistor terminal 2
8	+IN	Analog Input	Non-inverting input

Application Scenarios:In which products and applications isAD8226ARZ usado

Medical ECG: 120dB CMRR at G≥100 rejects 50/60Hz common-mode interference; 1.7nV/√Hz noise preserves signal integrity
Bridge Sensors: Single resistor gain setting simplifies strain gauge and load cell interfacing from 1 to 1000
Battery Instruments: 1.7V minimum supply voltage enables operation from single Li-ion or 2x AAA cells
Industrial Process Control: ±40V input protection survives fault conditions in harsh 4-20mA loop environments
Data Acquisition: Rail-to-rail output maximizes ADC dynamic range in single-supply systems

Alternative Models:What chips are recommended as replacements for AD8226ARZ

Modelo	Fabricante	Diferencia clave	Paquete	Specs
AD8227ARZ	ADI	Higher bandwidth (2.2MHz), lower noise	-	-
AD620ARZ	ADI	Industry standard, ±2.3V to ±18V, non-RR output	-	-
INA128UA	TI	1.3MHz, 10nV/√Hz, SOIC-8	-	-
INA821AIDR	TI	35nV/√Hz, 80V input, higher voltage range	-	-
MCP6N11-010E/SN	Microchip	Zero-drift, 1.8V minimum, MSOP-8	-	-