INA826系列介绍资料

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INA826

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200μA 电源电流、36V 电源精密仪表放大器

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The INA826 is a cost-effective instrumentation amplifier that offers extremely low power consumption and operates over a very wide single-supply or dual-supply range. A single external resistor sets any gain from 1 to 1000. The device offers excellent stability over temperature, even at G > 1, as a result of the low gain drift of only 35 ppm/°C (maximum).

The INA826 is optimized to provide excellent common-mode rejection ratio of over 100 dB (G = 10) over frequencies up to 5 kHz. At G = 1, the common-mode rejection ratio exceeds 84 dB across the full input common-mode range, from the negative supply all the way up to 1 V of the positive supply. Using a rail-to-rail output, the INA826 is a great choice for low-voltage operation from a 3-V single supply, as well as dual supplies up to ±18 V.

Additional circuitry protects the inputs against overvoltage of up to ±40 V beyond the power supplies by limiting the input currents to less than 8 mA.

The INA826 is available in 8-pin SOIC, VSSOP, and tiny 3-mm × 3-mm WSON surface-mount packages. All versions are specified for the –40°C to +125°C temperature range.

Input common-mode range: Includes V–
Common-mode rejection:
- 104 dB, min (G = 10)
- 100 dB, min at 5 kHz (G = 10)
Power-supply rejection: 100 dB, min (G = 1)
Low offset voltage: 150 µV, max
Gain drift: 1 ppm/°C (G = 1), 35 ppm/°C (G > 1)
Noise: 18 nV/√Hz, G ≥ 100
Bandwidth: 1 MHz (G = 1), 60 kHz (G = 100)
Inputs protected up to ±40 V
Rail-to-rail output
Supply current: 200 µA
Supply range:
- Single supply: 3 V to 36 V
- Dual supply: ±1.5 V to ±18 V
Specified temperature range:
–40°C to +125°C
Packages: 8-pin VSSOP, SOIC, and WSON

Number of channels	1
Vs (max) (V)	36
Vs (min) (V)	3
Input offset (±) (max) (µV)	150
Voltage gain (min) (V/V)	1
Voltage gain (max) (V/V)	1000
Noise at 1 kHz (typ) (nV√Hz)	18
Features	Cost Optimized, Overvoltage protection, Small Size
CMRR (min) (dB)	120
Input offset drift (±) (max) (V/°C)	0.000002
Input bias current (±) (max) (nA)	65
Iq (typ) (mA)	0.2
Bandwidth at min gain (typ) (MHz)	1
Gain error (±) (max) (%)	0.15
Operating temperature range (°C)	-40 to 125
Rating	Catalog
Type	Resistor
Gain nonlinearity (±) (max) (%)	0.002
Output swing headroom (to negative supply) (typ) (V)	0.1
Output swing headroom (to positive supply) (typ) (V)	-0.15
Input common mode headroom (to negative supply) (typ) (V)	0
Input common mode headroom (to positive supply) (typ) (V)	-1
Noise at 0.1 Hz to 10 Hz (typ) (µVPP)	0.52

SOIC (D)	8	29.4 mm² 4.9 x 6
VSSOP (DGK)	8	14.7 mm² 3 x 4.9
WSON (DRG)	8	9 mm² 3 x 3

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INA826

200μA 电源电流、36V 电源精密仪表放大器

4000-306-326