INA827 Texas instruments

INA827

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INA827

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Описание

The INA827 is a low-cost instrumentation amplifier (INA) that offers extremely low power consumption and operates over a very wide single- or dual-supply range. The device is optimized for the lowest possible gain drift of only 1 ppm per degree Celsius in G = 5, which requires no external resistor. However, a single external resistor sets any gain from 5 to 1000.The INA827 is optimized to provide excellent common-mode rejection ratio (CMRR) of over 88 dB (G = 5) over frequencies up to 5 kHz. In G = 5, CMRR exceeds 88 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 INA827 is well-suited for low-voltage operation from a 3-V singlesupply 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 a save level.The INA827 is available in a small VSSOP-8 package and is specified for the –40°C to +125°C temperature range. For a similar instrumentation amplifier with a gain range of 1 V/V to 1000 V/V, see the INA826.

Eliminates Errors from External Resistors at Gain of 5
Common-Mode Range Goes Below
Negative Supply
Input Protection: Up to ±40 V
Rail-to-Rail Output
Outstanding Precision:
- Common-Mode Rejection: 88 dB, minimum
- Low Offset Voltage: 150 µV, maximum
- Low Drift: 2.5 µV/°C, maximum
- Low Gain Drift: 1 ppm/°C, max (G = 5 V/V)
- Power-Supply Rejection:
  100 dB, min (G = 5)
- Noise: 17 nV/√Hz, G = 1000 V/V
High Bandwidth:
- G = 5: 600 kHz
- G = 100: 150 kHz
Supply Current: 200 µA, typical
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
Package: 8-pin VSSOP

Number of channels	1
Vs (max) (V)	36
Vs (min) (V)	3
Input offset (±) (max) (µV)	150
Voltage gain (min) (V/V)	5
Voltage gain (max) (V/V)	1000
Noise at 1 kHz (typ) (nV√Hz)	17
Features	Cost Optimized
CMRR (min) (dB)	110
Input offset drift (±) (max) (V/°C)	0.0000025
Input bias current (±) (max) (nA)	50
Iq (typ) (mA)	0.2
Bandwidth at min gain (typ) (MHz)	0.6
Gain error (±) (max) (%)	0.4
Operating temperature range (°C)	-40 to 125
Rating	Catalog
Type	Resistor
Gain nonlinearity (±) (max) (%)	0.005
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)	-0.2
Input common mode headroom (to positive supply) (typ) (V)	-0.9
Noise at 0.1 Hz to 10 Hz (typ) (µVPP)	0.5