Low power (350-µA), precision instrumentation amp with ±60-V overvoltage protection (gain pins 2, 3)
Product details
Parameters
Package | Pins | Size
Features
- Low offset voltage: 10 µV (typ), 35 µV (max)
- Gain drift: 5 ppm/°C (G = 1),
35 ppm/°C (G > 1) (max) - Noise: 8 nV/√Hz
- Bandwidth: 2 MHz (G = 1), 270 kHz (G = 100)
- Stable with 1-nF capacitive loads
- Inputs protected up to ±60 V
- Common-mode rejection: 110 dB, G = 10 (min)
- Power supply rejection: 110 dB, G = 1 (min)
- Supply current: 385 µA (max)
- Supply range:
- Single supply: 4.5 V to 36 V
- Dual supply: ±2.25 V to ±18 V
- Specified temperature range: –40°C to +125°C
- Packages: 8-pin SOIC, VSSOP, WSON
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Description
The INA819 is a high-precision instrumentation amplifier that offers 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 10,000. The device offers high precision as a result of super-beta input transistors, which provide exceptionally low input offset voltage, offset voltage drift, input bias current, input voltage, and current noise. Additional circuitry protects the inputs against overvoltage up to ±60 V.
The INA819 is optimized to provide a high common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 90 dB across the full input common-mode range. The device is designed for low-voltage operation from a 4.5-V single supply, as well as dual supplies up to ±18 V.
The INA819 is available in 8-pin SOIC, VSSOP, and WSON packages, and is specified over the –40°C to +125°C temperature range.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The INA826EVM is intended to provide basic functional evaluation of the INA826.
Features
- Intuitive evaluation with the silkscreen schematic
- Easy access to nodes with surface-mount test points
- Advanced evaluation with two prototype areas
- Reference voltage source flexibility
- Convenient input and output filtering
Description
Features
- Intuitive evaluation
- Easy access to nodes with suface-mount test points
- Reference voltage source flexibility
- Convenient input and output filtering
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Features
- Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Noise calculations
- Common unit translation
- Solves common amplifier circuit design problems
- Gain selections using standard resistors
- Filter configurations
- Total noise for common amplifier configurations
- (...)
The Common-Mode Input Range Calculator is pre-loaded (...)
Features
- Preloaded with 20 of TI’s most popular instrumentation amplifier specifications
- Customizable supply, gain, and voltage reference options
- Calculator displays output limitations graphically and numerically
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (D) | 8 | View options |
SON (DRG) | 8 | View options |
VSSOP (DGK) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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