Product Descriptions
The INA118 is a low-power, general-purpose instrumentation amplifier offering excellent accuracy. The versatile, three op amp design and small size make this device an excellent choice for a wide range of applications. Current-feedback input circuitry provides wide bandwidth, even at high gain (70 kHz at G = 100).
A single external resistor sets any gain from 1 to 10000. Internal input protection can withstand up to ±40 V without damage.
The INA118 is laser-trimmed for low offset voltage (50 μV), drift (0.5 μV/°C), and high common-mode rejection (110 dB at G = 1000). The INA118 operates with power supplies as low as ±2.25 V, and quiescent current is only 350 μA, making this device an excellent choice for battery-operated systems.
The INA118 is available in 8-pin plastic DIP and SO-8 surface-mount packages, and specified for the –40°C to +85°C temperature range.
The upgraded INA818 offers a lower input stage offset voltage (35 μV, maximum), lower input bias current (0.5 nA maximum) and lower noise (8 nV/√Hz) at the same quiescent current. See the Device Comparison Table for a selection of precision instrumentation amplifiers from Texas Instruments.
Product Features
? A newer version of this device is now available:
INA818
? Low offset voltage: 50 μV, maximum
? Low drift: 0.5 μV/°C, maximum
? Low input bias current: 5 nA, maximum
? High CMR: 110 dB, minimum
? Inputs protected to ±40 V
? Wide supply range: ±2.25 to ±18 V
? Low quiescent current: 350 μA
? Packages: 8-Pin plastic DIP, SO-8
Product Applications
? Pressure transmitter
? Temperature transmitter
? Weigh scale
? Electrocardiogram (ECG)
? Analog input module
? Data acquisition (DAQ)
Specifications
| Part# | INA118U2K5 |
| Category | Integrated Circuits (ICs) |
| Linear | |
| Amplifiers | |
| Instrumentation, OP Amps, Buffer Amps | |
| Mfr | Texas Instruments |
| Series | - |
| Package | Tape & Reel (TR) |
| Cut Tape (CT) | |
| Digi-Reel? | |
| Product Status | Active |
| Amplifier Type | Instrumentation |
| Number of Circuits | 1 |
| Output Type | - |
| Slew Rate | 0.9V/μs |
| -3db Bandwidth | 800 kHz |
| Current - Input Bias | 1 nA |
| Voltage - Input Offset | 25 μV |
| Current - Supply | 350μA |
| Current - Output / Channel | 12 mA |
| Voltage - Supply Span (Min) | 2.7 V |
| Voltage - Supply Span (Max) | 36 V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Base Product Number | INA118 |
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