INA121U
ActiveFET-INPUT, LOW POWER INSTRUMENTATION AMPLIFIER
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INA121U
ActiveFET-INPUT, LOW POWER INSTRUMENTATION AMPLIFIER
Technical Specifications
Parameters and characteristics for this part
| Specification | INA121U |
|---|---|
| -3db Bandwidth | 5 kHz |
| Amplifier Type | Instrumentation |
| Current - Input Bias | 4 pA |
| Current - Output / Channel | 14 mA |
| Current - Supply | 450 µA |
| Mounting Type | Surface Mount |
| Number of Circuits | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 8-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Slew Rate | 0.7 V/µs |
| Supplier Device Package | 8-SOIC |
| Voltage - Input Offset | 200 çV |
| Voltage - Supply Span (Max) [Max] | 36 V |
| Voltage - Supply Span (Min) [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 9.81 | |
| 10 | $ 8.86 | |||
| 75 | $ 8.45 | |||
| 150 | $ 7.33 | |||
| 300 | $ 7.00 | |||
| 525 | $ 6.39 | |||
| 1050 | $ 5.56 | |||
| Newark | Each | 1 | $ 11.80 | |
| 10 | $ 11.27 | |||
| 25 | $ 10.92 | |||
| 50 | $ 10.36 | |||
| 150 | $ 9.98 | |||
| 300 | $ 9.58 | |||
| 525 | $ 9.40 | |||
| Texas Instruments | TUBE | 1 | $ 7.50 | |
| 100 | $ 6.12 | |||
| 250 | $ 4.81 | |||
| 1000 | $ 4.08 | |||
Description
General part information
INA121 Series
The INA121 is a FET-input, low power instrumentation amplifier offering excellent accuracy. Its versatile three-op amp design and very small size make it ideal for a variety of general purpose applications. Low bias current (±4pA) allows use with high impedance sources.
Gain can be set from 1V to 10,000V/V with a single external resistor. Internal input protection can withstand up to ±40V without damage.
The INA121 is laser-trimmed for very low offset voltage (±200µV), low offset drift (±2µV/°C), and high common-mode rejection (106dB at G = 100). It operates on power supplies as low as ±2.25V (+4.5V), allowing use in battery operated and single 5V systems. Quiescent current is only 450µA.
