The LMP7704-SP was subjected to a one-time characterization to determine the effects of Neutron Displacement Damage (NDD) to the device parameters. A sample size of twelve units was exposed to radiation testing per MIL-STD-883 (Method 1017 for Neutron Irradiation). The samples were dosed to exposure levels of 1 × 1012 n/cm2, 5 × 1012 n/cm2, and 1 × 1013 n/cm2, with three samples evaluated per exposure level. Electrical testing was performed at Texas Instruments before and after neutron irradiation using the production test program for the device. All tested parameters remained within the data sheet specified limits. Degradation of input offset voltage on some samples was observed and is discussed herein.
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The LMP7704-SP is a precision amplifier with low input bias, low offset voltage, 2.5MHz gain bandwidth, and a wide supply voltage. The device is radiation-hardened and operates in the military temperature range of −55°C to +125°C. The high dc precision of this amplifier, specifically the low offset voltage of ±60μV and ultra-low input bias of ±500fA, make this device an excellent choice for interfacing with precision sensors with high-output impedances. This amplifier can be configured for transducer, bridge, strain gauge, and trans-impedance amplification.
| TI Part Number | LMP7704-SP |
|---|---|
| Device Name | 5962R1920601VXC |
| SMD Number | 5962-19206 |
| Device Function | Radiation Hardness Assured (RHA), Precision, Low Input Bias, RRIO, Wide Supply Range Amplifiers |
| Technology | VIP050 |
| Device Package | 14-pin CFP (HBH) |
| Unbiased Quantity Tested | 12 |
| Exposure Facility | VPT Rad, Chelmsford, MA |
| Neutron Fluence (1-MeV Equivalent) | 1.0 × 1012, 5.0 × 1012, 1.0 × 1013 n/cm2 |
| Irradiation Temperature | 25°C |
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