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NE5521 LVDT Signal ConditionerGeneral DescriptionThe NE/SA5521 is a signal conditioning circuit for use with Linear Variable Differential Transformers (LVDTs) and Rotary Variable Differential Transformers (RVDTs). The chip includes a low distortion, amplitude-stable sine wave oscillator with programmable frequency to drive the primary of the LVDT/RVDT, a synchronous demodulator to convert the LVDT/RVDT output amplitude and phase to position information, and an output amplifier to provide amplification and filtering of the demodulated signal.
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| Type Number | NE5521N | SA5521N |
| Package | SOT102-4 (DIP18) | SOT102-4 (DIP18) |
| Power Dissipation(mW) | 280 | 260 |
| Operating Temp. (Cel) | 0~70 | -40~85 |
| Supply Current (mA) | 12.9 | 12.9 |
| Part Type | LVDT Signal Conditioner | LVDT Signal Conditioner |
| Dual Voltage Supply | yes | yes |
| Oscillation Frequency (kHz) | 1~20 | 1~20 |
| Single Voltage Supply | yes | yes |
| Unity Gain Bandwidth (MHz) | 1.6 | 1.6 |
| Dual Supply Voltage Range (±VDC) |
2.5~10 | 2.5~10 |
| Gain (V/mV) | 385 | 385 |
| Input Offset Voltage (±mV) | 0.5 | 0.5 |
| Single Supply Voltage Range (VDC) | 5~20 | 5~20 |