Datasheet LTC1250 (Analog Devices) - 8

LTC1250
O U U W U APPLICATI S I FOR ATIO Single Supply Operation
ally severe fault conditions can destroy the part. All pins The LTC1250 will operate with single supply voltages as are protected against faults of ±25mA or 5V beyond low as 4.5V, and the output swings to within millivolts of either supply, whichever comes first. If the external either supply when lightly loaded. The input stage will circuitry can exceed these limits, series resistors or common mode to within 250mV of ground with a single voltage clamp diodes should be included to prevent 5V supply, and will common mode to ground with single damage. supplies above 11V. Most bridge transducers bias their The LTC1250 includes internal protection against ESD inputs above ground when powered from single supplies, damage. All data sheet parameters are maintained to 1kV allowing them to interface directly to the LTC1250 in ESD on any pin; beyond 1kV, the input bias and offset single supply applications. Single-ended, ground-refer- currents will increase, but the remaining specs are unaf- enced signals will need to be level shifted slightly to fected and the part remains functional to 5kV at the input interface to the LTC1250’s inputs. pins and 8kV at the output pin. Extreme ESD conditions should be guarded against by using standard antistatic
Fault Conditions
precautions. The LTC1250 is designed to withstand most external fault conditions without latch-up or damage. However, unusu- 1250fb 8