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BUF601AU Fiches technique(PDF) 4 Page - Burr-Brown (TI) |
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BUF601AU Fiches technique(HTML) 4 Page - Burr-Brown (TI) |
4 / 14 page 4 ® BUF600, 601 INPUT PROTECTION Static damage has been well recognized for MOSFET de- vices, but any semiconductor device deserves protection from this potentially damaging source. The BUF600 and BUF601 incorporate on-chip ESD protection diodes as shown in Figure 1. This eliminates the need for the user to add external protection diodes, which can add capacitance and degrade AC performance. FIGURE 1. Internal ESD Protection. +V CC –V CC External Pin Internal Circuitry ESD Protection Diodes internally connected to all pins. All input pins on the BUF600 and BUF601 are internally protected from ESD by means of a pair of back-to-back reverse-biased diodes to the power supplies as shown. These diodes will begin to conduct when the input voltage exceeds either power supply by about 0.7V. This situation can occur with loss of the amplifier’s power supplies while a signal source is still present. The diodes can typically withstand a continuous current of 30mA without destruction. To insure long term reliability, however, the diode current should be externally limited to 10mA or so whenever possible. The internal protection diodes are designed to withstand 2.5kV (using the Human Body Model) and will provide adequate ESD protection for most normal handling proce- dures. However, static damage can cause subtle changes in amplifier input characteristics without necessarily destroy- ing the device. In precision amplifiers, this may cause a noticeable degradation of offset and drift. Therefore, static protection is strongly recommended when handling the BUF600 and BUF601. TYPICAL PERFORMANCE CURVES At VCC = ±5V, RLOAD = 10kΩ, and TA = 25°C, unless otherwise noted. INPUT BIAS CURRENT vs TEMPERATURE –40 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Temperature (°C) –20 0 20406080 100 BUF600 BUF601 OFFSET VOLTAGE vs TEMPERATURE –40 5 4 3 2 1 0 –1 –2 –3 –4 –5 Temperature (°C) –20 0 20406080 100 BUF600 BUF601 INPUT IMPEDANCE vs FREQUENCY BUF601 100 10M 1M 100k 10k 1k Frequency (Hz) 1k 10k 100k 1M 10M 100M INPUT IMPEDANCE vs FREQUENCY BUF600 100 10M 1M 100k 10k 1k Frequency (Hz) 1k 10k 100k 1M 10M 100M |
Numéro de pièce similaire - BUF601AU |
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Description similaire - BUF601AU |
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