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ISL28266 Scheda tecnica(PDF) 9 Page - Intersil Corporation |
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ISL28266 Scheda tecnica(HTML) 9 Page - Intersil Corporation |
9 / 12 page 9 FN6155.2 February 27, 2007 Applications Information Introduction The ISL28166 is a single BiMOS rail-to-rail input, output (RRIO) operational amplifier with an enable feature. The ISL28266 is a dual version without the enable feature. Both devices are designed to operate from single supply (2.4V to 5.0V) or dual supplies (±1.2V to ±2.5V) while drawing only 39 μA of supply current per amplifier. This combination of low power and precision performance makes this device suitable for a variety of low power applications including battery powered systems. Rail-to-Rail Input/Output These devices feature bipolar inputs which have an input common mode range that extends to the rails, and CMOS outputs that can typically swing to within about 4mV of the supply rails with a 100k Ω load. The NMOS sinks current to swing the output in the negative direction. The PMOS sources current to swing the output in the positive direction. Input Protection All input terminals have internal ESD protection diodes to both positive and negative supply rails, limiting the input voltage to within one diode beyond the supply rails. They also contain back-to-back diodes across the input terminals. For applications where the input differential voltage is expected to exceed 0.5V, external series resistors must be used to ensure the input currents never exceed 5mA (Figure 35). Enable/Disable Feature The ISL28166 offers an EN pin that disables the device when pulled up to at least 2.0V. In the disabled state (output in a high impedance state), the part consumes typically 10µA. By disabling the part, multiple ISL28166 parts can be connected together as a MUX. In this configuration, the outputs are tied together in parallel and a channel can be Pin Descriptions ISL28166 (6 Ld SOT-23) ISL28166 (8 Ld SO) ISL28266 (8 Ld SO) (8 Ld MSOP) PIN NAME FUNCTION EQUIVALENT CIRCUIT 1, 5 NC Not connected 42 2 (A) 6 (B) IN- Inverting input Circuit 1 33 3 (A) 5 (B) IN+ Non-inverting input (See circuit 1) 2 4 4 V- Negative supply 16 1 (A) 7 (B) OUT Output Circuit 2 6 7 8 V+ Positive supply 5 8 ENABLE Chip enable Circuit 3 IN- V+ V- IN+ V+ V- OUT V+ V- CE FIGURE 35. INPUT CURRENT LIMITING - + RIN RL VIN VOUT ISL28166, ISL28266 |
Codice articolo simile - ISL28266 |
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Descrizione simile - ISL28266 |
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