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ISL28156FHZ-T7 データシート(PDF) 9 Page - Intersil Corporation |
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ISL28156FHZ-T7 データシート(HTML) 9 Page - Intersil Corporation |
9 / 13 page 9 FN6154.5 December 16, 2008 Applications Information Introduction The ISL28156 is a single BiMOS rail-to-rail input, output (RRIO) operational amplifier with an enable feature. The ISL28256 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 39µA 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 bi-polar inputs, which have an input common mode range that extends up to 0.5V beyond the V+ rail, and to within 10mV of the V- rail. The CMOS outputs 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 ISL28156 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 ISL28156 parts can be connected together as a MUX. In this configuration, the outputs are tied together in parallel and a channel can be selected by the EN Pin Descriptions ISL28156 (6 Ld SOT-23) ISL28156 (8 Ld SOIC) ISL28256 (8 Ld MSOP) PIN NAME FUNCTION EQUIVALENT CIRCUIT 1, 5 NC Not connected 42 2 (A) 6 (B) IN- IN-_A IN-_B Inverting input Circuit 1 33 3 (A) 5 (B) IN+ IN+_A IN+_B Non-inverting input (See Circuit 1) 2 4 4 V- Negative supply 16 1 (A) 7 (B) OUT OUT_A OUT_B 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 ISL28156, ISL28256 |
同様の部品番号 - ISL28156FHZ-T7 |
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同様の説明 - ISL28156FHZ-T7 |
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