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ISL28233MSOPEVAL2Z データシート(PDF) 1 Page - Intersil Corporation |
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ISL28233MSOPEVAL2Z データシート(HTML) 1 Page - Intersil Corporation |
1 / 4 page 1 Application Note 1569 ISL28233MSOPEVAL2Z Evaluation Board User’s Guide Introduction The ISL28233MSOPEVAL2Z Evaluation Board is designed to evaluate the performance of the ISL28233 Chopper Stabilized op amp. The evaluation board contains the circuitry needed to evaluate the high performance of the ISL28233 amplifier. The ISL28233 chopper stabilized rail-to-rail dual op amp features a low 8µV maximum VOS over-temperature and a 0.1Hz 1/f noise corner frequency enabling very high gain single-stage DC amplifiers that can operate from single cell batteries while consuming only 20µA of current. The ISL28233MSOPEVAL2Z evaluation board can be configured as a precision high-gain (G = 10,000V/V) differential amplifier and demonstrates the level of performance possible with this type of amplifier while operating from battery voltages as low as 1.65V. Reference Documents • ISL28233 Data Sheet, FN7692 Evaluation Board Key Features • Single Supply Operation: +1.65V to +5.5V • Dual Supply Operation: ±0.825V to ±2.75V • Singled-Ended or Differential Input Operation with High Gain (G = 10,000V/V) •External VREF Input • Banana Jack Connectors for Power Supply and VREF Inputs • BNC Connectors for Op Amp Input and Output Terminals • Convenient PCB Pads for Op Amp Input/Output Impedance Loading. Power Supplies (Figure 2) External power connections are made through the V+, V-, VREF, and GND connections on the evaluation board. The circuit can operate from a single supply or from dual supplies. For single supply operation, the V- and GND pins are tied together to the negative or ground reference of the power supply. For split supplies, V+ and V- terminals connect to their respective supply terminals. De-coupling capacitors C2 and C4 provide low-frequency power-supply filtering, while additional capacitors, C3 and C5, which are connected close to the part, filter out high frequency noise. Anti-reverse diode D1 (optional) protects the circuit in the momentary case of accidentally reversing the power supplies to the evaluation board. The VREF pin can be connected to ground to establish a ground referenced input for split supply operation, or can be externally set to any reference level for single supply operation. FIGURE 1. BASIC DIFFERENTIAL AMPLIFIER CONFIGURATION VREF IN - IN + GND 1MΩ OPEN OUT ISL28233 V- 0Ω VCM IN- IN+ VREF V+ 100Ω 100Ω - + 100kΩ OPEN R13/R23 R11/R24 R14/R21 R18/R19 R26/R27 1/7 R28/R29 INA- INA+ INB- INB+ 6 5 2 3 8 4 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2010. All Rights Reserved All other trademarks mentioned are the property of their respective owners. October 5, 2010 AN1569.1 |
同様の部品番号 - ISL28233MSOPEVAL2Z |
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同様の説明 - ISL28233MSOPEVAL2Z |
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