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INA157UAG4 Datasheet(PDF) 8 Page - Texas Instruments |
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INA157UAG4 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 12 page 8 ® INA157 The INA157 can be combined with op amps to form a complete instru- mentation amplifier with specialized performance characteristics. Burr- Brown offers many complete high performance IAs. Products with related performances are shown at the right. SIMILIAR COMPLETE A1, A2 FEATURE BURR-BROWN IAs OPA227 Low Noise INA103 OPA129 Ultra Low Bias Current (fA) INA116 OPA277 Low Offset Drift, Low Noise INA114, INA128 OPA2134 FET Input (pA) INA111, INA121 FIGURE 6. Boosting Output Current. FIGURE 5. Precision Instrumentation Amplifier. FIGURE 4. Precision Summing Amplifier. V 1 V 2 5 6 1 3 V 0 = 2V1 + V2 INA157 2 6k Ω 6k Ω 12k Ω 12k Ω 5 6 1 3 INA157 2 V 1 V O A 2 A 1 R 2 R 2 R 1 –In V 2 +In V O = (1 + 2R2/R1) (V2 –V1) 5 6 1 INA157 BUF634 2 3 V O R L –In +In (Low I Q mode) BUF634 inside feedback loop contributes no error. The difference amplifier is a highly versatile building block that is useful in a wide variety of applications. See the INA105 data sheet for additional applications ideas, including: • Current Receiver with Compliance to Rails • ±10V Precision Voltage Reference • ±5V Precision Voltage Reference • Precision Average Value Amplifier • Precision Bipolar Offsetting • Precision Summing Amplifier with Gain • Instrumentation Amplifier Guard Drive Generator • Precision Summing Instrumentation Amplifier • Precision Absolute Value Buffer • Precision Voltage-to-Current Converter with Differential Inputs • Differential Input Voltage-to-Current Converter for Low IOUT • Isolating Current Source • Differential Output Difference Amplifier • Isolating Current Source with Buffering Amplifier for Greater Accuracy • Window Comparator with Window Span and Window Center Inputs • Precision Voltage-Controlled Current Source with Buff- ered Differential Inputs and Gain • Digitally Controlled Gain of ±1 Amplifier |
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