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OPA2376AID Datasheet(PDF) 10 Page - Burr-Brown (TI) |
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OPA2376AID Datasheet(HTML) 10 Page - Burr-Brown (TI) |
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10 / 23 page  www.ti.com APPLICATION INFORMATION OPERATING CHARACTERISTICS COMMON-MODE VOLTAGE RANGE GENERAL LAYOUT GUIDELINES BASIC AMPLIFIER CONFIGURATIONS - 0.5 3 2 1 0 - 1 - 2 - 3 Common-Mode(V) 6.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 + V - V INPUT AND ESD PROTECTION C 1 100nF R 2 10kW R 1 1kW +5V V OUT V IN V =2.5V CM OPA376 5kW OPA376 10mAmax V+ V IN V OUT I OVERLOAD OPA376 OPA2376 OPA4376 SBOS406B – JUNE 2007 – REVISED SEPTEMBER 2007 The OPA376 family of amplifiers has parameters that The input common-mode voltage range of the are fully specified from +2.2V to +5.5V. Many of the OPA376 series extends 100mV beyond the supply specifications apply from –40 °C to +125°C. rails. The offset voltage of the amplifier is very low, Parameters that can exhibit significant variance with from approximately (V–) to (V+) – 1V, as shown in regard to operating voltage or temperature are Figure 23. The offset voltage increases as presented in the Typical Characteristics. common-mode voltage exceeds (V+) –1V. Common-mode rejection is specified from (V–) to (V+) – 1.3V. For best operational performance of the device, good printed circuit board (PCB) layout practices are required. Low-loss, 0.1 μF bypass capacitors must be connected between each supply pin and ground as close to the device as possible. A single bypass capacitor from V+ to ground is applicable to single-supply applications. The OPA376 family is unity-gain stable. It does not exhibit output phase inversion when the input is overdriven. A typical single-supply connection is shown in Figure 22. The OPA376 is configured as a basic inverting amplifier with a gain of –10V/V. This single-supply connection has an output centered on the common-mode voltage, VCM. For the circuit Figure 23. Offset and Common-Mode Voltage shown, this voltage is 2.5V, but may be any value within the common-mode input voltage range. The OPA376 family incorporate internal electrostatic discharge (ESD) protection circuits on all pins. In the case of input and output pins, this protection primarily consists of current steering diodes connected between the input and power-supply pins. These ESD protection diodes also provide in-circuit, input overdrive protection, provided that the current is limited to 10mA as stated in the Absolute Maximum Ratings. Figure 24 shows how a series input resistor may be added to the driven input to limit the input current. The added resistor contributes thermal noise at the amplifier input and its value should be kept to a minimum in noise-sensitive applications. Figure 22. Basic Single-Supply Connection Figure 24. Input Current Protection 10 Submit Documentation Feedback Copyright © 2007, Texas Instruments Incorporated Product Folder Link(s): OPA376 OPA2376 OPA4376 |
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