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Descripción de producto
The AD8275 is a G=0.2 difference amplifier that can be used to translate +/-10V signals to a +4V level. It solves the problem typically encountered in industrial and instrumentation where +/-10V signals must be interfaced to a single supply 4V or 5V ADC. The AD8275 interfaces the two signal levels, simplifying design. The AD8275 has fast settling time of 450 ns and low distortion, making it suitable for driving medium speed successive approximation (SAR) ADCs. Its wide input voltage range and rail-torail outputs make it an easy to use building block. Single-supply operation reduces the power consumption of the amplifier and helps to protect the ADC from overdrive conditions. Internal, matched, precision laser-trimmed resistors ensure low gain error, low gain drift of 1 ppm/°C (maximum), and high common-mode rejection of 80 dB. Low offset and low offset drift, combined with its fast settling time, make the AD8275 suitable for a variety of data acquisition applications where accurate and quick capture is required. The AD8275 can be used as an analog front end, or it can follow buffers to level translate high voltages to a voltage range accepted by the ADC. In addition, the AD8275 can be configured for differential outputs if used with a differential ADC. The AD8275 is available in a space-saving, 8-lead MSOP and is specified for performance over the ?40°C to +85°C temperature range. Applications Level Translator ADC Driver Instrumentation Amplifier Building Block Automated test equipment
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Translates +4 V Drives 16-bit SAR ADCs Small MSOP package Input overvoltage: -35 V (VS 5 V) Fast settling time: to 0.001% Rail-to-rail output Wide supply operation: +15 V High CMRR: 80 dB Low gain drift: 1 ppm/°C Low offset drift: 2.5 V/°C
APPLICATIONSThe = 0.2 difference amplifier that can be used to translate ±10 V signals +4 V level. It solves the problem typically encountered in industrial and instrumentation applications where ±10 V signals must be interfaced to a single-supply 5 V ADC. The AD8275 interfaces the two signal levels, simplifying design. The AD8275 has fast settling time 450 ns and low distortion, making it suitable for driving medium speed successive approximation (SAR) ADCs. Its wide input voltage range and rail-torail outputs make it an easy to use building block. Single-supply operation reduces the power consumption of the amplifier and helps to protect the ADC from overdrive conditions. Internal, matched, precision laser-trimmed resistors ensure low gain error, low gain drift of 1 ppm/°C (maximum), and high common-mode rejection of 80 dB. Low offset and low offset drift, combined with its fast settling time, make the AD8275 suitable for a variety of data acquisition applications where accurate and quick capture is required.
The AD8275 can be used as an analog front end, or it can follow buffers to level translate high voltages to a voltage range accepted by the ADC. In addition, the AD8275 can be configured for differential outputs if used with a differential ADC.
The AD8275 is available in a space-saving, 8-lead MSOP and is specified for performance over the to +85°C temperature range.
Information furnished by Analog Devices is believed to be accurate and reliable. However, noresponsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.Maximum Power Dissipation : 4 ESD Caution : 4 Pin Configuration and Function Descriptions : 5 Typical Performance Characteristics : 6 Theory of Operation : 11 Basic Connection : 11 Power Supplies : 12
Reference : 12 Common-Mode Input Voltage Range : 12 Input Protection : 12 Configurations : 13 Applications Information : 14 Driving a Single-Ended ADC : 14 Differential Outputs : 14 Increasing Input Impedance 15 AC Coupling : 15 Using the as a Level Translator in a Data Acquisition System : 15 Outline Dimensions : 16 Ordering Guide : 16
SPECIFICATIONS0.2, REF1 connected to GND and REF2 connected 2 k connected = 25°C, unless otherwise noted. Specifications referred to output unless otherwise noted.
Small Signal Bandwidth Slew Rate Settling Time to 0.01% Settling Time to 0.001% Overload Recovery Time NOISE/DISTORTION1 THD + N
Voltage Noise Spectral Noise Density GAINvs. Temperature vs. Power Supply Reference Divider Accuracy Common-Mode Rejection Ratio3 INPUT CHARACTERISTICS Input Voltage Range4 Impedance5 Differential Common Mode OUTPUT CHARACTERISTICS Output Swing
Capacitive Load6 Short-Circuit Current Limit POWER SUPPLY Specified Voltage Range Operating Voltage Range Supply Current
= 1 kHz, VOUT 4 V p-p, 22 kHz band pass filter to 10 Hz, referred to output = 1 kHz, referred to output
Referred to output, ±2.5 V, reference and input pins grounded1 Includes amplifier voltage and current noise, as well as noise of internal resistors. 2 Includes input bias and offset current errors. 3 See Figure 7 for CMRR vs. temperature. 4 The input voltage range is a function of the voltage supplies, reference voltage, and ESD diodes. When operating on other supply voltages, see the Absolute Maximum
Ratings section, Figure 11, and Table 5 for more information. 5 Internal resistors are trimmed to be ratio matched but have ±20% absolute accuracy. 6 See Figure 25 to Figure 28 in the Typical Performance Characteristics section for more information.
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Barbara Anderson
Length of registration:7 years
I recently ordered an IC AD8275ARMZ from your company and I am very pleased with the product. The IC is a high-performance, low-power, low-noise, low-distortion, wide-bandwidth, and low-cost amplifier. It has excellent performance in terms of gain, noise, and distortion, and is ideal for use in a variety of applications. The IC also has a wide operating temperature range and is easy to use. I am v
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AD8275ARMZ
AD8275ARMZ tiene varias marcas en todo el mundo que pueden tener nombres alternativos para AD8275ARMZ debido a diferencias o adquisiciones regionales. AD8275ARMZ también se conoce con los siguientes nombres:
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