Overview
The AD8275BRMZ, produced by Analog Devices Inc., is a precision difference amplifier designed for level translation and signal conditioning in various applications. This component is particularly useful in industrial and instrumentation settings where it is necessary to interface ±10 V signals to single-supply 4 V or 5 V analog-to-digital converters (ADCs). The AD8275BRMZ features a gain of 0.2, allowing it to translate ±10 V input signals to a +4 V output level, thereby simplifying the design process and reducing power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single/Dual) | ±1.65 | - | ±7.5 | V |
| Input Resistance | - | - | 108 kΩ | Ω |
| Gain | - | 0.2 | - | - |
| Small Signal Bandwidth (-3 dB) | - | 15 | - | MHz |
| Settling Time | - | 450 ns | - | ns |
| Common Mode Rejection Ratio (CMRR) | - | 80 | - | dB |
| Input Offset Voltage (Vos) | - | 150 μV | - | μV |
| Input Bias Current | - | 10 pA | - | pA |
| Package Type | - | 8-TSSOP, 8-MSOP | - | - |
Key Features
- Level Translation: Translates ±10 V input signals to a +4 V output level, making it suitable for single-supply ADCs.
- High CMRR: Offers a high common-mode rejection ratio of 80 dB, ensuring effective noise and interference rejection.
- Low Offset and Drift: Features low input offset voltage (150 μV) and low offset drift, enhancing accuracy in data acquisition applications.
- Fast Settling Time: Has a fast settling time of 450 ns, making it suitable for driving medium-speed successive approximation (SAR) ADCs.
- Single-Supply Operation: Reduces power consumption and protects the ADC from overdrive conditions.
- Precision Resistors: Internal, matched, precision laser-trimmed resistors ensure low gain error and high common-mode rejection.
Applications
- Industrial and Instrumentation: Ideal for applications where ±10 V signals need to be interfaced with single-supply ADCs.
- Data Acquisition Systems: Suitable for systems requiring accurate and quick signal capture.
- Analog Front End: Can be used as an analog front end or to follow buffers for level translation of high voltages.
Q & A
- What is the primary function of the AD8275BRMZ?
The AD8275BRMZ is a difference amplifier designed to translate ±10 V input signals to a +4 V output level, making it suitable for single-supply ADCs.
- What is the gain of the AD8275BRMZ?
The gain of the AD8275BRMZ is 0.2.
- What is the common-mode rejection ratio (CMRR) of the AD8275BRMZ?
The CMRR of the AD8275BRMZ is 80 dB.
- What is the settling time of the AD8275BRMZ?
The settling time of the AD8275BRMZ is 450 ns.
- What type of packages is the AD8275BRMZ available in?
The AD8275BRMZ is available in 8-TSSOP and 8-MSOP packages.
- What is the input offset voltage of the AD8275BRMZ?
The input offset voltage of the AD8275BRMZ is typically 150 μV.
- What is the input bias current of the AD8275BRMZ?
The input bias current of the AD8275BRMZ is typically 10 pA.
- What are the typical supply voltage ranges for the AD8275BRMZ?
The AD8275BRMZ can operate with supply voltages ranging from ±1.65 V to ±7.5 V.
- What is the small signal bandwidth of the AD8275BRMZ?
The small signal bandwidth of the AD8275BRMZ is typically 15 MHz.
- In what applications is the AD8275BRMZ commonly used?
The AD8275BRMZ is commonly used in industrial and instrumentation applications, data acquisition systems, and as an analog front end for level translation.
