Overview
The AD8275ARMZ, produced by Analog Devices Inc., is a G = 0.2 difference amplifier designed to translate ±10 V signals to a +4 V level. This component is particularly useful in industrial and instrumentation applications where single-supply ADCs need to interface with bipolar input signals. The AD8275 features a fast settling time of 450 ns, low distortion, and high common-mode rejection ratio (CMRR) of 80 dB, making it suitable for driving medium-speed successive approximation (SAR) ADCs. Its rail-to-rail outputs and single-supply operation reduce power consumption and protect the ADC from overdrive conditions.
Key Specifications
| Parameter | Value |
|---|---|
| Gain (G) | 0.2 |
| Input Voltage Range | ±10 V |
| Output Voltage Range | 0 to 4 V |
| Supply Voltage (Single/Dual) | 3.3 V to 15 V |
| Settling Time | 450 ns |
| Common-Mode Rejection Ratio (CMRR) | 80 dB |
| Input Offset Voltage | 300 µV |
| Slew Rate | 25 V/µs |
| Operating Temperature | -40°C to 85°C |
| Package Type | 8-MSOP, 8-TSSOP |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
| Supply Current | 1.9 mA |
| Output Current per Channel | 30 mA |
| -3 dB Bandwidth | 15 MHz |
Key Features
- Level Translation: Translates ±10 V signals to a +4 V level, making it ideal for interfacing bipolar signals to single-supply ADCs.
- Fast Settling Time: 450 ns settling time, suitable for driving medium-speed SAR ADCs.
- Low Distortion: High slew rate and low distortion, ensuring consistent bandwidth and high accuracy.
- High CMRR: 80 dB common-mode rejection ratio, ensuring high signal integrity.
- Rail-to-Rail Outputs: Outputs can swing from rail to rail, enhancing the dynamic range of the system.
- Single-Supply Operation: Reduces power consumption and protects the ADC from overdrive conditions.
- Precision Resistors: Internal, matched, precision laser-trimmed resistors for low gain error and drift.
Applications
- Industrial and Instrumentation: Ideal for applications requiring the translation of bipolar signals to single-supply ADCs.
- Data Acquisition Systems: Suitable for systems that require accurate and quick capture of signals.
- Analog Front Ends: Can be used as an analog front end or to follow buffers for level translation.
- Medium-Speed SAR ADC Drivers: Optimized for driving medium-speed successive approximation ADCs.
Q & A
- What is the primary function of the AD8275ARMZ?
The AD8275ARMZ is a difference amplifier designed to translate ±10 V signals to a +4 V level, making it suitable for interfacing bipolar signals to single-supply ADCs.
- What is the settling time of the AD8275ARMZ?
The settling time of the AD8275ARMZ is 450 ns.
- What is the common-mode rejection ratio (CMRR) of the AD8275ARMZ?
The CMRR of the AD8275ARMZ is 80 dB.
- What is the input offset voltage of the AD8275ARMZ?
The input offset voltage of the AD8275ARMZ is 300 µV.
- What is the slew rate of the AD8275ARMZ?
The slew rate of the AD8275ARMZ is 25 V/µs.
- What are the operating temperature ranges for the AD8275ARMZ?
The operating temperature range for the AD8275ARMZ is -40°C to 85°C.
- What package types are available for the AD8275ARMZ?
The AD8275ARMZ is available in 8-MSOP and 8-TSSOP packages.
- Is the AD8275ARMZ lead-free and RoHS compliant?
Yes, the AD8275ARMZ is lead-free and RoHS compliant.
- What is the supply current of the AD8275ARMZ?
The supply current of the AD8275ARMZ is 1.9 mA.
- What is the output current per channel of the AD8275ARMZ?
The output current per channel of the AD8275ARMZ is 30 mA.
