Overview
The AD8278BRMZ-R7, produced by Analog Devices Inc., is a general-purpose difference amplifier designed for precision signal conditioning in power-critical applications. This component is part of the AD8278 and AD8279 series, which are known for their high performance and low power consumption. The AD8278BRMZ-R7 is particularly suited for applications requiring high common-mode rejection ratio (CMRR) and wide bandwidth.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) |
| Number of Pins | 8 |
| Slew Rate | 1.4 V/μs |
| Input Offset Voltage (Vos) | 100 μV |
| Common Mode Rejection Ratio (CMRR) | 80 dB |
| Supply Voltage | 2 V to 36 V (single supply), ±2 V to ±18 V (dual supplies) |
| Operating Supply Current | 200 μA (typical at TA = −40°C to +85°C) |
| Operating Temperature Range | −40°C to +125°C |
| Output Type | Rail-to-Rail |
| Short-Circuit Current Limit | ±15 mA |
| Capacitive Load Drive | 200 pF |
Key Features
- High common-mode rejection ratio (CMRR) of 80 dB.
- Low offset voltage drift: ±1 μV/°C maximum.
- Low gain drift: 1 ppm/°C maximum.
- Enhanced slew rate: 1.4 V/μs.
- Wide power supply range: 2 V to 36 V (single supply), ±2 V to ±18 V (dual supplies).
- Laser-trimmed on-chip resistors for excellent gain accuracy.
- Rail-to-rail output.
- Low power consumption with a typical supply current of 200 μA.
Applications
- Voltage measurement and monitoring.
- Current measurement and monitoring.
- Instrumentation amplifier building block.
- Portable, battery-powered equipment.
- Test and measurement equipment.
Q & A
- What is the primary function of the AD8278BRMZ-R7?
The AD8278BRMZ-R7 is a general-purpose difference amplifier used for precision signal conditioning.
- What is the common-mode rejection ratio (CMRR) of the AD8278BRMZ-R7?
The CMRR is 80 dB.
- What is the slew rate of the AD8278BRMZ-R7?
The slew rate is 1.4 V/μs.
- What are the typical operating supply currents for the AD8278BRMZ-R7?
The typical operating supply current is 200 μA.
- What are the package options for the AD8278BRMZ-R7?
The component is available in 8-TSSOP and 8-MSOP packages.
- What is the operating temperature range of the AD8278BRMZ-R7?
The operating temperature range is −40°C to +125°C.
- What are some common applications of the AD8278BRMZ-R7?
Common applications include voltage and current measurement, instrumentation amplifier building blocks, and test and measurement equipment.
- What is the input offset voltage (Vos) of the AD8278BRMZ-R7?
The input offset voltage is 100 μV.
- Can the AD8278BRMZ-R7 operate with a single supply or dual supplies?
Yes, it can operate with a single supply (2 V to 36 V) or dual supplies (±2 V to ±18 V).
- What is the short-circuit current limit of the AD8278BRMZ-R7?
The short-circuit current limit is ±15 mA.
