Overview
The AD8028AR, produced by Analog Devices Inc., is a high-speed operational amplifier with rail-to-rail input and output. It is designed to operate on low supply voltages, making it suitable for a wide range of applications that require high performance and low power consumption. The AD8028 is optimized for high-speed operations, featuring a bandwidth of 190 MHz and a slew rate of 100 V/µs. This amplifier is particularly useful in applications where low distortion and high signal fidelity are critical.
Key Specifications
| Parameter | Value |
|---|---|
| Bandwidth (G = +1) | 190 MHz |
| Slew Rate | 100 V/µs |
| Supply Voltage Range | 2.7 V to 12 V |
| Quiescent Current per Amplifier | 6.0 mA to 8.0 mA |
| Input Noise Voltage | 4.3 nV/√Hz |
| Input Noise Current | 1.6 pA/√Hz |
| Input Offset Voltage | 900 µV maximum |
| Common-Mode Rejection Ratio | 88 dB to 100 dB |
| Power Supply Rejection Ratio | 88 dB to 100 dB |
| Output Voltage Swing | 0.07 V to 4.93 V (AD8028W only) |
| Short-Circuit Current | 72 mA (sinking and sourcing) |
Key Features
- High speed with 190 MHz bandwidth and 100 V/µs slew rate
- Rail-to-rail input and output
- Low distortion: 120 dBc at 1 MHz SFDR
- Low noise: 4.3 nV/√Hz and 1.6 pA/√Hz
- Low offset voltage: 900 µV maximum
- Low power consumption: 6.0 mA to 8.0 mA quiescent current per amplifier
- Power-down mode with low quiescent current
- No phase reversal: VIN > |VS| + 200 mV
- Selectable input crossover threshold voltage
- Wide supply range: 2.7 V to 12 V
- Small packaging options: 8-lead SOIC, 6-lead SOT-23, 10-lead MSOP
Applications
- Filters
- ADC drivers
- Level shifting
- Buffering
- Professional video
- Low voltage instrumentation
- Automotive applications (AD8028WARMZ-R7 only)
Q & A
- What is the bandwidth of the AD8028AR? The bandwidth of the AD8028AR is 190 MHz at a gain of +1.
- What is the slew rate of the AD8028AR? The slew rate of the AD8028AR is 100 V/µs.
- What is the supply voltage range for the AD8028AR? The supply voltage range for the AD8028AR is 2.7 V to 12 V.
- What is the quiescent current per amplifier for the AD8028AR? The quiescent current per amplifier for the AD8028AR is between 6.0 mA and 8.0 mA.
- Does the AD8028AR have rail-to-rail input and output? Yes, the AD8028AR has rail-to-rail input and output.
- What is the input noise voltage of the AD8028AR? The input noise voltage of the AD8028AR is 4.3 nV/√Hz.
- What are some common applications of the AD8028AR? Common applications include filters, ADC drivers, level shifting, buffering, professional video, and low voltage instrumentation.
- Is the AD8028AR suitable for automotive applications? Yes, the AD8028WARMZ-R7 version is qualified for automotive applications.
- What is the common-mode rejection ratio of the AD8028AR? The common-mode rejection ratio of the AD8028AR is between 88 dB and 100 dB.
- How does the AD8028AR handle power-down mode? In power-down mode, the quiescent current is significantly reduced to between 300 µA and 420 µA.
