Overview
The ADA4895-2ARMZ-RL is a dual, high-speed voltage feedback operational amplifier produced by Analog Devices Inc. This amplifier is designed to be gain ≥ 10 stable, featuring low input noise, rail-to-rail output, and a quiescent current of 3 mA per amplifier. It is fabricated using Analog Devices' proprietary next-generation SiGe bipolar process, which enables its high-performance characteristics.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Noise | - | 1 | - | nV/√Hz |
| 1/f Noise at 10 Hz | - | 2 | - | nV/√Hz |
| Quiescent Current per Amplifier | 2.6 | 2.8 | 3.2 | mA |
| Supply Voltage Range | 3 | - | 10 | V |
| Bandwidth (G = +10) | - | 236 | - | MHz |
| Slew Rate | - | 943 | - | V/µs |
| Settling Time to 0.1% | - | 22 | - | ns |
| Input Offset Voltage | - | 350 | - | µV |
| Common-Mode Rejection Ratio | -93 | -110 | - | dB |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Low wideband noise: 1 nV/√Hz
- Low 1/f noise: 2 nV/√Hz at 10 Hz
- High speed: 236 MHz bandwidth (G = +10), 943 V/µs slew rate
- Low distortion: SFDR of −96 dBc at 100 kHz, VOUT = 2 V p-p
- Rail-to-rail output
- Low power consumption: 3 mA per amplifier
- Disable feature
- High common-mode rejection ratio: −93 to −110 dB
Applications
- Low noise preamplifiers
- Ultrasound amplifiers
- PLL loop filters
- High performance analog-to-digital converter (ADC) drivers
- Digital-to-analog converter (DAC) buffers
Q & A
- What is the input noise of the ADA4895-2? The input noise is 1 nV/√Hz.
- What is the quiescent current per amplifier? The quiescent current per amplifier is 3 mA.
- What is the supply voltage range for the ADA4895-2? The supply voltage range is from 3 V to 10 V.
- What is the bandwidth of the ADA4895-2 at a gain of +10? The bandwidth is 236 MHz at a gain of +10.
- What is the slew rate of the ADA4895-2? The slew rate is 943 V/µs.
- What is the settling time to 0.1% for the ADA4895-2? The settling time to 0.1% is 22 ns.
- Does the ADA4895-2 have a disable feature? Yes, the ADA4895-2 has a disable feature.
- What are some common applications of the ADA4895-2? Common applications include low noise preamplifiers, ultrasound amplifiers, PLL loop filters, and drivers for high-performance ADCs and DACs.
- What is the operating temperature range for the ADA4895-2? The operating temperature range is from −40°C to +125°C.
- What is the common-mode rejection ratio of the ADA4895-2? The common-mode rejection ratio is −93 to −110 dB.
