Overview
The ADA4895-1ARJZ-R2, produced by Analog Devices Inc., is a high-speed voltage feedback operational amplifier. This single-channel amplifier is part of the ADA4895-1 series and is known for its low input noise, rail-to-rail output, and high speed. It is designed to be gain ≥ 10 stable, making it suitable for a variety of high-performance applications. The ADA4895-1 utilizes Analog Devices' proprietary next-generation SiGe bipolar process, ensuring high performance and reliability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Noise (wideband) | 1 | nV/√Hz | ||
| Input Noise (1/f at 10 Hz) | 2 | nV/√Hz | ||
| Input Offset Voltage | 350 | µV | ||
| Bandwidth (−3 dB, G = +10) | 236 | MHz | ||
| Slew Rate | 943 | V/µs | ||
| Settling Time to 0.1% | 22 | ns | ||
| Quiescent Current per Amplifier | 2.6 | 2.8 | 3 | mA |
| Supply Voltage Range | 3 | 10 | V | |
| Operating Temperature Range | −40 | +125 | °C |
Key Features
- Low wideband noise: 1 nV/√Hz and low 1/f noise: 2 nV/√Hz at 10 Hz
- High speed: 236 MHz bandwidth at G = +10 and 943 V/µs slew rate
- Rail-to-rail output
- Low power consumption: 3 mA per amplifier
- Low input offset voltage: 350 µV maximum
- Disable feature for power management
- Wide supply voltage range: 3 V to 10 V
- High spurious-free dynamic range (SFDR): −96 dBc at 100 kHz
Applications
- Low noise preamplifiers
- Ultrasound amplifiers
- PLL loop filters
- Drivers for high-performance analog-to-digital converters (ADCs)
- Buffers for digital-to-analog converters (DACs)
Q & A
- What is the typical bandwidth of the ADA4895-1 at a gain of +10?
The typical bandwidth is 236 MHz at a gain of +10.
- What is the slew rate of the ADA4895-1?
The slew rate is 943 V/µs.
- What is the quiescent current per amplifier for the ADA4895-1?
The quiescent current per amplifier is typically 2.8 mA, with a range of 2.6 mA to 3 mA.
- What is the input noise of the ADA4895-1?
The input noise is 1 nV/√Hz for wideband noise and 2 nV/√Hz at 10 Hz for 1/f noise.
- What is the operating temperature range of the ADA4895-1?
The operating temperature range is −40°C to +125°C.
- What are the typical applications of the ADA4895-1?
Typical applications include low noise preamplifiers, ultrasound amplifiers, PLL loop filters, and drivers for high-performance ADCs and DACs.
- What is the supply voltage range for the ADA4895-1?
The supply voltage range is 3 V to 10 V.
- Does the ADA4895-1 have a disable feature?
- What is the settling time to 0.1% for the ADA4895-1?
The settling time to 0.1% is 22 ns.
- What are the available packages for the ADA4895-1?
The ADA4895-1 is available in 8-lead SOIC and 6-lead SOT-23 packages.
