Overview
The AD8021ARMZ, produced by Analog Devices Inc., is an exceptionally high-performance, high-speed voltage feedback amplifier. It is designed for use in 16-bit resolution systems and is fabricated on Analog Devices' proprietary High Voltage eXtra-Fast Complementary Bipolar (XFCB) process. This amplifier is notable for its low noise and high speed, making it ideal for high-resolution analog-to-digital converters (ADCs), high-speed instruments, and various signal processing applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | MSOP-8, 8-TSSOP |
| Supply Voltage | ±2.25 V to ±12 V, single 5 V supply |
| Quiescent Supply Current | 7 mA @ ±5 V, 1.3 mA with output disable |
| Input Noise Voltage | 2.1 nV/√Hz typical |
| Input Noise Current | 2.1 pA/√Hz typical |
| Input Offset Voltage (Vos) | 1 mV |
| Input Bias Current | 7.5 μA |
| Slew Rate | 460 V/μs |
| Common Mode Rejection Ratio (CMRR) | 98 dB |
| Output Current per Channel | 70 mA |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Low noise and high speed, making it suitable for high-resolution ADCs and high-speed instruments.
- Adjustable compensation for gain bandwidth product, allowing for flexible application configurations.
- Low input offset voltage drift and input bias current drift, ensuring stability over temperature.
- Fast overload recovery and settling time, with a 0.01% settling time in 23 ns for a 1 V step.
- Capable of driving a 75 Ω line with ±3 V video signals.
- Available in both MSOP and TSSOP packages.
Applications
- High-resolution analog-to-digital converters (ADCs).
- High-speed instruments and data acquisition systems.
- Signal processing chains and control loops.
- Differential drivers for balanced lines and other applications requiring differential drive.
- Buffer/drivers for high-resolution ADCs to preserve phase and gain integrity of sampled waveforms.
Q & A
- What is the typical input noise voltage of the AD8021ARMZ?
The typical input noise voltage is 2.1 nV/√Hz. - What is the quiescent supply current of the AD8021ARMZ at ±5 V?
The quiescent supply current is 7 mA at ±5 V, and it can be reduced to 1.3 mA with the output disable pin. - What is the slew rate of the AD8021ARMZ?
The slew rate is 460 V/μs. - What is the common mode rejection ratio (CMRR) of the AD8021ARMZ?
The CMRR is 98 dB. - What are the typical operating supply voltage ranges for the AD8021ARMZ?
The AD8021ARMZ operates over a wide range of supply voltages from ±2.25 V to ±12 V, as well as from a single 5 V supply. - What is the input offset voltage (Vos) of the AD8021ARMZ?
The input offset voltage is 1 mV. - What is the maximum output current per channel of the AD8021ARMZ?
The maximum output current per channel is 70 mA. - What are the package options available for the AD8021ARMZ?
The AD8021ARMZ is available in both MSOP-8 and 8-TSSOP packages. - What is the operating temperature range of the AD8021ARMZ?
The operating temperature range is -40°C to +85°C. - How does the AD8021ARMZ handle differential drive applications?
The AD8021ARMZ is uniquely suited as a low noise differential driver for many ADCs, balanced lines, and other applications requiring differential drive).
