Overview
The ADA4805-1AKSZ-R2, produced by Analog Devices Inc., is a high-speed voltage feedback operational amplifier with rail-to-rail output. It is characterized by its exceptionally low quiescent current of 500 µA, making it ideal for low-power, high-resolution data conversion systems. This amplifier offers excellent performance with a high bandwidth of 105 MHz at a gain of +1, a high slew rate of 160 V/µs, and a low input offset voltage of 125 µV (maximum). The ADA4805-1 also features a shutdown mode that reduces the quiescent supply current to 2.9 µA, allowing for dynamic power management in power-sensitive applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage | - | - | 125 | µV |
| Input Offset Voltage Drift | - | 0.2 | 1.5 | µV/°C |
| Quiescent Current per Amplifier | 570 | 625 | - | µA |
| Bandwidth (-3 dB) | - | 105 | - | MHz |
| Slew Rate | - | 160 | - | V/µs |
| Settling Time to 0.1% | - | 35 | - | ns |
| Input Common-Mode Range | -VS - 0.1 | - | +VS - 1 | V |
| Noise (at 100 kHz) | - | 5.9 | - | nV/√Hz |
| Power Supply Range | 2.7 | - | 10 | V |
| Shutdown Current | 7.4 | - | 12 | µA |
Key Features
- Low input offset voltage: 125 µV (maximum)
- Low input offset voltage drift: 0.2 µV/°C (typical), 1.5 µV/°C (maximum)
- Ultralow supply current: 500 µA per amplifier
- High speed performance: 105 MHz bandwidth, 160 V/µs slew rate
- Rail-to-rail outputs
- Low noise: 5.9 nV/√Hz at 100 kHz
- Low distortion: −102 dBc/−126 dBc HD2/HD3 at 100 kHz
- Dynamic power scaling with shutdown mode
- Fast turn-on time: 3 µs (maximum) fully settled
- Small packaging options: 6-lead SC70, 6-lead SOT-23, 8-lead MSOP
Applications
- High resolution, high precision analog-to-digital converter (ADC) drivers
- Battery-powered instrumentation
- Micropower active filters
- Portable point of sales terminals
- Active RFID readers
- Photo multipliers
- ADC reference buffers
Q & A
- What is the typical quiescent current of the ADA4805-1AKSZ-R2?
The typical quiescent current is 625 µA per amplifier.
- What is the bandwidth of the ADA4805-1AKSZ-R2 at a gain of +1?
The bandwidth is 105 MHz at a gain of +1.
- What is the slew rate of the ADA4805-1AKSZ-R2?
The slew rate is 160 V/µs.
- What is the input offset voltage of the ADA4805-1AKSZ-R2?
The maximum input offset voltage is 125 µV.
- What is the noise level of the ADA4805-1AKSZ-R2 at 100 kHz?
The noise level is 5.9 nV/√Hz at 100 kHz.
- What are the packaging options for the ADA4805-1AKSZ-R2?
The packaging options include 6-lead SC70, 6-lead SOT-23, and 8-lead MSOP.
- How does the shutdown mode affect the quiescent current?
The shutdown mode reduces the quiescent supply current to 2.9 µA.
- What is the turn-on time in shutdown mode?
The turn-on time is 3 µs (maximum) fully settled.
- What are some typical applications of the ADA4805-1AKSZ-R2?
Typical applications include high resolution ADC drivers, battery-powered instrumentation, micropower active filters, and more.
- What is the operating temperature range of the ADA4805-1AKSZ-R2?
The operating temperature range is −40°C to +125°C.
