Overview
The ADA4805-1ARJZ-R7, produced by Analog Devices Inc., is a high-speed, low-power, rail-to-rail output operational amplifier. This device is part of the ADA4805 series, known for its exceptionally low quiescent current of 500 µA, making it ideal for low power, high resolution data conversion systems. The ADA4805-1 offers excellent overall performance, including a high bandwidth of 105 MHz, a high slew rate of 160 V/µs, and a low input offset voltage of 125 µV (maximum). It operates over a wide range of supply voltages from ±1.5 V to ±5 V, as well as single 3 V and 5 V supplies, making it versatile for various high-speed, low-power instruments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Offset Voltage (Vos) | 125 | µV |
| Input Offset Voltage Drift | 0.2 (typical), 1.5 (maximum) | µV/°C |
| Quiescent Current per Amplifier | 500 | µA |
| Bandwidth (-3 dB) | 105 | MHz |
| Slew Rate | 160 | V/µs |
| Settling Time to 0.1% | 35 | ns |
| Input Bias Current | 470 (typical) | nA |
| Noise Voltage Density | 5.9 | nV/√Hz at 100 kHz |
| Noise Current Density | 0.6 | pA/√Hz at 100 kHz |
| Common-Mode Rejection Ratio (CMRR) | 89 to 117 | dB |
| Supply Voltage Range | ±1.5 V to ±5 V, 3 V, 5 V | V |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | 6-Lead SOT-23 |
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, 0.6 pA/√Hz at 100 kHz
- Low distortion: −102 dBc/−126 dBc HD2/HD3 at 100 kHz
- Dynamic power scaling with shutdown pin
- Fast turn-on time: 3 µs (maximum) from shutdown to fully settled
- Small packaging options: 6-lead SOT-23, 6-lead SC70, 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 input offset voltage of the ADA4805-1?
The input offset voltage of the ADA4805-1 is 125 µV (maximum).
- What is the quiescent current per amplifier for the ADA4805-1?
The quiescent current per amplifier is 500 µA.
- What is the bandwidth of the ADA4805-1 at a gain of +1?
The bandwidth is 105 MHz at a gain of +1.
- What is the slew rate of the ADA4805-1?
The slew rate is 160 V/µs.
- What are the available package types for the ADA4805-1?
The ADA4805-1 is available in 6-lead SOT-23, 6-lead SC70, 8-lead MSOP, and 10-lead LFCSP packages.
- What is the operating temperature range for the ADA4805-1?
The operating temperature range is -40°C to 125°C.
- Does the ADA4805-1 have a shutdown feature?
Yes, the ADA4805-1 has a shutdown pin that allows further reduction of the quiescent supply current to 2.9 µA.
- What is the turn-on time from shutdown to fully settled for the ADA4805-1?
The turn-on time is 3 µs (maximum) from shutdown to fully settled.
- What are some common applications of the ADA4805-1?
Common applications include high resolution ADC drivers, battery-powered instrumentation, micropower active filters, portable point of sales terminals, active RFID readers, photo multipliers, and ADC reference buffers.
- Is the ADA4805-1 RoHS compliant?
Yes, the ADA4805-1 is RoHS compliant.
