Overview
The AD605ARZ-R7, produced by Analog Devices Inc., is a dual, low noise, single-supply variable gain amplifier (VGA). This device is optimized for applications requiring high performance, low noise, and precise gain control. The AD605 utilizes a differential input, single-supply, exponential amplifier (DSX-AMP) architecture, which ensures a high performance linear-in-dB response. Each channel of the AD605 can be independently controlled and offers a gain range of 48 dB, making it versatile for various signal processing tasks.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.5 to 5.5 | V |
| Power Dissipation | 90 | mW |
| Input Noise Spectral Density | 1.8 | nV/√Hz |
| Input Resistance | 2 | MΩ |
| Gain Range per Channel | −14 dB to +34 dB, 0 dB to +48 dB | dB |
| Gain Scaling (dB/V) | 20 dB/V to 30 dB/V | dB/V |
| Operating Temperature Range | −40°C to +85°C | °C |
| Quiescent Supply Current per Channel | 18 mA | mA |
| Power-Down Current | 1.9 mA | mA |
| Package Type | 16-Lead SOIC_N |
Key Features
- Dual-channel, low noise, variable gain amplifier with linear-in-dB response.
- Differential input, single-supply exponential amplifier (DSX-AMP) architecture.
- Variable attenuator of 0 dB to −48.4 dB followed by a high speed, fixed-gain amplifier.
- Gain range of 48 dB per channel, with options for −14 dB to +34 dB and 0 dB to +48 dB.
- Gain control interface with input resistance of approximately 2 MΩ and scale factors from 20 dB/V to 30 dB/V.
- Power-down feature with current draw of 1.9 mA when VGN is < 50 mV.
- High speed operation with response times of 0.2 μs for 48 dB gain change and 0.6 μs for power-up.
Applications
The AD605ARZ-R7 is suitable for various applications requiring high performance, low noise, and precise variable gain control. These include:
- Audio and video signal processing.
- Medical imaging and diagnostic equipment.
- Industrial control and automation systems.
- Telecommunications and wireless communication systems.
- Any application needing accurate and adjustable gain control.
Q & A
- What is the AD605ARZ-R7?
The AD605ARZ-R7 is a dual, low noise, single-supply variable gain amplifier produced by Analog Devices Inc.
- What is the gain range of the AD605ARZ-R7?
Each channel of the AD605ARZ-R7 offers a gain range of 48 dB, with options for −14 dB to +34 dB and 0 dB to +48 dB.
- What is the input noise spectral density of the AD605ARZ-R7?
The input noise spectral density is 1.8 nV/√Hz.
- How does the gain control interface work?
The gain control interface provides an input resistance of approximately 2 MΩ and scale factors from 20 dB/V to 30 dB/V.
- What are the operating temperature and supply voltage ranges?
The operating temperature range is −40°C to +85°C, and the supply voltage range is 4.5 V to 5.5 V.
- What is the quiescent supply current per channel?
The quiescent supply current per channel is 18 mA.
- How does the power-down feature work?
The amplifier is powered down to draw 1.9 mA when the gain control voltage (VGN) is less than 50 mV.
- What is the response time for a 48 dB gain change?
The response time for a 48 dB gain change is 0.2 μs.
- In what package types is the AD605ARZ-R7 available?
The AD605ARZ-R7 is available in a 16-Lead SOIC_N package.
- What are some typical applications for the AD605ARZ-R7?
Typical applications include audio and video signal processing, medical imaging, industrial control, and telecommunications.
