Overview
The AD8336ACPZ-WP, produced by Analog Devices Inc., is a general-purpose, wide bandwidth, DC-coupled variable gain amplifier (VGA). This device is designed to operate over a wide range of supply voltages (±3 V to ±12 V) and temperatures (−55°C to +125°C), making it suitable for various industrial, medical, and video applications. The AD8336 features a low noise profile, with voltage noise of 3 nV/√Hz and current noise of 3 pA/√Hz, and it includes an uncommitted preamplifier with a gain range of 6 dB to 26 dB. The VGA section has a gain range of 0 dB to 60 dB, with absolute gain limits of −26 dB to +34 dB, and it utilizes the X-AMP architecture for consistent frequency response across the gain range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±3 V | ±12 V | V | |
| Temperature Range | −55°C | +125°C | °C | |
| Voltage Noise | 3 nV/√Hz | nV/√Hz | ||
| Current Noise | 3 pA/√Hz | pA/√Hz | ||
| Small-Signal Bandwidth | 115 MHz | MHz | ||
| Large-Signal Bandwidth (2 V p-p) | 80 MHz | MHz | ||
| Slew Rate (2 V p-p) | 550 V/µs | V/µs | ||
| Gain Range (VGA) | 0 dB | 60 dB | dB | |
| Gain Scaling | 50 dB/V | dB/V | ||
| Quiescent Current (±3 V, −55°C < T < +125°C) | 22 mA | 25 mA | 30 mA | mA |
| Power Dissipation (±3 V) | 150 mW | mW |
Key Features
- Low Noise: Voltage noise of 3 nV/√Hz and current noise of 3 pA/√Hz.
- Wide Bandwidth: Small-signal bandwidth of 115 MHz and large-signal bandwidth of 80 MHz for 2 V p-p signals.
- High Slew Rate: 550 V/µs for 2 V p-p signals.
- DC-Coupled: Single-ended input and output, suitable for DC-coupled applications.
- Flexible Gain Control: VGA gain range of 0 dB to 60 dB with a gain scaling of 50 dB/V.
- Power Management: Low power mode available by asserting the PWRA pin, reducing quiescent power by half.
- Temperature Stability: Operates over a wide temperature range of −55°C to +125°C.
Applications
- Industrial Process Controls: Suitable for high precision and reliability in industrial environments.
- High Performance AGC Systems: Ideal for automatic gain control in various communication systems.
- I/Q Signal Processing: Used in complex signal processing applications such as in-phase and quadrature signals.
- Video and Imaging: Applicable in video and imaging systems requiring high bandwidth and low noise.
- Industrial and Medical Ultrasound: Suitable for medical and industrial ultrasound applications due to its wide bandwidth and low noise characteristics.
- Radar Receivers: Used in radar systems for signal amplification and processing.
Q & A
- What is the operating temperature range of the AD8336?
The AD8336 operates over a temperature range of −55°C to +125°C.
- What are the supply voltage ranges for the AD8336?
The AD8336 can be supplied with voltages ranging from ±3 V to ±12 V.
- What is the gain range of the VGA section in the AD8336?
The VGA gain range is from 0 dB to 60 dB, with absolute gain limits of −26 dB to +34 dB.
- What is the small-signal bandwidth of the AD8336?
The small-signal bandwidth is 115 MHz.
- How does the AD8336 manage power consumption?
The AD8336 has a power management feature where quiescent power can be reduced by half by asserting the PWRA pin.
- What are the noise characteristics of the AD8336?
The AD8336 has a voltage noise of 3 nV/√Hz and a current noise of 3 pA/√Hz.
- What is the slew rate of the AD8336?
The slew rate is 550 V/µs for 2 V p-p signals.
- Can the AD8336 be used in DC-coupled applications?
Yes, the AD8336 is DC-coupled with single-ended input and output.
- What are some typical applications of the AD8336?
The AD8336 is used in industrial process controls, high performance AGC systems, I/Q signal processing, video and imaging, industrial and medical ultrasound, and radar receivers.
- How does the gain control interface work in the AD8336?
The gain control interface is fully differential, allowing for precise linear in dB gain scaling of 50 dB/V.
