Overview
The AD835ARZ, produced by Analog Devices Inc., is a complete four-quadrant, voltage output analog multiplier. It is fabricated on an advanced dielectrically isolated complementary bipolar process. This component is designed to generate the linear product of its X and Y voltage inputs, making it highly versatile in various signal processing applications. The AD835ARZ is notable for its high speed, with a −3 dB output bandwidth of 250 MHz and a small signal rise time of 1 ns. It operates from ±5 V supplies and is available in 8-lead SOIC packages, specified to operate over the −40°C to +85°C industrial temperature range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Bandwidth | 250 MHz | |
| Small Signal Rise Time | 1 ns | |
| Full-Scale Rise/Fall Times | 2.5 ns (RL = 150 Ω) | |
| Settling Time to 0.1% FS | 20 ns | |
| Differential Input Impedance | 100 kΩ || 2 pF | |
| Output Voltage Swing | ±2.2 V to ±2.5 V | |
| Output Noise Spectral Density | 50 nV/√Hz | |
| Supply Voltage | ±5 V | |
| Operating Temperature Range | −40°C to +85°C | |
| Package Type | 8-Lead SOIC |
Key Features
- Simple and Versatile: The basic function is W = XY + Z, requiring minimal external components for operation.
- High Speed: Settles to 0.1% of full scale in 20 ns and has a small signal rise time of 1 ns.
- DC-Coupled Voltage Output: Simplifies use and provides a low impedance output capable of driving loads as low as 25 Ω.
- High Differential Input Impedance: X, Y, and Z inputs are at high impedance (100 kΩ || 2 pF), minimizing signal source loading.
- Low Multiplier Noise: Achieves state-of-the-art noise levels of 50 nV/√Hz, making it suitable for low-level signal processing applications.
- Summing Input (Z): Allows for the addition of a signal at the output and provides means to operate with voltage gains up to about ×10.
Applications
- Very Fast Multiplication, Division, Squaring: Ideal for high-speed mathematical operations.
- Wideband Modulation and Demodulation: Suitable for various modulation and demodulation tasks.
- Phase Detection and Measurement: Used in applications requiring precise phase detection.
- Sinusoidal Frequency Doubling: Effective in doubling sinusoidal frequencies.
- Video Gain Control and Keying: Applied in video signal processing for gain control and keying.
- Voltage-Controlled Amplifiers and Filters: Utilized in voltage-controlled amplifiers and filters due to its high precision and speed.
Q & A
- What is the primary function of the AD835ARZ?
The AD835ARZ generates the linear product of its X and Y voltage inputs, with an additional summing input (Z) for added functionality.
- What is the output bandwidth of the AD835ARZ?
The output bandwidth is 250 MHz with a small signal rise time of 1 ns.
- How quickly does the AD835ARZ settle to 0.1% of full scale?
The AD835ARZ settles to 0.1% of full scale in 20 ns.
- What is the typical supply voltage for the AD835ARZ?
The typical supply voltage is ±5 V.
- What is the operating temperature range of the AD835ARZ?
The operating temperature range is −40°C to +85°C.
- What type of package is the AD835ARZ available in?
The AD835ARZ is available in an 8-lead SOIC package.
- What is the output noise spectral density of the AD835ARZ?
The output noise spectral density is 50 nV/√Hz.
- Can the AD835ARZ drive low impedance loads?
Yes, the AD835ARZ can drive loads as low as 25 Ω.
- What are some common applications of the AD835ARZ?
Common applications include very fast multiplication, division, squaring, wideband modulation and demodulation, phase detection and measurement, sinusoidal frequency doubling, video gain control and keying, and voltage-controlled amplifiers and filters.
- How does the summing input (Z) enhance the functionality of the AD835ARZ?
The summing input (Z) allows for the addition of a signal at the output and provides means to operate the AD835ARZ with voltage gains up to about ×10.
