Overview
The AD835AN, 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, offering high-speed and versatility in signal processing applications. The AD835AN generates the linear product of its X and Y voltage inputs, with a −3 dB output bandwidth of 250 MHz and a small signal rise time of 1 ns. This device is designed to be simple to use, requiring minimal external components, and is suitable for a wide range of applications due to its high differential input impedance and low output impedance.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Bandwidth | 250 | MHz | ||
| Small Signal Rise Time | 1 | ns | ||
| Full-Scale Rise/Fall Time | 2.5 | ns (RL = 150 Ω) | ||
| Settling Time to 0.1% FS | 20 | ns (RL = 150 Ω) | ||
| Differential Input Resistance | 100 | kΩ || 2 pF | ||
| Output Voltage Swing | ±2.0 | ±2.5 | V (RL = 150 Ω) | |
| Voltage Noise Spectral Density | 50 | nV/√Hz (f < 10 MHz) | ||
| Supply Voltage | ±5 | V | ||
| Operating Temperature Range | -40 | +85 | °C |
Key Features
- Simple and complete four-quadrant analog multiplier with minimal external components required.
- Very fast operation: settles to 0.1% of full scale in 20 ns.
- DC-coupled voltage output simplifies use.
- High differential input impedance (100 kΩ || 2 pF) for X, Y, and Z inputs.
- Low multiplier noise: 50 nV/√Hz.
- Low impedance output voltage can provide up to ±2.5 V and drive loads as low as 25 Ω.
- Summing input (Z) allows for voltage gains up to about ×10.
Applications
- Very fast multiplication, division, squaring.
- Wideband modulation and demodulation.
- Phase detection and measurement.
- Sinusoidal frequency doubling.
- Video gain control and keying.
- Voltage-controlled amplifiers and filters.
Q & A
- What is the primary function of the AD835AN?
The AD835AN is a four-quadrant, voltage output analog multiplier that generates the linear product of its X and Y voltage inputs.
- What is the output bandwidth of the AD835AN?
The output bandwidth is 250 MHz with a small signal rise time of 1 ns.
- How fast does the AD835AN settle to 0.1% of full scale?
The AD835AN settles to 0.1% of full scale in 20 ns.
- What is the differential input impedance of the AD835AN?
The differential input impedance is 100 kΩ || 2 pF for X, Y, and Z inputs.
- What is the voltage noise spectral density of the AD835AN?
The voltage noise spectral density is 50 nV/√Hz for frequencies less than 10 MHz.
- What is the typical output voltage swing of the AD835AN?
The output voltage swing is typically ±2.5 V with a load resistance of 150 Ω.
- What are the supply voltage requirements for the AD835AN?
The AD835AN operates from ±5 V supplies.
- What is the operating temperature range of the AD835AN?
The operating temperature range is from -40°C to +85°C.
- What are some common applications of the AD835AN?
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.
- In what packages is the AD835AN available?
The AD835AN is available in 8-lead PDIP and 8-lead SOIC packages.
