Overview
The AD835 is a complete four-quadrant, voltage output analog multiplier fabricated on an advanced dielectrically isolated complementary bipolar process. It is designed to generate the linear product of its X and Y voltage inputs with a −3 dB output bandwidth of 250 MHz. This component is known for its high speed, simplicity, and versatility, making it suitable for a variety of signal processing applications.
Key Specifications
| Specification | Value |
|---|---|
| Output Bandwidth | 250 MHz |
| Small Signal Rise Time | 1 ns |
| Full-Scale Rise/Fall Time | 2.5 ns (with standard RL of 150 Ω) |
| Settling Time to 0.1% FS | 20 ns |
| Differential Input Impedance (X, Y) | 100 kΩ || 2 pF |
| Output Voltage Range | ±2.5 V |
| Load Drive Capability | Up to 25 Ω |
| Supply Voltage | ±5 V |
| Operating Temperature Range | −40°C to +85°C |
| Package Options | 8-Lead PDIP, 8-Lead SOIC |
Key Features
- High differential input impedance (100 kΩ || 2 pF) to minimize signal source loading.
- DC-coupled voltage output simplifies use.
- Very fast settling time to 0.1% of full scale in 20 ns.
- Low multiplier noise of 50 nV/√Hz.
- High output current capability to drive low impedance loads.
- Minimal external components required for application.
- Voltage gains up to about ×10 possible through the Z input.
Applications
- Very fast multiplication, division, and 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 output bandwidth of the AD835? The AD835 has an output bandwidth of 250 MHz.
- What is the small signal rise time of the AD835? The small signal rise time is 1 ns.
- How quickly does the AD835 settle to 0.1% of full scale? The AD835 settles to 0.1% of full scale in 20 ns.
- What is the differential input impedance of the AD835? The differential input impedance is 100 kΩ || 2 pF.
- What is the output voltage range of the AD835? The output voltage range is ±2.5 V.
- What are the package options for the AD835? The AD835 is available in 8-Lead PDIP and 8-Lead SOIC packages.
- What is the operating temperature range of the AD835? The operating temperature range is −40°C to +85°C.
- Can the AD835 drive low impedance loads? Yes, the AD835 can drive loads as low as 25 Ω.
- What is the noise level of the AD835? The AD835 has a low multiplier noise of 50 nV/√Hz.
- Is the AD835 easy to use? Yes, the AD835 is designed to be simple to use and requires minimal external components.
