Overview
The AD8132AR, produced by Analog Devices Inc., is a low-cost, high-speed differential or single-ended input to differential output amplifier. It is designed with a resistor set gain and is a significant advancement over traditional op-amps, particularly for driving differential input ADCs or transmitting signals over long lines. The AD8132AR features a unique internal feedback mechanism that ensures output gain and phase matching, suppressing harmonics and reducing radiated EMI. Manufactured using Analog Devices' next-generation XFCB bipolar process, this amplifier offers a -3 dB bandwidth of 350 MHz and delivers a differential signal with a -99 dBc SFDR at 5 MHz.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| -3 dB Bandwidth | - | 350 | - | MHz |
| Slew Rate | - | 340 | - | V/μs |
| Input Voltage Noise (RTI) | - | 12 | - | nV/√Hz |
| Input Bias Current | - | 3 | 7 | μA |
| Input Offset Voltage | - | 1 | - | mV |
| Supply Current | - | 10.7 | - | mA @ 5 V |
| Supply Voltage Range | +2.7 V to ±1.35 V | - | ±5.5 V | V |
| Package Type | - | 8-SOIC, 8-MSOP | - | - |
Key Features
- Unique internal feedback feature for output gain and phase matching, reducing harmonics and EMI.
- High-speed operation with a -3 dB bandwidth of 350 MHz.
- Low power consumption: 10.7 mA at 5 V supply.
- Adjustable common-mode level of the differential output via the VOCM pin.
- Fast overload recovery to preserve sampling accuracy.
- Capable of driving high-speed signals over twisted pair or coaxial cables with minimal line attenuation.
- AEC-Q100 qualified for automotive applications (AD8132W version).
Applications
- Differential ADC drivers.
- Differential gain and filtering.
- Video line drivers.
- Single-ended input to differential output drivers.
- Active transformers.
- Automotive driver assistance systems.
- Automotive infotainment systems.
- High-speed data transmission over twisted pair or coaxial cables.
Q & A
- What is the primary function of the AD8132AR?
The AD8132AR is a differential or single-ended input to differential output amplifier with resistor set gain, designed for high-speed applications.
- What is the -3 dB bandwidth of the AD8132AR?
The -3 dB bandwidth of the AD8132AR is 350 MHz.
- What is the typical slew rate of the AD8132AR?
The typical slew rate of the AD8132AR is 340 V/μs.
- How does the AD8132AR reduce EMI?
The AD8132AR reduces EMI through its unique internal feedback feature that provides output gain and phase matching.
- What is the power consumption of the AD8132AR at a 5 V supply?
The power consumption of the AD8132AR at a 5 V supply is 10.7 mA.
- Can the AD8132AR be used in automotive applications?
Yes, the AD8132W version is AEC-Q100 qualified for automotive applications.
- What types of packages are available for the AD8132AR?
The AD8132AR is available in 8-lead SOIC and 8-lead MSOP packages.
- How does the AD8132AR handle common-mode voltage adjustment?
The common-mode level of the differential output can be adjusted by applying a voltage on the VOCM pin.
- What kind of cables can the AD8132AR drive signals over?
The AD8132AR can drive signals over twisted pair or coaxial cables with minimal line attenuation.
- What are some common applications of the AD8132AR?
Common applications include differential ADC drivers, video line drivers, and high-speed data transmission over cables.
