Overview
The AD8132ARM, produced by Analog Devices Inc., is a low-cost, high-speed differential or single-ended input to differential output amplifier. It is designed with resistor settable gain and is a significant advancement over traditional op-amps for driving differential input ADCs or for transmitting signals over long lines. The AD8132 utilizes Analog Devices' next-generation XFCB bipolar process, offering a −3 dB bandwidth of 350 MHz and delivering a differential signal with −99 dBc SFDR at 5 MHz. This amplifier features a unique internal feedback mechanism that ensures output gain and phase matching, suppressing harmonics and reducing radiated EMI.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| −3 dB Bandwidth | 300 | 350 | MHz | |
| Slew Rate | 340 | V/μs | ||
| Input Voltage Noise (RTI) | 12 | nV/√Hz | ||
| Input Current Noise | 1.8 | pA/√Hz | ||
| Input Offset Voltage (RTI) | ±1.0 | ±3.5 | mV | |
| Input Bias Current | 3 | 7 | μA | |
| Power Supply Range | +2.7 | ±5.5 | V | |
| Quiescent Current | 10.7 | mA @ 5 V | ||
| Operating Temperature Range | −40 | +125 | °C |
Key Features
- Low power consumption: 10.7 mA at 5 V.
- High-speed operation: −3 dB bandwidth of 350 MHz.
- Low distortion: −99 dBc SFDR at 5 MHz.
- Adjustable common-mode output voltage via VOCM pin.
- Resistor settable gain.
- Unique internal feedback feature for output gain and phase matching, suppressing harmonics and reducing radiated EMI.
- Fast overload recovery to preserve sampling accuracy.
- Available in 8-lead SOIC and 8-lead MSOP packages.
Applications
- Low power differential ADC drivers.
- Differential gain and differential filtering.
- Video line drivers.
- Differential in/out level shifting.
- Single-ended input to differential output drivers.
- Active transformers.
- Automotive driver assistance and infotainment systems (AD8132W is AEC-Q100 qualified).
- Transmission of high-speed signals over twisted pair or coaxial cables.
- Analog or digital video signals and other high-speed data transmission.
Q & A
- What is the primary function of the AD8132ARM?
The AD8132ARM is a low-cost, high-speed differential or single-ended input to differential output amplifier with resistor settable gain.
- What is the bandwidth of the AD8132ARM?
The AD8132ARM has a −3 dB bandwidth of 350 MHz.
- How does the AD8132ARM reduce EMI?
The AD8132ARM features a unique internal feedback mechanism that suppresses harmonics and reduces radiated EMI.
- What is the power consumption of the AD8132ARM at 5 V?
The AD8132ARM consumes 10.7 mA at 5 V.
- What are the common applications of the AD8132ARM?
Common applications include low power differential ADC drivers, differential gain and filtering, video line drivers, and transmission of high-speed signals over twisted pair or coaxial cables.
- Is the AD8132ARM suitable for automotive applications?
Yes, the AD8132W version is AEC-Q100 qualified for automotive applications.
- How can the common-mode output voltage be adjusted in the AD8132ARM?
The common-mode output voltage can be adjusted by applying a voltage on the VOCM pin.
- What are the available package types for the AD8132ARM?
The AD8132ARM is available in 8-lead SOIC and 8-lead MSOP packages.
- What is the operating temperature range of the AD8132ARM?
The operating temperature range is −40°C to +125°C.
- Does the AD8132ARM support fast overload recovery?
Yes, the AD8132ARM features fast overload recovery to preserve sampling accuracy.
