Overview
The AD8132ARMZ-REEL, produced by Analog Devices Inc., is a low-cost, high-speed differential amplifier designed for converting single-ended or differential input signals to differential output signals. This amplifier is a significant advancement over traditional op-amps, particularly for driving differential input ADCs or transmitting high-speed signals over long lines. Manufactured using Analog Devices' next-generation XFCB bipolar process, the AD8132 offers high performance with a −3 dB bandwidth of 350 MHz and a differential signal with −99 dBc SFDR at 5 MHz.
The AD8132 features a unique internal feedback mechanism that ensures output gain and phase matching, suppressing harmonics and reducing radiated EMI. It also allows for adjustable common-mode level of the differential output by applying a voltage on the VOCM pin, making it suitable for driving single-supply ADCs.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| −3 dB Large Signal Bandwidth | VOUT = 2 V p-p | 300 | 350 | MHz | |
| −3 dB Small Signal Bandwidth | VOUT = 0.2 V p-p | 360 | MHz | ||
| Bandwidth for 0.1 dB Flatness | VOUT = 0.2 V p-p | 90 | MHz | ||
| Slew Rate | VOUT = 2 V p-p | 1000 | 1200 | V/μs | |
| Settling Time (0.1%) | 50 | ns | |||
| Input Voltage Noise (RTI) | f = 0.1 MHz to 100 MHz | 12 | nV/√Hz | ||
| Input Voltage Range | 1.0 | 3.7 | V | ||
| Input Resistance | 30 | kΩ | |||
| Input Offset Voltage | VOS, cm = VOUT, cm; VDIN+ = VDIN− = VOCM = 2.5 V | ±5 | ±11 | mV | |
| Input Bias Current | 0.5 | μA | |||
| CMRR | ΔVOUT, dm/ΔVOCM; ΔVOCM = 2.5 V ±1 V | dB | |||
| Power Supply Range | 2.7 | 11 | V | ||
| Quiescent Current | VDIN+ = VDIN− = VOCM = 0 V | 7.25 | mA | ||
| Operating Temperature Range | −40 | +125 | °C |
Key Features
- High-Speed Operation: The AD8132 has a −3 dB bandwidth of 350 MHz and a slew rate of up to 1200 V/μs, making it suitable for high-speed signal transmission.
- Differential Signal Processing: It reduces the effects of ground noise by processing signals differentially, ensuring better signal integrity.
- Adjustable Common-Mode Level: The VOCM pin allows for adjustable common-mode level of the differential output, facilitating level shifting for single-supply ADCs.
- Low Power Consumption: The amplifier operates with a quiescent current of 7.25 mA, making it power-efficient.
- Internal Feedback Mechanism: Provides output gain and phase matching, suppressing harmonics and reducing radiated EMI.
- Automotive Grade Version: The AD8132W is fully AEC-Q100 qualified for automotive applications.
Applications
- Differential ADC Drivers: Ideal for driving differential input ADCs, preserving low-frequency and DC information.
- Video Line Drivers: Suitable for driving analog or digital video signals over twisted pair or coaxial cables.
- Differential Gain and Filtering: Can be used throughout the signal chain for differential signal processing, including gain and filtering.
- Single-Ended to Differential Output Drivers: Converts single-ended input signals to differential output signals.
- Automotive Driver Assistance and Infotainment: The AD8132W is used in automotive applications due to its AEC-Q100 qualification.
Q & A
- What is the primary function of the AD8132?
The AD8132 is a differential or single-ended input to differential output amplifier with resistor set gain.
- What is the bandwidth of the AD8132?
The AD8132 has a −3 dB bandwidth of 350 MHz.
- How does the AD8132 reduce EMI?
The AD8132 has a unique internal feedback feature that provides output gain and phase matching, suppressing harmonics and reducing radiated EMI.
- What is the power supply range for the AD8132?
The power supply range for the AD8132 is from 2.7 V to 11 V.
- Is the AD8132 suitable for automotive applications?
Yes, the AD8132W is fully AEC-Q100 qualified for automotive applications.
- How does the AD8132 handle common-mode level adjustment?
The common-mode level of the differential output is adjustable by applying a voltage on the VOCM pin.
- What are the typical applications of the AD8132?
The AD8132 is used in differential ADC drivers, video line drivers, differential gain and filtering, and single-ended to differential output drivers.
- What is the slew rate of the AD8132?
The slew rate of the AD8132 is up to 1200 V/μs.
- What are the package options for the AD8132?
The AD8132 is available in 8-lead SOIC and 8-lead MSOP packages.
- What is the operating temperature range for the AD8132?
The operating temperature range for the AD8132 is from −40°C to +125°C.
