Overview
The AD8132ARZ-RL, manufactured by Analog Devices Inc., is a low-cost, high-speed differential amplifier designed to provide high performance in various applications. It features a unique internal feedback mechanism that ensures output gain and phase matching, suppressing harmonics and reducing radiated EMI. This amplifier is particularly useful for driving differential input ADCs, transmitting high-speed signals over long lines, and in differential signal processing. The AD8132 is fabricated using Analog Devices' next-generation XFCB bipolar process, offering a -3 dB bandwidth of 350 MHz and a differential signal with -99 dBc SFDR at 5 MHz.
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 |
| Slew Rate | VOUT = 2 V p-p | 1000 | 1200 | - | V/μs |
| Power Supply Range | - | +2.7 V to ±5.5 V | - | - | V |
| Input Bias Current | TA = 25°C | 3 | 7 | - | μA |
| Input Resistance (Differential) | - | - | 12 MΩ | - | Ω |
| Input Capacitance | - | - | 1 pF | - | pF |
| Common-Mode Rejection Ratio (CMRR) | ΔVIN, cm = ±1 V | -70 | -60 | - | dB |
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 applications.
- Low Power Consumption: It operates with a low power consumption of 10.7 mA at 5 V, making it energy-efficient.
- Internal Feedback Mechanism: The unique internal feedback feature provides output gain and phase matching balanced to -68 dB at 10 MHz, reducing harmonics and radiated EMI.
- Adjustable Common-Mode Output: The common-mode level of the differential output is adjustable, allowing for easy level shifting of input signals for driving single-supply ADCs.
- Automotive Grade: The AD8132W version is fully AEC-Q100 qualified for automotive applications, ensuring reliability up to 125°C.
Applications
- Low Power Differential ADC Drivers: Ideal for driving differential input ADCs while preserving low frequency and DC information.
- Differential Gain and Filtering: Used in differential signal processing to reduce ground noise and simplify the conversion between differential and single-ended components.
- Video Line Drivers: Suitable for driving analog or digital video signals over twisted pair or coaxial cables with minimal line attenuation.
- Automotive Driver Assistance and Infotainment: The AD8132W version is used in automotive systems due to its AEC-Q100 qualification and high reliability.
- Active Transformers and Level Shifting: Can be used as a differential driver for high-speed signal transmission and level shifting in various applications.
Q & A
- What is the -3 dB bandwidth of the AD8132?
The AD8132 has a -3 dB bandwidth of 350 MHz.
- What is the slew rate of the AD8132?
The slew rate of the AD8132 is up to 1200 V/μs.
- What is the power supply range of the AD8132?
The power supply range of the AD8132 is +2.7 V to ±5.5 V.
- Is the AD8132 suitable for automotive applications?
Yes, the AD8132W version is fully AEC-Q100 qualified for automotive applications.
- How does the AD8132 reduce radiated EMI?
The AD8132 reduces radiated EMI through its unique internal feedback feature that provides output gain and phase matching balanced to -68 dB at 10 MHz.
- What is the input resistance of the AD8132?
The input resistance of the AD8132 is 12 MΩ (differential).
- Can the AD8132 drive twisted pair or coaxial cables?
Yes, the AD8132 can drive either Category 3 or Category 5 twisted pair or coaxial cables with minimal line attenuation.
- How does the AD8132 handle common-mode output voltage?
The common-mode level of the differential output is adjustable by applying a voltage on the VOCM pin.
- What is the typical input bias current of the AD8132?
The typical input bias current of the AD8132 is 7 μA at 25°C.
- What are the package options for the AD8132?
The AD8132 is available in both 8-lead SOIC and 8-lead MSOP packages.
