Overview
The AD8132ARMZ , a low-power differential amplifier from Analog Devices (ADI) , is designed for applications that require converting single-ended signals to differential signals or driving differential-input ADCs. It utilizes a current-feedback architecture , delivering 350MHz bandwidth and a slew rate of 1200V/µs while maintaining low power consumption , ensuring high-speed and high-precision signal transmission.
The AD8132ARMZ features a built-in common-mode voltage control function, allowing flexible adjustment of the output signal’s common-mode level to accommodate different ADCs or downstream circuitry. It is widely used in high-speed data acquisition systems, video transmission, instrumentation, and communications systems . The device is housed in an MSOP-8 package , making it suitable for high-density PCB designs.
Core parameters
Parameter | Numerical |
Architecture | Current Feedback Differential Amplifier |
bandwidth | 350MHz (-3dB, gain = +1) |
Slew Rate | 1200V/µs |
Distortion performance | –90dBc (HD2 @ 5MHz, 2Vp-p output) |
Input noise voltage density | 2.6nV/√Hz |
Differential output capability | support |
Common-mode voltage control | Adjustable, compatible with various ADC input ranges |
Supply voltage range | 2.7V ~ 12V (single power supply) or ±1.35V ~ ±6V (dual power supply) |
Quiescent current | 3.2mA (typical) |
Package Type | MSOP-8 |
Operating temperature range | –40°C to +85°C |
Environmental standards | RoHS compliant, lead-free |
Features
Single-ended to differential signal conversion
It can directly convert single-ended input signals into differential outputs to drive high-speed ADCs.
High-speed and high-precision performance
350MHz bandwidth and 1200V/µs slew rate ensure low-distortion transmission of high-speed signals.
Low power design
Each channel consumes only 3.2mA of quiescent current, making it suitable for portable and low-power applications.
Adjustable common mode voltage
It is easy to match with different ADC front ends and improve system compatibility.
High linearity and low distortion
Excellent distortion indicators ensure high-speed signal integrity.
Typical application scenarios
High-speed analog-to-digital converter (ADC) driver
As a front-end driver circuit, it improves ADC input accuracy and dynamic range.
Video and image transmission
Used for differential video signal driving to ensure high-quality image transmission.
Instruments and measuring equipment
Differential signal amplification reduces the impact of noise and interference.
Communication System
Drive high-speed signals in transmit and receive links to optimize signal integrity.
Audio and RF signal processing
High-speed, low-noise differential driver for precision audio and RF front-end applications.
Performance Comparison
Index | AD8132ARMZ | AD8138 (ADI high-performance model) |
bandwidth | 350MHz | 320MHz |
Slew rate | 1200V/µs | 1000V/µs |
Quiescent current | 3.2mA | 16mA |
Common-mode voltage control | support | support |
Power consumption advantage | Low power consumption | Higher power consumption and better performance |
AD8132ARMZ achieves a good balance between bandwidth and power consumption and is more suitable for low-power and high-speed applications.
Manufacturer Profile: Analog Devices (ADI)
Devices (ADI) is a leading global manufacturer of high-performance analog and mixed-signal chips. Its AD813x series of differential amplifiers, renowned for their high bandwidth, low noise, and low distortion, are widely used in data acquisition, communications, and measurement equipment. The AD8132ARMZ is a low-power model in this series, ideal for portable and embedded systems.
Why choose AD8132ARMZ?
● Single-ended to differential conversion , easily drives ADC
● 350MHz high bandwidth + 1200V/µs high-speed slew rate
● Low power consumption (3.2mA) , suitable for battery and low-power applications
● Adjustable common-mode voltage , compatible with various systems
● Low distortion and low noise to ensure signal integrity
Frequently Asked Questions (FAQ)
Q1: Is the AD8132ARMZ suitable for directly driving high-speed ADCs?
A: Yes. The AD8132ARMZ is a dedicated differential amplifier, ideally suited for driving the differential inputs of high-speed, high-resolution ADCs. Its low distortion and low noise ensure signal integrity, and its high common-mode rejection (CMRR) effectively reduces distortion during single-ended-to-differential conversion, making it ideal for use in communications systems, imaging equipment, and high-speed data acquisition.
Q2: Can it operate from a single power supply?
A: Yes. This device supports single-supply operation from 2.7V to 12V , as well as dual-supply operation from ±1.35V to ±6V , offering a wide adaptability range. Even in single-supply mode, it still provides rail-to-rail output swing, facilitating compatibility with low-voltage ADCs or single-supply systems. For applications requiring greater dynamic range, dual-supply operation can be selected to optimize performance.
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