Overview
The AD8131ARMZ-REEL, produced by Analog Devices Inc., is a low-cost, high-speed differential driver designed for the transmission of high-speed signals over twisted-pair or coax cables. This component is a significant advancement over traditional op-amps for driving signals over long lines or for driving differential input ADCs. Manufactured on Analog Devices' next-generation XFCB bipolar process, the AD8131 offers a -3 dB bandwidth of 400 MHz and delivers differential signals with very low harmonic distortion. It is suitable for both analog and digital video signals as well as other high-speed data transmission applications.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| -3 dB Bandwidth | 400 MHz | - |
| Gain | Fixed at 2 | No external components required |
| Output Phase Matching | Balanced to -60 dB at 10 MHz | - |
| Harmonic Distortion | Very low | - |
| Operating Temperature Range | -40°C to +125°C | - |
| Package Types | 8-Lead MSOP, 8-Lead SOIC | - |
| Common-Mode Rejection | High common-mode rejection | - |
Key Features
- Internal Feedback Feature: Provides output gain and phase matching, reducing radiated EMI and suppressing harmonics.
- High-Speed Operation: -3 dB bandwidth of 400 MHz, suitable for high-speed signal transmission.
- Low Harmonic Distortion: Delivers differential signals with very low harmonic distortion.
- No External Components Required: Fixed gain of 2 without any external parts.
- Adjustable Common-Mode Level: The VOCM pin allows for adjustable common-mode level, enabling easy level-shifting for single-supply ADCs.
- Fast Overload Recovery: Preserves sampling accuracy by quickly recovering from overloads.
- Compact and Reliable: Available in MSOP and SOIC packages, offering high reliability and ease of use compared to discrete solutions or transformers.
Applications
- Twisted-Pair Line Driver: Suitable for driving Cat3 or Cat5 twisted-pair cables, commonly used in telephony and data communications.
- Differential Input ADCs: Optimizes the distortion performance of differential input ADCs by providing balanced differential outputs.
- Analog and Digital Video Signals: Can be used for both analog and digital video signal transmission.
- High-Speed Data Transmission: Ideal for other high-speed data transmission applications.
- Replacement for Transformers: Can replace transformers in various applications, preserving low frequency and DC information without susceptibility to magnetic interference.
Q & A
- What is the primary function of the AD8131ARMZ-REEL?
The AD8131ARMZ-REEL is a differential driver designed for the transmission of high-speed signals over twisted-pair or coax cables.
- What is the bandwidth of the AD8131ARMZ-REEL?
The -3 dB bandwidth of the AD8131ARMZ-REEL is 400 MHz.
- Does the AD8131ARMZ-REEL require external components for gain setting?
No, the AD8131ARMZ-REEL has a fixed gain of 2 and does not require any external components for this purpose.
- What types of packages are available for the AD8131ARMZ-REEL?
The AD8131ARMZ-REEL is available in 8-Lead MSOP and 8-Lead SOIC packages.
- What is the operating temperature range of the AD8131ARMZ-REEL?
The operating temperature range is -40°C to +125°C.
- Can the AD8131ARMZ-REEL be used to drive differential input ADCs?
- How does the AD8131ARMZ-REEL reduce EMI?
The AD8131ARMZ-REEL reduces radiated EMI through its internal feedback feature, which provides output gain and phase matching balanced to -60 dB at 10 MHz.
- Can the AD8131ARMZ-REEL replace transformers in some applications?
- What is the common-mode level adjustment feature of the AD8131ARMZ-REEL?
The VOCM pin allows for adjustable common-mode level, enabling easy level-shifting for single-supply ADCs with dual supply signals.
- How does the AD8131ARMZ-REEL handle overload conditions?
The AD8131ARMZ-REEL has fast overload recovery, which preserves sampling accuracy by quickly recovering from overloads.
