Overview
The AD8018AR-REEL7 is a high-performance, rail-to-rail output, high-output current amplifier produced by Analog Devices Inc. This component is specifically designed for use in single-supply xDSL modems and other applications requiring high output current and low distortion. The AD8018 features two current feedback amplifiers that can deliver up to 400 mA of output current while maintaining low distortion and high speed.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3.3 | - | 8 | V |
| Output Current | - | - | 400 | mA |
| Bandwidth (–3 dB) | - | 130 | - | MHz |
| Slew Rate | - | 300 | - | V/μs |
| Voltage Noise Density | - | 4.5 | - | nV/√Hz |
| Operating Temperature | -40 | - | 85 | °C |
| Package Type | - | - | - | 8-SOIC |
| Mounting Type | - | - | - | Surface Mount |
Key Features
- Rail-to-rail output voltage, allowing the amplifier to swing to within 0.5 V of either power supply rail.
- High output current capability of up to 400 mA into a differential load of 10 Ω.
- Low single-tone distortion of –86 dBc for a 6 V p-p signal into a differential 10 Ω load at 100 kHz.
- Low noise with a voltage noise density of 4.5 nV/√Hz at 100 kHz.
- High speed performance with a bandwidth of 130 MHz and a slew rate of 300 V/μs.
- Flexible standby and shutdown modes controlled by two digital logic bits (PWDN1 and PWDN0).
- Low power operation with a supply current of 9 mA per amplifier.
Applications
- xDSL modems, particularly in single-supply configurations.
- USB, PCI, and PCMCIA cards.
- Consumer DSL modems.
- Twisted pair line drivers.
Q & A
- What is the maximum output current of the AD8018?
The AD8018 can deliver up to 400 mA of output current into a differential load of 10 Ω.
- What is the bandwidth of the AD8018?
The bandwidth of the AD8018 is 130 MHz.
- What is the slew rate of the AD8018?
The slew rate of the AD8018 is 300 V/μs.
- What are the standby and shutdown modes of the AD8018?
The AD8018 has three modes controlled by two digital logic bits (PWDN1 and PWDN0): full power, standby (outputs low impedance), and shutdown (outputs high impedance).
- What is the operating temperature range of the AD8018?
The operating temperature range of the AD8018 is –40°C to +85°C.
- What is the package type of the AD8018AR-REEL7?
The AD8018AR-REEL7 comes in an 8-lead SOIC package.
- Is the AD8018 RoHS compliant?
Yes, the AD8018 is RoHS compliant and lead-free.
- What is the typical supply current per amplifier?
The typical supply current per amplifier is 9 mA.
- What are some common applications of the AD8018?
The AD8018 is commonly used in xDSL modems, USB, PCI, and PCMCIA cards, consumer DSL modems, and twisted pair line drivers.
- What is the voltage noise density of the AD8018?
The voltage noise density of the AD8018 is 4.5 nV/√Hz at 100 kHz.
