Overview
The AD8048ARZ, produced by Analog Devices Inc., is a high-speed, wide bandwidth voltage feedback operational amplifier. It is part of the AD8047 and AD8048 series, which are designed to meet the requirements of applications that previously relied on current feedback amplifiers. The AD8048 is stable at gains of two or greater, making it versatile for various high-frequency applications. This amplifier combines the best characteristics of both current feedback and voltage feedback architectures, offering fast and accurate pulse response, low distortion, and the ability to drive capacitive loads.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 6 V to 12 V, +/- 3 V to +/- 6 V | V |
| Operating Supply Current | 6.6 mA | mA |
| Gain Bandwidth Product (GBP) | 120 MHz | MHz |
| Slew Rate (SR) | 1000 V/µs | V/µs |
| Input Offset Voltage (Vos) | 1 mV | mV |
| Input Bias Current (Ib) | 3.5 µA | µA |
| Common Mode Rejection Ratio (CMRR) | 80 dB | dB |
| Power Supply Rejection Ratio (PSRR) | 78 dB | dB |
| Input Voltage Noise Density | 3.8 nV/√Hz | nV/√Hz |
| Maximum Operating Temperature | +85°C | °C |
| Minimum Operating Temperature | -40°C | °C |
| Package/Case | 8-SOIC | |
| Number of Channels | 1 Channel | |
| Output Current per Channel | 50 mA | mA |
Key Features
- Wide Bandwidth: Small signal bandwidth of 260 MHz and large signal bandwidth of 160 MHz at a gain of 2.
- Low Distortion: Achieves -54 dBc distortion at 20 MHz and -66 dBc at 5 MHz.
- Low Noise: Input voltage noise density of 3.8 nV/√Hz.
- High Speed: Slew rate of 1000 V/µs and settling time of 30 ns to 0.01% for a 2 V step.
- Capacitive Load Drive: Can drive 50 pF capacitive loads.
- Flexible Supply Operation: Operates from ±3 V to ±6 V supply voltages.
- High Impedance Inputs: Balanced high impedance inputs suitable for active filters and high-speed ADC buffering.
Applications
- Video and Baseband Communications: Ideal for video amplifiers and baseband signal processing due to its high bandwidth and low distortion.
- Active Filters and Integrators: Suitable for designing active filters and integrators with its balanced high impedance inputs.
- High-Speed ADC Buffering: Can buffer high-speed ADCs, supporting up to 12-bit/10 MSPS or 8-bit/60 MSPS ADCs.
- Instrumentation and Measurement Systems: Used in instrumentation and measurement systems where precision and accuracy are critical.
Q & A
- What is the gain stability of the AD8048?
The AD8048 is stable at gains of two or greater.
- What is the maximum operating supply current of the AD8048?
The maximum operating supply current is 6.6 mA.
- What is the slew rate of the AD8048?
The slew rate is 1000 V/µs.
- What is the input offset voltage of the AD8048?
The input offset voltage is 1 mV.
- Can the AD8048 drive capacitive loads?
Yes, it can drive 50 pF capacitive loads.
- What are the typical operating temperature ranges for the AD8048?
The operating temperature range is from -40°C to +85°C.
- What package types are available for the AD8048?
The AD8048 is available in 8-lead PDIP and SOIC packages.
- What is the common mode rejection ratio (CMRR) of the AD8048?
The CMRR is 80 dB.
- Is the AD8048 RoHS compliant?
Yes, the AD8048 is RoHS compliant.
- What are some typical applications of the AD8048?
Typical applications include video and baseband communications, active filters, high-speed ADC buffering, and instrumentation and measurement systems.
