AD8047

250兆赫，通用电压反馈运算放大器 250 MHz, General Purpose Voltage Feedback Op Amps

Product Details

The and AD8048 are very high speed and wide bandwidth amplifiers. The AD8047 is unity gain stable. The AD8048 is stable at gains of two or greater. The AD8047 and AD8048, which utilize a voltage feedback architecture, meet the requirements of many applications that previously depended on current feedback amplifiers.

A proprietary circuit has produced an amplifier that combines many of the best characteristics of both current feedback and voltage feedback amplifiers. For the power 6.6 mA max the AD8047 and AD8048 exhibit fast and accurate pulse response 30 ns to 0.01% as well as extremely wide small signal and large signal bandwidth and low distortion. The AD8047 achieves -54 dBc distortion at 20 MHz and 250 MHz small signal and 130 MHz large signal bandwidths.

The AD8047 and AD8048"s low distortion and cap load drive make the AD8047/AD8048 ideal for buffering high speed ADCs. They are suitable for 12 bit/10 MSPS or 8 bit/60 MSPS ADCs. Additionally, the balanced high impedance inputs of the voltage feedback architecture allow maximum flexibility when designing active filters.

The AD8047 and AD8048 are offered in industrial -40°C to +85°C temperature ranges and are available in 8-lead PDIP and SOIC packages.

An evaluation board is available for this product and may be ordered using the following product number: AD8047-EB and AD8048-EB. Schematic and layout for this evaluation board is contained in the product data sheet.

AD8047 Gain 1 Stable PDIP and SOIC

AD8048 Gain 2 Stable PDIP and SOIC

### Features and Benefits

.

Wide Bandwidth, G = +1

Small Signal: 250 MHz

Large Signal 2 V p-p: 130 MHz

.

5.8 mA Typical Supply Current

.

Low Distortion, SFDR Low Noise

-66 dBc Typ @ 5 MHz

-54 dBc Typ @ 20 MHz

.

5.2 nV/vHz Noise

.

Drives 50 pF Capacitive Load

.

High Speed

Slew Rate 750 V/µs

Settling 30 ns to 0.01%, 2 V Step

±3 V to ±6 V Supply Operation