AD8047ARZ

The AD8047 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, 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.

Applications

• Low Power ADC Input Driver
• Differential Amplifiers
• IF/RF Amplifiers
• Pulse Amplifiers
• Professional Video
• DAC Current to Voltage Conversion
• Baseband and Video Communications
• Pin Diode Receivers
• Active Filters/Integrators

Key features

• Wide Bandwidth AD8047, G = +1 AD8048, G = +2 Small Signal 250 MHz 260 MHz Large Signal (2 V p.p) 130 MHz 160 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/Hz (AD8047), 3.8 nV/Hz (AD8048) Noise
• Drives 50 pF Capacitive Load
• High Speed
• Slew Rate 750 V/μs (AD8047), 1000 V/μs (AD8048)
• Settling 30 ns to 0.01% 2 V Step
• ± 3 V to ± 6 V Supply Operation