AD8031ARTZ-REEL7

The AD8031 (single) and AD8032 (dual) single-supply, voltage feedback amplifiers feature high speed performance with 80 MHz of small signal bandwidth, 30 V/μs slew rate, and 125 ns settling time. This performance is possible while consuming less than 4.0 mW of power from a single 5 V supply. These features increase the operation time of high speed, battery-powered systems without compromising dynamic performance. The products have true single-supply capability with rail-to-rail input and output characteristics and are specified for +2.7 V, +5 V, and ±5 V supplies. The input voltage range can extend to 500 mV beyond each rail. The output voltage swings to within 20 mV of each rail providing the maximum output dynamic range. The AD8031/AD8032 also offer excellent signal quality for only 800 μA of supply current per amplifier; THD is −62 dBc with a 2 V p-p, 1 MHz output signal, and -86 dBc for a 100 kHz, 4.6 V p-p signal on +5 V supply. The low distortion and fast settling time make them ideal as buffers to single-supply ADCs.

Applications

• High speed, battery-operated systems
• High component density systems
• Portable test instruments
• A/D buffers
• Active filters
• High speed, set-and-demand amplifiers

Key features

• Low power
• Supply current 800 μA/amplifier
• Fully specified at +2.7 V, +5 V, and ±5 V supplies
• High speed and fast settling on 5 V
• 80 MHz, -3 dB bandwidth (G = +1)
• 30 V/μs slew rate
• 125 ns settling time to 0.7%
• Rail-to-rail input and output
• No phase reversal with input 0.5 V beyond supplies
• Input CMVR extends beyond rails by 200 mV
• Output swing to within 20 mV of either rail
• Low distortion
• −62 dB @ 1 MHz, VO = 2 V p-p
• −86 dB @ 100 kHz, V0 = 4.6 V p-p
• Output current: 15 mA
• High grade option: VOS (maximum) = 1.5 mV