OPA653IDBVT

The OPA653 combines a very wideband voltage-feedback operational amplifier with a JFET-input stage with internal gain setting resistors to achieve an ultra-high, dynamic-range amplifier for fixed gain of +2-V/V or -1-V/V applications. The 500-MHz wide gain of +2-V/V bandwidth is complemented by a very high 2675-V/μs slew rate and fast settling time that make it ideal for time-domain and pulse-oriented applications. Excellent –72-dBc THD distortion performance at 10 MHz makes the OPA653 an excellent choice for frequency-domain and FFT analysis applications. Additionally, with the low 6.1-nV/√Hz voltage noise, low bias current, and high impedance JFET input, it supports very low noise, wideband, high input impedance applications. Examples include high-impedance probes, data acquisition cards, and oscilloscope front-ends.

Applications

• TEST AND MEASUREMENT FRONT-END
• HIGH-INPUT IMPEDANCE PROBES
• DATA ACQUISITION CARDS
• OSCILLOSCOPE INPUT
• ADC INPUT AMPLIFIER

Key features

• HIGH BANDWIDTH: 500 MHz (G = +2 V/V)
• HIGH SLEW RATE: 2675 V/μs (4-V Step)
• EXCELLENT THD: –71dBc at 10 MHz
• LOW INPUT VOLTAGE NOISE: 6.1 nV/√Hz
• FAST OVERDRIVE RECOVERY: 8 ns
• FAST SETTLING TIME (1%, 4-V Step): 7.9 ns
• LOW INPUT OFFSET VOLTAGE: ±1 mV
• LOW INPUT BIAS CURRENT: ±10 pA
• HIGH INPUT IMPEDANCE: 10¹² Ω || 2.5 pF
• INTERNAL GAIN SETTING RESISTORS: G = +2 V/V or G = -1 V/V
• HIGH OUTPUT CURRENT: 70 mA