THS4520RGTT

A wideband, fully differential operational amplifier designed for 5-V data acquisition systems. It has very low noise at 2 nV/√Hz, and low harmonic distortion of –115 dBc HD₂ and –123 dBc HD₃ at 100 kHz with 8 Vₚₚ, and 1-kΩ load. The slew rate is 570 V/μs, and with a settling time of 7 ns to 0.1% (2-V step), it is ideal for data acquisition applications. It is designed for unity gain stability. To allow for dc coupling to ADCs, its unique output common-mode control circuit maintains the output common-mode voltage within 0.25 mV offset (typical) from the set voltage. The common-mode set point defaults to mid-supply by internal circuitry, which may be over-driven from an external source. The input and output are optimized for best performance with their common-mode voltages set to mid-supply. Along with high performance at low power supply voltage, this makes for extremely high performance single supply 5-V and 3.3-V data acquisition systems. It is offered in a Quad 16-pin leadless QFN package (RGT), and is characterized for operation over the full industrial temperature range from -40°C to 85°C.

Applications

• 5-V and 3.3-V Data Acquisition Systems
• High Linearity ADC Amplifier
• Wireless Communication
• Test and Measurement Voice Processing Systems

Key features

• Fully Differential Architecture With Rail-to-Rail Outputs Centered Input Common-mode Range
• Minimum Gain of 1 V/V (0 dB) Bandwidth: 620 MHz
• Slew Rate: 570 V/μs
• 0.1% Settling Time: 7 ns
• HD₂: –115 dBc at 100 kHz, V₀D = 8 Vₚₚ
• HD₃: –123 dBc at 100 kHz, V₀D = 8 Vₚₚ
• Input Voltage Noise: 2 nV/√Hz (f > 10 kHz)
• Output Common-Mode Control Power Supply:
• Voltage: 3.3 V (±1.65 V) to 5 V (±2.5 V)
• Current: 14.2 mA
• Power-Down Capability: 15 μA