描述 Description

The THS4509-Q1 is a wideband, fully differential operational amplifier designed for 5-V data-acquisition systems. It has very low noise at 1.9?nV/√Hz, and extremely low harmonic distortion of –75-dBc HD2 and –80-dBc HD3 at 100?MHz with 2?Vpp, G?=?10?dB, and 1-kΩ load. Slew rate is very high at 6600?V/μs and with settling time of 2?ns to 1% (2-V step), it is ideal for pulsed applications. It is designed for minimum gain of 6?dB but is optimized for gain of 10?dB.
To allow for dc coupling to analog-to-digital converters (ADCs), its unique output common-mode control circuit maintains the output common-mode voltage within 3-mV offset (typical) from the set voltage, when set within 0.5?V of mid-supply, with less than 4-mV differential offset voltage. The common-mode set point is set to mid-supply by internal circuitry, which may be overdriven 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 data-acquisition systems.
The THS4509-Q1 is offered in a quad 16-pin leadless QFN package (RGT) and is characterized for operation over the full automotive temperature range from –40°C to 125°C.

特性 Features

? Qualified for Automotive Applications
? Fully Differential Architecture
? Centered Input Common-Mode Range
? Minimum Gain of 2?V/V (6 dB)
? Bandwidth: 1900 MHz
? Slew Rate: 6600 V/μs
? 1% Settling Time: 2 ns
? HD2: –75 dBc at 100 MHz
? HD3: –80 dBc at 100 MHz
? OIP2: 73 dBm at 70 MHz
? OIP3: 37 dBm at 70 MHz
? Input Voltage Noise: 1.9 nV/√Hz (f?>?10?MHz)
? Noise Figure: 17.1 dB
? Output Common-Mode Control
? Power Supply:
- Voltage: 3 V (±1.5 V) to 5 V (±2.5 V)
? Current: 37.7 mA
? Power-Down Capability: 0.65 mA