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.

• Qualified for Automotive Applications
• Fully Differential Architecture
• Centered Input Common-Mode Range
• Minimum Gain of 2V/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>10MHz)
• 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

• Number of channels (#)
• 1
• Total supply voltage (Min) (+5V=5, +/-5V=10)
• 3
• Total supply voltage (Max) (+5V=5, +/-5V=10)
• 5.25
• BW @ Acl (MHz)
• 2000
• Acl, min spec gain (V/V)
• 2
• Slew rate (Typ) (V/us)
• 6600
• Architecture
• Fully Differential ADC Driver, Bipolar
• Vn at flatband (Typ) (nV/rtHz)
• 1.9
• Iq per channel (Typ) (mA)
• 37.7
• Rail-to-rail
• No
• Vos (offset voltage @ 25 C) (Max) (mV)
• 4
• Operating temperature range (C)
• -40 to 125
• Output current (Typ) (mA)
• 96
• TI functional safety category
• Functional Safety-Capable
• 2nd harmonic (dBc)
• 104
• 3rd harmonic (dBc)
• 108
• @ MHz
• 10
• GBW (Typ) (MHz)
• 3000
• Input bias current (Max) (pA)
• 18500000
• Features
• Shutdown, Decompensated
• CMRR (Typ) (dB)
• 90
• Rating
• Automotive

THS4509-Q1的完整型号有：THS4509QRGTRQ1，以下是这些产品的关键参数及官网采购报价：

THS4509QRGTRQ1，工作温度：-40 to 125，封装：VQFN (RGT)-16，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网THS4509QRGTRQ1的批量USD价格：3.998（1000+）

THS4509 PSpice Model (Rev. D)

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TINA-TI — 基于 SPICE 的模拟仿真程序

TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能，允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。

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