THS4511 1.6-GHz, Unity-Gain Stable,Wideband, Low Noise, Low Distortion Fully Differential Amplifier | TI.com

THS4511 (ACTIVE) 1.6-GHz, Unity-Gain Stable,Wideband, Low Noise, Low Distortion Fully Differential Amplifier

 

Description

The THS4511 is a wideband, fully-differential operational amplifier designed for single-supply 5-V data-acquisition systems. It has very low noise at 2 nV/√Hz, and extremely low harmonic distortion of –72 dBc HD2 and –87 dBc HD3 at 70 MHz with 2 VPP, G = 0 dB, and 200- load. Slew rate is very high at 4900 Vµs and with settling time of 3.3 ns to 1% (2 V step) it is ideal for pulsed applications. It is designed for minimum gain of 0 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 5-mV offset (typical) from the set voltage, when set within ±0.5 V of midsupply. The common-mode set point is set to midsupply by internal circuitry, which may be over-driven from an external source.

The THS4511 is a high-performance amplifier that has been optimized for use in 5-V single-supply data acquisition systems. The output has been optimized for best performance with its common-mode voltages set to midsupply, and the input has been optimized for performance over a wide range of common-mode input voltages. High performance at a low power-supply voltage enables single-supply 5-V data-acquisition systems while minimizing component count.

The THS4511 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.

Features

  • Fully-Differential Architecture
  • Common-Mode Input Range Includes the Negative Rail
  • Unity-Gain Stable
  • Bandwidth: 1.6 GHz (Gain = 0 dB)
  • Slew Rate: 4900 V/µs
  • 1% Settling Time: 3.3 ns
  • HD2: –72 dBc at 70 MHz
  • HD3: –87 dBc at 70 MHz
  • OIP2: 76 dBm at 70 MHz
  • OIP3: 42 dBm at 70 MHz
  • Input Voltage Noise: 2 nV/√Hz (f > 10 MHz)
  • Noise Figure: 21.8 dB (50- System, G = 6 dB)
  • Output Common-Mode Control
  • 5-V Power-Supply Current: 39.2 mA
  • Power-Down Capability: 0.65 mA
  • APPLICATIONS
    • 5-V Data-Acquisition Systems
    • High Linearity ADC Amplifiers
    • Wireless Communication
    • Medical Imaging
    • Test and Measurement

Parametrics

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Part number Order Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) BW @ Acl (MHz) Acl, min spec gain (V/V) Slew rate (Typ) (V/us) Vn at flatband (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Rail-to-rail Vos (offset voltage @ 25 C) (Max) (mV) Operating temperature range (C) Package Group Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) Package size: mm2:W x L (PKG) GBW (Typ) (MHz) Input bias current (Max) (pA) @ MHz CMRR (Typ) (dB)
THS4511 Order now 1     3.75     5.25     1600     1     4900     2     39.2     In to V-     4     -40 to 85     VQFN | 16     96     117     106     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     2000     15500000     10     90    
THS4508 Samples not available 1     3.75     5.25     2000     2     6400     2.3     39.2     In to V-     4     -40 to 85     VQFN | 16     96     104     105     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     3000     15500000     10     90    
THS4509 Order now 1     3     5.25     2000     2     6600     1.9     37.7     No     4     -40 to 85     VQFN | 16     96     104     108     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     3000     15500000     10     90    
THS4513 Order now 1     3     5.5     1600     1     5100     2.2     37.7     No     4     -40 to 85     VQFN | 16     96     110