THS4509 (ACTIVE)

Wideband Operational Amplifier

 

Description

The THS4509 device is a wideband, fully-differential op amp designed for 5-V data acquisition systems. It has a low noise at 1.9 nV/√Hz, and 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 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 a minimum gain of 6 dB, but is optimized for gains 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 midsupply, with less than 4-mV differential offset voltage. The common-mode set point is set to midsupply by internal circuitry, which may be overdriven from an external source.

The input and output are optimized for best performance with the common-mode voltages set to midsupply. Along with high performance at low power-supply voltage, this design makes it ideal for high-performance, single-supply 5-V data acquisition systems. The combined performance of the THS4509 in a gain of 10 dB driving the ADS5500 ADC, sampling at 125 MSPS, is 81-dBc SFDR and 69.1-dBc SNR with a –1 dBFS signal at 70 MHz.

The THS4509 is offered in a quad, leadless VQFN-16 package (RGT), and is characterized for operation over the full industrial temperature range from –40°C to +85°C.

Features

  • Fully-Differential Architecture
  • Centered Input Common-Mode Range
  • Output Common-Mode Control
  • 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
  • OIP3: 37 dBm at 70 MHz
  • Input Voltage Noise: 1.9 nV/√Hz (f > 10 MHz)
  • Power-Supply Voltage: 3 V to 5 V
  • Power-Supply Current: 37.7 mA
  • Power-Down Current: 0.65 mA
  • APPLICATIONS
    • 5-V Data Acquisition Systems High Linearity ADC Amplifiers
    • Wireless Communication
    • Medical Imaging
    • Test and Measurement

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Parametrics Compare all products in High-Speed Op Amps (GBW>=50MHz)

 
Architecture
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)
Vn at 1kHz (Typ) (nV/rtHz)
Iq per channel (Typ) (mA)
Vos (Offset Voltage @ 25C) (Max) (mV)
Rail-to-Rail
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
CMRR (Typ) (dB)
Input Bias Current (Max) (pA)
Offset Drift (Typ) (uV/C)
GBW (Typ) (MHz)
Output Current (Typ) (mA)
2nd Harmonic (dBc)
3rd Harmonic (dBc)
@ MHz
THS4509 THS4508 THS4511 THS4513
Fully Differential    Fully Differential    Fully Differential
Voltage FB   
Voltage FB   
1    1    1    1   
3    3.75    3.75    3   
5.25    5.25    5.25    5.5   
2000    2000    1600    1600   
2    2    1    1   
6600    6400    4900    5100   
1.9    2.3    2    2.2   
10    2.3    20    27   
37.7    39.2    39.2    37.7   
4    4    4    4   
No    In to V-    In to V-    No   
Shutdown    Shutdown    Shutdown    Shutdown   
Catalog    Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 85   
VQFN    VQFN    VQFN    VQFN   
16VQFN: 9 mm2: 3 x 3(VQFN)    16VQFN: 9 mm2: 3 x 3(VQFN)    16VQFN: 9 mm2: 3 x 3(VQFN)    16VQFN: 9 mm2: 3 x 3(VQFN)   
90    90    90    90   
15500000    15500000    15500000    15500000   
2.6    2.3    2.3    2.6   
3000    3000    2000    2800   
96    96    96    96   
104    104    117    110   
108    105    106    108   
10    10    10    10   

Other qualified versions of THS4509

Version Part Number Definition
Automotive THS4509-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects