THS4509 Wideband Operational Amplifier | TI.com

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 | 16     VQFN | 16     VQFN | 16     VQFN | 16    
16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
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