THS4551 Low Noise, Precision, 150MHz, Fully Differential Amplifier | TI.com

THS4551 (ACTIVE)

Low Noise, Precision, 150MHz, Fully Differential Amplifier

 

Description

The THS4551 fully differential amplifier offers an easy interface from single-ended sources to the differential output required by high-precision analog-to-digital converters (ADCs). Designed for exceptional dc accuracy, low noise, and robust capacitive load driving, this device is well suited for data acquisition systems where high precision is required along with the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) through the amplifier and ADC combination.

The THS4551 features the negative rail input required when interfacing a dc-coupled, ground-centered, source signal to a single-supply differential input ADC. Very low dc error and drift terms support the emerging 16- to 20-bit successive-approximation register (SAR) input requirements. A wide-range output common-mode control supports the ADC running from 1.8-V to 5-V supplies with ADC common-mode input requirements from 0.7 V to greater than 3.0 V.

The THS4551 device is characterized for operation over the wide temperature range of –40°C to +125°C, and is available in 8-pin VSSOP, 16-pin VQFN, and 10-pin WQFN packages.



Features

  • Bandwidth: 150 MHz (G = 1 V/V)
  • Differential Output Slew Rate: 220 V/µs
  • Gain Bandwidth Product: 135 MHz
  • Negative Rail Input (NRI),
    Rail-to-Rail Output (RRO)
  • Wide Output Common-Mode Control Range
  • Single-Supply Operating Range: 2.7 V to 5.4 V
  • Trimmed-Supply Current: 1.37 mA at 5 V
  • 25°C Input Offset: ±175 µV (max)
  • Input Offset Voltage Drift: ±1.8 µV/°C (max)
  • Differential Input Voltage Noise: 3.3 nV/√Hz
  • HD2: –128 dBc at 2 VPP, 100 kHz
  • HD3: –139 dBc at 2 VPP, 100 kHz
  • < 50-ns Settling Time: 4-V Step to 0.01%
  • 18-Bit Settling Time: 4-V Step, < 500 ns

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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 1 kHz (Typ) (nV/rtHz)
Iq per channel (Typ) (mA)
Vos (offset voltage @ 25 C) (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
THS4551 THS4521 THS4531A THS4541 THS4552 THS4561
Bipolar
Fully Differential
Voltage FB    
Fully Differential     Fully Differential
Voltage FB    
Fully Differential     Bipolar
Fully Differential
Voltage FB    
Fully Differential    
1     1     1     1     2     1    
2.7     2.5     2.5     2.7     2.7     2.85    
5.4     5.5     5.5     5.4     5.4     12.6    
150     145     36     620     150     70    
1     1     1     1     1     1    
220     490     220     1500     220     130    
3.3     4.6     10     2.2     3.3     5    
3.3     5.2     10     8     3.3     5    
1.35     1.14     0.25     10.1     1.37     0.82    
0.175     2     0.4     0.45     0.265     0.2    
In to V-
Out    
In to V-
Out    
In to V-
Out    
In to V-
Out    
In to V-
Out    
In to V-
Out    
Small Size
Shutdown    
Shutdown     Small Size
Shutdown    
Small Size
Shutdown    
Shutdown     Shutdown    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 85     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
QFN | 10
VQFN | 16
VSSOP | 8    
SOIC | 8
VSSOP | 8    
QFN | 10
SOIC | 8
VSSOP | 8    
QFN | 10
VQFN | 16    
TSSOP | 16
WQFN | 24    
VSSOP | 8    
10QFN: 4 mm2: 2 x 2 (QFN | 10)
16VQFN: 9 mm2: 3 x 3 (VQFN | 16)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
10QFN: 4 mm2: 2 x 2 (QFN | 10)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
10QFN: 4 mm2: 2 x 2 (QFN | 10)
16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
24WQFN: 16 mm2: 4 x 4 (WQFN | 24)    
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
110     102