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 Fully differential amplifiers

 
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)
THS4551 THS4521 THS4531A THS4541 THS4552 THS4561
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    
1.35     1.14     0.25     10.1     1.37     0.82    
In to V-
Out    
In to V-
Out    
In to V-
Out    
In to V-
Out    
In to V-
Out    
In to V-
Out    
0.175     2     0.4     0.45     0.265     0.2    
-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    
VQFN | 16
VSSOP | 8    
45     55     26     100     65     35    
128     133     129     140     128     110    
139     141     138     140     139     115    
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: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
10QFN: 4 mm2: 2 x 2 (QFN | 10)
8SOIC: 19 mm2: 3.91 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)    
16VQFN: 9 mm2: 3 x 3 (VQFN | 16)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
135     95     27     850     135     60    
1500000