THS4531A Ultra Low Power, RRO, Fully-Differential Amplifier | TI.com

THS4531A (ACTIVE)

Ultra Low Power, RRO, Fully-Differential Amplifier

Ultra Low Power, RRO, Fully-Differential Amplifier - THS4531A
 

Description

The THS4531A device is a low-power, fully differential amplifier with input common-mode range below the negative rail and rail-to-rail output. The device is designed for low-power data acquisition systems and high-density applications where power consumption and dissipation is critical.

The device features accurate output common-mode control that allows for DC coupling when driving analog-to-digital converters (ADCs). This control, coupled with the input common-mode range below the negative rail and rail-to-rail output, allows for easy interface from single-ended ground-referenced signal sources to successive-approximation registers (SARs), and delta-sigma (ΔΣ) ADCs using only single-supply 2.5-V to 5-V power. The THS4531A is also a valuable tool for general-purpose, low-power differential signal conditioning applications.

Features

  • Ultra Low-Power:
    • Voltage: 2.5 V to 5.5 V
    • Current: 250 µA
    • Power-Down Mode: 0.5 µA (Typical)
  • Fully Differential Architecture
  • Bandwidth: 36 MHz (Av = 1 V/V)
  • Slew Rate: 200 V/µs
  • THD: –120 dBc at 1 kHz (1 VRMS, RL= 2 kΩ)
  • Input Voltage Noise: 10 nV/√Hz (f = 1 kHz)
  • High DC Accuracy:
    • VOS: ±100 µV
    • VOS Drift: ±3 µV/°C (–40°C to +125°C)
    • AOL: 114 dB
  • Rail-to-Rail Output (RRO)
  • Negative Rail Input (NRI)
  • Output Common-Mode Control
  • 8-Pin SOIC (D) and VSSOP (DGK)
  • 10-Pin WQFN (RUN)

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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
THS4531A THS4524 THS4541 THS4551 THS4552 THS4561
Fully Differential
Voltage FB    
Fully Differential
Voltage FB    
Fully Differential
Voltage FB    
Bipolar
Fully Differential
Voltage FB    
Bipolar
Fully Differential
Voltage FB    
Fully Differential    
1     4     1     1     2     1    
2.5     2.5     2.7     2.7     2.7     2.85    
5.5     5.5     5.4     5.4     5.4     12.6    
36     145     620     150     150     70    
1     1     1     1     1     1    
220     490     1500     220     220     130    
10     4.6     2.2     3.3     3.3     5    
10     5.2     33     3.3     3.3     5    
0.25     1.14     10.1     1.35     1.37     0.82    
0.4     2     0.45     0.175     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
SOIC
VSSOP    
TSSOP     QFN
VQFN    
QFN
VQFN
VSSOP    
TSSOP
WQFN    
VQFN
VSSOP    
10QFN: 4 mm2: 2 x 2(QFN)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    
38TSSOP: 62 mm2: 6.4 x 9.7(TSSOP)     10QFN: 4 mm2: 2 x 2(QFN)
16VQFN: 9 mm2: 3 x 3(VQFN)    
10QFN: 4 mm2: 2 x 2(QFN)
16VQFN: 9 mm2: 3 x 3(VQFN)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    
16TSSOP: 32 mm2: 6.4 x 5(TSSOP)
24WQFN: 16 mm2: 4 x 4(WQFN)    
16VQFN: 9 mm2: 3 x 3(VQFN)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    
116     102     100     110     110     110    
250000     900000     13000000     1500000     1500000