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

THS4531A (ACTIVE)

Ultra Low Power, RRO, Fully-Differential Amplifier

 

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 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)
THS4531A THS4524 THS4541 THS4551 THS4552 THS4561
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    
0.25     1.14     10.1     1.35     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    
0.4     2     0.45     0.175     0.265     0.2    
-40 to 125     -40 to 85     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
QFN | 10
SOIC | 8
VSSOP | 8    
TSSOP | 38     QFN | 10
VQFN | 16    
QFN | 10
VQFN | 16
VSSOP | 8    
TSSOP | 16
WQFN | 24    
VQFN | 16
VSSOP | 8    
26     55     100     45     65     35    
129     133     140     128     128     110    
138     141     140     139     139     115    
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)    
38TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP | 38)     10QFN: 4 mm2: 2 x 2 (QFN | 10)
16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
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)    
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)    
27     95     850     135     135     60    
250000