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

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)

View more

Parametrics Compare all products in High-Speed Op Amps (>=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 THS4521 THS4522 THS4524 THS4532 THS4541 THS4551
Fully Differential
Voltage FB   
Voltage FB    Voltage FB    Fully Differential
Voltage FB   
Fully Differential
Voltage FB   
Fully Differential
Voltage FB   
Bipolar
Fully Differential
Voltage FB   
1    1    2    4    2    1    1   
2.5    2.5    2.5    2.5    2.5    2.7    2.7   
5.5    5.5    5.5    5.5    5.5    5.4    5.4   
36    145    145    145    36    620    150   
1    1    1    1    1    1    1   
220    490    490    490    220    1500    220   
10    4.6    4.6    4.6    10    2.2    3.3   
10    5.2    5.2    5.2    10    33    3.3   
0.25    1.14    1.14    1.14    0.25    10.1    1.35   
0.4    2    2    2    0.4    0.45    0.175   
In to V-
Out   
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    Shutdown    Shutdown    Shutdown    Small Size
Shutdown   
Small Size
Shutdown   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 85    -40 to 85    -40 to 85    -40 to 125    -40 to 125    -40 to 125   
QFN
SOIC
VSSOP   
SOIC
VSSOP   
TSSOP    TSSOP    TSSOP    QFN
VQFN   
QFN
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)   
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
16TSSOP: 32 mm2: 6.4 x 5(TSSOP)    38TSSOP: 62 mm2: 6.4 x 9.7(TSSOP)    16TSSOP: 32 mm2: 6.4 x 5(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)   
116    102    102    102    116    100    110   
250000    900000    900000    900000    250000    13000000    1500000   
3    2    2    2    3    0.5    0.45   
27    95    95    95    27    850    135   
26    55    55    55    26    100    45   
129    133    133    133    128    140    128   
138    141    141    141    137    140    139   
0.001    0.001    0.001    0.001    0.01    0.1    0.1