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THS4531A_16 Datasheet, PDF (1/59 Pages) Texas Instruments – Ultra Low-Power, Rail-to-Rail Output, Fully Differential Amplifier | |||
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THS4531A
SLOS823C â DECEMBER 2012 â REVISED JANUARY 2016
THS4531A Ultra Low-Power, Rail-to-Rail Output, Fully Differential Amplifier
1 Features
â¢1 Ultra Low-Power:
â Voltage: 2.5 V to 5.5 V
â Current: 250 µA
â Power-Down Mode: 0.5 µA (Typical)
⢠Fully Differential Architecture
⢠Bandwidth: 36 MHz (Av = 1 V/V)
⢠Slew Rate: 200 V/µs
⢠THD: â120 dBc at 1 kHz (1 VRMS, RL= 2 kâ¦)
⢠Input Voltage Noise: 10 nV/âHz (f = 1 kHz)
⢠High DC Accuracy:
â VOS: ±100 µV
â VOS Drift: ±3 µV/ËC (â40°C to +125°C)
â 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)
2 Applications
⢠Low-Power SAR, ÎΣ ADC Driver
⢠Low-Power, High Performance:
â Differential-to-Differential Amplifier
â Single-Ended to Differential Amplifier
⢠Low-Power, Wide-Bandwidth Differential Driver
⢠Low-Power, Wide-Bandwidth Differential Signal
Conditioning
⢠High-Channel Count and Power Dense Systems
3 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 (ÎΣ) 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm à 3.91 mm
THS4531A
VSSOP (8)
3.00 mm à 3.00 mm
WQFN (10)
2.00 mm à 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
1-kHz FFT Plot on Audio Analyzer
0
â10
â20
â30
â40
â50
â60
â70
â80
â90
â100
â110
â120
â130
â140
0
VS = 5 V
G = 1 V/V
VOUT = 1 VRMS
RF = 2 kâ¦
RL = 600 â¦
5k
10k
15k
20k
24k
Frequency (Hz)
G071
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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