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Data sheet
THS4531A
- 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)
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.
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Evaluation board
THS4531ADGKEVM — THS4531ADGKEVM Evaluation Module
The THS4531ADGKEVM is designed to quickly and easily demonstrate the functionality and versatility of the amplifier. The EVM is ready to connect to power, signal source, and test instruments through the use of on-board connectors. The default amplifier configuration is single-ended input, (...)
User guide: PDF
Simulation model
THS4531A TINA-TI Reference Design (Rev. A)
SLOM352A.TSC (68 KB) - TINA-TI Reference Design
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool
TINA-TI — SPICE-based analog simulation program
TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
Reference designs
TIDA-00176 — Interface to Sin/Cos Encoders with High-Resolution Position Interpolation Reference Design
The TIDA-00176 reference design is an EMC compliant industrial interface to Sin/Cos position encoders. Applications include industrial drives, which require accurate speed and position control.
The design utilizes a 16-bit dual sample ADC with drop-in compatible 14- or 12-bit versions available, (...)
The design utilizes a 16-bit dual sample ADC with drop-in compatible 14- or 12-bit versions available, (...)
Reference designs
TIDA-00178 — Interface to a Sin/Cos Encoder with Sitara AM437x Reference Design
The TIDA-00178 reference design is an EMC compliant industrial interface to Sin/Cos position encoders. Applications include industrial drives, which require accurate speed and position control.
The design utilizes a 16-bit dual sample ADC with drop-in compatible 14- or 12-bit versions available, (...)
Reference designs
TIDA-00202 — Interface to a HIPERFACE Position Encoder Reference Design
The TIDA-00202 reference design implements an EMC compliant industrial hybrid analog and digital interface to a HIPERFACE position encoder. A 3.3V supply RS485 transceiver with IEC-ESD and IEC-EFT protection is used for the bidirectional parameter channel. For the analog sin/cos signal (...)
Reference designs
TIDA-00368 — Reference Design for Interfacing Current Output Hall Sensors and CTs with Differential ADC/MCU
This reference design provides interfacing current output Hall sensors and current transformers to differential ADC (standalone and integrated into MCU). The differential signal conditioning circuit is designed to measure motor current with an accuracy of ±0.5% across operating (...)
Reference designs
TIDA-00187 — Extending Rail-to-Rail Output Range for Fully Differential Amplifiers to Include True Zero Volts
Operational amplifiers (op amps) have been used for decades in signal conditioning circuits and measurement systems. An op amp that has an output spanning from negative to positive supply rail are generally referred to as rail-to-rail output (RRO) op amps. These devices have been used increasingly (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
| WQFN (RUN) | 10 | Ultra Librarian |
Ordering & quality
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Information included:
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