Home Amplifiers Fully differential amplifiers
Home
Amplifiers
Fully differential amplifiers

THS4561

ACTIVE

Low-power, 60-MHz, wide-supply-range fully differential amplifier

Order now
Data sheet

THS4561

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.85 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 BW at Acl (MHz) 60 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 230 Architecture Bipolar, Fully Differential ADC Driver Vn at flatband (typ) (nV√Hz) 4 Iq per channel (typ) (mA) 0.78 Rail-to-rail In to V-, Out Vos (offset voltage at 25°C) (max) (mV) 0.25 Operating temperature range (°C) -40 to 125 Iout (typ) (mA) 27 2nd harmonic (dBc) 117 3rd harmonic (dBc) 124 Frequency of harmonic distortion measurement (MHz) 0.1 GBW (typ) (MHz) 60 Input bias current (max) (pA) 600000 Features Shutdown CMRR (typ) (dB) 110 Rating Catalog
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.85 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 BW at Acl (MHz) 60 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 230 Architecture Bipolar, Fully Differential ADC Driver Vn at flatband (typ) (nV√Hz) 4 Iq per channel (typ) (mA) 0.78 Rail-to-rail In to V-, Out Vos (offset voltage at 25°C) (max) (mV) 0.25 Operating temperature range (°C) -40 to 125 Iout (typ) (mA) 27 2nd harmonic (dBc) 117 3rd harmonic (dBc) 124 Frequency of harmonic distortion measurement (MHz) 0.1 GBW (typ) (MHz) 60 Input bias current (max) (pA) 600000 Features Shutdown CMRR (typ) (dB) 110 Rating Catalog
VQFN (RGT) 16 9 mm² 3 x 3 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WQFN (RUN) 10 4 mm² 2 x 2
  • Bandwidth: 60 MHz (G = 1 V/V)
  • Slew Rate: 230 V/µs
  • Gain Bandwidth Product: 68 MHz
  • Voltage Noise:
    • 1/f Voltage Noise Corner: 8 Hz
    • Broadband Noise (≥ 500 Hz): 4 nV/√ Hz
  • Input Offset: ±250 µV (Maximum)
    • Drift: ±4 µV/°C (Maximum)
  • Supply Operating Range: 2.85 V to 12.6 V
  • Supply Current: 775 µA
  • Negative Rail Input (NRI)
  • Rail-to-Rail Output (RRO)
  • Very Low Harmonic Distortion:
    • HD2: –117 dBc at 2 VPP, 100 kHz
    • HD3: –124 dBc at 2 VPP, 100 kHz
  • 0.01% Settling (2-V Step): 90 ns
  • Bandwidth: 60 MHz (G = 1 V/V)
  • Slew Rate: 230 V/µs
  • Gain Bandwidth Product: 68 MHz
  • Voltage Noise:
    • 1/f Voltage Noise Corner: 8 Hz
    • Broadband Noise (≥ 500 Hz): 4 nV/√ Hz
  • Input Offset: ±250 µV (Maximum)
    • Drift: ±4 µV/°C (Maximum)
  • Supply Operating Range: 2.85 V to 12.6 V
  • Supply Current: 775 µA
  • Negative Rail Input (NRI)
  • Rail-to-Rail Output (RRO)
  • Very Low Harmonic Distortion:
    • HD2: –117 dBc at 2 VPP, 100 kHz
    • HD3: –124 dBc at 2 VPP, 100 kHz
  • 0.01% Settling (2-V Step): 90 ns

The THS4561 fully differential amplifier (FDA) offers a simple interface from single-ended sources to the differential output required by precision analog-to-digital converters (ADCs). Designed for a very low,8-Hz, 1/f voltage noise corner and low, 130-dB total harmonic distortion (THD) while consuming only a775-µA quiescent current, the THS4561 is well suited for power-sensitive data acquisition (DAQ) systems where high performance is required with the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) through the amplifier and ADC combination.

The THS4561 features the required negative rail input when interfacing a DC-coupled, ground-centered, source signal to a single-supply, differential-input ADC. Low DC error and drift terms support the emerging high-speed and high-resolution successive approximation register (SAR) and delta-sigma (ΔΣ) ADC input requirements. A 2.85-V to 12.6-V supply range with a flexible output common-mode setting with low headroom to the supplies supports a wide range of ADC input and digital-to-analog converter (DAC) output requirements.

The THS4561 device is characterized for operation from –40°C to +125°C.

The THS4561 fully differential amplifier (FDA) offers a simple interface from single-ended sources to the differential output required by precision analog-to-digital converters (ADCs). Designed for a very low,8-Hz, 1/f voltage noise corner and low, 130-dB total harmonic distortion (THD) while consuming only a775-µA quiescent current, the THS4561 is well suited for power-sensitive data acquisition (DAQ) systems where high performance is required with the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) through the amplifier and ADC combination.

The THS4561 features the required negative rail input when interfacing a DC-coupled, ground-centered, source signal to a single-supply, differential-input ADC. Low DC error and drift terms support the emerging high-speed and high-resolution successive approximation register (SAR) and delta-sigma (ΔΣ) ADC input requirements. A 2.85-V to 12.6-V supply range with a flexible output common-mode setting with low headroom to the supplies supports a wide range of ADC input and digital-to-analog converter (DAC) output requirements.

The THS4561 device is characterized for operation from –40°C to +125°C.
open-in-new Find other Fully differential amplifiers
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 11
Type Title Date
* Data sheet THS4561 Low-Power, High Supply Range, 60-MHz, Fully Differential Amplifier datasheet (Rev. D) PDF | HTML 01 Feb 2021
More literature PLC Analog Input Front-End Architectures PDF | HTML 31 Jul 2022
Circuit design Differential input to differential output circuit using a fully-differential amp 07 Jan 2019
Circuit design Single-ended input to differential output circuit using a fully-differential amp 07 Jan 2019
Application note Attenuator Amplifier Design to Maximize the Input Voltage of Differential ADCs 14 Jun 2018
EVM User's guide THS4561 EVM User's Guide 10 Aug 2017
Technical article How to minimize filter loss when you drive an ADC 20 Oct 2016
Technical article Go differential to differentiate your precision design 11 Aug 2016
Technical article How to use a fully differential amplifier as a level shifter 13 Jul 2016
Technical article What you need to know about internal ESD protection on integrated circuits 02 Dec 2015
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ADS127L21EVM-PDK — ADS127L21 evaluation module for ADC with easy-to-drive inputs and wideband or low-latency filters

The ADS127L21EVM-PDK is an evaluation platform for the ADS127L21 24-bit, high-speed custom-wide-bandwidth filter delta-sigma (ΔΣ) analog-to-digital converter (ADC). The evaluation kit includes the ADS127L21EVM board, the PHI controller board, and accompanying computer software that enables the (...)
User guide: PDF | HTML
Not available on TI.com
Evaluation board

THS4561DGKEVM — THS4561 evaluation module

The THS4561DGKEVM is an evaluation module (EVM) for the single THS4561 amplifier in the DGK (VSSOP-8) package. This EVM is designed to quickly and easily demonstrate the functionality and versatility of the amplifier. The THS4561DGKEVM is ready to connect to power, signal source, and test (...)
User guide: PDF
Not available on TI.com
Simulation model

Discrete Impedance Spectroscopy TINA-TI Reference Design (Single-Ended)

SBOMBM1.TSC (1083 KB) - TINA-TI Reference Design
Download
Simulation model

Impedance Spectroscopy TINA-TI Reference Design (Differential)

SBOMBM0.TSC (94 KB) - TINA-TI Reference Design
Download
Simulation model

THS4561 PSpice Model (Rev. D)

SBOMAE3D.ZIP (28 KB) - PSpice Model
Download
Simulation model

THS4561 TINA-TI Reference Design (Rev. D)

SBOMAE4D.TSC (35 KB) - TINA-TI Reference Design
Download
Simulation model

THS4561 TINA-TI Spice Model (Rev. D)

SBOMAE5D.ZIP (9 KB) - TINA-TI Spice Model
Download
Calculation tool

SBOR022 — TI FDA Calculator

Supported products & hardware

Supported products & hardware

Products
Fully differential amplifiers
LMH6550 — 400MHz, Differential, High Speed Op Amps LMH6551 — 370MHz, Differential, High Speed Op Amp LMH6552 — 1.5 GHz Fully Differential Amplifier LMH6553 — 900 MHz Fully Differential Amplifier with Output Limiting Clamp LMH6554 — 2.8 GHz Ultra Linear Fully Differential Amplifier LMP8350 — Ultra Low Distortion Fully Differential Precision ADC Driver with Selectable Power Modes OPA862 — 12.6V, Low-noise, single-ended-to-differential, high input impedance amplifier THS4120 — 3.3 V, 100 MHz, 43 V/us, Fully Differential CMOS Amplifier w/Shutdown THS4121 — 3.3 V, 100 MHz, 43 V/us, Fully Differential CMOS Amplifier THS4130 — 150MHz, Fully Differential Input/Output Low Noise Amplifier With Shutdown THS4131 — Fully Differential Input/Output Low Noise Amplifier THS4140 — 160MHz, Fully Differential Input/Output High Slew Rate Amplifier With Shutdown THS4141 — 160MHz, Fully Differential Input/Output High Slew Rate Amplifier THS4150 — 150MHz, Fully Differential Input/Output High Slew Rate Amplifier With Shutdown THS4151 — 150MHz, Fully Differential Input/Output High Slew Rate Amplifier THS4500 — 15V, High-Speed Fully Differential Amplifier with power-down THS4501 — High-Speed Fully Differential Amplifier, +/-5 V THS4503 — High-Speed Fully-Differential Amplifiers THS4504 — Wideband, Low Distortion Fully Differential Amplifier with Shutdown THS4505 — Wideband, Low-Distortion Fully Differential Amplifier THS4508 — Wideband Fully Differential Amplifier THS4509 — 1.9-GHz, Wideband, Low-Noise, Low-Distortion, Fully-Differential Amplifier THS4511 — 1.6-GHz, unity-gain stable, wideband, low-noise, low distortion fully differential amplifier THS4513 — 1.6-GHz, min gain 1-V/V, low-noise, low distortion fully differential amplifier THS4520 — Rail-to-Rail Output Wideband Fully Differential Amplifier THS4521 — Very low power rail-to-rail output fully differential amplifier THS4522 — Very low power dual channel rail-to-rail output fully differential amplifier THS4524 — Very low power quad channel rail-to-rail output fully differential amplifier THS4531 — Ultra low power 0.25mA, RRO, fully differential amplifier THS4531A — Ultra Low Power, RRO, Fully-Differential Amplifier THS4532 — Dual, Ultra low power 0.25mA, RRO, fully differential amplifier THS4541 — High-Speed Differential I/O Amplifier THS4551 — Low Noise, Precision, 150MHz, Fully Differential Amplifier THS4552 — Dual Channel, Low-Noise, Precision, 150-MHz, Fully Differential Amplifier THS4561 — Low-power, 60-MHz, wide-supply-range fully differential amplifier THS4567 — 220-MHz CMOS input fully differential amplifier with VICM and VOCM control THS770006 — High-Speed Fully Differential ADC Driver Amplifier with +6dB Fixed Gain
Audio op amps
OPA1637 — High-fidelity, high-voltage (36-V), low-noise (3.7-nV/rtHz) Burr-Brown™ audio fully-differential amp
Precision op amps (Vos<1mV)
THP210 — High precision (40-μV, 0.1μV/C), high-voltage (36-V), low-noise (3.7-nV/√Hz), fully-differential amp
RF FDAs
LMH3401 — 7-GHz, Ultra-Wideband, Fully Differential Amplifier LMH5401 — 8-GHz Ultra wideband fully differential amplifier
Download
Design tool

CIRCUIT060069 — Differential input to differential output circuit using a fully-differential amplifier

This design uses a fully-differential amplifier (FDA) as a differential input to differential output amplifier.
View options
Design tool

CIRCUIT060070 — Single-ended input to differential output circuit using a fully-differential amplifier

This design uses a fully-differential amplifier (FDA) as a single-ended input to differential output amplifier.
View options
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 (...)
Request
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
View options
Reference designs

TIDA-01040 — Battery Tester Reference Design for High Current Applications

Li-Ion battery formation and electrical testing require accurate voltage and current control, usually to better than ±0.05% over the specified temperature range.  This reference design proposes a solution for high-current (up to 50 A) battery tester applications supporting input (bus) (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01041 — Battery tester reference design for multi-phase high-precision 0.5 to 100 A battery formation

This reference design provides a multi-phase solution for a wide range of current battery test applications. Leveraging the dual phase buck/boost controller LM5170's daisy chain configuration gives the design the ability to achieve 100A charging/discharging rates. Utilizing high accuracy constant (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01042 — Modular battery tester reference design for 50-A, 100-A, and 200-A applications

This reference design provides a modular battery test solution allowing users to have the flexibility to test batteries at different current levels with one design. This design leverages the TIDA-01041 reference design by providing two 100-A battery testers that can work independently or be (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01057 — Reference Design Maximizing Signal Dynamic Range for True 10 Vpp Differential Input to 20 bit ADC

This reference design is designed for high performance data acquisition(DAQ) systems to improve the dynamic range of 20 bit differential input ADCs. Many DAQ systems require the measurement capability at a wide FSR (Full Scale Range) in order to obtain sufficient signal dynamic range. Many earlier (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
VQFN (RGT) 16 View options
VSSOP (DGK) 8 View options
WQFN (RUN) 10 View options
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos