Low-power, 60-MHz, wide-supply-range fully differential amplifier
Product details
Parameters
Package | Pins | Size
Features
- 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
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Description
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.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | THS4561 Low-Power, High Supply Range, 60-MHz, Fully Differential Amplifier datasheet (Rev. D) | Feb. 01, 2021 |
Application note | Differential input to differential output circuit using a fully-differential amp | Jan. 07, 2019 | |
Application note | Single-ended input to differential output circuit using a fully-differential amp | Jan. 07, 2019 | |
Application note | Attenuator Amplifier Design to Maximize the Input Voltage of Differential ADCs | Jun. 14, 2018 | |
User guide | THS4561 EVM User's Guide | Aug. 10, 2017 | |
Technical articles | How to minimize filter loss when you drive an ADC | Oct. 20, 2016 | |
Technical articles | Go differential to differentiate your precision design | Aug. 11, 2016 | |
Technical articles | How to use a fully differential amplifier as a level shifter | Jul. 13, 2016 | |
Technical articles | What you need to know about internal ESD protection on integrated circuits | Dec. 02, 2015 | |
Application note | Noise Analysis for High Speed Op Amps (Rev. A) | Jan. 17, 2005 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Configured for split-supply operation and easily modified for single supply
- Default gain of 1 configuration is easily reconfigured for other gains
- Designed for easy connection to standard 50-Ω input and output impedance test equipment
- Inputs and outputs include SMA connectors
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-01040 BOM.pdf (215KB) -
download TIDA-01040 Assembly Drawing.pdf (431KB) -
download TIDA-01040 PCB.pdf (5830KB) -
download TIDA-01040 CAD Files.zip (4178KB) -
download TIDA-01040 Gerber.zip (1352KB)
Design files
-
download TIDA-01041 BOM.pdf (213KB) -
download TIDA-01041 Assembly Drawing.pdf (497KB) -
download TIDA-01041 PCB.pdf (7425KB) -
download TIDA-01041 CAD Files.zip (24839KB) -
download TIDA-01041 Gerber.zip (1347KB)
Design files
-
download TIDA-01042 BOM.pdf (241KB) -
download TIDA-01042 Assembly Drawing.pdf (528KB) -
download TIDA-01042 PCB.pdf (7810KB) -
download TIDA-01042 CAD Files.zip (5259KB) -
download TIDA-01042 Gerber.zip (1270KB)
Design files
-
download TIDA-01057 BOM.pdf (123KB) -
download TIDA-01057 Assembly Drawing.pdf (983KB) -
download TIDA-01057 PCB.pdf (4279KB) -
download TIDA-01057 Altium.zip (30897KB) -
download TIDA-01057 Gerber.zip (2100KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
QFN (RUN) | 10 | View options |
VQFN (RGT) | 16 | View options |
VSSOP (DGK) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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