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- Precision attenuation: G = 0.4, G = 0.8
- Fully differential or single-ended input/output
- Differential output designed to drive precision ADCs
- Drives switched capacitor and Σ-Δ ADCs
- Rail-to-rail output
- VOCM pin adjusts output common-mode voltage
- Robust overvoltage protection up to ±15 V (VS = +5 V)
- Single supply: 3 V to 10 V
- Dual supplies: ±1.5 V to ±5 V
- High performance
- Suited for driving 18-bit converters up to 4 MSPS
- 10 nV/√Hz output noise
- 3 ppm/°C gain drift
- 500 μV maximum output offset
- 50 V/μs slew rate
- Low power: 3.2 mA supply current
The AD8475 is a fully differential, attenuating amplifier with integrated precision gain resistors. It provides precision attenuation (by 0.4 or 0.8), common-mode level shifting, and single-ended-to-differential conversion along with input overvoltage protection. Power dissipation on a single 5 V supply is only 16 mW.
The AD8475 is a simple to use, fully integrated precision gain block, designed to process signal levels of up to ±10 V on a single supply. It provides a complete interface to make industrial level signals directly compatible with the differential input ranges of low voltage high performance 16-bit or 18-bit single-supply successive approximation (SAR) analog-to-digital converters (ADCs).
The AD8475 comes with two standard pin-selectable gain options: 0.4 and 0.8. The gain of the part is set by driving the input pin corresponding to the appropriate gain.
The AD8475 also provides overvoltage protection from large industrial input voltages up to ±15 V while operating on a single 5 V supply. The VOCM pin adjusts the output voltage common mode for precision level shifting, to match the ADC’s input range and maximize dynamic range.
The AD8475 works extremely well with SAR, Σ-Δ, and pipeline converters. The high current output stage of the part allows it to drive the switched capacitor front-end circuits of many ADCs with minimal error.
Unlike many differential drivers in the market, the AD8475 is a high precision amplifier. With 500 μV maximum output offset, 10 nV/√Hz output noise, and −112 dB THD + N, the AD8475 pairs well with high accuracy converters. Considering its low power consumption and high precision, the slew-enhanced AD8475 has excellent speed, settling to 18-bit precision for 4 MSPS acquisition.
The AD8475 is available in a space-saving 16-lead 3 mm × 3 mm LFCSP package and a 10-lead MSOP package. It is fully specified over the −40°C to +85°C temperature range.
Applications
- ADC drivers
- Differential instrumentation amplifier building blocks
- Single-ended-to-differential converters
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AD8475
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
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AD8475ACPZ-R7 | 16-Lead LFCSP (3mm x 3mm w/ EP) |
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AD8475ACPZ-RL | 16-Lead LFCSP (3mm x 3mm w/ EP) |
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AD8475ACPZ-WP | 16-Lead LFCSP (3mm x 3mm w/ EP) |
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AD8475ARMZ | 10-Lead MSOP |
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AD8475ARMZ-R7 | 10-Lead MSOP |
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AD8475ARMZ-RL | 10-Lead MSOP |
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AD8475BRMZ | 10-Lead MSOP |
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AD8475BRMZ-R7 | 10-Lead MSOP |
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AD8475BRMZ-RL | 10-Lead MSOP |
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- AD8475ACPZ-R7
- Pin/Package Drawing
- 16-Lead LFCSP (3mm x 3mm w/ EP)
- Documentation
- HTML Material Declaration
- HTML Reliablity Data
- CAD Symbols, Footprints, and 3D Models
- Ultra Librarian
- SamacSys
- AD8475ACPZ-RL
- Pin/Package Drawing
- 16-Lead LFCSP (3mm x 3mm w/ EP)
- Documentation
- HTML Material Declaration
- HTML Reliablity Data
- CAD Symbols, Footprints, and 3D Models
- Ultra Librarian
- SamacSys
- AD8475ACPZ-WP
- Pin/Package Drawing
- 16-Lead LFCSP (3mm x 3mm w/ EP)
- Documentation
- HTML Material Declaration
- HTML Reliablity Data
- CAD Symbols, Footprints, and 3D Models
- Ultra Librarian
- SamacSys
- AD8475ARMZ
- Pin/Package Drawing
- 10-Lead MSOP
- Documentation
- HTML Material Declaration
- HTML Reliablity Data
- CAD Symbols, Footprints, and 3D Models
- Ultra Librarian
- SamacSys
- AD8475ARMZ-R7
- Pin/Package Drawing
- 10-Lead MSOP
- Documentation
- HTML Material Declaration
- HTML Reliablity Data
- CAD Symbols, Footprints, and 3D Models
- Ultra Librarian
- SamacSys
- AD8475ARMZ-RL
- Pin/Package Drawing
- 10-Lead MSOP
- Documentation
- HTML Material Declaration
- HTML Reliablity Data
- CAD Symbols, Footprints, and 3D Models
- Ultra Librarian
- SamacSys
- AD8475BRMZ
- Pin/Package Drawing
- 10-Lead MSOP
- Documentation
- HTML Material Declaration
- HTML Reliablity Data
- CAD Symbols, Footprints, and 3D Models
- Ultra Librarian
- SamacSys
- AD8475BRMZ-R7
- Pin/Package Drawing
- 10-Lead MSOP
- Documentation
- HTML Material Declaration
- HTML Reliablity Data
- CAD Symbols, Footprints, and 3D Models
- Ultra Librarian
- SamacSys
- AD8475BRMZ-RL
- Pin/Package Drawing
- 10-Lead MSOP
- Documentation
- HTML Material Declaration
- HTML Reliablity Data
- CAD Symbols, Footprints, and 3D Models
- Ultra Librarian
- SamacSys
Filter by Model
Part Models
Product Lifecycle
PCN
Apr 3, 2017
- 16_0230
Assembly Transfer of Select LFCSP Products to ASE Korea
AD8475ACPZ-R7
PRODUCTION
AD8475ACPZ-RL
PRODUCTION
Apr 28, 2014
- 13_0224
Assembly Transfer of Select 2x3 and 3x3mm LFCSP Products to STATS ChipPAC China.
AD8475ACPZ-R7
PRODUCTION
AD8475ACPZ-RL
PRODUCTION
Mar 22, 2021
- 21_0001
Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP
AD8475ARMZ
PRODUCTION
AD8475ARMZ-R7
PRODUCTION
AD8475ARMZ-RL
PRODUCTION
AD8475BRMZ
PRODUCTION
AD8475BRMZ-R7
PRODUCTION
AD8475BRMZ-RL
PRODUCTION
Oct 30, 2017
- 15_0176
Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines
AD8475ARMZ
PRODUCTION
AD8475ARMZ-R7
PRODUCTION
AD8475ARMZ-RL
PRODUCTION
AD8475BRMZ
PRODUCTION
AD8475BRMZ-R7
PRODUCTION
AD8475BRMZ-RL
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Apr 3, 2017
- 16_0230
Assembly Transfer of Select LFCSP Products to ASE Korea
AD8475ACPZ-R7
PRODUCTION
AD8475ACPZ-RL
PRODUCTION
Apr 28, 2014
- 13_0224
Assembly Transfer of Select 2x3 and 3x3mm LFCSP Products to STATS ChipPAC China.
AD8475ACPZ-R7
PRODUCTION
AD8475ACPZ-RL
PRODUCTION
Mar 22, 2021
- 21_0001
Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP
AD8475ARMZ
PRODUCTION
AD8475ARMZ-R7
PRODUCTION
AD8475ARMZ-RL
PRODUCTION
AD8475BRMZ
PRODUCTION
AD8475BRMZ-R7
PRODUCTION
AD8475BRMZ-RL
PRODUCTION
Oct 30, 2017
- 15_0176
Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines
AD8475ARMZ
PRODUCTION
AD8475ARMZ-R7
PRODUCTION
AD8475ARMZ-RL
PRODUCTION
AD8475BRMZ
PRODUCTION
AD8475BRMZ-R7
PRODUCTION
AD8475BRMZ-RL
PRODUCTION
Software & Part Ecosystem
Parts | Product Life Cycle | Description |
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PRODUCTION |
Low Power, Unity Gain Fully Differential Amplifier & ADC Driver |
Evaluation Kits 3
EVAL-AD8475
AD8475 Evaluation Board
Product Detail
The board provides the user flexibility to configure the AD8475 in the desired gain (0.4 or 0.8) and to install the suitable input and load impedances.
The AD8475-EVALZ board is designed for 8 lead MSOP so that a user can easily evaluate system performance when the AD8475 is mated with any Analog Devices, Inc., SAR ADC. The board can be installed with SMB connectors that mate directly to the Pulsar® Analog-to-Digital Converter Evaluation Kit. See AD8475 data sheet available on line.
EVAL-ADMX1001
Ultra-low Distortion Signal Generator Measurement Module with Fully Differential Input Acquisition Channel
Product Detail
The ADMX1001 is an ultra-low distortion sinewave and high-resolution arbitrary waveform generator with an acquisition channel. This high-performance module demonstrates a proprietary digital pre-distortion algorithm that reduces signal distortion below levels that can be achieved with high-performance digital-to-analog converters (DAC) and amplifiers alone. Its differential output can be set to common-mode levels often required to test high-performance analog-to-digital converters (ADC), audio codecs, and other audio ICs and systems. The signal generator and the acquisition channel can be individually controlled using separate, easy to use, SPI interfaces - combined with the module's small-form factor, the ADMX1001 can be easily embedded into test systems, or simply used on the bench for measurement and characterization.
APPLICATIONS
- High-end audio test
- Analog-to-digital converter characterization and test
- Sensor and transducer test
- Frequency response and network analysis
- ATE
EVAL-ADMX1002
Ultra-low Distortion Signal Generator Measurement Module
Product Detail
The ADMX1002 is an ultra-low distortion sinewave and high-resolution arbitrary waveform generator. This high-performance module demonstrates a proprietary digital pre-distortion algorithm that reduces signal distortion below levels that can be achieved with high-performance digital-to-analog converters (DAC) and amplifiers alone. Its differential output can be set to common-mode levels often required to test high-performance analog-to-digital converters (ADC), audio codecs, and other audio ICs and systems. With an easy-to-use SPI interface and small-form factor, the ADMX1002 can be easily embedded into test systems, or simply used on the bench for measurement and characterization.
APPLICATIONS
- High-end audio test
- Analog-to-digital converter characterization and test
- Sensor and transducer test
- Frequency response and network analysis
- ATE
Tools & Simulations 4
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
SPICE Model 1
ADI DiffAmpCalc™
Signal Chain Designer - BETA
Reference Designs 8
CN0385
Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals
CN0310
24-Bit, 250 kSPS Single-Supply Data Acquisition System
CN0240
Bidirectional Isolated High-Side Current Sense with 270 V Common-Mode Rejection
CN0272
2 MHz Bandwidth PIN Photodiode Preamp with Dark Current Compensation
CN0251
24-Bit, 4.7 Hz, 4-Channel Analog Data Acquisiton System
CN0345
Low Power, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial-Level Signals
CN0180
Precision, Low Power, Single-Supply, Fully Integrated Differential ADC Driver for Industrial-Level Signals
Reference Designs8
CN0385
Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals
CN0310
24-Bit, 250 kSPS Single-Supply Data Acquisition System
CN0240
Bidirectional Isolated High-Side Current Sense with 270 V Common-Mode Rejection
CN0272
2 MHz Bandwidth PIN Photodiode Preamp with Dark Current Compensation
CN0251
24-Bit, 4.7 Hz, 4-Channel Analog Data Acquisiton System
CN0345
Low Power, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial-Level Signals
CN0180
Precision, Low Power, Single-Supply, Fully Integrated Differential ADC Driver for Industrial-Level Signals
CN0269
18-Bit, 1.33 MSPS, 16-Channel Data Acquisition System