AD4084

RECOMMENDED FOR NEW DESIGNS

16-Bit, 20 MSPS, Differential SAR ADC

Data Sheet (Rev. 0) Product Selection Table

Part Models: 3
1ku List Price: Starting From $27.55

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Part Details

High performance
- Throughput: 20MSPS, 78.13ns conversion latency
- INL: ±6ppm (typical), ±10ppm (maximum)
- Dynamic range: 93.1dBFS
- SNR/THD
  - 92.6dB (typical)/−115.2dB (typical) at f_IN = 1kHz
  - 92.4dB (typical)/-103.5dB (typical) at f_IN = 1MHz
- Noise spectral density: −163dBFS/Hz
- 16-bit resolution, no missing codes
Low power
- 66.8mW typical at 20MSPS with −0.5dBFS sine-wave input
Easy Drive, fully differential input
- 6V p-p differential input range
- Continuous signal acquisition
- Linearized, 5μA/MSPS input current
Integrated, low-drift reference buffer and decoupling

Integrated V_CM generation
Digital features and data interface
- Conversion result FIFO, 16K sample depth
- Digital averaging filter with up to 2¹⁰ decimation
SPI configuration
Configurable data interface
- Single lane, DDR, serial LVDS, 320Mbps per lane
- Dual lane, DDR, serial LVDS, 160Mbps per lane
- Single/quad lane SPI data interface
Package
- 49-ball, 5mm × 5mm CSP_BGA, 0.65mm pitch
- Integrated supply decoupling capacitors
Operating temperature range: −40°C to +85°C

Part Models: 3
1ku List Price: Starting From $27.55

Documentation

Data Sheet 1

AD4084: 16-Bit, 20 MSPS, Differential SAR ADC Data Sheet (Rev.0) 07/29/2025

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
AD4084BBCZ	CHIP SCALE BGA	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD4084BBCZ-RL	CHIP SCALE BGA	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD4084BBCZ-RL7	CHIP SCALE BGA	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
LDO Linear Regulators 6
LT3045	RECOMMENDED FOR NEW DESIGNS	20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator
ADP150	PRODUCTION	Ultralow Noise, 150 mA CMOS Linear Regulator
ADP7182	RECOMMENDED FOR NEW DESIGNS	–28 V, −200 mA, Low Noise, Linear Regulator
ADP7118	RECOMMENDED FOR NEW DESIGNS	20 V, 200 mA, Low Noise, CMOS LDO Linear Regulator

MAX38912	RECOMMENDED FOR NEW DESIGNS	11µV_RMS Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode
LT3093	RECOMMENDED FOR NEW DESIGNS	–20V, 200mA, Ultralow Noise, Ultrahigh PSRR Negative Linear Regulator
Power System Management (PSM) & Sequencers 1
ADM1085	PRODUCTION	Voltage Sequencer with Active High, Open-Drain Enable Output
Supervisory Circuits & Reset ICs 1
MAX16061	RECOMMENDED FOR NEW DESIGNS	1% Accurate, Quad-/Hex-/Octal-Voltage µP Supervisors
Switching Regulators & Controllers 2
LT8604/ LT8604C		High Efficiency 42V/120mA Synchronous Bucks
LT8606 LT8606B		42V, 350mA Synchronous Step-Down Regulator with 2.5μA Quiescent Current

Tools & Simulations

IBIS Model 1

AD408x IBIS Model

Evaluation Kits

Evaluating the AD4080/AD4081/AD4084 20-Bit/16-Bit, 40/20 MSPS, Differential SAR ADC

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Features and Benefits

Full featured evaluation board for the AD4080/AD4081/AD4084
Analysis | Control | Evaluation (ACE) Software plug-in available for device configuration, data capture, and performance evaluation
Flexible analog front end
On-board power solution and precision reference
On-board clock generation circuitry with sampling frequency control via the ACE Software
FMC compatible

Product Details

The EVAL-AD4080-FMCZ is designed to demonstrate the performance of the AD4080/AD4081/AD4084 analog‐to‐digital converter (ADC) and provide access to a limited set of features from the chip in the ACE Software environment. The EVAL-AD4080-FMCZ evaluation kit supports the following AD4080/AD4081/AD4084 features:

Low voltage digital signaling (LVDS) data output interface.
ADC configuration via serial peripheral interface (SPI).
Internal or external generation of 1.1 V regulated supply rails.
Sampling rate capability between 1.25 MSPS and up to 40 MSPS, depending on the specific ADC.

The EVAL-AD4080-FMCZ evaluation board was designed for use with the Digilent ZedBoard via the field programmable gate array (FPGA) mezzanine card (FMC) connector. The ZedBoard uses a Xilinx Zynq7000 system on chip (SoC) that runs Analog Devices, Inc., Kuiper Linux and LIBIIO included on the SD card supplied in the evaluation board kit to facilitate communication with the EVALAD4080-FMCZ, enabling ADC configuration and data capture. The ZedBoard also provides the communication link to the host PC and the ACE Software plug-in.

The AD4080/AD4081/AD4084 that is physically mounted on the board can be evaluated with any sampling frequency range from 1.25MHz to 40MHz. However, performance of the AD4081 and AD4084 can also be evaluated using this board by selecting the sampling frequency to 20MHz. Note, results for AD4081 and AD4084 should only be taken as indications of the SNR rather than the actual measurement, nevertheless, measured SNR for the AD4081 wont be worse than expected one. This evaluation board - EVAL-AD4080-FMCZ will only serve as a temporary evaluation solution for the AD4084. For proper evaluation of the aD4084 there will be a designated evaluation board in near future.