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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Analog Devices Inc. AD7988-5BCPZ-RL7

Name: AD7988-5BCPZ-RL7
Brand: Analog Devices Inc.
SKU: AD7988-5BCPZ-RL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AD7988-5BCPZ-RL7

Manufacturer:: Analog Devices Inc.

Category:: Analog to Digital Converters (ADC)

Package:: 10-VFDFN Exposed Pad, CSP

Datasheet:: AD7988-5BCPZ-RL7.pdf

Description:: IC ADC 16BIT SAR 10LFCSP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AD7988-5BCPZ-RL7 from Analog Devices is a 16-bit, pseudo-differential successive approximation register (SAR) analog-to-digital converter with 500 kSPS throughput, 91.5 dB SNR at 10 kHz input, ±1.25 LSB INL max, and single 2.5 V supply operation. It features zero-latency architecture, SPI-/QSPI™-/MICROWIRE™-/DSP-compatible serial interface, and operates across −40°C to +125°C for high-precision data acquisition in harsh environments.

For engineers reviewing the AD7988-5BCPZ-RL7 datasheet, AD7988-5BCPZ-RL7 pinout, AD7988-5BCPZ-RL7 application, or AD7988-5BCPZ-RL7 equivalent, key selection criteria include throughput vs. power trade-off (3.5 mW total at 500 kSPS), reference voltage flexibility (2.4 V–5.1 V), daisy-chain capability, and LFCSP-10 thermal performance (θJC = 15°C/W).

Technical Context

The AD7988-5BCPZ-RL7 implements a true SAR conversion architecture with internal track-and-hold, sampling on the rising edge of CNV. Its zero-latency design ensures immediate availability of conversion results without pipeline delay, critical for real-time control loops.

It supports two interface modes-CS mode (3- or 4-wire) and chain mode-via SDI logic level at CNV edge, enabling flexible integration with microcontrollers, DSPs, or multi-ADC systems. The separate VIO supply (1.71 V–5.5 V) allows interoperability with 1.8 V/2.5 V/3 V/5 V logic families without level shifters.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	16-bit with no missing codes - guarantees monotonicity and full code coverage over temperature.
Throughput	500 kSPS - enables high-speed sampling of transient signals in automated test equipment and machine monitoring.
SNR	91.5 dB at fIN = 10 kHz, VREF = 5 V - supports >15 ENOB for precision DC and low-frequency AC measurements.
INL	±1.25 LSB maximum - ensures <0.002% gain error contribution in closed-loop sensor feedback systems.
Power Dissipation	3.5 mW total at 500 kSPS - achieves 7.0 nJ/conversion efficiency for battery-sensitive portable instrumentation.
Analog Input Range	0 V to VREF (2.4 V–5.1 V) pseudo-differential - simplifies signal conditioning with single-ended driver amplifiers.
Operating Temperature	−40°C to +125°C - qualified for under-hood automotive, industrial motor control, and downhole sensing.

Pinout & Package

AD7988-5BCPZ-RL7 is housed in a 10-lead 3 mm × 3 mm LFCSP (CP-10-9) package with exposed pad connected to GND for thermal and noise performance. Package thermal resistance is θJA = 80°C/W and θJC = 15°C/W under JEDEC 2S2P PCB conditions.

Pin/Terminal	Circuit Role	Design Meaning
1 REF	Analog reference input	Accepts external 2.4 V–5.1 V reference; requires local 10 µF decoupling to GND for stability and noise rejection.
2 VDD	Analog power supply	2.375 V–2.625 V single supply; powers core ADC and internal reference buffer.
3 IN+	Pseudo-differential analog input	Input voltage measured relative to IN−; range = 0 V to VREF; high-impedance during acquisition (1 nA leakage).
4 IN−	Analog ground sense	Provides remote sensing point for analog ground return; minimizes common-mode error in noisy environments.
5 GND	Power ground	Common return for VDD, REF, and exposed pad; must be low-inductance connection to minimize switching noise coupling.
6 CNV	Convert trigger / interface mode select	Rising edge initiates sampling; logic level on SDI at CNV edge selects CS or chain mode for serial interface configuration.
7 SDO	Serial data output	16-bit straight-binary output synchronized to SCK falling edge; tri-state when CNV high in CS mode.
8 SCK	Serial clock input	Supports up to 50 MHz SCK (VIO > 4.5 V); timing validated down to 1.71 V logic for ultra-low-voltage host interfaces.
9 SDI	Serial data input / mode control	Determines interface mode (CS vs. chain); in chain mode, passes upstream data with 16-cycle delay for daisy-chaining.
10 VIO	Digital I/O power supply	Independent 1.71 V–5.5 V supply enables direct interfacing with mixed-voltage digital systems without level translation.

Key Features

Feature	Design Value
Zero-latency architecture	Conversion result available immediately after tCONV (1.2 μs for C grade); eliminates pipeline delay in closed-loop control.
Daisy-chain serial interface	SDI input enables cascading multiple AD7988-5BCPZ-RL7 devices on one SDO line, reducing host GPIO count and PCB routing complexity.
Wide reference voltage range	VREF = 2.4 V–5.1 V allows optimization of dynamic range and SNR for varying sensor output levels without external scaling.
Low power at high speed	3.5 mW total at 500 kSPS and 70 µW at 10 kSPS enables adaptive power management in portable or energy-constrained systems.
High-temperature operation	Specified performance from −40°C to +125°C with <±0.35 ppm/°C gain drift supports deployment in engine control units and industrial drives.

Applications

Automated Test Equipment	Data Acquisition Systems
Use Scenario: High-accuracy voltage/current measurement during functional testing of PCBAs with fast settling requirements. IC Role / Device Role / Timing Role: Primary digitizer capturing transient waveforms with 500 kSPS sustained rate and zero-latency response. Use Value: Enables sub-µs timing alignment between stimulus and capture, improving test coverage for high-speed digital ICs.	Use Scenario: Multi-channel synchronized sampling in environmental monitoring stations logging temperature, pressure, and humidity over extended periods. IC Role / Device Role / Timing Role: Precision front-end ADC providing 16-bit resolution and 91.5 dB SNR with minimal self-heating drift. Use Value: Delivers <0.002% INL error over full industrial temperature range, eliminating recalibration cycles in field-deployed units.
Medical Instruments	Machine Automation
Use Scenario: Patient vital sign monitoring (ECG, EEG) requiring low-noise, low-power analog front-end with clinical-grade accuracy. IC Role / Device Role / Timing Role: Signal digitizer operating from 2.5 V supply with 1.8 V logic compatibility for integration into ultra-low-power wearable platforms. Use Value: Achieves 91.5 dB SNR at 10 kHz while consuming only 3.5 mW, extending battery life without compromising diagnostic fidelity.	Use Scenario: Real-time position and current feedback in servo motor drives where deterministic latency impacts torque ripple and positioning jitter. IC Role / Device Role / Timing Role: High-speed sampling node feeding FPGA-based motion controller with guaranteed 1.2 μs conversion time (C grade). Use Value: Zero-latency architecture ensures phase-coherent sampling across multiple axes, reducing mechanical vibration in CNC and robotics applications.

Automated Test Equipment

Data Acquisition Systems

Use Scenario: High-accuracy voltage/current measurement during functional testing of PCBAs with fast settling requirements.

IC Role / Device Role / Timing Role: Primary digitizer capturing transient waveforms with 500 kSPS sustained rate and zero-latency response.

Use Value: Enables sub-µs timing alignment between stimulus and capture, improving test coverage for high-speed digital ICs.

Use Scenario: Multi-channel synchronized sampling in environmental monitoring stations logging temperature, pressure, and humidity over extended periods.

IC Role / Device Role / Timing Role: Precision front-end ADC providing 16-bit resolution and 91.5 dB SNR with minimal self-heating drift.

Use Value: Delivers <0.002% INL error over full industrial temperature range, eliminating recalibration cycles in field-deployed units.

Medical Instruments

Machine Automation

Use Scenario: Patient vital sign monitoring (ECG, EEG) requiring low-noise, low-power analog front-end with clinical-grade accuracy.

IC Role / Device Role / Timing Role: Signal digitizer operating from 2.5 V supply with 1.8 V logic compatibility for integration into ultra-low-power wearable platforms.

Use Value: Achieves 91.5 dB SNR at 10 kHz while consuming only 3.5 mW, extending battery life without compromising diagnostic fidelity.

Use Scenario: Real-time position and current feedback in servo motor drives where deterministic latency impacts torque ripple and positioning jitter.

IC Role / Device Role / Timing Role: High-speed sampling node feeding FPGA-based motion controller with guaranteed 1.2 μs conversion time (C grade).

Use Value: Zero-latency architecture ensures phase-coherent sampling across multiple axes, reducing mechanical vibration in CNC and robotics applications.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit SAR ADC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD7988-1BCPZ-RL7	100 kSPS throughput, 700 µW total power at 100 kSPS, identical pinout and interface.	Better suited for low-power, lower-bandwidth applications like portable sensors or battery-powered loggers.	Select AD7988-1BCPZ-RL7 when system sampling rate ≤100 kSPS and average power budget is <1 mW.
AD4008BCPZ-RL7	18-bit resolution, 1 MSPS, ±0.4 LSB INL max, 2.5 V–5 V supply, same LFCSP-10 package.	Targets higher-resolution applications such as precision weigh scales or calibration equipment where 16-bit is insufficient.	Choose AD4008BCPZ-RL7 when ENOB >15.5 bits is required and system can accommodate higher power (12 mW at 1 MSPS).

Compared with AD7988-1BCPZ-RL7, the AD7988-5BCPZ-RL7 delivers 5× higher throughput at 3.5 mW versus 0.7 mW - optimal for real-time control; versus AD4008BCPZ-RL7, it trades 2 bits of resolution for 3.5× lower power and proven robustness in high-EMI motor drive environments.

Availability

AD7988-5BCPZ-RL7 is available at Aetrix Electronics and suitable for automated test equipment, medical instruments, and machine automation requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for AD7988-5BCPZ-RL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with R&D and manufacturing operations worldwide.

The AD7988-5BCPZ-RL7 belongs to Analog Devices' precision SAR ADC product line, designed specifically for high-speed, low-power, wide-temperature industrial and instrumentation applications demanding metrology-grade accuracy without complex support circuitry.

FAQ

What is the maximum recommended reference voltage for AD7988-5BCPZ-RL7?

The AD7988-5BCPZ-RL7 supports an external reference voltage range of 2.4 V to 5.1 V. Operation at 5.0 V maximizes SNR (91.5 dB) and dynamic range (92 dB), while maintaining full 16-bit linearity. Exceeding 5.1 V violates absolute maximum ratings and may cause permanent damage to the REF pin.

Does AD7988-5BCPZ-RL7 support daisy-chaining with other ADCs?

Yes, AD7988-5BCPZ-RL7 supports daisy-chaining via its SDI input in Chain Mode. When SDI is low at the CNV rising edge, the device forwards upstream conversion data on SDO with a fixed 16-SCK-cycle delay, enabling synchronization of multiple AD7988-5BCPZ-RL7 devices on a single serial bus without additional CS lines.

What is the minimum logic voltage supported by AD7988-5BCPZ-RL7's VIO supply?

The AD7988-5BCPZ-RL7 supports VIO from 1.71 V to 5.5 V. At 1.71 V, SCK period increases to 22 ns minimum and setup/hold times widen (e.g., tSSDICNV = 18 ns), but full functionality-including CS and Chain Modes-is maintained, enabling direct interface with ultra-low-voltage microcontrollers.

How does the AD7988-5BCPZ-RL7 handle input overvoltage conditions?

AD7988-5BCPZ-RL7 specifies absolute maximum analog input limits of −0.1 V to VREF + 0.1 V on IN+, and −0.1 V to +0.1 V on IN−. Exceeding these ranges risks latch-up or parametric shift. External clamping diodes and series resistors are recommended for inputs exposed to transients beyond these bounds.

Is AD7988-5BCPZ-RL7 pin-compatible with AD7988-1BCPZ-RL7?

Yes, AD7988-5BCPZ-RL7 is pin-compatible with AD7988-1BCPZ-RL7 in both MSOP-10 and LFCSP-10 packages. They share identical pin functions, electrical interface specifications, and thermal characteristics - allowing drop-in replacement where higher throughput is needed without PCB redesign.

AD7988-5BCPZ-RL7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: PulSAR®

Package/Case:: 10-VFDFN Exposed Pad, CSP

Packaging:: Tape & Reel (TR)

Product Status:: Active

Number of Bits:: 16

Sampling Rate (Per Second):: 500k

Number of Inputs:: 1

Input Type:: Pseudo-Differential

Data Interface:: SPI, DSP

Configuration:: S/H-ADC

Ratio - S/H:ADC:: 1:1

Number of A/D Converters:: 1

Architecture:: SAR

Reference Type:: External

Voltage - Supply, Analog:: 2.375V ~ 2.625V

Voltage - Supply, Digital:: 2.375V ~ 2.625V

Features:: -

Operating Temperature:: -40°C ~ 125°C

Supplier Device Package:: 10-LFCSP-WD (3x3)

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

AD7988-5BCPZ-RL7 FAQ

1.How can I place an order for AD7988-5BCPZ-RL7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AD7988-5BCPZ-RL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AD7988-5BCPZ-RL7 reliable?

The price and inventory of AD7988-5BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7988-5BCPZ-RL7 is usually 5 days.

3.What payment methods are accepted for AD7988-5BCPZ-RL7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7988-5BCPZ-RL7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AD7988-5BCPZ-RL7?

AD7988-5BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AD7988-5BCPZ-RL7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AD7988-5BCPZ-RL7?

For technical support, including AD7988-5BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7988-5BCPZ-RL7 requirements.

6.How does Aetrix verify that AD7988-5BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?

All AD7988-5BCPZ-RL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7988-5BCPZ-RL7 meets industry standards.

7.What is the process for return or replacement of AD7988-5BCPZ-RL7?

All AD7988-5BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7988-5BCPZ-RL7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AD7988-5BCPZ-RL7 part is unused and in its original packaging.

Return procedure for AD7988-5BCPZ-RL7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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