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Analog Devices Inc. AD4002BRMZ
- Part No.:
- AD4002BRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD4002BRMZ.pdf
- Description:
- IC ADC 18BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:423
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Product details
Overview
AD4002BRMZ from Analog Devices is a precision 18-bit, 2 MSPS pseudo-differential successive approximation register (SAR) analog-to-digital converter with Easy Drive input architecture, single 1.8 V supply operation, and SPI-compatible serial interface. It delivers ±3.2 LSB INL, 95 dB SNR at 1 kHz, and 98 dB oversampled dynamic range (OSR = 2), targeting high-accuracy data acquisition in space-constrained industrial and medical systems.
For engineers reviewing the AD4002BRMZ datasheet, AD4002BRMZ pinout, AD4002BRMZ application, or AD4002BRMZ equivalent, this page provides verified technical context, validated pin functions, real-world use scenarios, and confirmed alternative options for precision ADC selection in battery-powered, automated test, and instrumentation designs.
Technical Context
The AD4002BRMZ implements a true SAR architecture with no pipeline latency-first conversion is accurate and deterministic. Its Easy Drive input reduces kickback current to 0.5 μA/MSPS and extends acquisition time to ≥79% of cycle time at 1 MSPS, eliminating need for dedicated driver amplifiers in many configurations.
It supports pseudo-differential input operation over 0 V to VREF (2.4 V–5.1 V), includes input overvoltage clamp (±50 mA), span compression for single-supply compatibility, and flexible SPI/QSPI/MICROWIRE/DSP interface with 1.71 V–5.5 V VIO logic supply-enabling direct interfacing with low-voltage microcontrollers and isolated digital hosts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit, guaranteed no missing codes-ensures full code coverage without gaps in precision measurement systems. |
| Throughput Rate | 2 MSPS-supports accurate capture of signals up to 10 MHz bandwidth with minimal aliasing risk. |
| INL | ±3.2 LSB max-limits absolute error to < ±0.012% of full scale, critical for calibration-grade applications. |
| SNR | 95 dB at fIN = 1 kHz, VREF = 5 V-enables >15.8 effective number of bits (ENOB) in low-frequency precision sensing. |
| Power (2 MSPS) | 14 mW total (VDD + VIO + REF)-achieves high speed with ultra-low power, suitable for portable and thermally constrained designs. |
| Input Voltage Range | 0 V to VREF (2.4 V–5.1 V)-simplifies reference design and enables direct connection to rail-to-rail output amplifiers. |
| Operating Temp | −40°C to +125°C-qualified for harsh industrial and automotive under-hood environments. |
Pinout & Package
AD4002BRMZ is housed in a 10-lead MSOP package (3 mm × 4.90 mm) with exposed pad (EPAD) connected to GND. Pinout matches AD4003/AD4007/AD4011 family for layout reuse.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 REF | Reference Input | Accepts 2.4 V–5.1 V external reference; requires local 10 μF X7R decoupling to GND for stability. |
| 2 VDD | Analog Power Supply | 1.71 V–1.89 V single supply; bypassed with 0.1 μF ceramic capacitor to GND. |
| 3 IN+ | Pseudo-Differential Input (+) | Samples voltage differential vs. IN−; operates over −0.1 V to VREF + 0.1 V relative to GND. |
| 4 IN− | Analog Ground Sense | Provides remote sense point for analog ground; connects to system AGND or sensor return path. |
| 5 GND | Power Ground | Common return for VDD, REF, and analog circuitry; must be low-impedance plane connection. |
| 6 CNV | Convert Control Input | Edge-triggered start signal; selects CS or daisy-chain mode based on SDI state at rising edge. |
| 7 SDO | Serial Data Output | 18-bit straight-binary result synchronized to SCK falling edge; tri-stated when CNV/SDI high in CS mode. |
| 8 SCK | Serial Clock Input | Accepts up to 100 MHz clock (VIO ≥ 2.7 V); timing-critical for achieving 2 MSPS throughput. |
| 9 SDI | Serial Data Input / Mode Select | Configures interface mode (CS vs. daisy-chain) and accepts 16-bit register writes in CS mode. |
| 10 VIO | Digital I/O Supply | 1.71 V–5.5 V logic interface supply; enables interoperability with 1.8 V/3.3 V/5 V host processors. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive Input Architecture | Reduces input current to ≤1 μA at 2 MSPS and extends acquisition phase to 290 ns-eliminates need for high-speed op-amp drivers in most cases. |
| Input Overvoltage Clamp | Sinks up to ±50 mA on IN+/IN−-protects internal circuitry during transients and removes requirement for external clamping diodes. |
| Span Compression | Shifts input range to 0.1×VREF–0.9×VREF-enables full-scale conversion using only positive supplies, avoiding negative rail generation. |
| Oversampling Support | Delivers 125 dB dynamic range at OSR = 1024-enhances resolution for low-bandwidth DC or slow-slewing signals without hardware changes. |
| Low-Power Scalability | Consumes 70 μW at 10 kSPS and 14 mW at 2 MSPS-power scales linearly with throughput for optimal energy efficiency across operating modes. |
Applications
| Automated Test Equipment | Medical Instrumentation |
|---|---|
Use Scenario: High-channel-count parametric testing of semiconductor devices requiring sub-LSB repeatability and fast settling. IC Role / Device Role / Timing Role: Primary digitizer capturing voltage/current waveforms at 2 MSPS with deterministic latency and no pipeline delay. Use Value: First-conversion accuracy and 95 dB SNR enable reliable pass/fail decisions on low-amplitude test signals without post-processing correction. |
Use Scenario: Portable ECG and patient monitoring systems where size, battery life, and clinical-grade accuracy are jointly constrained. IC Role / Device Role / Timing Role: Front-end ADC converting amplified biopotential signals with minimal external components and no external driver stage. Use Value: Easy Drive architecture and 14 mW power at 2 MSPS allow continuous high-fidelity waveform capture for >24-hour battery operation. |
| Industrial Process Control | Precision Data Acquisition |
Use Scenario: Distributed sensor nodes in factory automation measuring temperature, pressure, and strain with 0.01% full-scale accuracy. IC Role / Device Role / Timing Role: Isolated analog input channel digitizing conditioned sensor outputs with integrated overvoltage protection. Use Value: ±50 mA input clamp and −40°C to +125°C rating ensure robust operation in electrically noisy, thermally variable environments. |
Use Scenario: Modular DAQ systems requiring multi-channel synchronization, high ENOB, and flexible reference configuration. IC Role / Device Role / Timing Role: Precision SAR ADC supporting daisy-chain mode for simultaneous sampling across multiple channels via shared SDO line. Use Value: Pin-compatible family alignment (AD4003/AD4007) allows scalable channel count expansion without PCB redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD4003BRMZ | Same 18-bit resolution and Easy Drive architecture, but rated for 1 MSPS maximum throughput and optimized for lower power at reduced speed. | Better suited for battery-powered sensors where 2 MSPS is unnecessary and 7 mW at 1 MSPS improves runtime. | Select AD4003BRMZ when system sampling rate ≤1 MSPS and thermal/power budget is tighter than AD4002BRMZ's 14 mW at full speed. |
| AD7606C-18 | 18-bit, 1 MSPS, simultaneous-sampling 8-channel ADC with integrated analog front end (PGA, anti-alias filter, reference); requires 5 V analog supply. | Targets multi-channel systems needing channel-to-channel isolation and built-in signal conditioning-not a drop-in replacement. | Choose AD7606C-18 when consolidating multiple single-ended inputs into one device and accepting larger footprint and higher supply complexity. |
Compared with AD4002BRMZ, AD4003BRMZ trades peak speed for lower power and cost in static or moderate-speed applications, while AD7606C-18 offers integrated multi-channel functionality at the expense of flexibility, board area, and single-supply simplicity.
Availability
AD4002BRMZ is available at Aetrix Electronics and suitable for automated test equipment, medical instrumentation, and precision data acquisition systems requiring stable component supply, long-term lifecycle support, and guaranteed −40°C to +125°C operation.
Supply support for AD4002BRMZ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA, with R&D and manufacturing infrastructure spanning North America, Europe, and Asia.
The AD4002BRMZ belongs to Analog Devices' Easy Drive precision SAR ADC product line, engineered specifically for high-resolution, low-power, and low-complexity signal chain architectures in industrial, medical, and test & measurement applications.
FAQ
What is the maximum sampling rate supported by the AD4002BRMZ?
The AD4002BRMZ supports a maximum throughput rate of 2 MSPS when turbo mode is enabled and the SCK clock frequency is ≥75 MHz (VIO ≥ 2.7 V). At lower SCK rates or in standard mode, achievable throughput drops to 1.75 MSPS or less, as specified in Table 4 of the datasheet. This 2 MSPS capability is exclusive to the AD4002 variant within the AD4002/AD4006/AD4010 family.
Does the AD4002BRMZ require an external driver amplifier?
No-the AD4002BRMZ features Easy Drive input architecture that reduces input current to ≤1 μA at 2 MSPS and extends acquisition time to 290 ns, enabling direct drive from low-output-impedance sources such as precision op-amps, resistive sensors, or filtered DAC outputs without an additional buffer stage. This eliminates driver-related errors, power, and board area in many precision applications.
What reference voltage range is compatible with the AD4002BRMZ?
The AD4002BRMZ accepts an external reference voltage (VREF) from 2.4 V to 5.1 V applied to the REF pin. The analog input range is 0 V to VREF in standard mode, or compressed to 0.1×VREF–0.9×VREF when span compression is enabled-allowing full-scale digitization using only a single positive supply without negative rail generation.
How does the input overvoltage clamp function on the AD4002BRMZ?
The AD4002BRMZ includes internal input overvoltage clamps on IN+ and IN− pins capable of sinking up to ±50 mA each. When input voltage exceeds VREF + 0.25 V (e.g., 5.25 V at VREF = 5 V), the clamp activates to protect the internal sampling capacitors and reference node. Deactivation occurs within 360 ns, minimizing disturbance to the REF pin and eliminating need for external Schottky diodes in most transient-prone environments.
Is the AD4002BRMZ pin-compatible with other members of its family?
Yes-the AD4002BRMZ is pin-compatible with the AD4003BRMZ, AD4006BRMZ, AD4007BRMZ, and AD4010BRMZ in both 10-lead MSOP and LFCSP packages. This allows direct substitution across speed grades (500 kSPS to 2 MSPS) and performance variants without PCB layout changes, simplifying design scalability and inventory management for multi-tier product families.
AD4002BRMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 18
- Sampling Rate (Per Second):
- 2M
- Number of Inputs:
- 1
- Input Type:
- Pseudo-Differential, Single Ended
- Data Interface:
- DSP, MICROWIRE™, QSPI™, and SPI™
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 1.71V ~ 1.89V
- Voltage - Supply, Digital:
- 1.71V ~ 5.5V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD4002BRMZ FAQ
1.How can I place an order for AD4002BRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD4002BRMZ 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 AD4002BRMZ reliable?
The price and inventory of AD4002BRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD4002BRMZ is usually 5 days.
3.What payment methods are accepted for AD4002BRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD4002BRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD4002BRMZ?
AD4002BRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD4002BRMZ 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 AD4002BRMZ?
For technical support, including AD4002BRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD4002BRMZ requirements.
6.How does Aetrix verify that AD4002BRMZ is sourced from the original manufacturer or authorized distributors?
All AD4002BRMZ 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 AD4002BRMZ meets industry standards.
7.What is the process for return or replacement of AD4002BRMZ?
All AD4002BRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD4002BRMZ, 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 AD4002BRMZ part is unused and in its original packaging.
Return procedure for AD4002BRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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