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Analog Devices Inc. AD4022BRMZ-RL7
- Part No.:
- AD4022BRMZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD4022BRMZ-RL7.pdf
- Description:
- IC ADC 20BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,031
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Product details
Overview
AD4022BRMZ-RL7 from Analog Devices is a 20-bit, 500 kSPS differential successive approximation register (SAR) analog-to-digital converter with Easy Drive architecture. It operates from a single 1.8 V supply, supports external reference voltages from 2.4 V to 5.1 V, delivers ±3.1 ppm INL and 100.5 dB SNR at 1 kHz, and targets precision data acquisition in battery-powered instrumentation.
For engineers reviewing the AD4022BRMZ-RL7 datasheet, AD4022BRMZ-RL7 pinout, AD4022BRMZ-RL7 application, or AD4022BRMZ-RL7 equivalent, key selection considerations include guaranteed 20-bit no-missing-codes performance, input overvoltage clamp protection up to 50 mA, high-Z mode enabling direct drive from low-power amplifiers, and SPI/QSPI/MICROWIRE-compatible serial interface with 1.8 V–5 V logic support.
Technical Context
The AD4022BRMZ-RL7 implements a true SAR architecture with first-conversion accuracy and zero pipeline latency. Its Easy Drive input stage reduces dynamic input current to ≤1 µA at 500 kSPS and extends acquisition time to ≥77% of the conversion cycle-1770 ns-eliminating need for dedicated ADC drivers.
It features input span compression for single-supply operation, integrated input overvoltage clamps that sink up to 50 mA while minimizing REF pin disturbance, and a configurable serial interface supporting CS-mode (3-/4-wire) and daisy-chain modes with status bit reporting. Turbo mode enables full 500 kSPS throughput with minimal SCK requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 20-bit, guaranteed no missing codes - ensures full code coverage without gaps in precision measurement systems. |
| Throughput Rate | 500 kSPS - supports accurate capture of signals up to ~10 MHz bandwidth with oversampling capability. |
| INL Error | ±3.1 ppm max - corresponds to <±0.3 LSB error at 20 bits, critical for calibrated metrology-grade applications. |
| SNR | 100.5 dB at fIN = 1 kHz, VREF = 5 V - enables >16.7 effective number of bits (ENOB) in narrowband use cases. |
| Input Voltage Range | ±VREF (±5 V typical) - supports full-scale differential input swing without external level-shifting circuitry. |
| Power Dissipation | 5.1 mW at 500 kSPS (VDD only) - enables integration into thermally constrained, battery-operated systems. |
| Operating Temperature | −40°C to +125°C - qualified for industrial and automotive under-hood sensing environments. |
Pinout & Package
AD4022BRMZ-RL7 is housed in a 10-lead MSOP package (3 mm × 4.90 mm), RoHS-compliant, with exposed pad connected to GND for thermal and noise performance. Pin compatibility with AD4003/AD4007/AD4011 family simplifies migration across resolution/speed grades.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF | Analog reference input | Accepts 2.4 V–5.1 V external reference; requires local 10 µF X7R decoupling to GND for stability. |
| VDD | Analog power supply | 1.71 V–1.89 V single supply; bypassed with 0.1 µF ceramic capacitor to GND. |
| IN+, IN− | Differential analog inputs | Support ±VREF full-scale range; include internal overvoltage clamps sinking up to 50 mA. |
| GND | Power ground | Common return for analog and digital supplies; connects to PCB ground plane. |
| CNV | Convert control input | Edge-triggered start of conversion; selects interface mode (CS vs. daisy-chain) on rising edge. |
| SDO | Serial data output | 20-bit two's complement output synchronized to SCK; tri-state when CNV/SDI high in CS mode. |
| SCK | Serial clock input | Drives data shift-out; supports 1.8 V–5 V logic levels via separate VIO supply. |
| SDI | Serial data input | Mode selection (CS/daisy-chain) and register write path; sampled on CNV rising edge. |
| VIO | Digital I/O supply | Independent 1.71 V–5.5 V logic supply enabling interoperability with diverse host processors. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive input architecture | Reduces input current to ≤1 µA at 500 kSPS and extends acquisition phase to 1770 ns - eliminates need for high-output-current driver amplifiers. |
| Input overvoltage clamp | Sinks up to 50 mA per input while limiting REF pin disturbance - removes requirement for external Schottky diodes and simplifies front-end protection. |
| Span compression mode | Shifts input range to 0.1×VREF to 0.9×VREF - enables single-supply operation without negative rail generation for the driver amplifier. |
| Oversampled dynamic range | 131 dB at OSR = 1024 - enhances resolution for low-frequency sensor measurements without increasing base sampling rate. |
| High-Z input mode | Enables high-impedance sampling during acquisition - allows direct connection to high-output-impedance sources like piezoresistive sensors or RC-filtered signals. |
Applications
| Automated Test Equipment | Medical Data Acquisition |
|---|---|
Use Scenario: High-accuracy voltage/current measurement in modular PXI chassis with tight channel density constraints. IC Role / Device Role / Timing Role: Precision 20-bit digitizer capturing multi-channel sensor outputs at 500 kSPS with deterministic latency. Use Value: Easy Drive architecture reduces per-channel driver count and board area; 5.1 mW power enables fanless thermal design in dense rack units. | Use Scenario: Portable EEG/ECG monitor requiring low-noise, battery-efficient signal digitization over extended runtime. IC Role / Device Role / Timing Role: Primary analog front-end ADC converting conditioned biopotential signals with minimal external components. Use Value: Single 1.8 V supply and 83 µW standby power extend battery life; input clamp protects against electrode contact faults without added protection circuitry. |
| Precision Industrial Sensors | Battery-Powered Instrumentation |
Use Scenario: Wireless vibration sensor node measuring accelerometer outputs in harsh factory environments. IC Role / Device Role / Timing Role: Low-power, wide-temperature ADC interfacing with MEMS transducers and feeding data to ultra-low-power MCU. Use Value: −40°C to +125°C rating ensures reliability in uncontrolled enclosures; oversampling improves resolution for low-amplitude mechanical signatures. | Use Scenario: Handheld multimeter or calibration source needing traceable 20-bit linearity and long shelf life. IC Role / Device Role / Timing Role: Core metrology-grade ADC providing primary digitization path with guaranteed monotonicity and no missing codes. Use Value: ±3.1 ppm INL meets Class A portable instrument specifications; SPI interface simplifies isolation for safety-rated designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD4021BRMZ-RL7 | 1 MSPS throughput, identical 20-bit resolution, same package and pinout - higher speed but 8.3 mW power at 1 MSPS. | Preferred where system sampling rate exceeds 500 kSPS and timing budget permits higher power draw. | Select AD4021BRMZ-RL7 when oversampling headroom or faster transient capture is required without changing layout. |
| AD4003BRMZ-RL7 | 18-bit resolution, 1 MSPS, same Easy Drive features and 10-lead MSOP package - lower resolution but improved power efficiency (3.5 mW at 1 MSPS). | Suitable for cost-sensitive or power-constrained applications where 18-bit ENOB suffices. | Choose AD4003BRMZ-RL7 when system-level accuracy requirements allow 18-bit fidelity and lower BOM cost is prioritized. |
Compared with AD4021BRMZ-RL7, the AD4022BRMZ-RL7 trades speed for lower power and thermal load; versus AD4003BRMZ-RL7, it delivers two additional bits of resolution at modest power penalty - making it optimal for applications demanding verified 20-bit linearity without speed overhead.
Availability
AD4022BRMZ-RL7 is available at Aetrix Electronics and suitable for precision data acquisition systems, battery-powered medical devices, and industrial sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for AD4022BRMZ-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.
The AD402x family was designed specifically for high-accuracy, low-power, easy-to-drive precision data acquisition-targeting applications where traditional SAR ADCs demand complex driver stages and excessive power.
FAQ
What is the maximum recommended reference voltage for AD4022BRMZ-RL7?
The AD4022BRMZ-RL7 supports an external reference voltage (VREF) from 2.4 V to 5.1 V. Operation at 5.0 V is typical and enables full ±5 V differential input range and optimal SNR (100.5 dB). Exceeding 5.1 V violates absolute maximum ratings and may cause permanent damage to the REF pin or internal circuitry. Always decouple REF to GND with a 10 µF X7R ceramic capacitor placed adjacent to the AD4022BRMZ-RL7 package.
Does AD4022BRMZ-RL7 require an external driver amplifier?
No, the AD4022BRMZ-RL7 does not require an external driver amplifier in most configurations due to its Easy Drive input architecture. With input current reduced to ≤1 µA at 500 kSPS and acquisition time extended to 1770 ns, it can be driven directly by low-output-impedance sources such as op-amps with rail-to-rail output or even passive RC filters. However, for high-frequency or high-Z sources (e.g., piezoelectric sensors), a buffer may still be beneficial - the AD4022BRMZ-RL7 simplifies but does not eliminate all driver requirements.
How does the input overvoltage clamp function in AD4022BRMZ-RL7?
The AD4022BRMZ-RL7 integrates bidirectional input clamps on IN+ and IN− pins that activate when voltage exceeds VREF + 0.25 V (typical) or falls below GND − 0.1 V. Each clamp can safely sink up to 50 mA for ≤10 ms, protecting internal sampling capacitors and minimizing disturbance on the REF pin. This eliminates the need for external series resistors or Schottky diodes in many industrial and test equipment designs - a key advantage confirmed in the AD4022BRMZ-RL7 datasheet Figure 21 and Table 5 Absolute Maximum Ratings.
Can AD4022BRMZ-RL7 operate with a 3.3 V digital interface while using 1.8 V analog supply?
Yes, the AD4022BRMZ-RL7 supports independent analog and digital supplies: VDD = 1.8 V (1.71–1.89 V) powers the core ADC, while VIO = 1.71–5.5 V sets logic levels for SDI, SDO, SCK, and CNV. At VIO = 3.3 V, the device accepts standard 3.3 V CMOS input thresholds and drives 3.3 V–compatible outputs - enabling seamless interfacing with FPGAs, microcontrollers, or isolated digital hosts without level shifters. This dual-supply flexibility is explicitly specified in the Digital Inputs and Outputs sections of the AD4022BRMZ-RL7 datasheet.
Is AD4022BRMZ-RL7 pin-compatible with other members of the AD402x family?
Yes, AD4022BRMZ-RL7 shares identical 10-lead MSOP (RM-10) pinout and footprint with AD4020BRMZ-RL7 and AD4021BRMZ-RL7, as confirmed in Figures 3 and 4 and Table 7 of the AD4022BRMZ-RL7 datasheet. All three devices are also pin-compatible with the AD4003/AD4007/AD4011 family, allowing drop-in replacement within the same package variant - provided system firmware accounts for differences in throughput, power, and register configuration.
AD4022BRMZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 20
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Differential
- 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:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD4022BRMZ-RL7 FAQ
1.How can I place an order for AD4022BRMZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD4022BRMZ-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 AD4022BRMZ-RL7 reliable?
The price and inventory of AD4022BRMZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD4022BRMZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD4022BRMZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD4022BRMZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD4022BRMZ-RL7?
AD4022BRMZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD4022BRMZ-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 AD4022BRMZ-RL7?
For technical support, including AD4022BRMZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD4022BRMZ-RL7 requirements.
6.How does Aetrix verify that AD4022BRMZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD4022BRMZ-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 AD4022BRMZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD4022BRMZ-RL7?
All AD4022BRMZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD4022BRMZ-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 AD4022BRMZ-RL7 part is unused and in its original packaging.
Return procedure for AD4022BRMZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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