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Analog Devices Inc. AD4022BCPZ-R2
- Part No.:
- AD4022BCPZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-VFDFN Exposed Pad, CSP
- Datasheet:
-
AD4022BCPZ-R2.pdf
- Description:
- IC ADC 20BIT SAR 10LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:690
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Product details
Overview
AD4022BCPZ-R2 from Analog Devices is a 20-bit, 500 kSPS differential SAR ADC with Easy Drive architecture, operating from a single 1.8 V supply and supporting 2.4 V to 5.1 V external reference voltage. It delivers ±3.1 ppm INL, 100.5 dB SNR at 1 kHz, and 131 dB oversampled dynamic range (OSR = 1024), targeting precision data acquisition in battery-powered and industrial instrumentation systems.
For engineers reviewing the AD4022BCPZ-R2 datasheet, AD4022BCPZ-R2 pinout, AD4022BCPZ-R2 application, or AD4022BCPZ-R2 equivalent, key selection considerations include its 500 kSPS throughput, input overvoltage clamp (±50 mA), high-Z mode enabling direct drive from low-power amplifiers, and SPI/QSPI/MICROWIRE-compatible serial interface with 1.71–5.5 V logic flexibility.
Technical Context
The AD4022BCPZ-R2 implements a successive approximation register (SAR) architecture with integrated Easy Drive features: input current reduced to ≤1 µA at 500 kSPS, ≥77% acquisition phase occupancy, and first-conversion accuracy without pipeline latency. Its differential analog input supports ±VREF range with optional span compression for single-supply operation.
It integrates input overvoltage clamping (sinking up to 50 mA), a 20-bit no-missing-codes transfer function, and a flexible digital interface supporting 3-wire/4-wire SPI, daisy-chain mode, and status bit reporting - all configurable via CNV/SDI edge detection and compatible with 1.8 V to 5 V host logic through dedicated VIO supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 20-bit, guaranteed no missing codes - ensures full code coverage for high-fidelity measurement systems. |
| Throughput Rate | 500 kSPS - enables accurate capture of signals up to ~100 kHz bandwidth with oversampling capability. |
| INL Error | ±3.1 ppm max - supports <0.0003% end-point linearity error in precision sensor or calibration applications. |
| SNR | 100.5 dB at fIN = 1 kHz, VREF = 5 V - delivers sub-10 µVrms noise floor for low-level signal digitization. |
| Oversampled DR | 131 dB at OSR = 1024 - allows effective resolution enhancement to >21.5 bits in narrowband applications. |
| Input Clamp Current | 50 mA per input - protects against transient overvoltages without external diodes or layout overhead. |
| Power Dissipation | 5.7 mW at 500 kSPS with high-Z enabled - reduces thermal load and simplifies power budgeting in portable designs. |
Pinout & Package
AD4022BCPZ-R2 is housed in a 10-lead 3 mm × 3 mm LFCSP package with exposed pad (CP-10-9), rated for −40°C to +125°C operation. The exposed pad must be connected to GND for optimal thermal performance but is not required for electrical specification compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 REF | Analog 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 | 1.71–1.89 V supply; bypassed with 0.1 µF ceramic capacitor to GND for low-noise conversion. |
| 3 IN+ | Differential analog input (+) | Accepts input voltage from 0.1×VREF to 0.9×VREF when span compression enabled; supports ±VREF range otherwise. |
| 4 IN− | Differential analog input (−) | Paired with IN+; common-mode range centered at VREF/2 ±125 mV for optimal CMRR performance. |
| 5 GND | Power ground | Primary return path for VDD, REF, and analog inputs; must connect to low-impedance ground plane. |
| 6 CNV | Convert control input | Edge-triggered start of conversion; selects CS mode (SDI high) or daisy-chain mode (SDI low) on rising edge. |
| 7 SDO | Serial data output | 20-bit twos-complement result synchronized to SCK; tri-stated when CNV/SDI high in CS mode. |
| 8 SCK | Serial clock input | Drives data shift-out; minimum SCK period 12.3 ns (VIO > 1.7 V) supports ≤81.3 MHz operation. |
| 9 SDI | Serial data input | Configures interface mode and accepts 16-bit register writes in CS mode; used for daisy-chain data input. |
| 10 VIO | Digital I/O supply | Independent 1.71–5.5 V logic supply enabling interoperability with 1.8 V/2.5 V/3.3 V/5 V microcontrollers. |
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 ADC drivers. |
| Input overvoltage clamp | Sinks up to 50 mA per input while limiting REF disturbance - removes requirement for external protection diodes and preserves reference integrity. |
| Span compression | Shifts input range to 0.1×VREF to 0.9×VREF - enables full-scale digitization using only positive supply rails, avoiding negative amplifier supplies. |
| Flexible SPI interface | Supports 3-wire/4-wire, turbo/non-turbo, and daisy-chain modes with busy indicator - simplifies integration into resource-constrained or multi-ADC systems. |
| High-Z mode | Disables internal sampling capacitor switching during conversion - permits direct connection to low-power op-amps or passive filters without settling-time penalties. |
Applications
| Battery-Powered Precision Dataloggers | Industrial Process Monitoring |
|---|---|
|
Use Scenario: Continuous low-power monitoring of strain gauges, RTDs, or thermocouples in remote field sensors powered by Li-ion cells. IC Role / Device Role / Timing Role: High-resolution SAR ADC capturing slow-varying analog signals with minimal power draw and no external driver amplifiers. Use Value: 5.7 mW total power at 500 kSPS and 20-bit no-missing-codes performance extend battery life while maintaining metrology-grade accuracy. |
Use Scenario: Real-time acquisition of pressure, flow, and temperature signals in PLC analog input modules operating in harsh factory environments. IC Role / Device Role / Timing Role: Precision front-end converter with input overvoltage clamp and −40°C to +125°C rating for robust industrial signal conditioning. Use Value: 50 mA input clamp tolerance and guaranteed operation across extended temperature range reduce system-level protection and qualification effort. |
| Medical Patient Monitoring Equipment | Automated Test Equipment (ATE) |
|
Use Scenario: Digitizing ECG, EEG, or bioimpedance waveforms in portable diagnostic devices requiring low noise and high DC accuracy. IC Role / Device Role / Timing Role: Low-noise 20-bit ADC delivering 100.5 dB SNR and ±3.1 ppm INL for clinical-grade waveform fidelity. Use Value: Oversampled dynamic range of 131 dB (OSR = 1024) enables software-defined filtering to suppress mains interference without analog antialiasing complexity. |
Use Scenario: High-channel-count parametric test systems performing DC and AC characterization of semiconductor devices under test. IC Role / Device Role / Timing Role: Pin-compatible member of AD4003/AD4007/AD4011 family enabling scalable channel density with shared PCB layout and firmware. Use Value: 500 kSPS throughput with first-conversion accuracy and no pipeline delay ensures deterministic timing for synchronized multi-channel measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD4021BCPZ-R2 | 1 MSPS throughput, 8.3–13 mW power at same VDD/VIO, identical pinout and feature set. | Higher-speed sampling for faster transients or wider bandwidth requirements. | Select when system requires >500 kSPS but retains same precision, interface, and thermal profile. |
| AD4003BRMZ | 18-bit resolution, 1 MSPS, MSOP-10 package, lower INL (±1.5 ppm), no oversampled DR spec beyond 102 dB. | Cost-optimized precision acquisition where 18-bit resolution suffices and board space allows MSOP. | Choose for legacy MSOP footprint compatibility or when 18-bit performance meets accuracy targets with lower BOM cost. |
Compared with AD4022BCPZ-R2, AD4021BCPZ-R2 offers higher throughput at marginally increased power, while AD4003BRMZ trades 2 bits of resolution and oversampling capability for lower cost and MSOP availability - making each suitable for distinct trade-offs between speed, resolution, thermal envelope, and layout constraints.
Availability
AD4022BCPZ-R2 is available at Aetrix Electronics and suitable for battery-powered equipment, industrial process monitoring, and medical patient monitoring systems requiring stable component supply, long-term lifecycle support, and guaranteed −40°C to +125°C operation.
Supply support for AD4022BCPZ-R2 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 AD4022BCPZ-R2 belongs to the Easy Drive SAR ADC product line, engineered specifically for precision data acquisition systems where low power, high linearity, and simplified analog front-end design are critical.
FAQ
What is the maximum supported reference voltage for the AD4022BCPZ-R2?
The AD4022BCPZ-R2 supports an external reference voltage (VREF) from 2.4 V to 5.1 V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation at 5.0 V yields optimal SNR (100.5 dB) and oversampled dynamic range (131 dB at OSR = 1024); using 2.5 V reduces SNR to 94.7 dB but maintains full 20-bit no-missing-codes performance. The AD4022BCPZ-R2 does not regulate or buffer VREF - it must be supplied by a low-noise, well-decoupled source.
Does the AD4022BCPZ-R2 require an external ADC driver amplifier?
No, the AD4022BCPZ-R2's Easy Drive architecture eliminates the need for an external ADC driver in most cases. With input current reduced to ≤1 µA at 500 kSPS and an acquisition phase of 1770 ns, it can be driven directly by low-output-current amplifiers or even passive RC filters. High-Z mode further relaxes drive requirements by disabling internal sampling capacitor switching during conversion - a key advantage confirmed in the AD4022BCPZ-R2 datasheet Figure 2 and Applications Information section.
What digital interface modes does the AD4022BCPZ-R2 support?
The AD4022BCPZ-R2 supports multiple SPI-compatible interface modes selected via CNV and SDI edge detection: CS mode (3-wire or 4-wire, with or without busy indicator), turbo mode for maximum throughput, and daisy-chain mode for multi-ADC synchronization. All modes operate with 1.71–5.5 V logic levels via the independent VIO supply, and support standard SPI, QSPI, MICROWIRE, and DSP interfaces - as detailed in the Digital Interface and Register Read/Write sections of the AD4022BCPZ-R2 datasheet Rev. C.
How does the input overvoltage clamp function in the AD4022BCPZ-R2?
The AD4022BCPZ-R2 input overvoltage clamp activates when IN+ or IN− exceeds VREF by ~250 mV (e.g., 5.25 V threshold at VREF = 5 V), sinking up to 50 mA per input to protect internal circuitry. This clamping action minimizes disturbance on the REF pin and eliminates the need for external Schottky diodes. Deactivation occurs within 360 ns after overvoltage removal, ensuring fast recovery - specifications verified in Table 1 and Absolute Maximum Ratings of the AD4022BCPZ-R2 datasheet.
Is the AD4022BCPZ-R2 pin-compatible with other members of the AD40xx family?
Yes, the AD4022BCPZ-R2 is pin-compatible with the AD4003/AD4007/AD4011 family and shares identical 10-lead LFCSP (CP-10-9) and MSOP (RM-10) footprints. This enables drop-in replacement across resolution (16–20 bit), speed (500 kSPS–2 MSPS), and feature variants - a design continuity benefit explicitly stated in the Features section and Pin Configurations of the AD4022BCPZ-R2 datasheet.
AD4022BCPZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, CSP
- 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-LFCSP-WD (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD4022BCPZ-R2 FAQ
1.How can I place an order for AD4022BCPZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD4022BCPZ-R2 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 AD4022BCPZ-R2 reliable?
The price and inventory of AD4022BCPZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD4022BCPZ-R2 is usually 5 days.
3.What payment methods are accepted for AD4022BCPZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD4022BCPZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD4022BCPZ-R2?
AD4022BCPZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD4022BCPZ-R2 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 AD4022BCPZ-R2?
For technical support, including AD4022BCPZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD4022BCPZ-R2 requirements.
6.How does Aetrix verify that AD4022BCPZ-R2 is sourced from the original manufacturer or authorized distributors?
All AD4022BCPZ-R2 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 AD4022BCPZ-R2 meets industry standards.
7.What is the process for return or replacement of AD4022BCPZ-R2?
All AD4022BCPZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD4022BCPZ-R2, 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 AD4022BCPZ-R2 part is unused and in its original packaging.
Return procedure for AD4022BCPZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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