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Analog Devices Inc. AD7323BRUZ-REEL7
- Part No.:
- AD7323BRUZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7323BRUZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:859
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Product details
Overview
AD7323BRUZ-REEL7 from Analog Devices is a 4-channel, 12-bit plus sign successive approximation ADC with true bipolar input capability, software-selectable ranges (±10 V, ±5 V, ±2.5 V, 0 V to +10 V), 500 kSPS throughput, and integrated 2.5 V reference - used in industrial data acquisition systems requiring high-voltage analog signal digitization with channel sequencing.
For engineers reviewing the AD7323BRUZ-REEL7 datasheet, AD7323BRUZ-REEL7 pinout, AD7323BRUZ-REEL7 application, or AD7323BRUZ-REEL7 equivalent, key selection criteria include true differential/single-ended/pseudo-differential input configuration flexibility, iCMOS™ high-voltage tolerance (±16.5 V supplies), low-power 18 mW operation at full speed, and SPI-/QSPI™-/MICROWIRE™-compatible serial interface timing compliance.
Technical Context
The AD7323BRUZ-REEL7 implements a 13-bit SAR architecture with track-and-hold, channel sequencer, and programmable analog input structure supporting single-ended, true differential, and pseudo-differential modes per channel. Its iCMOS™ process enables ±16.5 V analog supply rails while maintaining CMOS logic compatibility via separate VDRIVE and VCC domains.
It features dual ground domains (AGND/DGND), internal/external reference selection via REFIN/OUT, and four power modes (Normal, Autostandby, Autoshutdown, Full Shutdown) with sub-µA quiescent current. Conversion is initiated by CS falling edge, with 16-bit serial output (leading zero, 2-bit channel ID, sign bit, 12 data bits) clocked on SCLK falling edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit plus sign (13-bit effective), enabling 8192 codes for differential mode or 4096 for single-ended - supports precise bipolar measurement without external sign extension logic. |
| Throughput Rate | 500 kSPS maximum - sufficient for real-time monitoring of motor currents, sensor arrays, or power quality waveforms sampled at Nyquist rates up to 250 kHz. |
| Analog Input Ranges | Software-selectable per channel: ±10 V, ±5 V, ±2.5 V, or 0 V to +10 V - eliminates need for external gain-switching circuitry in multi-range instrumentation. |
| Reference | Internal 2.5 V ±10 mV over temperature - provides stable conversion基准 without external reference component; supports external 2.5–3.0 V reference for extended input range (e.g., ±12 V with 3 V ref). |
| Power Dissipation | 18 mW at 500 kSPS (VDD/VSS = ±16.5 V, VCC/VDRIVE = 5.25 V) - enables thermally constrained designs such as portable test equipment or densely packed PLC I/O modules. |
| Full Power Bandwidth | 22 MHz at −3 dB - preserves fidelity of fast transients (e.g., switch-mode power supply ripple, encoder edge detection) without aliasing in baseband sampling. |
| Channel Isolation | −72 dB at 100 kHz - ensures minimal crosstalk between simultaneously monitored signals like phase voltages in 3-phase energy meters. |
Pinout & Package
AD7323BRUZ-REEL7 is housed in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch) with exposed pad for thermal enhancement. Pin assignments are validated per Analog Devices Rev. B datasheet Figure 3 and Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select | Active-low frame sync for serial interface; initiates conversion sequence and enables DOUT three-state output - must be held low for entire 16-SCLK read cycle. |
| DIN (Pin 2) | Data Input | Serial command input for register writes (control, range, sequence); latched on SCLK falling edge - used to configure input mode, range, and channel sequencing behavior. |
| DGND (Pins 3, 15) | Digital Ground | Return path for digital I/O (SCLK, DIN, DOUT, CS); must be tied to AGND within 0.3 V transient delta to prevent noise coupling into analog section. |
| AGND (Pin 4) | Analog Ground | Reference for analog inputs, REFIN/OUT, and internal ADC core; requires star grounding and separate PCB plane from DGND to maintain >72 dB channel isolation. |
| REFIN/OUT (Pin 5) | Reference I/O | Provides 2.5 V internal reference or accepts external 2.5–3.0 V reference; requires 680 nF decoupling capacitor to stabilize reference impedance (<7 Ω) and suppress switching noise. |
| VIN0–VIN3 (Pins 7–10) | Analog Inputs | Four multiplexed inputs configurable per channel as single-ended, true differential (e.g., VIN0/VIN1), or pseudo-differential - supports mixed-mode acquisition in one device. |
| VDD (Pin 11) | Positive Analog Supply | +12 V to +16.5 V rail powering analog front-end; enables ±10 V input range with ≥10 V headroom - must be decoupled locally to AGND with ≥10 µF ceramic + bulk capacitance. |
| VCC (Pin 12) | ADC Core Supply | +2.7 V to +5.25 V supply for SAR logic and digital interface; independent of VDRIVE - allows level-shifting between host controller and ADC logic domains. |
| VDRIVE (Pin 13) | I/O Voltage Reference | Defines logic threshold for DIN/DOUT/CS/SCLK (2.7–5.25 V); may differ from VCC but must not exceed VCC by >0.3 V - enables interfacing with 3.3 V microcontrollers while core runs at 5 V. |
| DOUT (Pin 14) | Data Output | Three-state serial output delivering 16-bit frame (zero + 2-bit channel ID + sign + 12-bit data) MSB-first on SCLK falling edge - requires pull-up if shared bus topology is used. |
| SCLK (Pin 16) | Serial Clock | Master-controlled clock (up to 10 MHz) driving both data transfer and internal conversion timing - duty cycle must be 50:50 when using 0 V to +10 V unipolar range at full speed. |
Key Features
| Feature | Design Value |
|---|---|
| iCMOS™ Process Integration | Enables ±16.5 V analog supply operation with 2.7–5.25 V digital I/O - eliminates external level shifters and high-voltage op-amps in industrial sensor interfaces. |
| Per-Channel Input Range Selection | Each of four inputs independently configured for ±10 V, ±5 V, ±2.5 V, or 0–10 V via Range Register - supports mixed-signal acquisition (e.g., thermocouple + RTD + voltage output sensor) without external scaling. |
| True Differential Input Capability | Hardware-supported differential pairs (e.g., VIN0–VIN1) with 76 dB SNR and −82 dB THD - rejects common-mode noise in motor drive current sensing or isolated power supply feedback loops. |
| Channel Sequencer with Auto-Rotation | Programmable sequence register cycles through up to 4 channels automatically - reduces host CPU overhead in continuous monitoring applications like predictive maintenance vibration analysis. |
| Low-Power Power-Down Modes | Autostandby (0.75 mA), Autoshutdown (1 µA), Full Shutdown (1 µA) - extends battery life in portable DAQ or enables rapid wake-up (<750 ns) for event-triggered sampling. |
Applications
| Industrial Process Monitoring | Energy Metering |
|---|---|
Use Scenario: Continuous acquisition of 4-channel analog sensor outputs (pressure, temperature, flow, level) in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC performing synchronized sampling across multiple industrial sensors with software-defined input ranges and channel sequencing. Use Value: Eliminates need for discrete range-switching circuitry and external references, reducing BOM count and PCB area in space-constrained DIN-rail mounted controllers. |
Use Scenario: Simultaneous voltage and current sampling across 3-phase AC lines in Class 0.5 smart electricity meters. IC Role / Device Role / Timing Role: High-accuracy, low-crosstalk ADC capturing true differential voltage/current waveforms with 22 MHz bandwidth to preserve harmonic content up to 50th order. Use Value: Achieves >75 dB SINAD at 50 kHz input frequency, meeting IEC 62053-22 accuracy requirements without post-processing calibration. |
| Motor Control Feedback | Test & Measurement Equipment |
Use Scenario: Real-time digitization of motor phase currents and DC bus voltage in servo drives with isolated gate drivers. IC Role / Device Role / Timing Role: Bipolar-input ADC accepting ±10 V isolated amplifier outputs and 0–10 V bus voltage, operating at 500 kSPS with <1.6 µs conversion time. Use Value: Enables closed-loop current control with <305 ns track-and-hold acquisition time, minimizing phase lag in field-oriented control algorithms. |
Use Scenario: Modular data acquisition card for benchtop oscilloscopes and automated test systems requiring flexible input configuration. IC Role / Device Role / Timing Role: Configurable front-end ADC supporting single-ended, differential, and pseudo-differential modes per channel to adapt to diverse DUT signal types. Use Value: Reduces need for multiple fixed-function ADC modules; software-selectable ranges and modes allow one hardware design to serve multiple test applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel, software-configurable ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7324BRUZ | 1000 kSPS throughput, same 12-bit+sign resolution and iCMOS™ process, identical 16-lead TSSOP package and pinout. | Higher-speed requirement (e.g., ultrasonic NDT, high-frequency power analysis) where 500 kSPS is insufficient. | Select AD7324BRUZ only if system demands >500 kSPS sustained throughput; otherwise AD7323BRUZ-REEL7 offers better power efficiency (18 mW vs. 25 mW) at target rate. |
| ADS8684IPWR | 16-bit SAR, 500 kSPS, true bipolar ±10 V input, but uses single-supply 4.75–5.25 V AVDD/DVDD and no negative rail - no VSS requirement. | Designs constrained by power supply complexity where generating ±12 V rails is impractical (e.g., battery-powered handheld testers). | Choose ADS8684IPWR when eliminating negative supply simplifies system architecture; accept trade-off of higher cost and reduced channel isolation (−65 dB vs. −72 dB) versus AD7323BRUZ-REEL7. |
Compared with AD7324BRUZ, AD7323BRUZ-REEL7 trades 2× throughput for 28% lower power at 500 kSPS and identical feature set; versus ADS8684IPWR, it delivers superior channel isolation and true high-voltage iCMOS™ robustness but requires dual analog supplies - making it optimal for industrial environments with existing ±12 V infrastructure.
Availability
AD7323BRUZ-REEL7 is available at Aetrix Electronics and suitable for industrial process monitoring, energy metering, motor control feedback, and test & measurement equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for AD7323BRUZ-REEL7 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 design centers worldwide and a legacy of precision data conversion innovation since 1965.
The AD732x family was designed specifically for industrial automation and instrumentation applications demanding true bipolar input handling, high-voltage tolerance, and flexible software-configurable analog front-ends - addressing challenges in PLCs, SCADA systems, and portable test gear.
FAQ
What input configurations does the AD7323BRUZ-REEL7 support per analog channel?
The AD7323BRUZ-REEL7 supports single-ended, true differential, and pseudo-differential input modes per channel - programmable via Mode 1/Mode 0 bits in the Control Register. For example, VIN0–VIN1 can form a true differential pair, while VIN2 and VIN3 operate as independent single-ended inputs, all simultaneously active under channel sequencer control.
Can the AD7323BRUZ-REEL7 operate with an external reference, and what voltage range is supported?
Yes, the AD7323BRUZ-REEL7 accepts an external reference applied to the REFIN/OUT pin within 2.5 V to 3.0 V. With a 3.0 V external reference, the device supports true bipolar ±12 V input range (requiring minimum ±12 V VDD/VSS supplies), extending beyond the ±10 V limit achievable with the internal 2.5 V reference.
What are the power supply requirements for the AD7323BRUZ-REEL7 to achieve its full ±10 V input range?
To achieve the full ±10 V input range, the AD7323BRUZ-REEL7 requires VDD ≥ +10 V and VSS ≤ −10 V, with recommended operating ranges of VDD = +12 V to +16.5 V and VSS = −12 V to −16.5 V. VCC and VDRIVE must each be 2.7 V to 5.25 V, decoupled separately to AGND and DGND respectively.
How does the channel sequencer function in the AD7323BRUZ-REEL7, and how is it programmed?
The AD7323BRUZ-REEL7 channel sequencer automatically cycles through up to four analog inputs based on the Sequence Register value. It is programmed via the 2-bit ADD1/ADD0 address bits in the Control Register and enabled by setting the SEQ bit; sequenced conversions occur on consecutive CS assertions without host intervention, reducing firmware overhead in continuous acquisition.
What is the significance of the iCMOS™ process used in the AD7323BRUZ-REEL7?
The iCMOS™ process combines high-voltage bipolar/CMOS technologies to enable AD7323BRUZ-REEL7's ±16.5 V analog supply capability while maintaining standard CMOS digital I/O voltage levels (2.7–5.25 V). This integration eliminates external high-voltage level shifters and improves noise immunity in electrically noisy industrial environments.
AD7323BRUZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCMOS®
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 2, 3, 4
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- ±12V ~ 16.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- True Bipolar
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7323BRUZ-REEL7 FAQ
1.How can I place an order for AD7323BRUZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7323BRUZ-REEL7 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 AD7323BRUZ-REEL7 reliable?
The price and inventory of AD7323BRUZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7323BRUZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7323BRUZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7323BRUZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7323BRUZ-REEL7?
AD7323BRUZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7323BRUZ-REEL7 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 AD7323BRUZ-REEL7?
For technical support, including AD7323BRUZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7323BRUZ-REEL7 requirements.
6.How does Aetrix verify that AD7323BRUZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7323BRUZ-REEL7 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 AD7323BRUZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7323BRUZ-REEL7?
All AD7323BRUZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7323BRUZ-REEL7, 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 AD7323BRUZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7323BRUZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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