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Analog Devices Inc. AD7323BRUZ-REEL
- Part No.:
- AD7323BRUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7323BRUZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,019
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Product details
Overview
AD7323BRUZ-REEL from Analog Devices is a 4-channel, 12-bit plus sign successive approximation ADC with true bipolar input capability, 500 kSPS throughput, software-selectable ±10 V/±5 V/±2.5 V/0–10 V ranges, and integrated 2.5 V reference - deployed in industrial data acquisition systems requiring high-voltage analog signal digitization with channel sequencing.
For engineers reviewing the AD7323BRUZ-REEL datasheet, AD7323BRUZ-REEL pinout, AD7323BRUZ-REEL application, or AD7323BRUZ-REEL equivalent, key selection criteria include true differential/single-ended/pseudo-differential input configuration flexibility, iCMOS process-enabled ±16.5 V analog supply tolerance, 22 MHz full-power bandwidth, low 18 mW power at full rate, and SPI/QSPI/MICROWIRE-compatible serial interface timing compliance.
Technical Context
The AD7323BRUZ-REEL implements a 13-bit SAR architecture (12-bit + sign) with on-chip track-and-hold, channel sequencer, and programmable input mode logic (single-ended, true differential, or pseudo-differential). It uses iCMOS process technology to support ±16.5 V analog supplies while maintaining sub-1 LSB INL/DNL performance across all four software-configurable input ranges.
Its serial interface operates at up to 10 MHz SCLK, requires 16 clock cycles per conversion, and supports straight binary or two's complement output coding via control register bit. Internal 2.5 V reference is available at REFIN/OUT, and external reference operation enables ±12 V input range with appropriate VDD/VSS biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 13-bit (12-bit plus sign); guarantees no missing codes in differential mode, enabling precise bipolar signal capture. |
| Throughput Rate | 500 kSPS maximum; achieved with 16 SCLK cycles at 10 MHz, supporting real-time monitoring of fast transients. |
| Input Ranges | Software-selectable per channel: ±10 V, ±5 V, ±2.5 V, or 0–10 V; allows mixed-range acquisition without external signal conditioning. |
| Dynamic Performance | 76 dB SNR (differential, ±10 V), 72 dB SNR (single-ended); ensures >12 ENOB for precision measurement applications. |
| Power Consumption | 18 mW at 500 kSPS (VDD/VSS = ±16.5 V, VCC/VDRIVE = 5.25 V); enables thermally constrained industrial module integration. |
| Analog Supply Range | VDD = +12 V to +16.5 V, VSS = −12 V to −16.5 V; supports direct connection to ±15 V industrial rails without level-shifting. |
| Reference | Internal 2.5 V ±10 mV (TMIN to TMAX); stable enough for 12-bit+ accuracy without external reference unless ±12 V input required. |
Pinout & Package
AD7323BRUZ-REEL 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 functions are validated per Analog Devices Rev. B datasheet Figure 3 and Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low frame sync for serial interface; initiates conversion and enables DOUT three-state output. |
| DIN | Serial Data Input | Accepts register write commands (control, sequence, range) on SCLK falling edge; enables full device configuration. |
| DOUT | Serial Data Output | Outputs 16-bit stream (leading zero + 2-bit channel ID + sign + 12-bit data) MSB-first on SCLK falling edge. |
| SCLK | Serial Clock | Master clock for both data transfer and internal conversion timing; supports up to 10 MHz operation. |
| VIN0–VIN3 | Analog Input Channels | Four multiplexed inputs configurable per channel as single-ended, true differential (e.g., VIN0–VIN1), or pseudo-differential. |
| REFIN/OUT | Reference I/O | Provides 2.5 V internal reference or accepts external 2.5–3.0 V reference; enables ±12 V input range when externally driven. |
| VDD / VSS | Analog Power Supplies | +12 V to +16.5 V / −12 V to −16.5 V rails power analog front-end; iCMOS process allows wide voltage swing and true bipolar input. |
| VCC / VDRIVE | Digital Supplies | VCC (2.7–5.25 V) powers ADC core; VDRIVE (2.7–5.25 V, ≤ VCC + 0.3 V) sets logic interface voltage level independently. |
| AGND / DGND | Analog & Digital Grounds | Separate ground pins require <0.3 V potential difference; critical for achieving specified 76 dB SNR and −79 dB CMRR. |
Key Features
| Feature | Design Value |
|---|---|
| True bipolar input structure | Accepts ±10 V, ±5 V, ±2.5 V signals directly without external op-amp level-shifting or attenuation networks. |
| Per-channel input range selection | Each of VIN0–VIN3 independently programmed to one of four ranges via range register - eliminates hardware reconfiguration. |
| Configurable analog input topology | Supports four single-ended, two true differential, two pseudo-differential, or three pseudo-differential channels - maximizes channel utilization. |
| Integrated channel sequencer | Automatically cycles through enabled channels without host processor intervention; reduces firmware overhead in multi-channel polling. |
| Low-power iCMOS process | Enables 18 mW operation at 500 kSPS with ±16.5 V analog supplies - delivers high dynamic range in space-constrained industrial modules. |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
|
Use Scenario: Continuous acquisition of ±10 V sensor outputs (e.g., strain gauges, RTD bridges, LVDTs) in PLC backplanes or distributed I/O modules. IC Role / Device Role / Timing Role: Primary ADC for multi-sensor analog front-end; performs synchronized sampling with channel sequencer and software-defined gain. Use Value: Eliminates need for external signal conditioners due to true bipolar input and per-channel range programming - reducing BOM count and layout area. |
Use Scenario: Digitizing multiple DC-coupled waveforms (e.g., power supply ripple, motor phase currents) in benchtop analyzers and automated test systems. IC Role / Device Role / Timing Role: High-fidelity acquisition engine with 22 MHz full-power bandwidth and 76 dB SNR - captures fast transients without aliasing. Use Value: Enables single-chip solution for 4-channel simultaneous sampling with independent range settings - simplifying calibration and improving channel-to-channel isolation (−72 dB). |
| Energy Metering Interfaces | Motor Drive Current Sensing |
|
Use Scenario: Sampling isolated voltage and current transformer outputs (±5 V or 0–10 V) in DIN-rail mounted energy meters compliant with IEC 62053. IC Role / Device Role / Timing Role: Precision ADC interfacing with isolation amplifiers; uses internal 2.5 V reference for stable metrology-grade linearity. Use Value: Achieves ±1.1 LSB integral nonlinearity over temperature - meets Class 0.5 accuracy requirements without system-level trimming. |
Use Scenario: Real-time sampling of shunt-based phase current feedback (±2.5 V) in servo drives and inverters operating from ±15 V rails. IC Role / Device Role / Timing Role: High-speed current monitor ADC with 500 kSPS throughput and 305 ns acquisition time - supports FOC algorithms with minimal latency. Use Value: Direct compatibility with ±15 V analog supply eliminates level-shifter ICs; low 50 ps aperture jitter preserves current waveform fidelity. |
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-plus-sign resolution and iCMOS process; identical pinout and register map. | Higher speed required for closed-loop control or oversampling applications where 500 kSPS is insufficient. | Select AD7324BRUZ only if system demands >500 kSPS sustained rate; otherwise AD7323BRUZ-REEL offers optimal power/performance trade-off. |
| AD7321BRMZ | 2-channel variant, same resolution, ranges, and serial interface; 10-lead MSOP package instead of 16-lead TSSOP. | Space-constrained designs needing only two analog inputs, such as compact sensor nodes or auxiliary monitoring paths. | Choose AD7321BRMZ when channel count can be reduced and PCB area is critical; AD7323BRUZ-REEL remains preferred for full 4-channel density. |
Compared with AD7324BRUZ and AD7321BRMZ, the AD7323BRUZ-REEL uniquely balances 4-channel count, 500 kSPS throughput, and 18 mW power in a standard TSSOP - making it the most cost- and area-efficient choice for industrial DAQ where speed beyond 500 kSPS is unnecessary.
Availability
AD7323BRUZ-REEL is available at Aetrix Electronics and suitable for industrial process monitoring, test & measurement equipment, and energy metering interfaces requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7323BRUZ-REEL 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 AD732x family - including AD7323BRUZ-REEL - was designed specifically for industrial data acquisition systems demanding true bipolar input, wide supply tolerance, and flexible channel configuration without external support components.
FAQ
What input configurations does the AD7323BRUZ-REEL support per channel?
The AD7323BRUZ-REEL supports four single-ended inputs, two true differential pairs (e.g., VIN0–VIN1), two pseudo-differential inputs, or three pseudo-differential inputs - all selectable via Mode bits in the control register. Each channel's input type and range (±10 V, ±5 V, ±2.5 V, or 0–10 V) are independently programmable using the range register, enabling mixed-mode acquisition without hardware changes.
Does the AD7323BRUZ-REEL require an external reference for ±10 V input operation?
No, the AD7323BRUZ-REEL does not require an external reference for ±10 V input operation. Its internal 2.5 V reference is sufficient and enabled by default. The REFIN/OUT pin provides this 2.5 V output, and a 680 nF capacitor is recommended for stability. An external reference is only needed when extending the input range to ±12 V, which requires a 3.0 V reference and minimum ±12 V analog supplies.
How does the AD7323BRUZ-REEL handle power management in low-duty-cycle systems?
The AD7323BRUZ-REEL offers four power modes: Normal (18 mW at 500 kSPS), Autostandby (750 µA total supply current at 250 kSPS), Autoshutdown (1 µA), and Full Shutdown (1 µA). In low-duty-cycle systems, Autostandby mode automatically enters low-power state between conversions, reducing average power while retaining fast wake-up (<750 ns), making it ideal for battery-backed or energy-harvested DAQ nodes.
Can the AD7323BRUZ-REEL interface directly with 3.3 V microcontrollers?
Yes, the AD7323BRUZ-REEL supports direct 3.3 V microcontroller interfacing via its VDRIVE pin, which sets logic level thresholds independently of VCC. When VDRIVE = 3.3 V, input high voltage is 2.4 V min and output high voltage is VDRIVE − 0.2 V, ensuring reliable SPI communication. VCC may remain at 5 V for optimal ADC core performance while digital I/O operates at 3.3 V.
What is the guaranteed DC accuracy of the AD7323BRUZ-REEL across temperature?
The AD7323BRUZ-REEL guarantees ±1.1 LSB integral nonlinearity (INL) and ±0.9/+1.2 LSB differential nonlinearity (DNL) over −40°C to +85°C in single-ended/pseudo-differential mode. Offset error is ±4/+9 LSB, gain error ±8 LSB, and bipolar zero error ±8.5 LSB - all specified across full temperature range with internal reference, enabling uncalibrated 12-bit precision in industrial environments.
AD7323BRUZ-REEL 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-REEL FAQ
1.How can I place an order for AD7323BRUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7323BRUZ-REEL 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-REEL reliable?
The price and inventory of AD7323BRUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7323BRUZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7323BRUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7323BRUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7323BRUZ-REEL?
AD7323BRUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7323BRUZ-REEL 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-REEL?
For technical support, including AD7323BRUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7323BRUZ-REEL requirements.
6.How does Aetrix verify that AD7323BRUZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7323BRUZ-REEL 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-REEL meets industry standards.
7.What is the process for return or replacement of AD7323BRUZ-REEL?
All AD7323BRUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7323BRUZ-REEL, 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-REEL part is unused and in its original packaging.
Return procedure for AD7323BRUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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