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Analog Devices Inc. AD7324BRUZ-REEL7
- Part No.:
- AD7324BRUZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7324BRUZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:895
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Product details
Overview
AD7324BRUZ-REEL7 from Analog Devices is a 4-channel, 12-bit plus sign successive approximation register (SAR) analog-to-digital converter with true bipolar input capability, software-selectable ±10 V/±5 V/±2.5 V/0 V to +10 V ranges, 1 MSPS throughput rate, and integrated 2.5 V reference - used in industrial data acquisition systems requiring high-voltage signal digitization with channel sequencing.
For engineers reviewing the AD7324BRUZ-REEL7 datasheet, AD7324BRUZ-REEL7 pinout, AD7324BRUZ-REEL7 application, or AD7324BRUZ-REEL7 equivalent, key selection considerations include its iCMOS process enabling ±16.5 V analog supply operation, true differential/single-ended/pseudo-differential input configuration per channel, SPI/QSPI/MICROWIRE-compatible serial interface, and low-power 21 mW operational mode at 1 MSPS.
Technical Context
The AD7324BRUZ-REEL7 implements a 13-bit SAR architecture with track-and-hold, channel sequencer, and programmable input structure supporting four independent analog input configurations: single-ended, true differential, or pseudo-differential. Its iCMOS process enables simultaneous high-voltage analog operation (±16.5 V supplies) and low-voltage digital interfacing (2.7 V–5.25 V VDRIVE).
Conversion control is managed via a 16-bit serial interface with chip select framing, where each transaction includes a leading zero bit, two channel ID bits, sign bit, and 12 data bits (MSB first). Input range selection, channel addressing, and operating mode are configured through on-chip registers accessible via DIN/DOUT/SCLK.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit plus sign (13-bit effective), no missing codes guaranteed in differential mode |
| Throughput Rate | 1 MSPS maximum - supports real-time sampling of fast transients in motor control feedback loops |
| Analog Input Ranges | Software-selectable per channel: ±10 V, ±5 V, ±2.5 V, or 0 V to +10 V - eliminates external signal conditioning for mixed-signal industrial sensors |
| Reference | Internal 2.5 V ±10 mV (25 ppm/°C TC); external reference support up to 3.0 V - enables ±12 V input with external 3 V reference |
| Power Dissipation | 21 mW at 1 MSPS (VDD = ±12 V, VCC = 5 V) - suitable for thermally constrained PLC modules |
| Full Power Bandwidth | 22 MHz at 3 dB - preserves fidelity of wideband sensor outputs such as piezoelectric accelerometers |
| Channel Isolation | −72 dB up to 100 kHz - ensures accurate multi-channel measurement without crosstalk in shared analog backplanes |
Pinout & Package
AD7324BRUZ-REEL7 is housed in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch) with exposed pad for thermal performance. 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 | Data Input | Serial command input for register writes (control, sequence, range); clocked on SCLK falling edge |
| DOUT | Data Output | 16-bit serial result (leading zero + 2-bit channel ID + sign + 12-bit data), MSB-first, SCLK-falling-edge aligned |
| SCLK | Serial Clock | Master clock up to 20 MHz; drives both interface timing and internal ADC conversion clock |
| VIN0–VIN3 | Analog Inputs | Four multiplexed inputs configurable per channel as single-ended, true differential (VIN0/VIN1, VIN2/VIN3), or pseudo-differential |
| REFIN/OUT | Reference I/O | 2.5 V internal reference output; accepts external 2.5–3.0 V reference for extended input range scaling |
| VDD / VSS | Analog Supplies | +12 V to +16.5 V (VDD) and −12 V to −16.5 V (VSS) - enable true bipolar ±10 V input without level-shifting |
| VCC | Digital Core Supply | +2.7 V to +5.25 V supply for ADC core; decoupled to AGND to minimize noise coupling into analog path |
| VDRIVE | I/O Logic Supply | +2.7 V to +5.25 V logic interface voltage - may differ from VCC but must not exceed it by >0.3 V |
| AGND / DGND | Analog & Digital Grounds | Separate ground pins; must be held within ±0.3 V potential difference to prevent ground-loop-induced INL errors |
Key Features
| Feature | Design Value |
|---|---|
| iCMOS process technology | Enables ±16.5 V analog supply operation with submicron CMOS digital logic - reduces need for isolated power rails in HV industrial systems |
| Per-channel input range selection | Each of four inputs independently programmed to ±10 V, ±5 V, ±2.5 V, or 0–10 V - supports mixed-signal sensor arrays (e.g., thermocouples + RTDs + 4–20 mA receivers) |
| True differential input capability | Hardware-supported differential pairs (VIN0/VIN1, VIN2/VIN3) with −79 dB CMRR up to 100 kHz - rejects common-mode noise in motor drive current sensing |
| Integrated channel sequencer | Automatically cycles through enabled channels without host CPU intervention - reduces firmware overhead in cyclic data logging applications |
| Multiple power-down modes | Autostandby (1.3 mA), autoshutdown (1 µA), full shutdown (1 µA) - extends battery life in portable test equipment between acquisitions |
Applications
| Industrial Process Monitoring | Motor Drive Current Feedback |
|---|---|
|
Use Scenario: Continuous monitoring of temperature, pressure, and flow sensors across a factory floor using 4–20 mA, ±10 V, and thermocouple signals. IC Role / Device Role / Timing Role: 4-channel ADC digitizing mixed-range analog inputs with per-channel software-selectable ranges and automatic channel sequencing. Use Value: Eliminates external gain/level-shift circuitry for each sensor type, reducing BOM count and PCB area in modular I/O modules. |
Use Scenario: Real-time sampling of phase currents in 3-phase inverter drives for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: True differential ADC capturing high-bandwidth current sense signals with 22 MHz full-power bandwidth and −72 dB channel isolation. Use Value: Maintains synchronization across current channels with <1 ns aperture jitter, enabling precise torque ripple suppression. |
| Programmable Logic Controller (PLC) Analog Input Module | Portable Data Acquisition Equipment |
|
Use Scenario: Modular PLC backplane accepting diverse field instruments (RTDs, strain gauges, position encoders) with varying output formats. IC Role / Device Role / Timing Role: High-voltage tolerant ADC supporting ±16.5 V supplies and ±10 V inputs while interfacing to 3.3 V or 5 V microcontrollers via SPI. Use Value: iCMOS process allows direct connection to industrial sensors without protection diodes or isolated DC/DC converters. |
Use Scenario: Battery-powered handheld oscilloscopes or multimeters requiring high-resolution, multi-range analog capture in compact form factor. IC Role / Device Role / Timing Role: Low-power 21 mW ADC with autostandby mode and 1 µA shutdown current - extends runtime between charges. Use Value: Integrated 2.5 V reference and flexible input ranges reduce external component count, enabling smaller enclosure designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-to-digital conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7323BRUZ | Same 4-channel, 12-bit-plus-sign architecture but rated for 500 kSPS max; lacks autostandby mode and has lower SNR (72.5 dB typical) | Lower throughput and reduced dynamic performance limit use in closed-loop motor control requiring >750 kSPS sampling | Select AD7323BRUZ only when cost sensitivity outweighs speed and SNR requirements in static sensor monitoring. |
| AD7322BRMZ | 2-channel variant with identical specs per channel; same 1 MSPS rate, ±10 V range, and iCMOS process but half the channel count | Requires two devices to match AD7324BRUZ-REEL7's 4-channel density - increases layout area and interconnect complexity | Choose AD7322BRMZ when system design mandates dual independent ADC subsystems with separate sequencing control. |
Compared with AD7323BRUZ and AD7322BRMZ, the AD7324BRUZ-REEL7 delivers higher channel density with full-speed 1 MSPS operation and superior SNR, making it optimal for space-constrained industrial controllers needing synchronized multi-sensor acquisition without external multiplexing.
Availability
AD7324BRUZ-REEL7 is available at Aetrix Electronics and suitable for industrial process monitoring, motor drive current feedback, PLC analog input modules, and portable data acquisition equipment requiring stable component supply and long-term manufacturability.
Supply support for AD7324BRUZ-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 engineering expertise spanning precision conversion, power management, and RF technologies.
The AD7324BRUZ-REEL7 belongs to Analog Devices' iCMOS-based precision ADC product line, designed specifically for industrial automation systems demanding robust bipolar signal acquisition, high channel density, and low-power operation under harsh electrical environments.
FAQ
What input voltage ranges does the AD7324BRUZ-REEL7 support, and how are they selected?
The AD7324BRUZ-REEL7 supports four software-selectable input ranges per channel: ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V. Selection is performed by writing to the range register via the serial interface. Each analog input (VIN0–VIN3) can be independently configured, enabling mixed-range acquisition in a single device. The AD7324BRUZ-REEL7 requires appropriate VDD/VSS supply voltages (e.g., ±12 V minimum for ±10 V range) and uses either its internal 2.5 V reference or an external reference applied to REFIN/OUT.
Does the AD7324BRUZ-REEL7 require an external reference, or does it have an internal one?
The AD7324BRUZ-REEL7 includes an internal 2.5 V reference with ±10 mV accuracy at 25°C and 25 ppm/°C temperature coefficient. This reference is available on the REFIN/OUT pin and can be used directly or buffered externally. The AD7324BRUZ-REEL7 also supports external reference operation - applying a 2.5 V to 3.0 V reference to REFIN/OUT disables the internal reference and enables extended input ranges (e.g., ±12 V with a 3 V reference). No external reference is required for standard ±10 V operation.
How does the AD7324BRUZ-REEL7 handle analog input configuration - single-ended, differential, or pseudo-differential?
The AD7324BRUZ-REEL7 supports all three analog input configurations via control register programming: four single-ended inputs (VIN0–VIN3 referenced to AGND), two true differential pairs (VIN0/VIN1 and VIN2/VIN3), or combinations including pseudo-differential (e.g., VIN0 as positive, VIN1 as dedicated negative for multiple channels). The mode bits (Mode1/Mode0) and channel address bits (ADD1/ADD0) determine topology. True differential mode provides −79 dB CMRR and improved noise rejection critical for current sensing applications using the AD7324BRUZ-REEL7.
What power supply requirements must be met for the AD7324BRUZ-REEL7 to operate at ±10 V input range?
To operate the AD7324BRUZ-REEL7 in ±10 V input range, VDD must be ≥ +10 V and VSS ≤ −10 V (recommended: ±12 V to ±16.5 V per datasheet). VCC must be 2.7 V to 5.25 V for the digital core, and VDRIVE (I/O logic supply) must be 2.7 V to 5.25 V, not exceeding VCC by more than 0.3 V. AGND and DGND must remain within ±0.3 V of each other. These conditions ensure proper headroom for the iCMOS input stage and maintain specified INL and SNR performance across the full ±10 V span.
Can the AD7324BRUZ-REEL7 interface directly with a 3.3 V microcontroller SPI port?
Yes - the AD7324BRUZ-REEL7 supports 3.3 V logic interfacing via the VDRIVE pin. When VDRIVE = 3.3 V, the CS, DIN, SCLK, and DOUT signals operate at 3.3 V logic levels, compatible with standard 3.3 V microcontrollers. VCC (digital core supply) may be set to 3.3 V or 5 V independently, but VDRIVE must not exceed VCC by more than 0.3 V. The AD7324BRUZ-REEL7's SPI/QSPI/MICROWIRE-compatible interface requires no level shifters when VDRIVE is configured to match the host MCU's I/O voltage.
AD7324BRUZ-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):
- 1M
- 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:
- -
AD7324BRUZ-REEL7 FAQ
1.How can I place an order for AD7324BRUZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7324BRUZ-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 AD7324BRUZ-REEL7 reliable?
The price and inventory of AD7324BRUZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7324BRUZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7324BRUZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7324BRUZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7324BRUZ-REEL7?
AD7324BRUZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7324BRUZ-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 AD7324BRUZ-REEL7?
For technical support, including AD7324BRUZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7324BRUZ-REEL7 requirements.
6.How does Aetrix verify that AD7324BRUZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7324BRUZ-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 AD7324BRUZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7324BRUZ-REEL7?
All AD7324BRUZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7324BRUZ-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 AD7324BRUZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7324BRUZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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