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Analog Devices Inc. AD7723BSZ-REEL
- Part No.:
- AD7723BSZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 44-QFP
- Datasheet:
-
AD7723BSZ-REEL.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 44MQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,860
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Product details
Overview
AD7723BSZ-REEL from Analog Devices is a 16-bit, sigma-delta analog-to-digital converter (ADC) with 1.2 MSPS output word rate, on-chip 2.5 V reference, and programmable low-pass or band-pass FIR digital filtering. It operates from a single 5 V supply, supports unipolar/bipolar input ranges up to ±4/5 × VREF2, and targets high-fidelity data acquisition in industrial instrumentation and DSP-based signal processing systems.
For engineers reviewing the AD7723BSZ-REEL datasheet, AD7723BSZ-REEL pinout, AD7723BSZ-REEL application, or AD7723BSZ-REEL equivalent, key selection considerations include oversampling ratio (32×/16×), decimation-dependent filter response (±0.001 dB passband ripple), standby power (200 µW), parallel/serial interface flexibility, and industrial temperature range (–40°C to +85°C).
Technical Context
The AD7723BSZ-REEL integrates a continuous-time sigma-delta modulator followed by a finite impulse response (FIR) digital filter with selectable decimation ratios (16× or 32×) and filter type (low-pass or band-pass). Its linear-phase FIR architecture ensures minimal group delay distortion-1293/fCLKIN for decimate-by-32 mode-and enables precise timing-critical sampling in synchronized multi-ADC systems via SYNC input.
Interface operation is configurable through MODE1/MODE2 pins for parallel or serial modes, with serial support for stereo multiplexing (two devices sharing one SDO line) and compatibility with ADSP-21xx, SHARC, DSP56002, and TMS320C5x processors. Clocking accepts either external 1–19.2 MHz CLKIN or internal crystal oscillator (XTAL/CLKIN pins with XTAL_OFF control).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit-guarantees monotonic transfer function and ≥65,536 distinct output codes without missing codes. |
| Output Word Rate | Up to 1.2 MSPS at fCLKIN = 19.2 MHz with decimate-by-16-enables real-time capture of signals up to 460 kHz bandwidth. |
| SNR (Bipolar, LPF, 2.5 V ref) | 90 dB typical-translates to effective resolution of ~14.7 bits for full-scale sine inputs within 460 kHz measurement bandwidth. |
| Digital Filter Response | Low-pass decimate-by-32: −3 dB at fCLKIN/66.9, −90 dB stopband attenuation beyond fCLKIN/51.9-reduces need for external anti-aliasing beyond first-order RC. |
| Power Consumption | 60 mA AVDD + 35 mA DVDD at full speed (HALF_PWR = low); drops to 200 µW in standby-supports low-duty-cycle sensing applications. |
| Analog Input Range | Bipolar: ±4/5 × VREF2 (±2.0 V typical with internal 2.5 V ref); unipolar: 0 to 8/5 × VREF2 (0 to 4.0 V)-simplifies sensor interfacing without external level-shifting. |
| Reference | Integrated 2.5 V ±150 mV (60 ppm/°C drift) reference with REF1 buffer output-eliminates external reference IC in cost-sensitive designs. |
Pinout & Package
AD7723BSZ-REEL is housed in a 44-lead MQFP (Metric Quad Flat Package) with 0.8 mm lead pitch, compliant with industrial temperature range (–40°C to +85°C) and RoHS requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN(+), VIN(−) | Differential analog input terminals | Accept continuous-sampled differential input; no external sample-and-hold required-reduces BOM and layout complexity. |
| REF2, REF1 | Reference voltage input/output | REF2 connects to internal 2.5 V reference buffer; REF1 provides buffered 2.5 V output for external circuitry or reference sharing. |
| CLKIN, XTAL, XTAL_OFF | Timing input and crystal oscillator control | Supports external clock (1–19.2 MHz) or fundamental-mode crystal; XTAL_OFF disables internal oscillator for clock source flexibility. |
| MODE1, MODE2 | Interface configuration select | Determines parallel vs. serial operation and digital filter mode in parallel mode-enables hardware-configurable system integration. |
| DRDY, DOE, SDO, SCO, FSI, FSO | Serial data interface signals | Enable synchronous serial output with frame sync, clock output, and data enable-facilitates daisy-chaining and multi-device synchronization. |
| DB0–DB15, RD, CS | Parallel data bus and control | 16-bit bidirectional data bus with read strobe and chip select-allows direct connection to microcontroller or FPGA parallel interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable FIR filter mode | Configurable low-pass or band-pass response via SLP/SLDR pins-adapts to baseband or IF sampling architectures without firmware change. |
| Flexible clocking architecture | Crystal oscillator or external clock input with HALF_PWR pin enabling 10 MHz max operation at half power-optimizes power/performance trade-off. |
| Stereo serial interface | Two AD7723BSZ-REEL devices can share one SDO line using TSI/DOE logic-reduces PCB routing and host interface resource usage. |
| SYNC input for multi-ADC alignment | Rising-edge-triggered digital filter reset synchronizes sampling across multiple AD7723BSZ-REEL units on common clock-ensures coherent phase relationships in arrayed sensors. |
| Unipolar/bipolar input range selection | UNI pin configures full-scale span as 0–4.0 V (unipolar) or ±2.0 V (bipolar)-matches diverse transducer outputs without external op-amp gain stages. |
Applications
| Industrial Process Monitoring | Motor Control Feedback |
|---|---|
|
Use Scenario: High-accuracy current/voltage sensing in PLC analog input modules monitoring 4–20 mA loops and AC motor drives. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog feedback signals with 16-bit resolution and <1 LSB INL at 1.2 MSPS output rate. Use Value: Enables closed-loop control with sub-0.1% gain error and 80 dB DC CMRR-rejects ground noise in electrically noisy factory environments. |
Use Scenario: Real-time rotor position and phase current sampling in servo drives using resolver or Hall-effect sensors. IC Role / Device Role / Timing Role: Simultaneous dual-channel sampling (via SYNC) of back-EMF and current waveforms for field-oriented control algorithms. Use Value: Band-pass filter mode supports IF sampling of 10–50 kHz motor harmonics; linear-phase FIR preserves time alignment critical for vector control. |
| Medical Ultrasound Beamforming | DSP-Based Communications Receiver |
|
Use Scenario: Digitizing echo return signals from phased-array transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: High-SNR ADC front-end with 90 dB SNR and 90 dB SFDR-preserves weak tissue echoes amid strong near-field reflections. Use Value: On-chip 2.5 V reference eliminates drift-induced baseline shift during long imaging sessions; standby mode reduces idle power in battery-powered units. |
Use Scenario: Intermediate-frequency (IF) digitization in software-defined radio receivers operating at 10–100 MHz carrier frequencies. IC Role / Device Role / Timing Role: Sigma-delta ADC configured in band-pass mode for direct IF sampling at 460 kHz bandwidth with decimate-by-32. Use Value: Programmable filter corner frequency and linear-phase response maintain signal integrity across channelized demodulation-no additional interpolation filters needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7722BRUZ | 16-bit, 1.2 MSPS, but lacks on-chip crystal oscillator and band-pass filter mode; uses external reference only. | Requires external clock source and reference IC-increases component count and layout area versus AD7723BSZ-REEL. | Select AD7722BRUZ only when crystal oscillator integration is unnecessary and board space permits discrete timing components. |
| ADS127L01IPBS | 16-bit, 512 kSPS max, integrated PGA, lower power (18 mW), but no band-pass filter or SYNC input for multi-device sync. | Optimized for low-power, high-precision sensor nodes-not suitable for real-time DSP interfacing or synchronized multi-ADC arrays. | Choose ADS127L01IPBS for battery-powered condition monitoring where throughput ≤512 kSPS suffices and SYNC is not required. |
Compared with AD7723BSZ-REEL, AD7722BRUZ trades integrated timing and filtering for simpler reference architecture, while ADS127L01IPBS prioritizes power efficiency over real-time throughput and synchronization capability-making AD7723BSZ-REEL uniquely suited for industrial DSP-accelerated acquisition requiring deterministic latency and multi-unit coherence.
Availability
AD7723BSZ-REEL is available at Aetrix Electronics and suitable for industrial process monitoring, motor control feedback, medical ultrasound beamforming, and DSP-based communications receivers requiring stable component supply across extended production lifecycles.
Supply support for AD7723BSZ-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, with design centers worldwide and ISO 9001-certified manufacturing.
The AD7723BSZ-REEL belongs to Analog Devices' precision sigma-delta ADC product line, engineered for high-speed, high-resolution data acquisition in industrial, medical, and communications equipment where accuracy, timing coherence, and system integration matter.
FAQ
What is the maximum clock input frequency supported by the AD7723BSZ-REEL?
The AD7723BSZ-REEL supports CLKIN frequencies from 1 MHz to 19.2 MHz. When HALF_PWR is set high, the maximum allowed CLKIN frequency reduces to 10 MHz to achieve approximately 50% power reduction. At full power and 19.2 MHz CLKIN, the device delivers its rated 1.2 MSPS output word rate with decimate-by-16 configuration.
Does the AD7723BSZ-REEL require an external crystal or clock source?
No-the AD7723BSZ-REEL includes an integrated crystal oscillator amplifier and supports direct connection of a parallel-resonant fundamental-mode crystal between XTAL and CLKIN pins (with XTAL_OFF tied low). Alternatively, an external clock can be applied to CLKIN with XTAL_OFF tied high and XTAL grounded. Both configurations are fully supported per the AD7723BSZ-REEL datasheet.
Can the AD7723BSZ-REEL operate with an external reference voltage?
Yes-the AD7723BSZ-REEL accepts external reference voltages from 1.2 V to 3.15 V applied to the REF2 pin. When using an external reference, REF1 must be tied to AGND to disable the internal buffer amplifier. The internal 2.5 V reference remains available as a precision 2.5 V output on REF1 for auxiliary circuitry.
How does the SYNC input function in multi-ADC systems using AD7723BSZ-REEL?
The SYNC input resets the digital filter sequencer counter to zero on each rising edge, ensuring simultaneous sampling and output register update across multiple AD7723BSZ-REEL devices sharing a common master clock. This guarantees phase-coherent data capture for applications like beamforming or synchronized motor current sensing-critical for maintaining signal integrity in arrayed systems.
What interface modes does the AD7723BSZ-REEL support, and how are they selected?
The AD7723BSZ-REEL supports both parallel and serial interfaces, selected via MODE1 and MODE2 pins. Parallel mode (MODE1=1, MODE2=0/1) uses DB0–DB15 with RD/CS control; serial mode (MODE1=0, MODE2=0) uses SDO/SCO/FSI/FSO with format control via CFMT/SFMT/SLP pins. Pin strapping allows hardware-selectable operation without firmware reconfiguration.
AD7723BSZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 44-QFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 1.2M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI, Parallel
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 44-MQFP (10x10)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7723BSZ-REEL FAQ
1.How can I place an order for AD7723BSZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7723BSZ-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 AD7723BSZ-REEL reliable?
The price and inventory of AD7723BSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7723BSZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7723BSZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7723BSZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7723BSZ-REEL?
AD7723BSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7723BSZ-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 AD7723BSZ-REEL?
For technical support, including AD7723BSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7723BSZ-REEL requirements.
6.How does Aetrix verify that AD7723BSZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7723BSZ-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 AD7723BSZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7723BSZ-REEL?
All AD7723BSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7723BSZ-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 AD7723BSZ-REEL part is unused and in its original packaging.
Return procedure for AD7723BSZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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