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Analog Devices Inc. AD7356BRUZ
- Part No.:
- AD7356BRUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7356BRUZ.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:278
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Product details
Overview
AD7356BRUZ from Analog Devices is a dual, 12-bit, successive approximation register (SAR) ADC with simultaneous sampling, 5 MSPS per channel throughput, differential input architecture, on-chip 2.048 V reference, and SPI-compatible serial interface - deployed in motion control feedback loops requiring precise I/Q signal capture.
For engineers reviewing the AD7356BRUZ datasheet, AD7356BRUZ pinout, AD7356BRUZ application, or AD7356BRUZ equivalent, key selection criteria include simultaneous dual-channel acquisition timing, ±0.5 LSB INL at 5 MSPS, 71.5 dB typical SNR at 1 MHz input, and TSSOP-16 package compatibility with high-density PCB layouts.
Technical Context
The AD7356BRUZ integrates two independent SAR ADCs sharing a single 2.5 V VDD supply and internal 2.048 V reference, each with dedicated track-and-hold amplifiers supporting >110 MHz full-power bandwidth. Conversion is initiated on the falling edge of CS, with no latency between sampling and result availability.
Its dual SDATA outputs (SDATAA/SDATAB) deliver 12-bit results simultaneously in straight-binary format, MSB-first, with two leading zeros - enabling real-time parallel data capture without interleaving delay. Power management includes partial and full power-down modes, reducing current to 3.5 mA and 5 µA respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for precision amplitude quantization in closed-loop servo systems. |
| Throughput Rate | 5 MSPS per channel - supports real-time sampling of 2.5 MHz Nyquist-limited signals such as motor phase currents or RF I/Q baseband. |
| INL (Typ) | ±0.5 LSB - ensures monotonicity and <0.012% gain error across full scale, critical for accurate position or torque reconstruction. |
| SNR (Typ) | 71.5 dB at 1 MHz - enables >11.5 effective number of bits (ENOB) for high-fidelity signal digitization in noisy industrial environments. |
| Aperture Jitter | 16 ps - limits sampling uncertainty to <0.03° phase error at 10 MHz input, preserving time-domain integrity in synchronization-critical applications. |
| Reference Voltage | 2.048 V ±0.25% - provides stable scaling for ratiometric measurements; overdrivable up to VDD for external reference flexibility. |
| Supply Current (Normal Mode) | 14 mA at 5 MSPS - achieves 36 mW total power, balancing speed and thermal budget in space-constrained embedded controllers. |
Pinout & Package
AD7356BRUZ is housed in a 16-lead Thin Shrink Small Outline Package (TSSOP), 4.4 mm × 5.0 mm body, 0.65 mm pitch, with exposed pad for thermal enhancement. Pin 1 marked by dot; pins numbered counterclockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINA+, VINA− | Analog Input A | Differential pair for first ADC channel; requires matched source impedance ≤30 Ω to minimize settling error and maintain ±0.5 LSB INL. |
| VINB+, VINB− | Analog Input B | Differential pair for second ADC channel; electrically isolated from Channel A with −100 dB crosstalk for true simultaneous sampling. |
| REFA, REFB | Reference Decoupling | Connect 10 µF capacitor to REFGND to stabilize internal 2.048 V reference; also serve as buffered reference output points when overdriven externally. |
| REFGND | Reference Ground | Dedicated low-noise ground return for reference circuitry; must be tied to AGND plane, not DGND, to prevent reference noise coupling. |
| AGND, DGND | Analog/Digital Ground | Separate ground planes required; voltage difference limited to ±0.3 V to avoid digital switching noise corrupting analog conversion accuracy. |
| SDATAA, SDATAB | Serial Data Outputs | Simultaneous 12-bit MSB-first outputs; each carries full result from respective ADC - eliminates inter-channel timing skew in real-time control. |
| CS, SCLK | Control Interface | CS falling edge initiates sampling and conversion; SCLK frequency (up to 80 MHz) directly determines conversion time (tCONVERT = t2 + 13×tSCLK). |
Key Features
| Feature | Design Value |
|---|---|
| No conversion latency | Sampling instant precisely locked to CS falling edge; conversion completes in fixed 13 SCLK cycles - enables deterministic timing for hard real-time loop closure. |
| Dual independent ADC cores | Two fully separate SAR engines with individual track-and-hold circuits - guarantees true simultaneous acquisition without shared front-end settling artifacts. |
| On-chip 2.048 V reference | 6 ppm/°C drift and 60 µVrms noise - eliminates need for external reference IC in cost-sensitive motion control designs while maintaining ±0.25% accuracy over temperature. |
| ADC-to-ADC isolation | −100 dB - prevents signal leakage between channels during simultaneous sampling of high-amplitude, high-frequency inputs like motor phase currents. |
| Flexible power management | Three operational states (normal/partial/full power-down) controllable via SPI - reduces average power by >99% during idle periods in battery-powered or thermally constrained systems. |
Applications
| Motor Phase Current Sensing | I/Q Demodulation in SDR |
|---|---|
Use Scenario: Real-time measurement of three-phase motor winding currents using shunt resistors and differential amplifiers feeding into AD7356BRUZ. IC Role / Device Role / Timing Role: Dual ADC captures synchronized A- and B-phase currents at 5 MSPS to reconstruct instantaneous torque and flux vectors. Use Value: Simultaneous sampling eliminates phase skew between channels, enabling accurate field-oriented control (FOC) with <1 µs inter-channel timing mismatch. | Use Scenario: Digitizing in-phase (I) and quadrature (Q) baseband signals from analog mixers in software-defined radio receivers. IC Role / Device Role / Timing Role: AD7356BRUZ samples I and Q paths concurrently, preserving phase coherence required for complex envelope reconstruction. Use Value: −100 dB ADC-to-ADC isolation prevents image distortion and maintains >71 dB SNR across 2.5 MHz signal bandwidth. |
| Motion Control Feedback Loop | Industrial Data Acquisition |
Use Scenario: Closed-loop position control of servo actuators using encoder interpolation and current feedback in CNC machinery. IC Role / Device Role / Timing Role: AD7356BRUZ acquires position error signal and motor current in one atomic sample window for PID computation. Use Value: No conversion latency and 5 MSPS throughput allow sub-microsecond control cycle updates, improving dynamic response and reducing overshoot. | Use Scenario: High-speed transient capture in power quality analyzers monitoring grid harmonics and fault events. IC Role / Device Role / Timing Role: Dual-channel simultaneous sampling captures voltage and current waveforms for real-time RMS, THD, and power factor calculation. Use Value: 110 MHz full-power bandwidth and 71.5 dB SNR enable accurate harmonic analysis up to 40th order (2 kHz at 50 Hz fundamental). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7357BRUZ | 14-bit resolution, 4.25 MSPS, same TSSOP-16 package and pinout - higher ENOB but lower throughput and increased power (45 mW). | Better DC precision for static sensor measurement; less suitable for >2.1 MHz signal bandwidth due to reduced throughput. | Select AD7357BRUZ when resolution >12-bit is mandatory and 4.25 MSPS suffices; verify layout compatibility with identical footprint. |
| AD7266BRUZ | 12-bit, 2 MSPS, differential input, same 16-lead TSSOP - lower power (18 mW) but halved throughput and reduced SNR (69 dB). | Cost-optimized for slower control loops; lacks simultaneous dual readout - outputs multiplexed on single SDATA line. | Choose AD7266BRUZ for non-time-critical applications where 2 MSPS meets loop update requirements and board space allows same package. |
Compared with AD7356BRUZ, AD7357BRUZ trades 0.75 MSPS throughput for +2-bit resolution and higher SNR, while AD7266BRUZ sacrifices speed and dual-output capability for lower power and cost - making AD7356BRUZ the optimal balance for 5 MSPS simultaneous sampling with 12-bit fidelity.
Availability
AD7356BRUZ is available at Aetrix Electronics and suitable for motion control systems, software-defined radio receivers, industrial data acquisition units, and servo drive feedback circuits requiring stable component supply across extended temperature ranges (−40°C to +125°C).
Supply support for AD7356BRUZ 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The AD7356BRUZ belongs to Analog Devices' high-speed SAR ADC product line, engineered specifically for real-time industrial automation, motor control, and communications infrastructure demanding simultaneous dual-channel acquisition with minimal latency and high DC/AC accuracy.
FAQ
What is the maximum analog input frequency supported by the AD7356BRUZ?
The AD7356BRUZ supports a full-power bandwidth of 110 MHz at the −3 dB point and 77 MHz at the −0.1 dB point, enabling accurate digitization of high-frequency signals such as motor phase currents or IF signals in communication systems. This specification is verified under standard test conditions with VDD = 2.5 V and fSAMPLE = 5 MSPS. The AD7356BRUZ maintains ±0.5 LSB INL and 71.5 dB SNR within this bandwidth when properly decoupled and laid out.
Does the AD7356BRUZ require an external reference, or does it have an internal one?
The AD7356BRUZ includes an internal 2.048 V reference with ±0.25% initial accuracy and 6 ppm/°C temperature coefficient, eliminating the need for an external reference in most applications. The REFA and REFB pins can be used to buffer this reference for system-wide use, or overdriven with an external reference between 2.148 V and VDD (2.5 V). The AD7356BRUZ reference output delivers 60 µVrms noise and supports up to 0.45 mA load current.
How does the AD7356BRUZ achieve simultaneous sampling across both channels?
The AD7356BRUZ achieves true simultaneous sampling using two independent track-and-hold amplifiers - one per ADC channel - that sample their respective differential inputs (VINA+/VINA− and VINB+/VINB−) at the exact same instant, triggered by the falling edge of the CS signal. This architecture ensures <40 ps aperture delay match and −100 dB isolation, preventing inter-channel crosstalk. The AD7356BRUZ then converts both samples in parallel using separate SAR engines.
What serial interface protocols is the AD7356BRUZ compatible with?
The AD7356BRUZ features a high-speed serial interface compatible with SPI, QSPI™, MICROWIRE™, and DSP-standard protocols. It uses a 3-wire interface (CS, SCLK, SDATA) with data clocked on the falling edge of SCLK. The AD7356BRUZ supports 14-bit frames (two leading zeros + 12 data bits) and allows dual-channel data retrieval either simultaneously on SDATAA/SDATAB or sequentially on a single line - configurable via CS timing.
Can the AD7356BRUZ operate over the full industrial temperature range?
Yes, the AD7356BRUZ is specified for operation from −40°C to +125°C (Y grade), meeting extended industrial and automotive under-hood requirements. All key specifications - including 5 MSPS throughput, ±0.5 LSB INL, 71.5 dB SNR, and 2.048 V reference accuracy - are guaranteed across this range. Thermal hysteresis is limited to 50 ppm, and full power-down mode current remains below 90 µA at +125°C.
AD7356BRUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 5M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- SPI, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.25V ~ 2.75V
- Voltage - Supply, Digital:
- 2.25V ~ 2.75V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7356BRUZ FAQ
1.How can I place an order for AD7356BRUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7356BRUZ 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 AD7356BRUZ reliable?
The price and inventory of AD7356BRUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7356BRUZ is usually 5 days.
3.What payment methods are accepted for AD7356BRUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7356BRUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7356BRUZ?
AD7356BRUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7356BRUZ 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 AD7356BRUZ?
For technical support, including AD7356BRUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7356BRUZ requirements.
6.How does Aetrix verify that AD7356BRUZ is sourced from the original manufacturer or authorized distributors?
All AD7356BRUZ 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 AD7356BRUZ meets industry standards.
7.What is the process for return or replacement of AD7356BRUZ?
All AD7356BRUZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7356BRUZ, 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 AD7356BRUZ part is unused and in its original packaging.
Return procedure for AD7356BRUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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