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Analog Devices Inc. AD7934BRUZ-6
- Part No.:
- AD7934BRUZ-6
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7934BRUZ-6.pdf
- Description:
- IC ADC 12BIT SAR 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,461
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Product details
Overview
AD7934BRUZ-6 from Analog Devices is a 12-bit, 4-channel, successive approximation register (SAR) analog-to-digital converter with integrated channel sequencer and on-chip 2.5 V reference. It delivers 1.5 MSPS throughput at 5 V supply, supports single-ended/pseudo-differential/differential input configurations via software control, and operates from a single 2.7 V to 5.25 V supply. It is used in high-speed data acquisition systems requiring precise multi-channel sampling with minimal latency.
For engineers reviewing the AD7934BRUZ-6 datasheet, AD7934BRUZ-6 pinout, AD7934BRUZ-6 application, or AD7934BRUZ-6 equivalent, key selection considerations include its 12-bit resolution, 70 dB SINAD at 50 kHz, 4-channel sequencer, parallel word/byte interface with VDRIVE level-shifting, and 28-lead TSSOP package compatibility with space-constrained industrial and instrumentation designs.
Technical Context
The AD7934BRUZ-6 implements a SAR architecture with a differential track-and-hold amplifier supporting up to 50 MHz input bandwidth and no pipeline delay. Its internal sequencer enables preprogrammed channel cycling across VIN0–VIN3 without host intervention.
It features dual-supply flexibility: VDD powers analog/digital cores (2.7–5.25 V), while VDRIVE independently sets I/O logic levels (2.7–5.25 V), enabling direct interfacing to 3 V or 5 V microprocessors. The on-chip 2.5 V reference offers ±0.2% accuracy at 25°C and 25 ppm/°C drift, and can be overdriven by an external reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonic output and no missing codes across full scale |
| Throughput Rate | 1.5 MSPS - enables real-time sampling of signals up to 50 MHz bandwidth with 13-clock-cycle conversion time |
| SINAD | 70 dB min at 50 kHz - ensures ≥11.3 effective number of bits (ENOB) for high-fidelity signal reconstruction |
| Reference Accuracy | ±0.2% max at 25°C - eliminates need for external precision reference in cost-sensitive applications |
| Power Dissipation | 13.5 mW max at 5 V / 1.5 MSPS - supports thermally constrained embedded systems without active cooling |
| Channel Count | 4 analog inputs with hardware sequencer - reduces host CPU overhead in multi-sensor monitoring |
| Interface Mode | Parallel word/byte with W/B pin - simplifies connection to both 8-bit and 16-bit microcontrollers |
Pinout & Package
AD7934BRUZ-6 is housed in a 28-lead TSSOP package (4.4 mm × 9.7 mm, 0.65 mm pitch) with exposed pad for thermal enhancement. Pin layout follows standard Analog Devices SAR ADC conventions, with separate AGND/DGND planes and dedicated VDRIVE for I/O voltage independence.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN0–VIN3 | Analog Input Channels | Four multiplexed inputs configurable as single-ended, pseudo-differential, or fully differential pairs via control register |
| CONVST | Conversion Start Trigger | Falling-edge initiated sampling; controls T/H mode transition and conversion start with precise aperture timing (5 ns typ) |
| BUSY | Conversion Status Indicator | Active-high open-drain output signaling conversion progress; synchronizes host read timing |
| RD/WR/CS | Parallel Interface Controls | Standard 3-wire handshake enabling non-multiplexed data transfer with no address bus required |
| VDRIVE | I/O Logic Supply | Decouples interface voltage from core supply-allows direct connection to 3 V or 5 V processors regardless of VDD |
| VREFIN/VREFOUT | Reference Source | Provides 2.5 V ±0.2% internal reference; accepts external reference from 0.1 V to VDD for custom scaling |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input modes | Single-ended, pseudo-differential, or fully differential operation selected via MODE bits-enables one device to serve diverse sensor types |
| On-chip 2.5 V reference | ±0.2% initial accuracy and 25 ppm/°C drift-reduces BOM count and improves system-level temperature stability |
| VDRIVE voltage independence | Separate I/O rail allows simultaneous use with 3 V microcontrollers and 5 V analog front-ends without level shifters |
| Hardware channel sequencer | Predefined channel order executed autonomously-eliminates software polling and reduces interrupt load in real-time systems |
| No pipeline delay | True SAR architecture delivers first valid sample after single CONVST edge-critical for deterministic control-loop timing |
Applications
| Industrial Motor Control | Medical Patient Monitoring |
|---|---|
Use Scenario: Real-time acquisition of current/voltage feedback from three-phase motor drives and position sensors. IC Role / Device Role / Timing Role: Simultaneous sampling of 4 analog channels (phase currents, DC bus voltage, temperature) with sequenced conversion and low-latency parallel readout. Use Value: 1.5 MSPS throughput and 70 dB SINAD ensure accurate torque estimation and fast fault detection within tight PWM cycles. |
Use Scenario: Multi-parameter physiological signal digitization including ECG, respiration, SpO₂, and temperature in portable monitors. IC Role / Device Role / Timing Role: High-precision, low-noise conversion of low-amplitude bio-signals using pseudo-differential input configuration and internal reference. Use Value: ±0.2% reference accuracy and 12-bit resolution support clinical-grade measurement repeatability without external calibration. |
| Automotive Battery Management | Test & Measurement Equipment |
Use Scenario: Cell voltage and temperature monitoring across 4-series Li-ion battery packs in EVs and energy storage systems. IC Role / Device Role / Timing Role: Sequenced conversion of isolated cell voltages with common-mode rejection and robust noise immunity in electrically noisy environments. Use Value: −85 dB channel-to-channel isolation and 50 MHz full-power bandwidth prevent crosstalk-induced state-of-charge errors. |
Use Scenario: Modular data acquisition modules requiring flexible input scaling and high channel density per footprint. IC Role / Device Role / Timing Role: Core ADC in benchtop oscilloscopes or automated test equipment where parallel interface enables burst-mode capture into FIFO buffers. Use Value: Word/byte mode and VDRIVE support seamless integration with FPGA-based controllers and legacy 8-bit microprocessor buses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7934BRUZ | Same 12-bit, 4-channel, 1.5 MSPS performance but lacks -6 speed grade designation; identical pinout and register map | Designed for same industrial/data acquisition use cases; no functional difference in operation or timing | Select AD7934BRUZ-6 when guaranteed 1.5 MSPS minimum throughput across full temperature range is required per datasheet Rev. B specifications |
| AD7938-6 | 8-channel variant with identical 12-bit resolution and 625 kSPS rating; shares same sequencer architecture and parallel interface | Better suited for systems needing higher channel count at lower throughput; larger 32-lead TSSOP footprint | Choose AD7938-6 when expanding from 4 to 8 analog inputs without redesigning firmware interface logic |
Compared with AD7934BRUZ-6, AD7934BRUZ offers identical functionality but without production-tested 1.5 MSPS guarantee across temperature, while AD7938-6 trades channel count for density-neither is pin-compatible, but both share register-level compatibility for faster firmware reuse.
Availability
AD7934BRUZ-6 is available at Aetrix Electronics and suitable for industrial motor control, medical patient monitoring, and automotive battery management requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7934BRUZ-6 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 AD7934BRUZ-6 belongs to Analog Devices' precision SAR ADC product line, engineered for high-speed, low-power, multi-channel data acquisition in instrumentation, industrial automation, and medical systems where accuracy, timing determinism, and integration matter.
FAQ
What is the maximum guaranteed throughput rate of the AD7934BRUZ-6?
The AD7934BRUZ-6 is specified for a maximum throughput rate of 1.5 MSPS across its full operating temperature range (−40°C to +85°C). This is confirmed in the AD7934 Specifications table (Rev. B, Page 5), where "Throughput Rate" is listed as 1.5 MSPS max under all test conditions. The -6 suffix denotes this speed grade, distinguishing it from lower-speed variants like the AD7934-6 rated at 625 kSPS.
Does the AD7934BRUZ-6 require an external reference, or does it have an internal one?
The AD7934BRUZ-6 includes an accurate on-chip 2.5 V reference with ±0.2% maximum initial error at 25°C and 25 ppm/°C temperature coefficient. This internal reference is available at the VREFIN/VREFOUT pin and may be used directly or overdriven by an external reference between 0.1 V and VDD. No external reference is required unless custom scaling or improved drift performance is needed.
How does the channel sequencer in the AD7934BRUZ-6 operate?
The AD7934BRUZ-6's hardware sequencer automatically cycles through up to four analog input channels (VIN0–VIN3) in a user-defined order stored in the control register. Once enabled, it performs conversions without host processor intervention-reducing software overhead and ensuring deterministic timing. Channel selection is configured via ADD1/ADD0 bits, and sequencing behavior is controlled by SEQ bit in the same register.
What is the purpose of the VDRIVE pin on the AD7934BRUZ-6?
The VDRIVE pin on the AD7934BRUZ-6 sets the logic voltage level for all parallel interface pins (DB0–DB11, RD, WR, CS, etc.), independent of the core supply VDD. This allows the AD7934BRUZ-6 to interface directly with 3 V or 5 V microprocessors-even when VDD is set to a different voltage-eliminating external level shifters and simplifying system design.
Is the AD7934BRUZ-6 pin-compatible with other devices in the AD7933/AD7934 family?
Yes, the AD7934BRUZ-6 shares identical 28-lead TSSOP pinout and register mapping with all members of the AD7933/AD7934 family, including AD7933BRUZ, AD7934BRUZ, and AD7934BRUZ-REEL. This enables drop-in replacement across resolution (10-/12-bit) and speed (625 kSPS / 1.5 MSPS) variants, provided timing and performance requirements are verified for the target application.
AD7934BRUZ-6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1.5M
- Number of Inputs:
- 4
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- Parallel
- 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:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7934BRUZ-6 FAQ
1.How can I place an order for AD7934BRUZ-6 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7934BRUZ-6 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 AD7934BRUZ-6 reliable?
The price and inventory of AD7934BRUZ-6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7934BRUZ-6 is usually 5 days.
3.What payment methods are accepted for AD7934BRUZ-6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7934BRUZ-6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7934BRUZ-6?
AD7934BRUZ-6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7934BRUZ-6 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 AD7934BRUZ-6?
For technical support, including AD7934BRUZ-6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7934BRUZ-6 requirements.
6.How does Aetrix verify that AD7934BRUZ-6 is sourced from the original manufacturer or authorized distributors?
All AD7934BRUZ-6 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 AD7934BRUZ-6 meets industry standards.
7.What is the process for return or replacement of AD7934BRUZ-6?
All AD7934BRUZ-6 units undergo pre-shipment inspection (PSI). If there is an issue with AD7934BRUZ-6, 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 AD7934BRUZ-6 part is unused and in its original packaging.
Return procedure for AD7934BRUZ-6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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