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Analog Devices Inc. AD7617BSTZ
- Part No.:
- AD7617BSTZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 80-LQFP
- Datasheet:
-
AD7617BSTZ.pdf
- Description:
- IC ADC 14BIT SAR 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,943
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Product details
Overview
AD7617BSTZ from Analog Devices is a 14-bit, dual-simultaneous-sampling data acquisition system (DAS) with 16 analog input channels, ±10 V true bipolar input range, 1 MSPS throughput per channel pair, and integrated 2.5 V reference. It operates from a single 5 V analog supply and supports flexible serial/parallel interfaces for power line monitoring and protective relay systems.
For engineers reviewing the AD7617BSTZ datasheet, AD7617BSTZ pinout, AD7617BSTZ application, or AD7617BSTZ equivalent, this page delivers verified specifications, real-world timing behavior, hardware-configurable input ranges, oversampling-enabled SNR enhancement, and precise dual-channel synchronization requirements for high-fidelity industrial measurement.
Technical Context
The AD7617BSTZ integrates two independent 14-bit SAR ADCs with dual simultaneous sampling architecture, enabling synchronized capture of paired channels (e.g., V0A/V0B) within ≤100 ns matching. Its on-chip first-order antialiasing filter provides 39 kHz full-power bandwidth at ±10 V range and 5.5 kHz −0.1 dB flatness.
Digital control includes hardware-selectable input ranges (±2.5 V/±5 V/±10 V), burst-mode sequencer, optional CRC error checking, and SPI/QSPI/MICROWIRE/DSP-compatible serial interface. The device uses charge redistribution SAR conversion with internal 2.5 V reference or external reference via REFINOUT pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes - guarantees monotonicity and unambiguous digital representation across full input range. |
| Throughput Rate | 2 × 1 MSPS per channel pair - enables real-time capture of fast transients in multiphase motor control or fault detection. |
| SNR (typ) | 85 dB at 1 MSPS, 85.3 dB with OSR = 2 - meets Class A power quality monitoring accuracy per IEC 61000-4-30 Ed. 3. |
| INL / DNL | ±0.3 LSB INL (typ), ±0.99 LSB DNL (max) - ensures <0.006% gain/offset nonlinearity for calibrated instrumentation. |
| Analog Input Range | Software/hardware selectable ±10 V, ±5 V, or ±2.5 V - eliminates external level-shifting circuitry in mixed-signal sensor interfaces. |
| Input Impedance | 1 MΩ, stable across frequency and temperature - allows direct connection to high-impedance voltage sources without buffer amplifiers. |
| Reference | Integrated 2.5 V ±2 ppm/°C reference or external 2.495–2.505 V - supports traceable calibration without external reference ICs. |
Pinout & Package
AD7617BSTZ is housed in an 80-lead LQFP package (ST-80-21) with exposed pad, θJA = 41°C/W, and JEDEC-compliant reflow profile (Pb-free: 260°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V0A, V0B to V7A, V7B | Analog Input (16 total) | Paired differential-capable inputs for dual simultaneous sampling; each has dedicated AGND return (e.g., V0AGND, V0BGND). |
| REFINOUT / REFSEL | Reference I/O / Selection | Provides 2.5 V reference output when REFSEL = HIGH; accepts external 2.5 V reference when REFSEL = LOW - enables system-level reference sharing or precision upgrade. |
| CONVST / BUSY | Conversion Trigger / Status | Edge-triggered CONVST initiates synchronized sampling; BUSY asserts for 475–520 ns - defines minimum inter-conversion interval of 1 µs. |
| SER/PAR / DB0–DB15 | Interface Mode / Data Bus | SER/PAR selects serial (SPI/QSPI) or parallel mode; DB0–DB15 carry 14-bit result + 2 zero bits in parallel read - supports legacy microcontroller interfacing. |
| HW_RNGSEL0/1 | Hardware Range Select | Direct logic control of input range (00=SW, 01=±2.5 V, 10=±5 V, 11=±10 V) - enables fixed-function DAS without firmware configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous sampling | Guarantees sub-100 ns channel-to-channel skew between paired inputs - critical for vector measurements in protective relays. |
| Oversampling with digital filter | OSR = 2 improves SNR by 0.3 dB to 85.3 dB - achieves higher effective resolution without external decimation hardware. |
| Analog input clamp protection | Withstands ±21 V transient on any analog input - eliminates need for external TVS diodes in harsh industrial environments. |
| Fully integrated signal chain | Includes input buffer, antialiasing LPF, reference, reference buffer, and dual SAR ADC - reduces BOM count by ≥7 components vs discrete solution. |
| Flexible sequencer with burst mode | Hardware- or software-controlled channel sequencing - supports cyclic acquisition of 2–16 channels without host CPU intervention. |
Applications
| Power Line Monitoring | Protective Relaying |
|---|---|
Use Scenario: Continuous acquisition of voltage and current waveforms across three phases plus neutral in medium-voltage substations. IC Role / Device Role / Timing Role: Dual-simultaneous sampling captures phase-aligned V-I pairs (e.g., V0A/I0A, V0B/I0B) with <100 ns skew for accurate power factor and harmonic calculation. Use Value: 85.3 dB SNR with oversampling meets IEC 61000-4-30 Class A amplitude accuracy for 50/60 Hz fundamental and up to 50th harmonic. |
Use Scenario: Fault detection and trip decision in feeder protection relays using sampled analog inputs from CTs and PTs. IC Role / Device Role / Timing Role: Simultaneous sampling of voltage and current channels enables precise time-difference-of-arrival analysis for fault location algorithms. Use Value: ±0.3 LSB INL and ±106 dB channel isolation prevent false tripping due to crosstalk-induced measurement error during high-current faults. |
| Multiphase Motor Control | Data Acquisition Systems |
Use Scenario: Real-time current and back-EMF sensing in 3-phase PMSM drives for field-oriented control (FOC). IC Role / Device Role / Timing Role: Paired sampling of phase currents (e.g., IA, IB) at 1 MSPS enables accurate Clarke/Park transforms with minimal latency. Use Value: 1 MΩ input impedance and ±10 V range allow direct interface to isolated current shunt amplifiers without gain-setting resistors. |
Use Scenario: Modular rack-mounted DAS for laboratory and manufacturing test benches requiring configurable channel count and range. IC Role / Device Role / Timing Role: Hardware-configurable input ranges (via HW_RNGSEL) and flexible serial/parallel interface simplify integration into diverse controller platforms. Use Value: Integrated 2.5 V reference with ±2 ppm/°C drift eliminates external reference calibration burden in portable or thermally unstable environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar data acquisition system applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7616BSTZ | 16-channel, 16-bit, 1 MSPS/channel pair, same 80-lead LQFP package, but lacks hardware range select pins (HW_RNGSEL). | Higher resolution required for precision metrology; no hardware-only configuration - requires SPI initialization. | Select AD7616BSTZ when 16-bit resolution and lower THD (−105 dB) outweigh need for pin-strapped range selection. |
| AD7606BSTZ | 8-channel, 16-bit, 200 kSPS/channel, ±10 V input, integrated reference, but no dual simultaneous sampling - sequential sampling only. | Lower channel count and throughput acceptable for static process monitoring; no channel-pair synchronization capability. | Select AD7606BSTZ for cost-sensitive, lower-speed applications where simultaneous sampling is not required. |
Compared with AD7617BSTZ, AD7616BSTZ offers higher resolution but removes hardware configurability, while AD7606BSTZ reduces channel count and eliminates true dual-sampling-making AD7617BSTZ the only option supporting 16-channel, hardware-configured, simultaneously sampled bipolar acquisition at 1 MSPS.
Availability
AD7617BSTZ is available at Aetrix Electronics and suitable for power line monitoring, protective relaying, and multiphase motor control applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AD7617BSTZ 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 AD7617BSTZ belongs to Analog Devices' precision data acquisition product line, engineered for high-accuracy, high-channel-count industrial measurement systems where simultaneous sampling, bipolar input flexibility, and integrated signal conditioning are essential.
FAQ
What is the maximum sampling rate supported by the AD7617BSTZ?
The AD7617BSTZ supports a throughput rate of 2 × 1 MSPS per channel pair - meaning each of the two ADC cores samples its assigned channel at up to 1 million samples per second. This is achieved with a conversion time of 475–520 ns and acquisition time of 480 ns per pair. The AD7617BSTZ does not support interleaved or higher aggregate rates beyond this dual-channel limit.
Does the AD7617BSTZ require external op amps for signal conditioning?
No, the AD7617BSTZ does not require external op amps for basic operation. Its 1 MΩ analog input impedance, ±21 V input clamp protection, integrated first-order antialiasing filter, and on-chip 2.5 V reference eliminate the need for driver amplifiers, external bipolar supplies, or discrete filtering in most industrial applications. External op amps may still be used for specialized gain, isolation, or anti-aliasing beyond the on-chip filter's 39 kHz bandwidth.
Can the AD7617BSTZ operate with an external reference, and how is it configured?
Yes, the AD7617BSTZ supports both internal and external reference operation. When REFSEL is set HIGH, the internal 2.5 V reference is enabled and appears on the REFINOUT pin. When REFSEL is LOW, the internal reference is disabled and an external 2.495–2.505 V reference must be applied to REFINOUT. Decoupling with a 100 nF X7R capacitor between REFINOUT and REFINOUTGND is mandatory in both modes. The AD7617BSTZ reference path is fully validated for either configuration.
How does hardware mode differ from software mode on the AD7617BSTZ?
In hardware mode (HW_RNGSEL0/1 ≠ 00), input range is selected directly by pin states (±2.5 V, ±5 V, or ±10 V), and channel sequencing is limited to basic burst or fixed-order patterns. In software mode (HW_RNGSEL0/1 = 00), all functions-including range, channel order, oversampling ratio, and CRC-are controlled via SPI or parallel register writes. The AD7617BSTZ latches the mode at full reset release and requires another full reset to switch modes.
What is the purpose of the OS0, OS1, and OS2 pins on the AD7617BSTZ?
The OS0, OS1, and OS2 pins (multiplexed with DB13–DB15) configure the oversampling ratio (OSR) in hardware mode: OS2:OS0 = 000 selects no oversampling, 001 selects OSR = 2, and 010 selects OSR = 4. These pins have no function in software mode, where OSR is set via the configuration register. Oversampling improves SNR by up to 0.5 dB (to 85.5 dB at OSR = 4) and is applied digitally post-conversion within the AD7617BSTZ's integrated filter.
AD7617BSTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 80-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 16
- Input Type:
- Single Ended
- Data Interface:
- DSP, MICROWIRE™, Parallel, QSPI™, Serial, SPI™
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 4.75V ~ 5.5V
- Voltage - Supply, Digital:
- 2.3V ~ 3.6V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 80-LQFP (14x14)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7617BSTZ FAQ
1.How can I place an order for AD7617BSTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7617BSTZ 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 AD7617BSTZ reliable?
The price and inventory of AD7617BSTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7617BSTZ is usually 5 days.
3.What payment methods are accepted for AD7617BSTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7617BSTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7617BSTZ?
AD7617BSTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7617BSTZ 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 AD7617BSTZ?
For technical support, including AD7617BSTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7617BSTZ requirements.
6.How does Aetrix verify that AD7617BSTZ is sourced from the original manufacturer or authorized distributors?
All AD7617BSTZ 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 AD7617BSTZ meets industry standards.
7.What is the process for return or replacement of AD7617BSTZ?
All AD7617BSTZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7617BSTZ, 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 AD7617BSTZ part is unused and in its original packaging.
Return procedure for AD7617BSTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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