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Analog Devices Inc. AD7680ARJZ-REEL7
- Part No.:
- AD7680ARJZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
AD7680ARJZ-REEL7.pdf
- Description:
- IC ADC 16BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,250
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Product details
Overview
AD7680ARJZ-REEL7 from Analog Devices is a 16-bit, successive approximation analog-to-digital converter (ADC) in a 6-lead SOT-23 package, operating from a single 2.5 V to 5.5 V supply with 100 kSPS throughput and 3 mW typical power at 2.5 V. It features no pipeline delay, internal VDD-referenced conversion, and SPI/QSPI/μWire/DSP-compatible serial interface for embedded data acquisition in space-constrained systems.
For engineers reviewing the AD7680ARJZ-REEL7 datasheet, AD7680ARJZ-REEL7 pinout, AD7680ARJZ-REEL7 application, or AD7680ARJZ-REEL7 equivalent, key selection criteria include unipolar input range (0 V to VDD), 86 dB SNR at 10 kHz, 8 μs max conversion time, 0.5 μA max standby current, and SOT-23 footprint compatibility for portable instrumentation and battery-powered sensor nodes.
Technical Context
The AD7680ARJZ-REEL7 implements a capacitive DAC-based successive approximation architecture with track-and-hold acquisition time ≤400 ns for sine-wave inputs ≤10 kHz. Its conversion is initiated on the falling edge of CS and clocked by SCLK, supporting 20- or 24-cycle serial readout (MSB-first, four leading zeros).
It uses VDD as its internal reference source-eliminating external reference components-and operates in Normal Mode (≤4.8 mA at 5.5 V, 100 kSPS) or Full Power-Down Mode (0.5 μA max), with flexible serial clock speed management enabling dynamic power scaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit unipolar ADC with straight binary output; LSB = VDD/65536 |
| Throughput Rate | 100 kSPS maximum; determined by SCLK frequency (2.5 MHz max) |
| SNR | 86 dB typ at 10 kHz input; enables high-fidelity signal capture in low-noise applications |
| Power Dissipation | 3 mW typ at 100 kSPS with 2.5 V supply; supports ultra-low-power battery operation |
| Conversion Time | 8 μs max (20 SCLK cycles); ensures deterministic timing for real-time control loops |
| Input Range | 0 V to VDD; eliminates need for level-shifting circuitry when interfacing with same-supply sensors |
| Standby Current | 0.5 μA max; allows rapid wake-up from deep sleep without calibration loss |
Pinout & Package
AD7680ARJZ-REEL7 is housed in a 6-lead SOT-23 package (JEDEC MO-178AA), with exposed pad not electrically connected. Pin assignments are validated per Analog Devices Rev. A datasheet Figure 3 and Table 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power Supply Input | Single 2.5 V–5.5 V supply; also serves as internal reference source for full-scale range |
| GND (Pin 2) | Analog Ground | Common reference for analog input and internal circuitry; must be star-connected to minimize noise coupling |
| VIN (Pin 3) | Analog Input | Single-ended unipolar input (0 V to VDD); 30 pF input capacitance requires low-impedance drive for optimal THD |
| SCLK (Pin 4) | Serial Clock Input | Controls both data transfer timing and internal conversion clock; accepts up to 2.5 MHz; logic levels independent of VDD (up to 7 V) |
| SDATA (Pin 5) | Data Output | Three-state serial output; MSB-first 16-bit result preceded by four zeros; output voltage swing referenced to VDD |
| CS (Pin 6) | Chip Select | Active-low dual-function pin: initiates sampling on falling edge and frames serial data transfer |
Key Features
| Feature | Design Value |
|---|---|
| First 16-bit ADC in SOT-23 | Enables high-resolution data acquisition in PCB area-limited designs (2.9 mm × 1.6 mm footprint) |
| No pipeline delay | Guarantees deterministic latency: conversion completes within fixed 8–9.6 μs window after CS assertion |
| VDD-derived reference | Removes external reference IC and associated decoupling, reducing BOM count and layout complexity |
| SPI/QSPI/μWire/DSP compatibility | Direct interface with industry-standard microcontrollers without protocol translation logic |
| Flexible power management | Switches between 3 mW operational mode and 0.5 μA shutdown via CS control-no additional control lines needed |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous vital sign monitoring in handheld pulse oximeters and ECG front-ends where size and battery life are critical. IC Role / Device Role / Timing Role: Unipolar ADC digitizing conditioned analog sensor outputs (e.g., photodiode current, electrode voltage) with 16-bit resolution and minimal power overhead. Use Value: 3 mW typical power at 100 kSPS extends battery runtime; 86 dB SNR preserves diagnostic signal fidelity; SOT-23 footprint fits compact sensor modules. | Use Scenario: Remote environmental monitoring nodes collecting temperature, pressure, and humidity over long intervals using intermittent sampling. IC Role / Device Role / Timing Role: Low-power ADC acquiring sensor data during brief wake-up windows, then entering 0.5 μA shutdown until next trigger. Use Value: Sub-microamp shutdown current minimizes quiescent drain; 100 kSPS capability supports burst-mode high-speed calibration; VDD-referenced input simplifies supply rail design. |
| Optical Sensor Interfaces | Mobile Communication Test Equipment |
Use Scenario: Digitizing fast transient outputs from photodiodes or position-sensitive detectors in optical encoders and laser alignment tools. IC Role / Device Role / Timing Role: High-bandwidth ADC capturing narrow pulses with 7 MHz full-power bandwidth and ≤400 ns acquisition time. Use Value: 86 dB SNR at 10 kHz ensures accurate amplitude measurement; no pipeline delay enables precise timestamping of event edges. | Use Scenario: Portable RF test adapters performing baseband signal analysis in field-deployable 5G small-cell verification tools. IC Role / Device Role / Timing Role: Precision ADC sampling IF or baseband signals prior to digital demodulation in FPGA-based receivers. Use Value: 16-bit resolution supports >90 dB dynamic range requirements; SPI interface allows direct connection to Xilinx Zynq PS GPIO; SOT-23 eases integration into multi-channel modular designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unipolar SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7683BRMZ-REEL | Same 16-bit SAR architecture but in 8-lead MSOP; 100 kSPS, 2.5 V–5.5 V, 3.5 mW typ at 2.5 V; includes internal reference buffer | Requires larger PCB area; better noise immunity due to separate GND pins and buffered reference path | Select when board layout allows MSOP and improved PSRR or reference stability is required over SOT-23 density |
| ADS8860IDRCT | Texas Instruments 16-bit SAR ADC in 3 mm × 3 mm VSSOP-10; 100 kSPS, 2.7 V–3.6 V only; 1.5 mW typ at 3 V; external reference required | Narrower supply range; mandates external precision reference; higher pin count increases routing complexity | Select when system already uses 3.3 V rails and external reference is available; avoid if VDD-referencing or 2.5 V operation is mandatory |
Compared with AD7683BRMZ-REEL and ADS8860IDRCT, the AD7680ARJZ-REEL7 uniquely delivers 16-bit resolution in the smallest commercial package (SOT-23) with zero external reference components and full 2.5 V–5.5 V flexibility-making it optimal for miniaturized, single-rail, cost-sensitive data acquisition.
Availability
AD7680ARJZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered medical instruments, remote industrial data loggers, optical sensor interfaces, and portable communication test equipment requiring stable component supply across extended production lifecycles.
Supply support for AD7680ARJZ-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.
The AD7680 belongs to the PulSAR® family of precision SAR ADCs designed specifically for space-constrained, low-power, high-resolution data acquisition in portable and distributed sensing systems.
FAQ
What is the absolute maximum analog input voltage for AD7680ARJZ-REEL7?
The absolute maximum analog input voltage for AD7680ARJZ-REEL7 is VDD + 0.3 V, with a lower limit of −0.3 V relative to GND. Exceeding this range risks forward-biasing internal ESD diodes and causing irreversible damage. The functional input range remains 0 V to VDD, as the device uses VDD as its reference. Always ensure analog signals stay within these bounds, especially during power-up sequencing.
Does AD7680ARJZ-REEL7 require an external voltage reference?
No, AD7680ARJZ-REEL7 does not require an external voltage reference. It derives its reference internally from the VDD supply, enabling a full-scale input range of 0 V to VDD. This eliminates the need for external reference ICs, decoupling capacitors, and associated layout area-reducing system cost and complexity while maintaining 16-bit linearity performance.
How many serial clock cycles are needed to read a full conversion from AD7680ARJZ-REEL7?
AD7680ARJZ-REEL7 supports two readout modes: 20 SCLK cycles for the 16-bit conversion result only (MSB-first), or 24 SCLK cycles to include four leading and four trailing zeros. The minimum conversion time is 8 μs (20 cycles at 2.5 MHz). CS must remain low throughout the entire cycle sequence, and data is clocked out on the falling edge of SCLK.
What is the guaranteed no-missing-codes resolution of AD7680ARJZ-REEL7 across temperature?
AD7680ARJZ-REEL7 guarantees no missing codes up to 15 bits across its full operating temperature range (−40°C to +85°C) when VDD = 4.096 V. At lower supplies (2.5 V–3.6 V), no missing codes are specified to 14 bits minimum. This ensures monotonicity and predictable behavior in closed-loop control and precision measurement applications without software correction.
Can AD7680ARJZ-REEL7 interface directly with 5 V logic microcontrollers?
Yes, AD7680ARJZ-REEL7 digital inputs (CS and SCLK) accept logic levels up to 7 V regardless of VDD, allowing direct connection to 5 V microcontrollers even when operating from a 2.5 V or 3.3 V supply. However, SDATA output levels remain referenced to VDD (e.g., 0 V to 3.3 V when VDD = 3.3 V), so level-shifting may be required for 5 V MCU input capture unless the MCU accepts 3.3 V–compatible logic thresholds.
AD7680ARJZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PulSAR®
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 100k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.5V ~ 5.5V
- Voltage - Supply, Digital:
- 2.5V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7680ARJZ-REEL7 FAQ
1.How can I place an order for AD7680ARJZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7680ARJZ-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 AD7680ARJZ-REEL7 reliable?
The price and inventory of AD7680ARJZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7680ARJZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7680ARJZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7680ARJZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7680ARJZ-REEL7?
AD7680ARJZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7680ARJZ-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 AD7680ARJZ-REEL7?
For technical support, including AD7680ARJZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7680ARJZ-REEL7 requirements.
6.How does Aetrix verify that AD7680ARJZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7680ARJZ-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 AD7680ARJZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7680ARJZ-REEL7?
All AD7680ARJZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7680ARJZ-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 AD7680ARJZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7680ARJZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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