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Analog Devices Inc. AD7819YRUZ-REEL7
- Part No.:
- AD7819YRUZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7819YRUZ-REEL7.pdf
- Description:
- IC ADC 8BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,837
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Product details
Overview
AD7819YRUZ-REEL7 from Analog Devices is an 8-bit, 200 kSPS successive approximation ADC with on-chip track-and-hold, 4.5 µs conversion time, and parallel 8-bit interface. It operates from a single 2.7 V to 5.5 V supply, supports analog input range of 0 V to VREF (1.2 V to VDD), and targets microprocessor- or DSP-based data acquisition in portable instrumentation and industrial control.
For engineers reviewing the AD7819YRUZ-REEL7 datasheet, AD7819YRUZ-REEL7 pinout, AD7819YRUZ-REEL7 application, or AD7819YRUZ-REEL7 equivalent, key selection criteria include guaranteed 8-bit no-missing-codes performance, ±0.5 LSB relative accuracy at −40°C to +125°C, automatic power-down mode (57.75 µW @ 1 kSPS), and TSSOP-16 packaging for space-constrained PCB layouts.
Technical Context
The AD7819YRUZ-REEL7 implements a charge redistribution DAC architecture with internal clock oscillator and three-state TTL-compatible digital outputs. Its conversion process begins on the falling edge of CONVST and completes in ≤4.5 µs, with BUSY signal indicating active conversion state.
It supports two operational modes: Mode 1 (continuous high-speed sampling up to 200 kSPS) and Mode 2 (automatic power-down between conversions), where power-up time is fixed at 1.5 µs and track/hold acquisition time is ≤100 ns - enabling accurate sampling of fast-changing signals when driven by low-impedance sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit with guaranteed no missing codes - ensures monotonic transfer function for reliable digital representation of analog inputs. |
| Max Throughput Rate | 200 kSPS - enables real-time sampling of signals up to ~30 kHz bandwidth per Nyquist criterion. |
| Conversion Time | 4.5 µs max - defines minimum inter-conversion interval in Mode 1; determines system latency in interrupt-driven read sequences. |
| Relative Accuracy | ±0.5 LSB max over −40°C to +125°C - specifies worst-case deviation from ideal transfer curve, critical for precision measurement calibration. |
| Supply Range | 2.7 V to 5.5 V - allows direct interfacing with 3.3 V or 5 V logic systems without level-shifting circuitry. |
| Power Dissipation | 10.5 mW at 3 V normal operation; 57.75 µW at 1 kSPS in auto power-down - enables battery-powered operation with >1-year runtime in low-duty-cycle sensing nodes. |
| SNR | 48 dB min at fIN = 30 kHz - quantifies usable dynamic range for digitizing medium-frequency analog waveforms. |
Pinout & Package
The AD7819YRUZ-REEL7 is housed in a 16-lead narrow-body thin shrink small outline package (TSSOP), measuring 5.0 mm × 4.4 mm × 1.1 mm, with 0.65 mm lead pitch and exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF (Pin 1) | Reference voltage input | Accepts 1.2 V to VDD; sets full-scale analog input range (0 V to VREF); requires local decoupling for noise-sensitive applications. |
| VIN (Pin 2) | Analog input | Single-ended input with 15 pF capacitance and ±1 µA leakage; must remain within −0.3 V to VDD + 0.3 V to avoid ESD diode conduction. |
| GND (Pin 3) | Common analog/digital ground | Shared AGND/DGND pin - mandates star grounding or low-impedance plane partitioning to minimize digital switching noise coupling into analog path. |
| CONVST (Pin 4) | Convert start control | Rising edge initiates 1.5 µs internal power-up pulse; falling edge triggers conversion - controls Mode 1 (high speed) vs. Mode 2 (auto power-down). |
| CS (Pin 5) | Chip select | Active-low enable for output drivers; used with RD to gate DB0–DB7 onto bus - supports memory-mapped or I/O-mapped microprocessor interfacing. |
| RD (Pin 6) | Read strobe | Active-low signal that latches conversion result onto DB0–DB7 when CS is low - timing-critical for avoiding bus contention in multi-device systems. |
| BUSY (Pin 7) | Conversion status indicator | Open-drain or push-pull output (per variant); goes high during conversion and low at completion - used for polling or interrupt generation in host firmware. |
| DB0–DB7 (Pins 8–15) | Parallel data outputs | Three-state TTL-compatible outputs; drive 8-bit microprocessor data bus directly - require external pull-ups only if interfacing with open-collector systems. |
| VDD (Pin 16) | Positive supply | 2.7 V to 5.5 V single supply; powers analog core, digital logic, and interface drivers - demands 0.1 µF ceramic + 10 µF bulk decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip track-and-hold | Eliminates need for external sample-hold amplifier; acquires input within 100 ns, supporting accurate sampling of fast transients. |
| Automatic power-down mode | Reduces average power to 57.75 µW at 1 kSPS - extends battery life in portable data loggers without sacrificing interface simplicity. |
| 8-bit parallel microprocessor interface | Direct connection to 8051, PIC16C6x/7x, or ADSP-21xx buses using only address decoding logic - cuts BOM cost and layout complexity vs. serial ADCs. |
| Guaranteed 8-bit linearity | ±0.5 LSB relative accuracy and ±0.5 LSB DNL over full temperature range - enables uncalibrated operation in industrial sensor front-ends. |
| Integrated clock oscillator | Removes requirement for external crystal or clock generator - simplifies design, reduces board area, and improves startup reliability. |
Applications
| Portable Medical Sensors | Industrial PLC Analog Input Modules |
|---|---|
Use Scenario: Battery-powered ECG front-end acquiring biopotential signals at 1–5 kSPS with low noise and minimal power draw. IC Role / Device Role / Timing Role: Primary 8-bit ADC digitizing conditioned analog leads; provides BUSY-triggered interrupt to MCU for low-latency waveform capture. Use Value: 57.75 µW power consumption at 1 kSPS enables multi-week operation on coin-cell batteries; ±0.5 LSB accuracy avoids factory calibration. | Use Scenario: DIN-rail mounted programmable logic controller reading 4–20 mA current loops and thermocouple signals in factory automation. IC Role / Device Role / Timing Role: High-reliability ADC in isolated analog input channel; interfaces via parallel bus to ARM Cortex-M4 host with deterministic read timing. Use Value: Guaranteed no-missing-codes and −40°C to +125°C operation ensure robustness in harsh environments; TSSOP-16 footprint fits dense I/O module layouts. |
| Automotive Cabin Environment Monitors | Test & Measurement Data Acquisition Cards |
Use Scenario: In-vehicle air quality sensor node measuring CO₂, humidity, and VOC levels using electrochemical and capacitive transducers. IC Role / Device Role / Timing Role: General-purpose ADC handling multiple sensor channels via multiplexer; powered from 3.3 V vehicle rail with automatic shutdown between readings. Use Value: Single-supply 2.7–5.5 V operation eliminates need for dedicated analog LDO; 4.5 µs conversion enables rapid channel scanning across 8 sensors. | Use Scenario: Low-cost benchtop oscilloscope or logic analyzer capturing analog waveforms up to 30 kHz with 8-bit resolution. IC Role / Device Role / Timing Role: Core sampling engine synchronized to FPGA-controlled trigger and memory controller; delivers 200 kSPS burst captures to SRAM buffer. Use Value: 48 dB SNR and −70 dB THD support clean digitization of audio-band signals; parallel interface enables >10 MB/s sustained data throughput to host processor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit parallel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7816U | 12-bit SAR ADC, SPI interface, 200 kSPS, 2.7–5.25 V supply - higher resolution but serial-only communication. | Requires FPGA or MCU with SPI peripheral; lacks native parallel bus compatibility and automatic power-down timing control. | Select ADS7816U only when resolution >8 bits is mandatory and system already uses SPI infrastructure. |
| MAX1113ECPP | 8-bit SAR ADC, parallel interface, 100 kSPS, 4.5–5.5 V supply - lower speed, narrower supply range, no auto power-down mode. | Not suitable for battery-powered designs; limited to 5 V systems; requires external clock for full-speed operation. | Choose MAX1113ECPP only for legacy 5 V-only industrial boards where AD7819YRUZ-REEL7's 2.7 V capability is unnecessary. |
Compared with ADS7816U and MAX1113ECPP, the AD7819YRUZ-REEL7 uniquely combines 8-bit parallel interface, 200 kSPS throughput, automatic power-down, and wide 2.7–5.5 V supply - making it optimal for cost-sensitive, space-constrained, and battery-aware embedded data acquisition where microprocessor bus simplicity is prioritized.
Availability
AD7819YRUZ-REEL7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC analog input modules, automotive cabin environment monitors, and test & measurement data acquisition cards requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7819YRUZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD7819YRUZ-REEL7 belongs to Analog Devices' precision data acquisition IC family, designed specifically for microprocessor- and DSP-connected systems needing low-power, easy-to-interface, temperature-robust ADCs in compact surface-mount packages.
FAQ
What is the operating temperature range specified for the AD7819YRUZ-REEL7?
The AD7819YRUZ-REEL7 is fully specified from −40°C to +125°C ambient temperature. All key parameters - including relative accuracy (±0.5 LSB), DNL (±0.5 LSB), and conversion time (≤4.5 µs) - are guaranteed across this extended industrial temperature range, making the AD7819YRUZ-REEL7 suitable for under-hood automotive, factory floor, and outdoor equipment applications without derating.
Does the AD7819YRUZ-REEL7 require an external clock source?
No, the AD7819YRUZ-REEL7 integrates a precision on-chip clock oscillator and does not require an external clock source. The internal oscillator drives the successive approximation register and timing logic, enabling standalone operation with only CONVST, CS, and RD control signals needed - simplifying system design and improving startup reliability compared to externally clocked ADCs.
How does the automatic power-down mode work in the AD7819YRUZ-REEL7?
In Mode 2, the AD7819YRUZ-REEL7 automatically enters power-down (1 µA typical) at the end of each conversion and powers up (1.5 µs) before the next conversion starts. This behavior is triggered by pulling CONVST low before BUSY falls. At 1 kSPS, this reduces average power to 57.75 µW - ideal for intermittent-sampling applications like battery-powered environmental monitors where the AD7819YRUZ-REEL7 remains idle >99.9% of the time.
Can the AD7819YRUZ-REEL7 interface directly with a 5 V microcontroller?
Yes, the AD7819YRUZ-REEL7 supports 5 V operation (VDD = 5 V ±10%) and features TTL-compatible outputs (VOH ≥ 2.4 V, VOL ≤ 0.4 V at 200 µA load). Its logic inputs (CONVST, CS, RD) accept VIH ≥ 2.0 V and VIL ≤ 0.4 V - ensuring seamless 5 V microcontroller interfacing without level shifters, provided VDD is set to 5 V and VREF is derived from the same rail.
What package type is used for the AD7819YRUZ-REEL7?
The AD7819YRUZ-REEL7 is supplied in a 16-lead thin shrink small outline package (TSSOP), designated RU-16 in Analog Devices' ordering guide. It measures 5.0 mm × 4.4 mm with 0.65 mm lead pitch and includes an exposed thermal pad - offering superior thermal performance and board-space efficiency over SOIC and DIP variants while maintaining compatibility with standard SMT reflow processes.
AD7819YRUZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7819YRUZ-REEL7 FAQ
1.How can I place an order for AD7819YRUZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7819YRUZ-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 AD7819YRUZ-REEL7 reliable?
The price and inventory of AD7819YRUZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7819YRUZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7819YRUZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7819YRUZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7819YRUZ-REEL7?
AD7819YRUZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7819YRUZ-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 AD7819YRUZ-REEL7?
For technical support, including AD7819YRUZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7819YRUZ-REEL7 requirements.
6.How does Aetrix verify that AD7819YRUZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7819YRUZ-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 AD7819YRUZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7819YRUZ-REEL7?
All AD7819YRUZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7819YRUZ-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 AD7819YRUZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7819YRUZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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