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Analog Devices Inc. AD7898AR-10REEL
- Part No.:
- AD7898AR-10REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD7898AR-10REEL.pdf
- Description:
- IC ADC 12BIT SRL HS 5V 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,319
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Product details
Overview
AD7898AR-10REEL from Analog Devices is a 12-bit successive-approximation analog-to-digital converter (ADC) with 220 kSPS throughput, ±10 V bipolar input range, single 5 V supply operation, and integrated track/hold amplifier - designed for precision data acquisition in industrial control and test instrumentation systems.
For engineers reviewing the AD7898AR-10REEL datasheet, AD7898AR-10REEL pinout, AD7898AR-10REEL application, or AD7898AR-10REEL equivalent, this page delivers verified specifications, SOIC-8 package mapping, Mode 0/Mode 1 serial interface timing, SNR of 71 dB at 30 kHz, and confirmed alternatives for ±10 V signal digitization under 5 V supply constraints.
Technical Context
The AD7898AR-10REEL implements a laser-trimmed internal oscillator for Mode 0 conversion control and supports external SCLK-synchronized operation in Mode 1, enabling power-down capability. Its on-chip track/hold amplifier features 3.6 MHz full-power bandwidth and 24 kΩ minimum input resistance for ±10 V inputs.
It uses two's complement output coding, accepts an external 2.5 V reference (±5%), and provides flexible logic-level interfacing via dedicated VDRIVE pin (2.7–5.25 V), allowing direct connection to both 3 V and 5 V processors without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees no missing codes over full operating temperature range (–40°C to +85°C). |
| Throughput Rate | 220 kSPS max - achievable in both Mode 0 (internal clock) and Mode 1 (external SCLK up to 3.7 MHz). |
| Analog Input Range | ±10 V - fixed for AD7898AR-10REEL variant; enables direct digitization of industrial sensor outputs without external scaling. |
| Signal-to-(Noise+Distortion) | 71 dB min at fIN = 30 kHz - defines usable dynamic range for medium-frequency AC signals in measurement systems. |
| Power Dissipation | 22.5 mW max at VDD = 5 V - supports low-thermal-budget embedded designs and battery-powered instrumentation. |
| Reference Input | 2.5 V ± 5% - requires external buffered reference (e.g., AD780); on-chip buffering eliminates need for drive-strength compensation. |
| Package | 8-lead SOIC (R-8) - industry-standard footprint compatible with automated assembly and thermal management up to 450 mW. |
Pinout & Package
AD7898AR-10REEL is housed in an 8-lead Standard Small Outline IC (SOIC) package (package code R-8), with gull-wing leads, JEDEC MS-012AC compliant dimensions, and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF IN | Voltage reference input | Accepts buffered 2.5 V ±5% reference; on-chip buffer isolates reference source from ADC switching noise. |
| 2 - VIN | Analog input channel | ±10 V bipolar input with 24 kΩ min input resistance; resistive ladder front-end prevents dynamic charge injection into track/hold. |
| 3 - GND | Analog ground reference | Common return for track/hold, comparator, DAC, and digital logic; must be connected to clean analog ground plane. |
| 4 - SCLK | Serial clock input | Controls data readout timing; in Mode 1, also serves as conversion clock source (up to 3.7 MHz). |
| 5 - SDATA | Serial data output | 16-bit two's complement word (4 leading zeros + 12-bit result), MSB-first; three-state after final bit. |
| 6 - VDRIVE | Logic power supply | Sets I/O voltage level (2.7–5.25 V); decouples serial interface voltage from VDD, enabling mixed-voltage system interfacing. |
| 7 - CS / CONVST | Chip select / convert start | Active-low chip select in Mode 1; edge-triggered convert-start in Mode 0; dual-function pin simplifies controller GPIO usage. |
| 8 - VDD | Analog/digital power supply | Single 4.75–5.25 V supply powers entire device; 4.25 mA max static current enables predictable power budgeting. |
Key Features
| Feature | Design Value |
|---|---|
| High-speed serial interface with dual modes | Three-wire interface supports both Mode 0 (internal clock, 220 kSPS) and Mode 1 (external SCLK, power-down capable) - reduces controller resource overhead. |
| On-chip track/hold amplifier | 3.6 MHz full-power bandwidth (±10 V range) ensures accurate sampling of fast transients without external components. |
| VDRIVE logic-level independence | Separate VDRIVE pin allows 3 V microprocessor interfacing while VDD remains at 5 V - eliminates level shifters in mixed-supply systems. |
| Low-power operation | 22.5 mW max active power and 20 µA max power-down current enable portable and energy-constrained applications. |
| Bipolar ±10 V input range | Direct support for industrial sensor outputs (e.g., strain gauges, RTD bridges) without external gain/level-shift circuitry. |
Applications
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|---|---|
|
Use Scenario: Continuous monitoring of 4–20 mA loop signals converted to voltage via precision shunt resistor in PLC analog input modules. IC Role / Device Role / Timing Role: ADC digitizes conditioned ±10 V process signals at 220 kSPS with 71 dB SNR, synchronized to host controller via Mode 0 serial interface. Use Value: Eliminates external op-amp scaling stages and reduces BOM count by integrating track/hold, reference buffer, and serial interface in SOIC-8. |
Use Scenario: High-fidelity waveform capture in benchtop multimeters and signal analyzers requiring sub-LSB linearity across temperature. IC Role / Device Role / Timing Role: ADC performs precision digitization of calibrated reference signals using external 2.5 V reference (AD780), with Mode 1 enabling burst-mode acquisition and power-down between tests. Use Value: ±1 LSB integral linearity and 71 dB SINAD ensure metrology-grade accuracy without post-calibration correction tables. |
| Motor Drive Current Sensing | Portable Data Loggers |
|
Use Scenario: Isolated current sensing in servo drives using Hall-effect sensors with ±10 V output range feeding directly to ADC input. IC Role / Device Role / Timing Role: ADC samples motor phase currents at 220 kSPS in Mode 0, delivering 12-bit two's complement results via 3-wire SPI-compatible interface to FPGA controller. Use Value: 24 kΩ input resistance and high input impedance prevent loading of isolated sensor outputs, preserving signal integrity. |
Use Scenario: Battery-powered environmental sensor node acquiring temperature, pressure, and vibration data over extended periods. IC Role / Device Role / Timing Role: ADC operates in Mode 1 with SCLK-gated conversions and power-down between samples, reducing average current to <10 µA during idle intervals. Use Value: 20 µA max power-down current and 22.5 mW active dissipation extend battery life while maintaining 12-bit resolution for multi-sensor fusion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, ±10 V input ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892AR-10 | Same 12-bit resolution and ±10 V input, but 100 kSPS max throughput and no VDRIVE pin - requires matched logic voltage for serial interface. | Lacks power-down mode and lower throughput limits use in high-speed transient capture or burst-mode logging. | Select when cost sensitivity outweighs speed/power requirements and system uses uniform 5 V logic. |
| ADS7816U | 12-bit SAR ADC with 200 kSPS, ±10 V input, but requires external reference and lacks integrated track/hold - needs external THA for >100 kHz signals. | Higher THD (–72 dB vs –78 dB) and no on-chip track/hold limit fidelity in high-frequency acquisition scenarios. | Select when board space permits external THA and reference, and legacy TI ecosystem integration is preferred. |
Compared with AD7892AR-10 and ADS7816U, the AD7898AR-10REEL uniquely combines 220 kSPS throughput, integrated track/hold, VDRIVE flexibility, and power-down capability in a single SOIC-8 package - making it optimal for compact, mixed-voltage, high-fidelity data acquisition where board area and power efficiency are constrained.
Availability
AD7898AR-10REEL is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, and motor drive current sensing requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7898AR-10REEL 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, with design centers worldwide and ISO 9001-certified manufacturing.
The AD7898 product line was engineered for precision, low-power, single-supply data acquisition in space-constrained industrial and instrumentation systems - emphasizing integration of track/hold, reference buffering, and flexible serial interface in minimal footprint.
FAQ
What is the maximum sampling rate supported by the AD7898AR-10REEL?
The AD7898AR-10REEL supports a maximum throughput rate of 220 kSPS in both Mode 0 (internal clock) and Mode 1 (external SCLK). In Mode 1, this requires SCLK up to 3.7 MHz; in Mode 0, SCLK is not used for conversion timing but still clocks out data after conversion completes. The AD7898AR-10REEL achieves this rate while maintaining 71 dB SNR at 30 kHz input frequency.
Does the AD7898AR-10REEL require an external voltage reference?
Yes, the AD7898AR-10REEL requires an external 2.5 V ±5% reference applied to the REF IN pin. The device includes an on-chip buffer for this input, eliminating the need for external drive capability - a precision reference like the AD780 is recommended. The AD7898AR-10REEL does not generate or regulate its own reference voltage.
Can the AD7898AR-10REEL interface directly with a 3 V microcontroller?
Yes, the AD7898AR-10REEL supports direct 3 V microcontroller interfacing via its dedicated VDRIVE pin. When VDRIVE is tied to 3 V, all digital I/O (CS/CONVST, SCLK, SDATA) operate at 3 V logic levels - independent of the 5 V VDD supply - enabling seamless integration without level-shifting circuitry.
What is the input impedance of the AD7898AR-10REEL for ±10 V operation?
The AD7898AR-10REEL exhibits a minimum input resistance of 24 kΩ for its ±10 V input range (AD7898-10 variant), with high input impedance maintained across frequency due to its resistive ladder + buffered track/hold architecture. This value is specified in the datasheet and validated across –40°C to +85°C.
Is power-down functionality available on the AD7898AR-10REEL?
Yes, power-down is supported exclusively in Mode 1 operation. When CS remains high and no conversion is active, the AD7898AR-10REEL enters low-current state with IDD ≤20 µA over temperature. Recovery time from power-down is 4.33 µs, enabling rapid wake-up for burst-mode acquisition in portable instruments.
AD7898AR-10REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 220k
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7898AR-10REEL FAQ
1.How can I place an order for AD7898AR-10REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7898AR-10REEL 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 AD7898AR-10REEL reliable?
The price and inventory of AD7898AR-10REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7898AR-10REEL is usually 5 days.
3.What payment methods are accepted for AD7898AR-10REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7898AR-10REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7898AR-10REEL?
AD7898AR-10REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7898AR-10REEL 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 AD7898AR-10REEL?
For technical support, including AD7898AR-10REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7898AR-10REEL requirements.
6.How does Aetrix verify that AD7898AR-10REEL is sourced from the original manufacturer or authorized distributors?
All AD7898AR-10REEL 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 AD7898AR-10REEL meets industry standards.
7.What is the process for return or replacement of AD7898AR-10REEL?
All AD7898AR-10REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7898AR-10REEL, 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 AD7898AR-10REEL part is unused and in its original packaging.
Return procedure for AD7898AR-10REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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