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Analog Devices Inc. AD7910AKS-REEL
- Part No.:
- AD7910AKS-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD7910AKS-REEL.pdf
- Description:
- IC ADC 10BIT SRL 250KSPS SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
AD7910AKS-REEL from Analog Devices is a 10-bit, 250 kSPS successive approximation ADC in a 6-lead SC70 package, operating from a single 2.35 V to 5.25 V supply. It features 71 dB SNR at 100 kHz input, ±0.5 LSB INL/DNL, and 0–VDD analog input range - used for precision signal digitization in portable medical sensors and battery-powered data loggers.
For engineers reviewing the AD7910AKS-REEL datasheet, AD7910AKS-REEL pinout, AD7910AKS-REEL application, or AD7910AKS-REEL equivalent, key selection considerations include its 2.8 μs conversion time, 1 μA max standby current, SPI-compatible serial interface, internal VDD-referenced architecture, and SC70 footprint constraints for space-constrained embedded systems.
Technical Context
The AD7910AKS-REEL implements a charge redistribution SAR architecture with integrated track-and-hold, enabling accurate sampling of input frequencies up to 13.5 MHz (−3 dB) and 2 MHz (−0.1 dB). Its conversion is initiated on the falling edge of CS and clocked by SCLK, requiring exactly 14 SCLK cycles at 5 MHz for full 10-bit result output.
No pipeline delay exists; acquisition completes in ≤250 ns after conversion ends, and the device supports flexible power management via a dedicated power-down mode with 1 μA max current draw. The reference is derived solely from VDD, eliminating external reference components while maintaining 0 V to VDD input compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete digital codes for medium-precision sensor and control loop applications. |
| Throughput Rate | 250 kSPS maximum - supports real-time monitoring of fast transients in portable instrumentation. |
| SNR @ 100 kHz | 71 dB - enables clean digitization of low-amplitude signals in noisy environments like handheld diagnostics. |
| INL / DNL | ±0.5 LSB max - ensures monotonicity and <1 LSB linearity error across full temperature range (−40°C to +85°C). |
| Supply Range | 2.35 V to 5.25 V - compatible with Li-ion, 3.3 V, and 5 V system rails without level-shifting. |
| Power Dissipation | 4.2 mW max at 3 V / 250 kSPS - extends battery life in always-on sensing nodes. |
| Conversion Time | 2.8 μs max - allows tight timing margins in synchronous sampling systems with microcontroller-driven CS. |
Pinout & Package
AD7910AKS-REEL is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm × 0.9 mm), optimized for ultra-compact PCB layouts in wearable and portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply Input | Single 2.35–5.25 V rail powers analog core, digital logic, and serves as internal reference - eliminates external reference IC and reduces BOM count. |
| GND | Analog Ground Reference | Common return for all analog circuitry; must be routed separately from digital ground to preserve 71 dB SNR performance. |
| VIN | Analog Input Channel | Single-ended input with 0–VDD range and 20 pF input capacitance - requires low-impedance source (<130 Ω) to meet THD specs. |
| CS | Chip Select / Conversion Trigger | Active-low signal that initiates sampling on falling edge and frames serial data transfer - enables precise timing control in multi-channel systems. |
| SCLK | Serial Clock Input | Provides both interface clock and internal SAR conversion clock - supports variable throughput via SCLK frequency scaling (10 kHz–5 MHz). |
| SDATA | Serial Data Output | MSB-first 14-bit frame (4 leading zeros + 10-bit result + 2 trailing zeros) clocked on SCLK falling edge - compatible with SPI, QSPI, MICROWIRE, and DSP interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Guarantees deterministic latency: sampling occurs precisely on CS falling edge, with conversion complete in fixed 2.8 μs - critical for closed-loop control timing. |
| VDD-referenced architecture | Eliminates need for external voltage reference or reference buffer, reducing component count and layout area while maintaining full-scale input range of 0 to VDD. |
| 1 μA max standby current | Enables ultra-low-power operation between conversions - ideal for duty-cycled sensor nodes where average current must stay below 10 μA. |
| Wide supply range (2.35–5.25 V) | Supports direct interfacing to diverse power domains including partially discharged Li-ion cells (≥2.35 V) and regulated 3.3 V/5 V rails without LDO overhead. |
| SC70-6 footprint | Minimizes PCB area (2.5 mm²) and thermal resistance (θJA = 340.2°C/W) - suitable for thermally constrained, high-density portable assemblies. |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous acquisition of ECG or pulse oximetry analog waveforms in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned biopotential signals at 250 kSPS with 71 dB SNR to preserve clinical fidelity. Use Value: Low 4.2 mW power at 3 V enables >72-hour operation on a single CR2032 cell while maintaining diagnostic-grade signal integrity. |
Use Scenario: Long-term environmental monitoring using thermistor, humidity, and light sensors in remote field deployments. IC Role / Device Role / Timing Role: Low-power SAR ADC acquiring multiplexed analog channels with precise timestamping via microcontroller-controlled CS. Use Value: 1 μA max standby current and no external reference reduce total system quiescent draw to <5 μA - extending 10-year battery life. |
| Personal Digital Assistants | Optical Sensor Interfaces |
Use Scenario: Real-time digitization of touch panel voltage gradients or accelerometer outputs in compact PDAs. IC Role / Device Role / Timing Role: High-speed, space-efficient ADC handling burst-mode sampling during user interaction events. Use Value: SC70-6 package saves >40% board area versus MSOP alternatives, enabling thinner device profiles without sacrificing 250 kSPS throughput. |
Use Scenario: Converting photodiode or ambient light sensor outputs in smart lighting and display brightness control systems. IC Role / Device Role / Timing Role: Precision ADC capturing low-level photocurrent signals with minimal noise contribution (71 dB SNR). Use Value: 0–VDD input range and internal reference simplify front-end design - no op-amp gain stage or reference IC required for 0–3.3 V sensor outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7910BRMZ-REEL | Same 10-bit/250 kSPS specs but in 8-lead MSOP package (3 mm × 3 mm); higher θJA (205.9°C/W) and larger footprint. | Better thermal performance and easier hand-soldering; suited for prototyping or non-area-constrained industrial modules. | Select AD7910BRMZ-REEL when thermal margin or assembly yield outweighs PCB area constraints. |
| ADS7822U | 12-bit, 200 kSPS, 2.7–5.25 V supply; SPI-compatible but requires external reference; 8-lead SOIC package. | Higher resolution at lower speed; needs reference IC and decoupling - increases BOM and layout complexity. | Choose ADS7822U only if 12-bit resolution is mandatory and board space/thermal budget permits added components. |
Compared with AD7910BRMZ-REEL, AD7910AKS-REEL saves >70% PCB area and improves thermal resistance for sealed enclosures; versus ADS7822U, it trades 2 bits of resolution for guaranteed 250 kSPS, zero-reference simplicity, and ultra-compact size - making it optimal for miniaturized, battery-sensitive designs.
Availability
AD7910AKS-REEL is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, personal digital assistants, and optical sensor interfaces requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across production batches.
Supply support for AD7910AKS-REEL 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 AD7910AKS-REEL belongs to Analog Devices' micropower SAR ADC product line, designed specifically for space- and energy-constrained applications where precision, small size, and single-supply simplicity are critical - such as wearable health monitors and IoT edge nodes.
FAQ
What is the maximum sampling rate supported by the AD7910AKS-REEL?
The AD7910AKS-REEL supports a maximum throughput rate of 250 kSPS under specified conditions (VDD = 2.35 V to 5.25 V, fSCLK = 5 MHz, TA = −40°C to +85°C). This rate is achieved with a 14-cycle SCLK conversion sequence and is guaranteed across the full operating temperature and supply range - enabling reliable high-speed acquisition in portable instrumentation without oversampling penalties.
Does the AD7910AKS-REEL require an external voltage reference?
No, the AD7910AKS-REEL does not require an external voltage reference. Its reference is derived internally from the VDD supply, establishing a 0 V to VDD analog input range. This eliminates the need for external reference ICs, buffers, or associated passive components - simplifying design, reducing BOM cost, and minimizing PCB area while maintaining full-scale accuracy over the specified supply range.
What package type is used for the AD7910AKS-REEL?
The AD7910AKS-REEL uses a 6-lead SC70 package (2.0 mm × 1.25 mm × 0.9 mm), a surface-mount, ultra-small-outline package optimized for space-constrained applications. This package provides the smallest footprint among AD7910 variants and is distinct from the 8-lead MSOP option - offering superior board-area efficiency at the expense of slightly higher thermal resistance (θJA = 340.2°C/W).
How does the AD7910AKS-REEL manage power consumption during idle periods?
The AD7910AKS-REEL enters a full power-down mode when CS remains high and no conversion is active, drawing a maximum of 1 μA (typically 50 nA). This mode is controlled entirely through the standard serial interface - no additional control pins are needed. Power-down significantly reduces average system current in duty-cycled applications, directly extending battery life in portable devices where the ADC operates intermittently.
Is the AD7910AKS-REEL compatible with standard microcontroller SPI interfaces?
Yes, the AD7910AKS-REEL features an SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface. It outputs data MSB-first on the SDATA pin synchronized to the falling edge of SCLK, accepts CS as an active-low frame signal, and requires no special timing modes. Its 14-bit frame format (4 leading zeros + 10-bit result + 2 trailing zeros) is directly readable by standard SPI peripherals without bit-shifting or post-processing - ensuring seamless integration with ARM Cortex-M, PIC, and MSP430 microcontrollers.
AD7910AKS-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- SPI, DSP
- 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:
- SC-70-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7910AKS-REEL FAQ
1.How can I place an order for AD7910AKS-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7910AKS-REEL 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 AD7910AKS-REEL reliable?
The price and inventory of AD7910AKS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7910AKS-REEL is usually 5 days.
3.What payment methods are accepted for AD7910AKS-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7910AKS-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7910AKS-REEL?
AD7910AKS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7910AKS-REEL 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 AD7910AKS-REEL?
For technical support, including AD7910AKS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7910AKS-REEL requirements.
6.How does Aetrix verify that AD7910AKS-REEL is sourced from the original manufacturer or authorized distributors?
All AD7910AKS-REEL 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 AD7910AKS-REEL meets industry standards.
7.What is the process for return or replacement of AD7910AKS-REEL?
All AD7910AKS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7910AKS-REEL, 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 AD7910AKS-REEL part is unused and in its original packaging.
Return procedure for AD7910AKS-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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