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Analog Devices Inc. AD7910AKS-REEL7
- Part No.:
- AD7910AKS-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD7910AKS-REEL7.pdf
- Description:
- IC ADC 10BIT SRL 250KSPS SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
AD7910AKS-REEL7 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, 3.6 mW typical power at 3 V/250 kSPS, and internal VDD-referenced conversion enabling 0 V to VDD analog input range. It serves in portable medical sensors and battery-powered data loggers requiring low-power, high-speed digitization.
For engineers reviewing the AD7910AKS-REEL7 datasheet, AD7910AKS-REEL7 pinout, AD7910AKS-REEL7 application, or AD7910AKS-REEL7 equivalent, key selection criteria include guaranteed no-missed-codes performance, 250 ns track-and-hold acquisition time, SPI-compatible serial interface with no pipeline delay, and SC70 footprint compatibility for space-constrained embedded designs.
Technical Context
The AD7910AKS-REEL7 implements a charge redistribution DAC-based successive approximation architecture with on-chip track-and-hold. Conversion is initiated on the falling edge of CS and clocked by SCLK, requiring exactly 14 SCLK cycles (2.8 μs max at 5 MHz) with zero pipeline latency.
It uses VDD as its reference source-eliminating external reference components-and supports flexible serial clock speed management: throughput rate scales directly with SCLK frequency while maintaining full 10-bit accuracy and ±0.5 LSB INL/±0.5 LSB DNL over −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - guarantees monotonic output and no missing codes across full temperature range. |
| Throughput Rate | 250 kSPS maximum - enables real-time sampling of signals up to 125 kHz Nyquist bandwidth. |
| SNR @ 100 kHz | 71 dB - supports accurate digitization of medium-frequency sensor outputs with minimal noise floor impact. |
| Power @ 3 V / 250 kSPS | 3.6 mW typical - allows continuous operation in coin-cell–powered devices for >1 year at 100 SPS average rate. |
| INL / DNL | ±0.5 LSB max each - ensures linearity-critical applications like precision thermistor or strain gauge measurement meet 0.1% full-scale error budgets. |
| Analog Input Range | 0 V to VDD - simplifies signal conditioning by eliminating level-shifting circuitry for unipolar industrial sensors. |
| Standby Current | 1 μA max - enables ultra-low-power wake-on-event architectures with sub-μW quiescent system power. |
Pinout & Package
AD7910AKS-REEL7 is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm, 0.5 mm pitch), optimized for high-density PCB layouts in portable instrumentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power Supply Input | Single 2.35 V–5.25 V rail powers analog core, digital interface, and internal reference; no separate AVDD/DVDD required. |
| 2 - GND | Analog Ground Reference | Common return for all analog circuitry; must be connected to low-impedance ground plane to maintain 71 dB SNR performance. |
| 3 - VIN | Analog Input Channel | Single-ended input accepting 0 V to VDD range; 20 pF input capacitance requires careful driver impedance matching for <250 ns acquisition. |
| 4 - SCLK | Serial Clock Input | Drives both data transfer and internal SAR conversion timing; supports 10 kHz–5 MHz range for adjustable throughput/power trade-off. |
| 5 - SDATA | Serial Data Output | MSB-first 14-bit frame (4 leading zeros + 10-bit result + 2 trailing zeros); three-state capable for bus sharing. |
| 6 - CS | Chip Select / Conversion Trigger | Active-low signal initiates sampling on falling edge and frames serial data; minimum 10 ns pulse width required. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Guaranteed deterministic 2.8 μs conversion time with immediate sample-to-data availability-critical for closed-loop control timing. |
| VDD-referenced architecture | Eliminates external reference IC and associated layout complexity while delivering full-scale dynamic range from 0 V to supply rail. |
| Flexible serial clock scaling | SCLK frequency directly sets throughput; reducing clock from 5 MHz to 1 MHz cuts average power by ~70% without sacrificing resolution or linearity. |
| Ultra-low standby current | 1 μA max deep-sleep mode enables microcontroller-gated sampling strategies with <100 nA average system current in duty-cycled applications. |
| SC70 footprint | 6-pin, 2.0 mm × 1.25 mm package reduces board area by >50% vs. MSOP alternatives-ideal for wearable biosensors and compact IoT nodes. |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous acquisition of ECG or pulse oximetry analog waveforms in handheld diagnostic tools. IC Role / Device Role / Timing Role: Primary ADC capturing biopotential signals at 250 kSPS with 10-bit fidelity and sub-μs timing determinism. Use Value: 71 dB SNR preserves clinical-grade waveform integrity; 3.6 mW power at 3 V extends AA battery life to >6 months in intermittent-use mode. |
Use Scenario: Environmental monitoring node logging temperature, humidity, and light intensity over weeks on lithium-thionyl chloride cells. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated only during scheduled sensor reads, leveraging CS-triggered sampling and 1 μA standby. Use Value: No external reference or decoupling complexity reduces BOM count; SC70 size enables integration into 12 mm × 12 mm sensor modules. |
| Industrial Process Transmitters | Optical Sensor Interfaces |
Use Scenario: 4–20 mA loop-powered field transmitter digitizing RTD or thermocouple outputs in hazardous locations. IC Role / Device Role / Timing Role: High-accuracy front-end ADC with guaranteed ±0.5 LSB INL supporting 0.1% total measurement uncertainty. Use Value: 0 V to VDD input range accepts conditioned sensor outputs directly-no level-shifting op-amps needed-reducing thermal drift errors. |
Use Scenario: Digitizing photodiode or ambient light sensor outputs in smart lighting controls and display brightness adaptation. IC Role / Device Role / Timing Role: Fast-response ADC handling rapid light transients (e.g., flicker detection) with 250 ns track-and-hold acquisition. Use Value: Full Power Bandwidth of 13.5 MHz (−3 dB) ensures faithful capture of fast optical events without aliasing or settling artifacts. |
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 silicon die, but in 8-lead MSOP package (3 mm × 3 mm); identical electrical specs and timing. | Preferred where hand-soldering or test probing is required; larger pad spacing eases assembly and debug access. | Select AD7910BRMZ-REEL when board-level rework, thermal relief, or legacy MSOP footprint compatibility is prioritized over miniaturization. |
| ADS7822U | 12-bit, 200 kSPS, 2.7–5.25 V supply; SPI interface; no internal reference-requires external VREF; higher THD (−70 dB vs. −72 dB). | Better resolution for precision instrumentation, but lower speed and added reference design overhead. | Choose ADS7822U only if 12-bit resolution is mandatory and 50 kSPS throughput reduction is acceptable; avoid when minimizing component count is critical. |
Compared with AD7910BRMZ-REEL, AD7910AKS-REEL7 saves >60% PCB area with identical performance; versus ADS7822U, it trades 2-bit resolution for guaranteed no-missed-codes behavior, 50 kSPS higher throughput, and elimination of external reference components-making it optimal for cost- and space-sensitive portable systems.
Availability
AD7910AKS-REEL7 is available at Aetrix Electronics and suitable for battery-powered systems, portable medical instruments, and optical sensor interfaces requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AD7910AKS-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 AD7910AKS-REEL7 belongs to Analog Devices' precision SAR ADC product line, engineered specifically for ultra-low-power, high-speed data acquisition in space- and energy-constrained embedded systems.
FAQ
What is the guaranteed operating temperature range for AD7910AKS-REEL7?
The AD7910AKS-REEL7 is specified for operation from −40°C to +85°C across all electrical parameters including INL, DNL, SNR, and throughput rate. This industrial-grade temperature range is validated per A-grade specifications in the Rev. C datasheet and applies to the SC70 package variant without derating.
Does AD7910AKS-REEL7 require an external voltage reference?
No, AD7910AKS-REEL7 uses an internal VDD-derived reference, enabling a true single-supply 0 V to VDD analog input range. This eliminates external reference components, reduces BOM cost, and avoids reference-related drift or noise-confirmed in the General Description and Circuit Information sections of the datasheet.
How many clock cycles does AD7910AKS-REEL7 need to complete one conversion?
AD7910AKS-REEL7 requires exactly 14 SCLK cycles for a full conversion, as stated in the Specifications table (Conversion Time = 2.8 μs max at 5 MHz). This fixed-cycle count ensures deterministic timing-critical for synchronized multi-channel sampling or real-time control loops.
Can AD7910AKS-REEL7 interface directly with common microcontrollers?
Yes, AD7910AKS-REEL7 features an SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface with standard CS/SCLK/SDATA signaling. Its 3-wire interface, MSB-first 14-bit frame format, and no pipeline delay enable plug-and-play integration with ARM Cortex-M, PIC, and MSP430 MCUs using native SPI peripherals.
What is the maximum analog input frequency supported by AD7910AKS-REEL7?
AD7910AKS-REEL7 has a full power bandwidth of 13.5 MHz (−3 dB) and 2 MHz (−0.1 dB), allowing accurate digitization of analog signals up to several megahertz. However, for Nyquist-compliant sampling at 250 kSPS, input frequencies must remain below 125 kHz-verified by SINAD performance plots in Figure 9 of the datasheet.
AD7910AKS-REEL7 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-REEL7 FAQ
1.How can I place an order for AD7910AKS-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7910AKS-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 AD7910AKS-REEL7 reliable?
The price and inventory of AD7910AKS-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7910AKS-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7910AKS-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7910AKS-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7910AKS-REEL7?
AD7910AKS-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7910AKS-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 AD7910AKS-REEL7?
For technical support, including AD7910AKS-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7910AKS-REEL7 requirements.
6.How does Aetrix verify that AD7910AKS-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7910AKS-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 AD7910AKS-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7910AKS-REEL7?
All AD7910AKS-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7910AKS-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 AD7910AKS-REEL7 part is unused and in its original packaging.
Return procedure for AD7910AKS-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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