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Analog Devices Inc. AD7910ARMZ
- Part No.:
- AD7910ARMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7910ARMZ.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,824
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Product details
Overview
AD7910ARMZ 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 with 0 V to VDD analog input range-used in portable medical sensors and battery-powered data loggers.
For engineers reviewing the AD7910ARMZ datasheet, AD7910ARMZ pinout, AD7910ARMZ application, or AD7910ARMZ equivalent, key selection criteria include its SC70 footprint, no-pipeline-delay serial interface, guaranteed no-missed-codes performance, and low-power operation across 2.35–5.25 V supplies.
Technical Context
The AD7910ARMZ implements a charge redistribution SAR architecture with integrated track-and-hold, sampling on the falling edge of CS and completing conversion in 14 SCLK cycles (2.8 μs max at 5 MHz). Its reference is derived directly from VDD, eliminating external reference components and enabling full-scale input range from 0 V to VDD.
It supports SPI-/QSPI-/MICROWIRE-/DSP-compatible serial communication with MSB-first output format: four leading zeros followed by 10-bit data and two trailing zeros. Power-down mode reduces current to 1 μA max, and acquisition time is specified at ≤250 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - guarantees monotonic transfer function and no missed codes over full temperature range. |
| Throughput Rate | 250 kSPS maximum - enables real-time capture of signals up to ~125 kHz Nyquist bandwidth. |
| SNR @ 100 kHz | 71 dB - supports high-fidelity digitization of audio-band and sensor signals with low noise floor. |
| Power Dissipation | 4.2 mW max at 3 V/250 kSPS - enables multi-hour operation in coin-cell–powered instrumentation. |
| Analog Input Range | 0 V to VDD - simplifies signal conditioning by eliminating level-shifting for rail-to-rail sources. |
| Conversion Time | 2.8 μs max - ensures deterministic timing for time-critical control loops and synchronized sampling. |
| Integral Nonlinearity | ±0.5 LSB max - maintains accuracy in precision measurement applications such as medical diagnostics. |
Pinout & Package
AD7910ARMZ is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm × 0.9 mm), optimized for space-constrained portable electronics. Pin assignments are validated per Analog Devices Rev. C datasheet Figure 5 and Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power Supply Input | Single 2.35–5.25 V supply powering analog core, reference, and digital interface; also serves as ADC reference voltage source. |
| GND (Pin 2) | Analog Ground | Common return for analog circuitry; must be isolated from digital ground to preserve SNR and INL performance. |
| VIN (Pin 3) | Analog Input | Single-ended input with 20 pF input capacitance; accepts 0 V to VDD range without external scaling. |
| SCLK (Pin 4) | Serial Clock Input | Controls both data readout timing and internal SAR conversion clock; supports up to 5 MHz operation. |
| SDATA (Pin 5) | Data Output | Three-state serial output delivering 10-bit result MSB-first with fixed 4-zero prefix and 2-zero suffix. |
| CS (Pin 6) | Chip Select | Active-low signal initiating sample acquisition on falling edge and framing serial data transfer window. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Guaranteed single-cycle conversion with precise sampling instant controlled by CS falling edge-critical for deterministic control systems. |
| VDD-referenced architecture | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area in compact designs. |
| Low-power standby mode | 1 μA max quiescent current enables >1-year battery life in intermittent-sampling applications like environmental monitors. |
| Flexible supply range | Operates down to 2.35 V-compatible with Li-ion, Li-Po, and dual-AA configurations without LDO overhead. |
| High-speed serial interface | SPI/QSPI/MICROWIRE/DSP compatibility allows direct connection to common microcontrollers without protocol translation logic. |
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 analog-to-digital converter performing single-ended sampling at 250 kSPS with precise CS-triggered acquisition. Use Value: 71 dB SNR preserves clinical-grade signal fidelity; 3.6 mW power at 3 V extends runtime between charges. |
Use Scenario: Long-term environmental monitoring using thermistor, humidity, and light sensors powered by coin cells. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated periodically via microcontroller CS pulses to minimize average current draw. Use Value: 1 μA max standby current enables multi-year deployment; SC70 footprint saves PCB area in ultra-compact enclosures. |
| Optical Sensor Interfaces | Industrial Handheld Testers |
Use Scenario: Digitizing photodiode or ambient light sensor outputs in smart lighting controls and gesture recognition modules. IC Role / Device Role / Timing Role: High-input-bandwidth (13.5 MHz) front-end ADC capturing fast transient optical events without aliasing. Use Value: Full-power bandwidth supports accurate pulse-width and rise-time measurements; 0–VDD input range matches op-amp output swing. |
Use Scenario: Portable multimeters and insulation testers requiring calibrated DC voltage and current measurement. IC Role / Device Role / Timing Role: Precision 10-bit acquisition stage with ±0.5 LSB INL ensuring traceable accuracy across temperature. Use Value: Guaranteed no-missed-codes behavior prevents step errors in display updates; SC70 package enables modular probe head design. |
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 | Same die, 8-lead MSOP package (3 mm × 3 mm); higher θJA (205.9°C/W vs. 340.2°C/W). | Preferred where board space permits larger footprint and thermal relief is needed for sustained throughput. | Select AD7910BRMZ when MSOP handling or thermal margin outweighs size constraints. |
| ADS7822U | 12-bit, 200 kSPS, 2.7–5.25 V supply; SPI-compatible but requires external reference and has 3.5 μs conversion time. | Used where higher resolution justifies added BOM cost and layout complexity for reference circuitry. | Choose ADS7822U only if 12-bit resolution is mandatory and external reference integration is acceptable. |
Compared with AD7910BRMZ, the AD7910ARMZ offers 40% smaller PCB area and lower thermal resistance in hold mode, while ADS7822U trades off speed and integrated reference for resolution-making AD7910ARMZ optimal for size- and power-sensitive 10-bit applications.
Availability
AD7910ARMZ is available at Aetrix Electronics and suitable for battery-powered systems, portable medical instruments, and optical sensor interfaces requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for AD7910ARMZ 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, headquartered in Norwood, MA.
The AD7910ARMZ belongs to Analog Devices' micropower SAR ADC product line, designed specifically for space- and energy-constrained applications including portable instrumentation and wireless sensor nodes.
FAQ
What is the maximum sampling rate supported by the AD7910ARMZ?
The AD7910ARMZ supports a maximum throughput rate of 250 kSPS, achieved with a 5 MHz SCLK and 14 SCLK-cycle conversion time. This rate is fully specified across the −40°C to +85°C temperature range and 2.35 V to 5.25 V supply voltage, enabling reliable high-speed acquisition in portable test equipment and sensor hubs.
Does the AD7910ARMZ require an external voltage reference?
No, the AD7910ARMZ uses an internal VDD-derived reference, making it self-contained with no external reference required. This allows the analog input range to span 0 V to VDD, simplifying design and reducing component count-particularly valuable in SC70-based space-limited layouts where the AD7910ARMZ is commonly deployed.
How does the AD7910ARMZ manage power consumption during idle periods?
The AD7910ARMZ enters a full power-down mode with ≤1 μA maximum supply current when CS remains high and SCLK is inactive. This feature is essential for extending battery life in intermittent-sampling applications such as environmental data loggers, where the AD7910ARMZ spends most of its operational time in this ultra-low-quiescent state.
What serial interface protocols is the AD7910ARMZ compatible with?
The AD7910ARMZ supports SPI®, QSPI™, MICROWIRE™, and DSP-compatible serial interfaces through its SCLK, CS, and SDATA pins. Its MSB-first output format-four leading zeros followed by 10 data bits and two trailing zeros-is electrically and timing-compatible with standard microcontroller SPI peripherals without additional glue logic.
Is the AD7910ARMZ pin-compatible with other members of the AD7910/AD7920 family?
Yes, the AD7910ARMZ shares identical 6-lead SC70 pinout with AD7920ARMZ, differing only in resolution (10-bit vs. 12-bit) and dynamic performance specs. Both devices use the same VDD, GND, VIN, SCLK, SDATA, and CS connections, allowing hardware reuse across resolution tiers in designs where firmware handles bit-depth differences.
AD7910ARMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 250k
- 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:
- 2.35V ~ 5.25V
- Voltage - Supply, Digital:
- 2.35V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7910ARMZ FAQ
1.How can I place an order for AD7910ARMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7910ARMZ 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 AD7910ARMZ reliable?
The price and inventory of AD7910ARMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7910ARMZ is usually 5 days.
3.What payment methods are accepted for AD7910ARMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7910ARMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7910ARMZ?
AD7910ARMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7910ARMZ 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 AD7910ARMZ?
For technical support, including AD7910ARMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7910ARMZ requirements.
6.How does Aetrix verify that AD7910ARMZ is sourced from the original manufacturer or authorized distributors?
All AD7910ARMZ 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 AD7910ARMZ meets industry standards.
7.What is the process for return or replacement of AD7910ARMZ?
All AD7910ARMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7910ARMZ, 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 AD7910ARMZ part is unused and in its original packaging.
Return procedure for AD7910ARMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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