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Analog Devices Inc. AD7911ARMZ-REEL7
- Part No.:
- AD7911ARMZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7911ARMZ-REEL7.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:970
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Product details
Overview
AD7911ARMZ-REEL7 from Analog Devices is a 10-bit, dual-channel, successive approximation analog-to-digital converter (ADC) operating from a single 2.35 V to 5.25 V supply, delivering 250 kSPS throughput with 61 dB SINAD at 100 kHz input and ±0.5 LSB integral nonlinearity - used in portable medical instruments for simultaneous battery voltage and sensor signal digitization.
For engineers reviewing the AD7911ARMZ-REEL7 datasheet, AD7911ARMZ-REEL7 pinout, AD7911ARMZ-REEL7 application, or AD7911ARMZ-REEL7 equivalent, key selection considerations include its 8-lead TSOT package, SPI/QSPI/MICROWIRE-compatible serial interface, no-pipeline-delay architecture, channel-selectable operation via DIN, and internal VDD-referenced full-scale range (0 V to VDD).
Technical Context
The AD7911ARMZ-REEL7 implements a track-and-hold amplifier with 290 ns acquisition time and 8.5 MHz full-power bandwidth, enabling accurate sampling of signals up to 100 kHz. Its conversion is initiated on the falling edge of CS and clocked by SCLK, requiring 14 cycles at 5 MHz for completion in ≤2.8 μs.
It uses a straight binary output format with two leading zeros, a channel identifier bit, an invalid bit, then 10 MSB-first data bits plus two trailing zeros. Power management includes a standby mode drawing ≤1 μA, and dynamic power scales linearly with throughput - 4 mW typical at 250 kSPS/3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete digital codes over full-scale input range. |
| Throughput Rate | 250 kSPS maximum - supports real-time sampling of audio-band and control-loop signals. |
| SINAD @ 100 kHz | 61 dB minimum - ensures ≥9.9 effective number of bits (ENOB) for precision measurement. |
| INL / DNL | ±0.5 LSB max each - guarantees monotonicity and no missing codes across full temperature range. |
| Supply Range | 2.35 V to 5.25 V - enables direct interfacing with Li-ion, 3.3 V, and 5 V system rails without level-shifting. |
| Channel Isolation | −90 dB typical - prevents crosstalk between VIN0 and VIN1 during simultaneous-sampling applications. |
| Power (3 V / 250 kSPS) | 6 mW maximum - reduces thermal load and extends battery life in portable instrumentation. |
Pinout & Package
AD7911ARMZ-REEL7 is housed in an 8-lead TSOT (Thin Small Outline Transistor) package, measuring 3.0 mm × 1.7 mm × 0.8 mm, with exposed pad for thermal enhancement and RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIN (Pin 1) | Serial data input | Selects channel (VIN0/VIN1) on falling SCLK edge; third MSB determines active input. |
| SCLK (Pin 2) | Serial clock input | Controls conversion timing and data transfer rate; also clocks internal ADC core. |
| CS (Pin 3) | Chip select (active low) | Initiates sampling on falling edge and frames 16-bit serial output stream. |
| DOUT (Pin 4) | Serial data output | Outputs 16-bit frame: two leading zeros + channel ID + invalid bit + 10-bit result + two trailing zeros. |
| VDD (Pin 5) | Power supply | Single 2.35–5.25 V rail powers analog and digital sections; also serves as internal reference. |
| GND (Pin 6) | Analog ground | Common reference for VIN0, VIN1, and internal circuitry; must be star-connected to minimize noise. |
| VIN0 (Pin 7) | Analog input channel 0 | Single-ended input with 0–VDD range; 20 pF input capacitance requires external drive impedance ≤1 kΩ. |
| VIN1 (Pin 8) | Analog input channel 1 | Single-ended input matched to VIN0; channel-to-channel offset error match ≤±0.3 LSB. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True successive approximation architecture enables deterministic latency: sampling and conversion complete within one CS cycle. |
| VDD-referenced conversion | Eliminates need for external reference; full-scale range automatically tracks supply, simplifying BOM and layout. |
| Flexible serial interface | Native SPI/QSPI/MICROWIRE/DSP compatibility allows drop-in integration with most microcontrollers and DSPs. |
| Low-power standby mode | 1 μA max shutdown current enables rapid wake-up (<1 μs power-up time) for duty-cycled sensing systems. |
| High channel isolation | −90 dB typical crosstalk supports independent measurement of high-gain and low-level signals on same device. |
Applications
| Portable Medical Sensors | Battery Monitoring Systems |
|---|---|
Use Scenario: Simultaneous acquisition of ECG electrode potentials and onboard temperature in handheld diagnostic devices. IC Role / Device Role / Timing Role: Dual-channel ADC samples two analog inputs with matched gain/offset and <30 ns inter-channel skew. Use Value: Eliminates dual-ADC layout complexity while maintaining >61 dB SNR and <±0.5 LSB INL across −40°C to +85°C. |
Use Scenario: Real-time tracking of lithium-ion cell voltage and charge current in smart battery packs. IC Role / Device Role / Timing Role: High-speed, low-drift digitization of two DC-coupled signals using internal VDD reference. Use Value: Enables accurate state-of-charge estimation with <0.5% full-scale error and no external reference component cost. |
| Industrial Data Loggers | Optical Sensor Interfaces |
Use Scenario: Multi-sensor environmental monitoring (pressure + humidity) in energy-constrained edge nodes. IC Role / Device Role / Timing Role: Low-power 250 kSPS ADC with 1 μA standby current and fast wake-up for burst-mode acquisition. Use Value: Extends battery life to >5 years in 1-sample-per-minute logging while preserving 10-bit resolution. |
Use Scenario: Digitizing outputs from dual photodiode arrays in optical smoke detectors. IC Role / Device Role / Timing Role: Wide-input-bandwidth (8.5 MHz) track-and-hold captures fast transient light pulses without aliasing. Use Value: Supports reliable detection of sub-millisecond smoke events with 71 dB SNR at 100 kHz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7921ARMZ-REEL7 | 12-bit resolution, 70 dB SINAD min, +1.5 LSB INL max, 3.2 μs conversion time | Higher precision required for vibration analysis or calibrated sensor interfaces | Select when ENOB > 11.5 bits is mandatory; shares identical pinout, timing, and interface protocol. |
| ADS7822U | 12-bit, 200 kSPS, 2.7–5.25 V supply, SPI-only interface, no channel ID bit in output stream | Lower throughput acceptable; requires firmware-side channel tracking instead of hardware-encoded identification | Choose for cost-sensitive designs where 50 kSPS margin is acceptable and channel demultiplexing can be handled in software. |
Compared with AD7921ARMZ-REEL7, the AD7911ARMZ-REEL7 trades 2-bit resolution and 9 dB SINAD for lower power (6 mW vs. 20 mW at 3 V) and faster conversion; versus ADS7822U, it adds hardware channel identification and 50 kSPS higher throughput at slightly higher unit cost.
Availability
AD7911ARMZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered medical instruments, industrial data loggers, optical sensor interfaces, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7911ARMZ-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, 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 AD7911ARMZ-REEL7 belongs to Analog Devices' precision SAR ADC product line, engineered for low-power, high-accuracy data acquisition in space- and energy-constrained applications such as portable diagnostics and wireless sensors.
FAQ
What is the maximum sampling rate supported by the AD7911ARMZ-REEL7?
The AD7911ARMZ-REEL7 supports a maximum throughput rate of 250 kSPS under specified conditions (VDD = 2.35 V to 5.25 V, fSCLK = 5 MHz). This rate is achieved with a 14-cycle SCLK conversion sequence, yielding a minimum conversion time of 2.8 μs. Performance remains guaranteed across the full −40°C to +85°C industrial temperature range.
Does the AD7911ARMZ-REEL7 require an external voltage reference?
No, the AD7911ARMZ-REEL7 uses an internal reference derived from VDD, establishing a full-scale input range of 0 V to VDD. This eliminates the need for external reference components, reduces board area, and simplifies power supply design - especially beneficial in compact, battery-operated systems where the AD7911ARMZ-REEL7 is commonly deployed.
How does channel selection work on the AD7911ARMZ-REEL7?
Channel selection on the AD7911ARMZ-REEL7 is performed via the DIN pin: the third MSB of the data written during the first SCLK cycle after CS assertion determines whether VIN0 or VIN1 is sampled. The DOUT stream includes a dedicated channel identifier bit, allowing unambiguous identification of the converted input without additional control lines or timing overhead.
What package type is used for the AD7911ARMZ-REEL7?
The AD7911ARMZ-REEL7 is packaged in an 8-lead TSOT (Thin Small Outline Transistor) with dimensions 3.0 mm × 1.7 mm × 0.8 mm and a thermally enhanced exposed pad. This RoHS-compliant, matte tin-finished package supports high-density PCB layouts and provides superior thermal performance compared to standard SOIC variants - critical for sustained 250 kSPS operation in confined enclosures.
Is the AD7911ARMZ-REEL7 compatible with standard SPI interfaces?
Yes, the AD7911ARMZ-REEL7 features a native SPI-compatible serial interface that also supports QSPI, MICROWIRE, and generic DSP protocols. It operates with CPOL = 0 and CPHA = 0, uses CS as frame synchronization, and outputs data on the falling edge of SCLK - enabling seamless integration with off-the-shelf microcontrollers without custom logic or level translation.
AD7911ARMZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-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:
- -
AD7911ARMZ-REEL7 FAQ
1.How can I place an order for AD7911ARMZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7911ARMZ-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 AD7911ARMZ-REEL7 reliable?
The price and inventory of AD7911ARMZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7911ARMZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7911ARMZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7911ARMZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7911ARMZ-REEL7?
AD7911ARMZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7911ARMZ-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 AD7911ARMZ-REEL7?
For technical support, including AD7911ARMZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7911ARMZ-REEL7 requirements.
6.How does Aetrix verify that AD7911ARMZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7911ARMZ-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 AD7911ARMZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7911ARMZ-REEL7?
All AD7911ARMZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7911ARMZ-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 AD7911ARMZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7911ARMZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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