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Analog Devices Inc. AD7441BRTZ-REEL7
- Part No.:
- AD7441BRTZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8
- Datasheet:
-
AD7441BRTZ-REEL7.pdf
- Description:
- IC ADC 10BIT SAR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,271
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Product details
Overview
AD7441BRTZ-REEL7 from Analog Devices is a 10-bit, pseudo-differential, successive approximation register (SAR) analog-to-digital converter (ADC) in an 8-lead SOT-23 package. It operates from a single 2.7 V to 5.25 V supply, achieves 1 MSPS throughput, delivers 61 dB minimum SINAD at 100 kHz input, and consumes only 4 mW max at 3 V - designed for precision data acquisition in space-constrained, battery-powered systems.
For engineers reviewing the AD7441BRTZ-REEL7 datasheet, AD7441BRTZ-REEL7 pinout, AD7441BRTZ-REEL7 application, or AD7441BRTZ-REEL7 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation value, and two confirmed alternative parts with documented functional and parametric differences.
Technical Context
The AD7441BRTZ-REEL7 implements a true SAR architecture with no pipeline delay, using dual capacitive DACs and a differential track-and-hold amplifier capable of handling 3.5 MHz input signals. Its conversion is initiated by the falling edge of CS and clocked entirely by the external SCLK signal - enabling precise sampling control and flexible throughput scaling via serial clock frequency.
It features a pseudo-differential input structure where VIN– sets a dc reference point (not fully differential), supports external reference voltages from 100 mV to VDD, and uses straight binary output coding. The device enters full power-down mode (<1 μA) via the same serial interface, eliminating need for dedicated shutdown pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1,024 discrete output codes; sufficient for medium-precision sensor digitization without oversampling overhead. |
| Throughput Rate | 1 MSPS maximum - enables real-time capture of signals up to ~200 kHz Nyquist bandwidth in continuous sampling mode. |
| SINAD @ 100 kHz | 61 dB min - corresponds to ~10.2 ENOB; suitable for transducer interfaces requiring >10-bit effective resolution at audio-band frequencies. |
| Power Dissipation | 4 mW max at 3 V / 1 MSPS - allows integration into ultra-low-power portable instrumentation without thermal derating concerns. |
| INL / DNL | ±0.5 LSB max each - guarantees monotonicity and no missing codes across full 10-bit range, critical for closed-loop control feedback paths. |
| Reference Range | 100 mV to VDD - permits direct use of low-voltage references (e.g., 1.25 V bandgap) or rail-to-rail scaling without external level-shifting. |
| Serial Interface | SPI-/QSPI-/MICROWIRE-/DSP-compatible - interoperates with common microcontrollers without protocol translation logic. |
Pinout & Package
AD7441BRTZ-REEL7 is housed in an 8-lead SOT-23 package (JEDEC MO-178AA), measuring 2.9 mm × 1.6 mm × 1.1 mm, with gull-wing leads optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive supply input | Accepts 2.7 V–5.25 V single supply; requires local 0.1 μF ceramic + 10 μF tantalum decoupling for stable conversion performance. |
| SCLK (Pin 2) | Serial clock input | Drives both data transfer and internal SAR conversion timing; supports up to 18 MHz clock rate for 1 MSPS operation. |
| SDATA (Pin 3) | Serial data output | Provides 10-bit result MSB-first as 4 leading zeros + 10 data bits + 2 trailing zeros; three-state controlled by CS. |
| CS (Pin 4) | Chip select / conversion trigger | Active-low signal that initiates sampling on falling edge and frames serial read; also controls output enable state. |
| GND (Pin 5) | Analog ground reference | Common return for all analog circuitry including VIN+, VIN–, and VREF; must be tied to clean system AGND plane. |
| VIN– (Pin 6) | Inverting analog input | Sets pseudo-ground reference for VIN+; typically connected to dc bias (e.g., VREF/2) or AGND to define common-mode point. |
| VIN+ (Pin 7) | Noninverting analog input | Primary signal input; accepts differential span up to VREF with common-mode range dependent on VDD (−0.1 V to +1.5 V). |
| VREF (Pin 8) | External reference input | Defines full-scale range; supports 100 mV–VDD range with ±1% tolerance requirement for specified DC accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture ensures deterministic 16-SCLK-cycle conversion time (888 ns @ 18 MHz), enabling precise time-critical sampling in real-time control loops. |
| Pseudo-differential input | Rejects common-mode noise on VIN+ and VIN– while simplifying front-end design versus fully differential ADCs - no matched resistor networks required. |
| Flexible power management | Power scales linearly with SCLK frequency; combined with 1 μA power-down mode, enables dynamic throughput/power trade-offs in duty-cycled systems. |
| Wide supply range | 2.7 V–5.25 V operation supports direct interfacing with Li-ion batteries (3.0–4.2 V), 3.3 V logic, and 5 V legacy systems without LDOs. |
| High-speed serial interface | SPI-compatible 4-wire interface eliminates parallel bus overhead and reduces PCB trace count - ideal for microcontroller-based portable designs. |
Applications
| Transducer Interface | Battery-Powered Systems |
|---|---|
Use Scenario: Digitizing outputs from strain gauges, RTDs, or pressure sensors in handheld test equipment. IC Role / Device Role / Timing Role: ADC front-end capturing low-bandwidth analog signals with high DC accuracy and low power. Use Value: ±0.5 LSB INL/DNL and 61 dB SINAD ensure measurement repeatability within 0.1% FS error; 4 mW power enables >10-hour runtime on coin-cell batteries. |
Use Scenario: Monitoring battery voltage, temperature, and charge current in wearable health monitors. IC Role / Device Role / Timing Role: Low-power sensor hub ADC performing periodic wake-up conversions during sleep cycles. Use Value: 1 μA power-down current minimizes quiescent drain; pseudo-differential input rejects noise from shared battery return paths. |
| Data Acquisition Systems | Portable Instrumentation |
Use Scenario: Channel multiplexing in 4–8 channel portable DAQ units for field diagnostics. IC Role / Device Role / Timing Role: High-throughput ADC per channel enabling synchronized sampling at 1 MSPS aggregate rate. Use Value: 1 MSPS throughput supports 100 kSPS per channel across 10 channels with margin; SPI interface simplifies FPGA or MCU firmware integration. |
Use Scenario: Signal conditioning and digitization in handheld oscilloscopes or multimeters. IC Role / Device Role / Timing Role: Precision ADC core delivering calibrated amplitude accuracy with minimal board area. Use Value: 8-lead SOT-23 footprint saves >60% board space vs. MSOP; 2.7 V operation extends usable battery range down to end-of-life voltage. |
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 |
|---|---|---|---|
| AD7451BRTZ-REEL7 | 12-bit resolution, 70 dB SINAD @ 100 kHz, same package and pinout - higher precision at identical power and speed. | Used where >10-bit ENOB is required (e.g., high-fidelity audio capture, precision metrology). | Select when resolution and dynamic range outweigh cost sensitivity; shares layout and firmware compatibility. |
| ADS7822U | 12-bit, 200 kSPS max, 3.3 V only, SPI interface - lower speed but superior 72 dB SINAD and integrated reference. | Preferred for low-throughput, high-SNR applications with fixed 3.3 V rails and no external reference sourcing. | Choose for simplified BOM (no external VREF needed) and better noise performance below 200 kSPS; not drop-in due to speed and supply limits. |
Compared with AD7441BRTZ-REEL7, AD7451BRTZ-REEL7 offers 2 extra bits of resolution and +9 dB SINAD at same power and footprint, while ADS7822U trades speed for higher SNR and reference integration - making each optimal for distinct precision/speed/power trade-offs.
Availability
AD7441BRTZ-REEL7 is available at Aetrix Electronics and suitable for transducer interface, battery-powered systems, and portable instrumentation requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for AD7441BRTZ-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.
The AD7441/AD7451 product line was engineered for compact, low-power data acquisition in portable and battery-operated equipment - emphasizing small footprint, wide supply flexibility, and SPI-native interfacing without external support components.
FAQ
What is the maximum sampling rate supported by the AD7441BRTZ-REEL7?
The AD7441BRTZ-REEL7 supports a maximum throughput rate of 1 MSPS, achieved with an 18 MHz serial clock (SCLK). At this rate, conversion time is fixed at 16 SCLK cycles (888 ns), and the device maintains full 10-bit accuracy with 61 dB SINAD at 100 kHz input frequency. Lower SCLK frequencies proportionally reduce throughput and power consumption.
Does the AD7441BRTZ-REEL7 require an external voltage reference?
Yes, the AD7441BRTZ-REEL7 requires an external reference applied to the VREF pin. It accepts reference voltages from 100 mV to VDD, with 2.5 V being the specified nominal value. The reference must have ±1% tolerance for guaranteed DC accuracy; typical implementations use precision shunt or series references decoupled with ≥0.1 μF ceramic capacitance.
What package type is used for the AD7441BRTZ-REEL7?
The AD7441BRTZ-REEL7 is packaged in an 8-lead SOT-23 (Small Outline Transistor) case per JEDEC MO-178AA, with gull-wing leads and dimensions of 2.9 mm × 1.6 mm × 1.1 mm. This package is lead-free, RoHS-compliant, and optimized for high-density PCB layouts and reflow soldering processes.
How does the pseudo-differential input of the AD7441BRTZ-REEL7 differ from a fully differential input?
The AD7441BRTZ-REEL7's pseudo-differential input uses VIN– as a dc reference point (e.g., grounded or biased) rather than a true complementary signal path. VIN+ carries the active signal while VIN– establishes the common-mode baseline - providing common-mode noise rejection without requiring matched input drivers or differential amplifiers, unlike fully differential architectures.
Can the AD7441BRTZ-REEL7 operate from a 3.3 V supply?
Yes, the AD7441BRTZ-REEL7 is fully specified for operation from 2.7 V to 5.25 V, including standard 3.3 V supplies. At 3.3 V, it delivers 4 mW maximum power dissipation at 1 MSPS, maintains 61 dB SINAD at 100 kHz, and supports logic thresholds compatible with 3.3 V microcontrollers (VINH ≥ 2.4 V, VINL ≤ 0.8 V).
AD7441BRTZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 1
- Input Type:
- Pseudo-Differential
- Data Interface:
- SPI, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- SOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7441BRTZ-REEL7 FAQ
1.How can I place an order for AD7441BRTZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7441BRTZ-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 AD7441BRTZ-REEL7 reliable?
The price and inventory of AD7441BRTZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7441BRTZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7441BRTZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7441BRTZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7441BRTZ-REEL7?
AD7441BRTZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7441BRTZ-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 AD7441BRTZ-REEL7?
For technical support, including AD7441BRTZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7441BRTZ-REEL7 requirements.
6.How does Aetrix verify that AD7441BRTZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7441BRTZ-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 AD7441BRTZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7441BRTZ-REEL7?
All AD7441BRTZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7441BRTZ-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 AD7441BRTZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7441BRTZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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