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Analog Devices Inc. AD7450ABRTZ-REEL7
- Part No.:
- AD7450ABRTZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8
- Datasheet:
-
AD7450ABRTZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,437
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Product details
Overview
AD7450ABRTZ-REEL7 from Analog Devices is a 12-bit, 1 MSPS successive approximation register (SAR) analog-to-digital converter with fully differential analog inputs, 70 dB minimum SINAD at 100 kHz, ±1 LSB INL max, and operation from single 3 V or 5 V supply. It targets high-accuracy, low-power data acquisition in space-constrained systems such as portable instrumentation and motor control.
For engineers reviewing the AD7450ABRTZ-REEL7 datasheet, AD7450ABRTZ-REEL7 pinout, AD7450ABRTZ-REEL7 application, or AD7450ABRTZ-REEL7 equivalent, key selection considerations include its 12-bit resolution, differential input architecture, 1 MSPS throughput with no pipeline delay, SPI-compatible serial interface, and 8-lead SOT-23 package compatibility with battery-powered and transducer interface designs.
Technical Context
The AD7450ABRTZ-REEL7 implements a SAR ADC architecture with a low-noise, wide-bandwidth differential track-and-hold amplifier supporting up to 3.5 MHz input frequencies. Its conversion is initiated on the falling edge of CS and synchronized to the SCLK, enabling precise sampling control without latency.
It accepts an externally applied reference voltage (VREF) ranging from 100 mV to 3.5 V, directly setting the full-scale input span (2 × VREF) and common-mode operating point. The device supports twos complement output coding and features a dedicated power-down mode drawing ≤1 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels for high-fidelity signal digitization |
| Throughput Rate | 1 MSPS - enables real-time sampling of signals up to 500 kHz per Nyquist criterion |
| SINAD | 70 dB min at 100 kHz - ensures ≥8.3 effective bits for clean dynamic signal capture |
| INL | ±1 LSB max - guarantees monotonicity and linearity critical for closed-loop control |
| Power Dissipation | 4 mW max at 1 MSPS with 3 V supply - supports extended battery life in portable systems |
| Reference Range | 100 mV to 3.5 V - allows flexible input scaling and common-mode biasing |
| Package | 8-lead SOT-23 - provides compact footprint (2.9 mm × 1.6 mm) for space-limited PCBs |
Pinout & Package
The AD7450ABRTZ-REEL7 is housed in an 8-lead SOT-23 package with exposed pad (RoHS-compliant, moisture sensitivity level 1). Pin 1 is marked by a dot; top view orientation follows JEDEC MO-178 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Reference Input | Accepts external voltage (100 mV–3.5 V) that defines full-scale range and common-mode point |
| VIN+ | Differential Analog Input (+) | Positive terminal of fully differential input pair; supports rail-to-rail common-mode range |
| VIN− | Differential Analog Input (−) | Negative terminal; 180° out-of-phase with VIN+; enables rejection of common-mode noise |
| GND | Analog Ground | Reference node for all analog circuitry; must be connected to low-impedance system ground plane |
| CS | Chip Select | Active-low signal initiating conversion and framing serial data transfer on SDATA |
| SDATA | Serial Data Output | Three-state output delivering 12-bit twos complement result MSB-first with four leading zeros |
| SCLK | Serial Clock Input | Controls conversion timing and serial bit clock; supports up to 18 MHz for 1 MSPS operation |
| VDD | Power Supply | Single 2.7–3.6 V or 4.75–5.25 V supply; requires 0.1 µF + 10 µF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | SAR architecture ensures deterministic 16-clock-cycle conversion time (888 ns @ 18 MHz), eliminating latency in real-time feedback loops |
| Fully differential input | Rejects common-mode noise and enables direct connection to transformer-coupled or op-amp-based sensor front-ends |
| Flexible reference input | VREF programmability (100 mV–3.5 V) permits optimized SNR across varying input signal amplitudes and supply voltages |
| Low-power shutdown | 1 µA max power-down current extends battery runtime during idle periods without requiring supply sequencing |
| SPI/QSPI/MICROWIRE compatible | Standard serial interface simplifies integration with ARM Cortex-M, TI C2000, and ADSP microcontrollers without custom logic |
Applications
| Transducer Interface | Battery-Powered Systems |
|---|---|
Use Scenario: Digitizing low-level outputs from strain gauges, RTDs, or piezoelectric sensors in industrial condition monitoring units. IC Role / Device Role / Timing Role: High-resolution, low-noise ADC capturing differential sensor signals while rejecting EMI and ground loop interference. Use Value: 70 dB SINAD at 100 kHz and ±1 LSB INL enable sub-0.1% measurement accuracy without external amplification or calibration. | Use Scenario: Signal acquisition in handheld multimeters, portable gas analyzers, or wearable health monitors operating from coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Low-power 12-bit ADC providing fast sampling with minimal quiescent current during active measurement cycles. Use Value: 4 mW max power at 1 MSPS and 1 µA shutdown current extend operational life between charges or battery replacements. |
| Data Acquisition Systems | Motor Control |
Use Scenario: Multi-channel voltage/current sampling in PLC analog input modules or benchtop oscilloscope front-ends. IC Role / Device Role / Timing Role: Precision SAR ADC delivering deterministic conversion timing and no pipeline latency for synchronized multi-sensor capture. Use Value: 1 MSPS throughput and 16-SCLK conversion cycle allow tight synchronization with FPGA or DSP controllers for time-critical acquisition. | Use Scenario: Real-time current sensing in three-phase inverter drives for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: High-speed differential ADC measuring shunt resistor voltages with immunity to switching noise from IGBTs/MOSFETs. Use Value: Differential input structure and 70 dB SINAD ensure accurate current reconstruction even under high dv/dt conditions near power switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7450BRMZ-REEL | Same 12-bit/1 MSPS specs but in 8-lead MSOP package; identical electrical performance and pinout mapping | Preferred where board layout allows larger MSOP footprint (3 mm × 3 mm) and thermal relief via exposed pad is needed | Select when higher thermal dissipation or manual soldering feasibility outweighs SOT-23 size advantage |
| ADS7822U | 12-bit, 250 kSPS max, single-ended input only, 3 V supply only, 8-lead SOIC package | Lower speed and no differential capability limit use to non-critical, lower-bandwidth sensing tasks | Choose only if cost sensitivity dominates and 1 MSPS throughput or differential rejection are not required |
Compared with AD7450BRMZ-REEL, the AD7450ABRTZ-REEL7 offers identical performance in a smaller SOT-23 package ideal for ultra-compact designs; versus ADS7822U, it delivers 4× higher throughput, differential input support, and dual-supply flexibility-critical for noise-immune industrial signal chains.
Availability
AD7450ABRTZ-REEL7 is available at Aetrix Electronics and suitable for transducer interface, battery-powered systems, and motor control applications requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for AD7450ABRTZ-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 AD7450A belongs to Analog Devices' precision SAR ADC product line, engineered for high-resolution, low-latency data acquisition in space- and power-constrained industrial, instrumentation, and motor control systems.
FAQ
What is the maximum sampling rate supported by the AD7450ABRTZ-REEL7?
The AD7450ABRTZ-REEL7 supports a maximum throughput rate of 1 MSPS, achieved using an 18 MHz serial clock and completing conversion in exactly 16 SCLK cycles (888 ns). This rate is guaranteed across the full operating temperature range (–40°C to +85°C) and both 3 V and 5 V supply conditions, with no pipeline delay affecting timing predictability.
Does the AD7450ABRTZ-REEL7 require an external reference voltage?
Yes, the AD7450ABRTZ-REEL7 requires an external reference voltage applied to the VREF pin. The reference can range from 100 mV to 3.5 V depending on the supply voltage (2.06 V typical for 3 V operation, 2.55 V for 5 V), and directly determines the full-scale input span (2 × VREF) and common-mode operating point. No internal reference is provided.
What package type is used for the AD7450ABRTZ-REEL7?
The AD7450ABRTZ-REEL7 is packaged in an 8-lead SOT-23 with exposed pad, compliant with RoHS and moisture sensitivity level 1. Its compact dimensions (2.9 mm × 1.6 mm) and standard JEDEC MO-178 pinout make it suitable for high-density PCB layouts in portable and embedded applications.
How does the differential input architecture of the AD7450ABRTZ-REEL7 improve noise immunity?
The AD7450ABRTZ-REEL7's fully differential input rejects common-mode noise-including EMI, ground bounce, and power supply ripple-by amplifying only the voltage difference between VIN+ and VIN−. With CMRR exceeding 70 dB at 100 kHz (per datasheet Figure 8), it maintains signal integrity in electrically noisy environments like motor drives or industrial sensor nodes.
Is the AD7450ABRTZ-REEL7 compatible with standard SPI interfaces?
Yes, the AD7450ABRTZ-REEL7 features an SPI-compatible serial interface supporting standard modes (CPOL = 0, CPHA = 0), and is also compatible with QSPI™ and MICROWIRE™ protocols. It uses CS as frame sync, SCLK for timing, and SDATA for 12-bit twos complement output (four leading zeros + 12 data bits), enabling plug-and-play integration with most microcontrollers and DSPs.
AD7450ABRTZ-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:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 1
- Input Type:
- 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:
- -
AD7450ABRTZ-REEL7 FAQ
1.How can I place an order for AD7450ABRTZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7450ABRTZ-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 AD7450ABRTZ-REEL7 reliable?
The price and inventory of AD7450ABRTZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7450ABRTZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7450ABRTZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7450ABRTZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7450ABRTZ-REEL7?
AD7450ABRTZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7450ABRTZ-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 AD7450ABRTZ-REEL7?
For technical support, including AD7450ABRTZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7450ABRTZ-REEL7 requirements.
6.How does Aetrix verify that AD7450ABRTZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7450ABRTZ-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 AD7450ABRTZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7450ABRTZ-REEL7?
All AD7450ABRTZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7450ABRTZ-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 AD7450ABRTZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7450ABRTZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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