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Analog Devices Inc. AD7450ARZ-REEL7
- Part No.:
- AD7450ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD7450ARZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,984
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Product details
Overview
AD7450ARZ-REEL7 from Analog Devices is a 12-bit, 1 MSPS successive approximation ADC with fully differential analog input, 3 V/5 V single-supply operation, and SPI/QSPI-compatible serial interface - used in high-accuracy transducer interfaces and portable instrumentation requiring low power and wide input bandwidth.
For engineers reviewing the AD7450ARZ-REEL7 datasheet, AD7450ARZ-REEL7 pinout, AD7450ARZ-REEL7 application, or AD7450ARZ-REEL7 equivalent, key selection criteria include differential input SINAD (70 dB min at 300 kHz), no pipeline delay, flexible reference range (100 mV–3.5 V), and SOIC-8 package compatibility with battery-powered and motor control systems.
Technical Context
The AD7450ARZ-REEL7 implements a SAR architecture with dual capacitive DACs and an integrated differential track-and-hold amplifier featuring 20 MHz –3 dB bandwidth and 50 ps aperture jitter. It uses CS-triggered sampling and SCLK-synchronized conversion with 16-cycle timing (1.07 µs at 18 MHz).
Its two's complement output coding, external VREF dependency (100 mV–3.5 V), and CMRR >85 dB up to 10 kHz enable precise differential signal acquisition across variable common-mode voltages - critical for noise-immune sensor front-ends and isolated data acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for high-fidelity digitization of analog sensor or control signals. |
| Throughput Rate | 1 MSPS at 5 V / 833 kSPS at 3 V - supports real-time sampling of fast-changing industrial or motor feedback waveforms. |
| SINAD | 70 dB min at 300 kHz input - ensures ≥8.6 ENOB for accurate spectral representation in communications and instrumentation. |
| Power Dissipation | 9 mW max at 1 MSPS (5 V) / 3.75 mW max at 833 kSPS (3 V) - enables extended runtime in battery-powered handheld devices. |
| Reference Range | 100 mV to 3.5 V (5 V supply) or 2.2 V (3 V supply) - allows scalable full-scale input span (±VREF) and configurable common-mode biasing. |
| Aperture Jitter | 50 ps typ - limits sampling uncertainty to <0.1 LSB error at 100 kHz input, preserving dynamic accuracy in precision measurement. |
| INL | ±2 LSB max (A version) - guarantees monotonicity and predictable code transitions across full temperature range (–40°C to +85°C). |
Pinout & Package
AD7450ARZ-REEL7 is housed in an 8-lead SOIC package (SOIC-8, body width 3.9 mm, JEDEC MS-012), RoHS-compliant and tape-and-reel packaged (REEL7 = 1000 pcs/reel). Pinout is validated per Analog Devices AD7450 Rev. A datasheet Figure 6 and Pin Function Description.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | External reference voltage input | Defines full-scale differential span (±VREF); must be decoupled with ≥0.1 µF capacitor; sets common-mode operating point. |
| VIN+ | Differential analog input positive terminal | Accepts signal referenced to VIN–; requires matched source impedance to minimize DNL errors and ensure common-mode rejection. |
| VIN– | Differential analog input negative terminal | Completes differential pair; combined with VIN+ determines sampled voltage difference (VIN+ − VIN–). |
| GND | Analog ground reference | Common return for all analog circuitry; must be connected to clean system analog ground plane, separate from digital ground. |
| CS | Active-low chip select | Initiates conversion on falling edge and frames serial data transfer; minimum pulse width 10 ns. |
| SDATA | Serial data output | Two's complement 12-bit result, MSB-first, preceded by four leading zeros; three-state controlled by SCLK and CS timing. |
| SCLK | Serial clock input | Drives both data readout and internal conversion timing; supports 4 kHz–18 MHz range; determines throughput rate and power consumption. |
| VDD | Single power supply input | Accepts 3 V (±10%) or 5 V (±5%); requires 0.1 µF ceramic + 10 µF tantalum decoupling to GND for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture delivers deterministic, single-cycle conversion - essential for closed-loop control and time-critical trigger applications. |
| Fully differential input | Rejects common-mode noise and doubles effective dynamic range vs. single-ended inputs - improves SNR in EMI-prone environments. |
| Flexible reference management | VREF adjustable from 100 mV to 3.5 V enables custom input scaling and biasing without external op-amp level-shifting circuitry. |
| Low-power shutdown mode | 1 µA max quiescent current in full power-down - reduces average system power in burst-sampling or sleep-wake architectures. |
| High-speed serial interface | SPI/QSPI/MICROWIRE-compatible with 18 MHz max SCLK - simplifies integration with ARM Cortex-M, DSP, and FPGA host controllers. |
Applications
| Transducer Interface | Battery-Powered Systems |
|---|---|
Use Scenario: High-precision pressure, strain, or temperature sensing using bridge-based transducers with ratiometric excitation. IC Role / Device Role / Timing Role: ADC digitizes differential output of instrumentation amplifier; CS-triggered sampling synchronizes with excitation cycle. Use Value: 70 dB SINAD at 300 kHz preserves small-signal resolution; differential input rejects supply and EMI noise coupled into long sensor cables. |
Use Scenario: Portable multimeter or handheld oscilloscope acquiring analog waveforms with >100 kSPS sustained sampling. IC Role / Device Role / Timing Role: Core data converter managing power-constrained signal chain; enters shutdown between samples to extend battery life. Use Value: 3.75 mW max at 833 kSPS (3 V) enables >10-hour runtime on coin-cell; SOIC-8 footprint simplifies compact PCB layout. |
| Data Acquisition Systems | Motor Control |
Use Scenario: Industrial DAQ module capturing multi-channel analog signals (voltage, current, thermocouple) with synchronized sampling. IC Role / Device Role / Timing Role: Single-channel ADC in modular design; daisy-chained via shared SCLK/CS for channel multiplexing. Use Value: 16-cycle fixed conversion time ensures deterministic latency; no pipeline delay avoids phase skew across channels. |
Use Scenario: Real-time current sensing in BLDC motor drives using shunt resistors and differential amplifiers. IC Role / Device Role / Timing Role: High-speed current feedback ADC; triggered by PWM edge to capture peak current during conduction period. Use Value: 50 ps aperture jitter minimizes current measurement error at 20 kHz switching frequencies; ±2 LSB INL ensures accurate torque regulation. |
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 |
|---|---|---|---|
| AD7451ARZ-REEL7 | Same SOIC-8 package and pinout; higher throughput (1.25 MSPS) but higher power (12 mW at 5 V); requires 2.5 V reference only. | Better suited for high-speed control loops where timing margin is critical; less flexible for low-voltage or variable-reference designs. | Select AD7451ARZ-REEL7 when throughput >1 MSPS is mandatory and reference voltage is fixed at 2.5 V. |
| ADS7822U | 12-bit, 200 kSPS, single-ended input, 3 V only; SPI interface; 2.25 mW at 200 kSPS; MSOP-8 package. | Limited to single-ended sources and lower speed; lacks differential noise immunity and wide reference flexibility. | Choose ADS7822U for cost-sensitive, low-speed, space-constrained designs where differential input is not required. |
Compared with AD7450ARZ-REEL7, AD7451ARZ-REEL7 offers higher speed at the expense of reference inflexibility and increased power, while ADS7822U trades performance and topology for compactness and lower cost - making AD7450ARZ-REEL7 optimal for balanced differential acquisition in portable and industrial systems.
Availability
AD7450ARZ-REEL7 is available at Aetrix Electronics and suitable for transducer interface, battery-powered instrumentation, and motor control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7450ARZ-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 AD7450 belongs to Analog Devices' precision SAR ADC product line, designed specifically for low-power, high-accuracy differential data acquisition in portable and noise-sensitive embedded systems.
FAQ
What is the maximum reference voltage supported by the AD7450ARZ-REEL7?
The AD7450ARZ-REEL7 supports VREF up to 3.5 V when operated from a 5 V supply, and up to 2.2 V when operated from a 3 V supply. These limits ensure proper internal biasing and specified DC accuracy; exceeding them may degrade INL or cause functional failure. The AD7450ARZ-REEL7 datasheet specifies 2.56 V (±1%) for 5 V operation and 1.257 V (±1%) for optimal performance.
Does the AD7450ARZ-REEL7 require external clock circuitry for conversion timing?
No - the AD7450ARZ-REEL7 uses the SCLK input as its sole timing source for both serial data transfer and internal conversion. With a 18 MHz SCLK, conversion completes in 16 cycles (1.07 µs); no separate master clock or PLL is needed. This simplifies system design and eliminates timing skew between sampling and readout in the AD7450ARZ-REEL7.
Can the AD7450ARZ-REEL7 operate with a 2.5 V supply?
No - the AD7450ARZ-REEL7 is specified only for 3 V (±10%) or 5 V (±5%) supplies. Operation at 2.5 V falls outside Absolute Maximum Ratings and violates the minimum VDD requirement; it will not meet AC/DC specifications and may fail to initialize or sample correctly. Always use 3 V or 5 V for reliable AD7450ARZ-REEL7 operation.
What is the significance of the four leading zeros in the AD7450ARZ-REEL7 serial output format?
The AD7450ARZ-REEL7 outputs a 16-bit word containing four leading zeros followed by the 12-bit two's complement result (MSB first). This fixed-length framing simplifies FPGA or microcontroller bit-shift logic and ensures consistent byte alignment regardless of data value - critical for deterministic firmware parsing in real-time AD7450ARZ-REEL7 implementations.
How does the AD7450ARZ-REEL7 handle common-mode voltage variations?
The AD7450ARZ-REEL7 accepts a wide common-mode range (e.g., 0.625 V to 4.42 V at VREF = 1.25 V, 5 V supply), defined by VREF and VDD. Its differential input structure inherently rejects common-mode noise, and the common-mode voltage is set externally - not derived from VREF - allowing independent biasing of VIN+ and VIN– within datasheet limits for optimal AD7450ARZ-REEL7 signal integrity.
AD7450ARZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7450ARZ-REEL7 FAQ
1.How can I place an order for AD7450ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7450ARZ-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 AD7450ARZ-REEL7 reliable?
The price and inventory of AD7450ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7450ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7450ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7450ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7450ARZ-REEL7?
AD7450ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7450ARZ-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 AD7450ARZ-REEL7?
For technical support, including AD7450ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7450ARZ-REEL7 requirements.
6.How does Aetrix verify that AD7450ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7450ARZ-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 AD7450ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7450ARZ-REEL7?
All AD7450ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7450ARZ-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 AD7450ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7450ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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