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Name: AD7940BRJZ-REEL7
Brand: Analog Devices Inc.
SKU: AD7940BRJZ-REEL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Analog Devices Inc. AD7940BRJZ-REEL7

Part No.:: AD7940BRJZ-REEL7

Manufacturer:: Analog Devices Inc.

Package:: SOT-23-6

Datasheet:: AD7940BRJZ-REEL7.pdf

Description:: IC ADC 14BIT SAR SOT23-6

In Stock:: 19069

Quantity:: Add To Cart

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AD7940BRJZ-REEL7 Typical application Circuitry

AD7940BRJZ-REEL7

The AD7940BRJZ-REEL7 is a high-precision, low-power, 14-bit analog-to-digital converter (ADC) that features a high-speed serial interface. This ADC is ideal for applications requiring accurate and fast data acquisition, such as in medical imaging, instrumentation, and industrial process control.

Key Specifications of the AD7940BRJZ-REEL7:

1. Resolution: 14-bit accuracy for detailed analog-to-digital conversion.

2. Sampling Rate: Capable of up to 1.6 MSPS (Mega Samples Per Second), enabling rapid data acquisition.

3. Power Efficiency: Low power consumption for energy-sensitive applications.

4. Interface: Serial interface (SPI compatible) for simplified data transfer.

5. Supply Voltage: Operates with a 5V power supply for system compatibility.

6. Input Range: Differential input range for improved signal integrity.

7. Package: Compact SOT-23 package for space-constrained applications.

8. Temperature Range: Suitable for industrial temperature ranges.

Application Scenario - Medical Imaging System:

In a medical imaging system, such as an ultrasound machine, the AD7940BRJZ-REEL7 can be used to digitize analog signals from transducers, providing high-resolution images for diagnostic purposes.

Detailed Circuit Connection:

1. Power Supply Integration: Connect the VDD pin to a 5V supply to power the ADC, and ensure the GND pin is grounded for stable operation.

2. Transducer Interface: Connect the differential analog inputs (AIN+ and AIN-) to the output of the ultrasound transducer to capture high-fidelity signals.

3. Serial Interface Setup: Link the SCLK, SDI, and SDO pins to the corresponding SPI pins on a microcontroller or DSP to facilitate high-speed data communication. The CNV pin should be connected to a control signal for initiating conversions.

4. Reference Voltage Application: Attach a stable reference voltage to the REF pin to set the ADC's full-scale range, crucial for maintaining measurement accuracy.

Circuit Design Considerations:

1. Signal Integrity: Implement proper impedance matching and use shielded cables for the transducer connections to preserve signal quality.

2. Noise Reduction: Employ decoupling capacitors near the power supply pins and use a low-noise reference voltage source to minimize noise in the conversion process.

3. Thermal Management: Ensure adequate heat dissipation in the circuit design, as the ADC may generate heat during high-speed operation.

4. PCB Layout: Design the PCB layout to minimize parasitic inductance and capacitance, segregating analog and digital sections, and using a ground plane to reduce interference.

5. Data Transfer Reliability: Optimize the SPI interface connections for reliable and error-free data transfer, crucial for maintaining the fidelity of medical images.

By incorporating the AD7940BRJZ-REEL7 into a medical imaging system, engineers can achieve high-resolution digitization of ultrasound signals, enhancing the clarity and diagnostic value of medical images.

AD7940BRJZ-REEL7 information

AD7940BRJZ-REEL7 Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
Product Status:
Active
Number of Bits:
14
Sampling Rate(PerSecond):
100k
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:
2.5V ~ 5.5V
Voltage-Supply Digital:
2.5V ~ 5.5V
Features:
-
Operating Temperature:
-40°C ~ 85°C

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6. What is the process for return or replacement of AD7940BRJZ-REEL7?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of AD7940BRJZ-REEL7.

(3)The PartNo is unused and only in the original unpacked packaging.

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