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Name: AD7654ASTZ
Brand: Analog Devices Inc.
SKU: AD7654ASTZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc. AD7654ASTZ

Part No.:: AD7654ASTZ

Manufacturer:: Analog Devices Inc.

Package:: 48-LQFP

Datasheet:

Description:: IC ADC 16BIT SAR 48LQFP

In Stock:: 2409

Quantity:: Add To Cart

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AD7654ASTZ Specifications

Packaging:
Bulk,Tray
Series:
PulSAR®
Product Status:
Active
Number of Bits:
16
Sampling Rate(PerSecond):
500k
Number of Inputs:
2, 4
Input Type:
Pseudo-Differential, Single Ended
Data Interface:
SPI, Parallel, DSP
Configuration:
MUX-S/H-MUX-ADC
Ratio-S/H:ADC:
2:1
Number of A/D Converters:
1
Architecture:
SAR
Reference Type:
External
Voltage-Supply Analog:
5V
Voltage-Supply Digital:
5V
Features:
Simultaneous Sampling
Operating Temperature:
-40°C ~ 85°C

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AD7654ASTZ information

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AD7654ASTZ Typical application Circuitry

AD7654ASTZ

The AD7654ASTZ is a high-performance, 16-bit, dual-channel, simultaneous sampling analog-to-digital converter (ADC) chip.Its main job is to transform analog signals into digital data so that electrical impulses can be precisely measured and analyzed for a variety of uses.

Use Cases

Frequently, this chip is utilized in:

1. Data Acquisition Systems: For capturing and processing analog signals in scientific research and industrial monitoring.

2. Medical Devices: Such as ECG and EEG monitors, where accurate signal measurement is crucial.

3. Control Systems: In industrial automation for feedback control and monitoring.

4. Telecommunications: For signal processing and conversion in communication equipment.

Key Features

- High-Speed Sampling: Quick data capture is made possible by up to 1 MSPS (Mega Samples Per Second).

- Dual-Channel: This feature simplifies the system and enhances synchronization by enabling the simultaneous sampling of two analog inputs.

- Low power consumption: ideal for battery-operated devices.

- Wide Input Range: Takes into account various signal intensities.

- Serial Interface: Facilitates communication with digital signal processors (DSPs) or microcontrollers.

Circuit Design Example: Dual-Channel Data Acquisition System

1. Power Supply Connection:

- Connect a +5V supply to the AD7654ASTZ VDD pin (pin 40) and a -5V supply to the VSS pin (pin 20).

- To filter noise, bypass capacitors (0.1µF) should be positioned next to these pins.

2. Analog Inputs:

- Connect the analog signals to be measured to the AIN1+ (pin 1) and AIN1- (pin 2) for channel 1, and AIN2+ (pin 5) and AIN2- (pin 6) for channel 2.

3. Reference Voltage:

- Apply a stable reference voltage (e.g., 2.5V) to the REF IN+ (pin 10) and REF IN- (pin 11) pins to set the input range.

4. Digital Interface:

- Connect the AD7654ASTZ serial data output (SDO, pin 36) to the microcontroller or DSP for data retrieval.

- The AD7654ASTZ serial clock (SCLK, pin 35) and chip select (CS, pin 37) pins control the data transfer timing.

5. Grounding:

- Ensure a good ground connection (AGND, pin 21) for accurate measurements. Use separate analog and digital grounds if possible to minimize noise.

Design Considerations

- Input Signal Conditioning: Use filters and buffers to protect the ADC inputs and ensure signal integrity.

- Power Supply Decoupling: Position decoupling capacitors near the power supply pins to reduce noise.

- Clock Stability: Use a stable clock source for SCLK to ensure accurate timing for data conversion and transfer.

- PCB Layout: Minimize the length of analog signal traces and keep them away from digital traces to reduce interference.

In conclusion, the AD7654ASTZ ADC is a versatile and high-performance chip suitable for various applications requiring precise and simultaneous analog-to-digital conversion. Proper circuit design and layout considerations are essential to leverage its full potential and achieve accurate measurements.

AD7654ASTZ FAQ

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6. What is the process for return or replacement of AD7654ASTZ?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the AD7654ASTZ we delivered, we will accept the replacement or return of the AD7654ASTZ only when all of the below conditions are fulfilled:

(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 AD7654ASTZ.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations