AD7938BCPZ-6REEL7

Product Overview

Category

AD7938BCPZ-6REEL7 belongs to the category of analog-to-digital converters (ADCs).

Use

This product is primarily used for converting analog signals into digital data, making it suitable for various applications in industries such as telecommunications, industrial automation, and medical devices.

Characteristics

• High-resolution: The AD7938BCPZ-6REEL7 offers a resolution of 16 bits, ensuring accurate conversion of analog signals.
• Low power consumption: It operates at low power levels, making it energy-efficient.
• Fast conversion rate: With a maximum sampling rate of 1 MSPS (mega samples per second), it can quickly convert analog signals into digital form.
• Wide input voltage range: The ADC accepts a wide range of input voltages, allowing it to handle diverse signal levels.
• Small package size: The AD7938BCPZ-6REEL7 comes in a compact package, enabling space-saving designs.

Package and Quantity

The AD7938BCPZ-6REEL7 is available in a small lead-free LFCSP (lead frame chip scale package) with 20 pins. It is typically sold in reels containing a quantity of 250 units.

Specifications

• Resolution: 16 bits
• Sampling Rate: Up to 1 MSPS
• Input Voltage Range: ±VREF
• Power Supply: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Package Type: LFCSP
• Pin Count: 20

Detailed Pin Configuration

The AD7938BCPZ-6REEL7 has 20 pins arranged as follows:

1. VREF-
2. VREF+
3. AGND
4. REFOUT
5. REFIN
6. DGND
7. D15
8. D14
9. D13
10. D12
11. D11
12. D10
13. D9
14. D8
15. D7
16. D6
17. D5
18. D4
19. D3
20. D2

Functional Features

• High-resolution conversion: The AD7938BCPZ-6REEL7 provides accurate 16-bit analog-to-digital conversion, ensuring precise measurement of analog signals.
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices and energy-efficient applications.
• Flexible input voltage range: The ADC accepts a wide range of input voltages, allowing it to handle various signal levels.
• Fast conversion rate: With a maximum sampling rate of 1 MSPS, it can quickly convert analog signals into digital form.
• Internal reference voltage: The device includes an internal reference voltage source, eliminating the need for an external reference.

Advantages and Disadvantages

Advantages

• High resolution ensures accurate conversion.
• Low power consumption for energy efficiency.
• Wide input voltage range allows flexibility in signal handling.
• Compact package size saves space in designs.
• Internal reference voltage eliminates the need for an external reference.

Disadvantages

• Limited pin count may restrict the number of channels that can be simultaneously converted.
• Higher cost compared to lower-resolution ADCs.

Working Principles

The AD7938BCPZ-6REEL7 operates based on the successive approximation register (SAR) architecture. It samples the analog input voltage and converts it into a digital representation using a binary search algorithm. The internal circuitry compares the input voltage with a reference voltage and iteratively determines the most significant bits (MSBs) and least significant bits (LSBs) of the digital output until the conversion is complete.

Detailed Application Field Plans

The AD7938BCPZ-6REEL7 finds applications in various fields, including:

1. Telecommunications: It can be used for signal processing in communication systems, such as base stations and wireless transceivers.
2. Industrial Automation: The ADC is suitable for industrial control systems, data acquisition, and monitoring applications.
3. Medical Devices: It can be utilized in medical equipment for accurate measurement and monitoring of physiological signals.
4. Test and Measurement: The high resolution and fast conversion rate make it ideal for precision measurement instruments and data loggers.

Detailed and Complete Alternative Models

1. AD7948BCPZ-6REEL7: Similar to AD7938BCPZ-6REEL7 but with 12-bit resolution.
2. AD7988BCPZ-6REEL7: Similar to AD7938BCPZ-6REEL7 but with 18-bit resolution.
3. AD7928BCPZ-6REEL7: Similar to AD7938BCPZ-