Overview
The AD9238BST-65 is a high-performance, 12-bit, dual analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD9238 family and is specifically designed for high-speed applications. It features dual sample-and-hold amplifiers (SHAs) and an integrated voltage reference, making it suitable for a variety of demanding applications. The AD9238BST-65 operates at a sampling rate of 65 MSPS and is fabricated on an advanced CMOS process, ensuring low power consumption and high accuracy over the industrial temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Sampling Rate | 65 MSPS |
| Input Range | 1 V p-p to 2 V p-p |
| Input Bandwidth | 500 MHz, 3 dB bandwidth |
| Power Consumption | 600 mW at 65 MSPS |
| Temperature Range | -40°C to +85°C |
| Package Type | 64-lead LQFP or LFCSP |
| Data Format | Offset binary or twos complement |
| Channel Isolation | Typical 85 dB at fIN = 10 MHz |
Key Features
- Dual high-performance sample-and-hold amplifiers (SHAs) with wide bandwidth and differential input capability.
- Integrated voltage reference with options for fixed or adjustable reference voltages.
- Flexible analog input ranges (1 V p-p to 2 V p-p) and offset binary or twos complement data format.
- Clock duty cycle stabilizer to compensate for wide variations in the clock duty cycle.
- Low power consumption with 600 mW at 65 MSPS, making it suitable for battery-powered instruments.
- High channel isolation of 85 dB at fIN = 10 MHz, ensuring minimal crosstalk between channels.
Applications
- Ultrasound equipment: The high sampling rates and low power consumption make it ideal for medical ultrasound applications.
- Communications: Suitable for direct conversion or IF sampling receivers in wireless communication systems such as WB-CDMA, CDMA2000, and WiMAX.
- Imaging: Used in various imaging applications due to its high accuracy and speed).
- Battery-powered instruments: Ideal for hand-held scopemeters and other portable instruments due to its low power consumption).
- Digital oscilloscopes: Used in low-cost, high-performance digital oscilloscopes).
Q & A
- What is the resolution of the AD9238BST-65 ADC?
The AD9238BST-65 has a resolution of 12 bits).
- What are the sampling rate options for the AD9238 family?
The AD9238 family offers sampling rates of 20 MSPS, 40 MSPS, and 65 MSPS, with the AD9238BST-65 specifically operating at 65 MSPS).
- What is the input bandwidth of the AD9238BST-65?
The input bandwidth of the AD9238BST-65 is 500 MHz with a 3 dB bandwidth).
- What are the power consumption levels for the AD9238BST-65?
The AD9238BST-65 consumes 600 mW of power at a sampling rate of 65 MSPS).
- What is the temperature range for the AD9238BST-65?
The AD9238BST-65 is specified over the industrial temperature range of -40°C to +85°C).
- What package types are available for the AD9238BST-65?
The AD9238BST-65 is available in 64-lead LQFP or LFCSP packages).
- What data formats does the AD9238BST-65 support?
The AD9238BST-65 supports both offset binary and twos complement data formats).
- What is the typical channel isolation of the AD9238BST-65?
The typical channel isolation of the AD9238BST-65 is 85 dB at fIN = 10 MHz).
- Does the AD9238BST-65 have a clock duty cycle stabilizer?
Yes, the AD9238BST-65 includes a clock duty cycle stabilizer to compensate for wide variations in the clock duty cycle).
- What are some common applications of the AD9238BST-65?
The AD9238BST-65 is commonly used in ultrasound equipment, communications systems, imaging applications, battery-powered instruments, and digital oscilloscopes).
